CR14250SE-TC23 - Sanyo Semiconductor

Connection Terminal

Specifications for Lithium

Batteries and Key Circuit

Design Points

Connection Terminal Specifications for Lithium Batteries and Key Circuit Design Points

When choosing batteries, the rating of the device, operating load conditions, and operating temperature range should be considered.

Also, when deciding connection terminal configuration, battery installation space and battery fixation method should be considered.

Refer to the lithium battery section of the battery selection guide (p12).

When planning circuit design, please keep in mind that there is a large difference between primary and rechargeable lithium batteries.

The properties of each design must be completely understood before implementation.

Please consult SANYO for further details or inquiries.

SANYO standard configuration and model No. display methods are as shown below.

Standard SANYO specifications are given starting on page 1.

■

■■

■ Tab specification

Battery model No. Attachment method Tab configuration

○ Attachment method (to a PC board)

H : Horizontal attachment

V : Vertical attachment

T : Surface mount attachment

Z : Special attachment

△ Tab configuration

T : Flat board (width 3mm)

I : Flat board (top width; 0.5〜1.9mm)

H : Flat board with hole (top width; 3.0〜3.9mm)

L : Flat board with hole (top width; over 4mm)）

J : Top J type

M : Top pin type

R : 3 terminal type (corner R ant)

S : 3 terminal type (corner R pear)

Z : Special

HR type

HJ type

VS type TT type

■

■■

■ Lead wire specification

Battery model No. Lead wire specification

L type

■

■■

■ Connector specification

C type

Battery model No. Connector specification

〔

〔〔

〔Primary Lithium Batteries〕

〕〕

〕

Sanyo has anticipated a wide range of user requirements by developing a line of batteries with a variety of different terminal designs (tab,

connector and other terminals), as well as holders for simple mounting and greater flexibility.

Standard specifications are described below. Consult Sanyo for other specifications.

Dimensions are for reference only. Consult Sanyo for details.

Tab specification

■

■■

■ Coin Type Primary Lithium Batteries

Stainless tab and nickel wire are solder plated.

ABCDEFG

CR2032-TT2 220 no 20.0 3.2 3.4 10.0 0.1t Ni-Cu alloy

CR2430-TT2 280 no 24.5 3.0 3.3 10.0 0.15t Ni-Cu alloy

CR2450-TT2 610 no 24.5 5.0 5.3 10.0 0.15t Ni-Cu alloy

CR2025-TT2 150 no 20.5 2.5 2.9 + - 5.0 0.15t Ni-Cu alloy

CR1220-TJ1 36 yes 13.0 2.0 2.8 3.1 + - 2.5 3.8 0.2t stainless steel Fig. 2

CR2032-T19 220 no 20.0 3.2 3.6 6.3 5.0 18.0 0.15t Ni-Cu alloy

CR2450-T8 610 yes 25.0 5.0 5.4 6.3 5.0 20.3 0.15t Ni-Cu alloy

CR1220-P1 36 no 12.5 2.0 2.8 6.2 5.0 10.0 3.25 0.2t stainless steel Fig. 4

CR2032-P5-1 220 no 20.0 3.2 4.0 8.7 5.0 15.2 0.2t stainless steel

CR2032-P5-2 220 yes 20.5 3.2 4.0 8.7 5.0 15.2 0.2t stainless steel

CR2430-P1-2 280 no 24.5 3.0 3.8 6.2 5.0 20.3 0.2t stainless steel

CR2450-P2 610 no 24.5 5.0 5.8 6.2 5.0 20.3 0.2t stainless steel

CR2032-HI5 220 yes 20.5 3.2 4.0 5.0 3.5 20.5 0.2t stainless steel Fig. 6

CR2032-VM1 220 yes 20.5 3.2 5.2 5.0 4.2 +10.5 φ0.8 nickel wire

CR2430-P2 280 yes 25.0 3.0 5.0 5.0 4.0 +10.5 φ0.8 nickel wire

CR2032-FT10 220 no 20.0 3.2 4.0 5.6 4.0 17.8 +10.2 0.2t stainless steel

CR2430-FT10 280 no 24.5 3.0 3.8 5.6 4.0 17.8 +10.2 0.2t stainless steel

CR2450-FT2-1 610 no 24.5 5.0 5.8 4.6 4.0 17.8 +10.2 0.2t stainless steel

CR2032-FT4-2 220 yes 20.5 3.2 4.0 5.0 4.0 3.8 +10.2 0.2t stainless steel

CR2430-FT4-2 280 yes 25.0 3.0 3.8 5.0 4.0 3.6 +10.2 0.2t stainless steel

CR2450-FT5-4 610 no 24.5 5.0 5.8 5.0 4.0 5.6 +10.2 0.2t stainless steel

Model Dimensions (mm) Material of terminal Fig.

Insulating

tube

Capacity

(mAh)

Fig. 1

Fig. 3

Fig. 7

Fig. 8

Fig. 9

Fig. 5

Fig. 2

Fig. 1 Fig. 3

Stainless tab and nickel wire are solder plated.

■

■■

■ High-power Cylindrical Type Primary Lithium Batteries

Stainless tab and nickel wire are solder plated.

＊Provided with insulating sleeve instead of insulating tube.

ABCDEFG

CR-1/3N-P1-1 160

es＊11.6 10.8 12.8 7.2 11.8 φ0.8 nickel wire Fi

. 10

CR15270-HM2 850 yes 15.5 27.0 29.0 6.0 27.0 φ0.8 nickel wire Fig. 11

CR17450E-R-HH2 2200 yes 17.0 45.0 45.3 3.5 45.0 0.15t Ni-Cu alloy Fig. 12

CR-1/3N-FT1 160 yes＊11.6 10.8 11.5 5.5 4.0 11.0 + 10.2 0.15t Ni-Cu alloy Fig. 13

CR15400-FT1 1400 yes 15.5 40.0 40.8 5.1 4.0 40.5 + 7.5 0.3t stainless steel Fig. 14

CR17335-HR1 1400 yes 17.0 33.8 34.6 5.1 4.0 34.3 + 7.5 0.3t stainless steel Fig. 15

CR17335E-R-HR1 1500 yes 17.0 33.5 34.3 5.1 4.0 34.0 + 7.5 0.3t stainless steel

CR17335HE-R-HR1 1350 yes 17.0 33.5 34.3 5.1 4.0 34.0 + 7.5 0.3t stainless steel

CR17450E-R-HR1 2200 yes 17.0 45.0 45.8 5.1 4.0 45.5 + 7.5 0.3t stainless steel

CR17450HE-R-HR1 2000 yes 17.0 45.0 45.8 5.1 4.0 45.5 + 7.5 0.3t stainless steel

Material of terminal Fig.

Fig. 20

Model Capacity

(mAh)

Ins ulating

tube

Dimensions (mm)

Fig. 7 Fig. 9

Fig. 15Fig. 13

Fig. 5Fig. 4 Fig. 6

Fig. 8

Fig. 10 Fig. 11 Fig. 12

Fig. 14

■

■■

■ High-capacity Cylindrical Type Primary Lithium Batteries

Fig. 17

Fig. 16 Fig. 18

Fig. 19 Fig. 20

Stainless tab and nickel wire are solder plated.

Provided with insulating tube.

●High-capacity cylindrical-type unit cell batteries are not nickel-plated. Do not use unit cells directly. Always use with the connection terminals.

■

■■

■ Assembled Primary Lithium Batteries with Connectors

CR2450-2-T-C1 (Two 3V batteries used in parallel)

ABCDEFG

CR14250SE-T1850 14.5 25 25.3 5 25 0.15t Ni-Cu alloy

CR17335SE-T11800 17 33.5 33.8 4.5 33.5 0.15t Ni-Cu alloy

CR17450SE-T12500 17 45 45.3 7.5 45 0.15t Ni-Cu alloy

CR23500SE-T15000 23 50 50.3 5 50.5 0.15t Ni-Cu alloy

CR14250SE-HH2 850 14.5 25 25.3 3.5 25 0.15t Ni-Cu alloy

CR12600SE-T11500 126060.310590.15t Ni-Cu alloy

CR17335SE-T4 1800 17 33.5 33.8 3.5 33.5 0.15t Ni-Cu alloy

CR14250SE-SP1-1850 14.5 25 33 φ0.8 nickel wire

CR17335SE-HM11800 17 33.5 33 φ0.8 nickel wire

CR14250SE-P1-1850 14.5 25 27 7 26 φ0.8 nickel wire

CR14250SE-P3 850 14.5 25 25.8 5.14 25.5 0.3t stainless steel

CR12600SE-P3 1500 126060.85.14 59 0.3t stainless steel

CR17335SE-P3 1800 17 33.5 34.3 5.14 34 0.3t stainless steel

CR17450SE-P3 2500 174545.85.14 45.5 0.3t stainless steel

CR14250SE-FT1850 14.5 25 25.8 5.14 25.5 + 7.5 0.3t stainless steel

CR12600SE-FT3 1500 126060.85.14 59 + 7.5 0.3t stainless steel

CR17335SE-FT11800 17 33.5 34.3 5.14 34 + 7.5 0.3t stainless steel

CR17450SE-FT12500 174545.85.14 45.5 + 7.5 0.3t stainless steel

Fig. 21

Dimensions (mm) Material of terminal Fig.

Fig. 16

Fig. 17

Fig. 18

Model

Fig. 19

Fig. 20

Capacity

(mAh)

Fig. 21

(unit: mm)(unit: mm)

2CR12600SE-T-C17 (6V)

Battery Holders (For Primary Lithium Batteries)

20H-1 24H-1 20H-1T 24H-2T

■

■■

■ Through-hole Mounting Type

20H-1 (For CR2032, CR2025＊

＊＊

＊)

＊Contact Sanyo for details when CR2025 used. (unit: mm)

■

■■

■ Features

● Easy battery replacement.

● Simple mounting on the PCB.

● Designed so that batteries cannot be easily inserted

in reverse polarity.

● Rigid battery fixing.

■

■■

■ Specifications

● Holder material is modified PPE and satisfies UL94V-1. (20H-1)

● Holder material is modified PPE and satisfies UL94V-O. (24H-1)

● For the terminal material, 0.25t of stainless steel plate is nickel-

plated.

● The connection resistances of (＋) and (−) terminals are under

100mΩ (1kHz through AC method).

■

■■

■ Surface Mounting Type

24H-2T (For CR2430)

(unit: mm)

■

■■

■ Features

● Easy battery replacement.

● Superior heat-resistant property allows reflowing.

(When mounting battery with a reflowing system, first solder a

holder on PCB, then place the battery in it. Contact Sanyo for

further details.)

● Compact and slim design requires minimal space.

● Rigid battery fixing.

■

■■

■ Specifications

● Holder material is PPS and satisfies UL94V-O.

● For the terminal material, 0.2t of stainless steel plate is nickel-

plated and the top is soldered.

● The connection resistances of (＋) and (−) terminals are

under 100mΩ (1kHz through AC method).

24H-1 (For CR2450)

(unit: mm)

20H-1T (For CR2032, CR2025＊

＊＊

＊)

＊Contact Sanyo for details when CR2025 is used. (unit: mm)

〔

〔〔

〔Primary Lithium Batteries for Memory Backup ―

――

― Key Design Points〕

〕〕

〕

●

●●

● Selecting Batteries

When considering the relationship between load current and battery durability, please keep in mind that you must select the appropriate battery to

meet load, current and expected durability of the equipment. The operating voltage of primary lithium batteries tends to decrease as the temperature

decreases. The current consumption of ICs tends to lessen as the temperature decreases. Please take these points into account when selecting

batteries. The relationship between load current and discharge time are shown as follows:

■

■■

■ Coin Type Primary Batteries ■

■■

■ Cylindrical Type Primary Batteries (High-power) ■

■■

■ Cylindrical Type Primary Batteries (High-capacity)

●

●●

● Important Points For Designing

Battery life is determined based on load current of IC (CMOS, SRAM) and memory retaining voltage. Pay special attention to the following points in

order to make full use of the superior characteristics of lithium primary batteries.

●

●●

● Battery Voltage for Memory Backup

The ordinary memory backup circuitry is shown below:

Minimum battery voltage for memory backup is required as

follows: VB＞VDR＋VD2＋I×R

●

●●

● Using Reverse Flow Prevention Diodes

Lithium primary batteries are not rechargeable. If there is any

possibility of electric current flowing from the main power source to the

battery, be sure to use one reverse flow prevention diode and one

protective resistor in series. (In accordance with UL regulations, when

lithium primary batteries are used as an equipment backup power

source, one diode and one protective resistor must be used in series.)

●

●●

● Protective Resistor

A protective resistor is necessary in order to reduce the charging

current when the diode failes. According to UL regulations, the

charging current when the diode fails should not exceed the value

shown in the table on page 6.

For example, in the circuit (1) shown below, when battery model

CR2016 is used in combination with a 5V main power source. The

maximum allowable current is 10mA.

5V-cell voltage≦R×10mA

In this case, cell voltage＝0, R≧500Ω

Therefore, a protective resistor over 500Ω is required.

●

●●

● Allowable Charging Amount Through the Diode

As shown in the circuit example (left figure), if there is any possibility that

the battery will be charged by D2 reverse current, please observe the

following.

Use a silicon diode with a small leakage current type or a Schottky diode

and design the circuit so that the total charging amount through the

diode does not exceed 3％ of the battery's nominal capacity during the

total period of use. Within this level, the adverse effect on battery

performance is extremely small. For instance, when CR12600SE

(nominal capacity of 1500mAh) is used for 10 years, the total charging

amount due to diode leakage current is 1500×0.03＝45mAh. Dividing

by a 10-year period:

45÷ (10×365×24) ＝0.0005 (mA)

Therefore, leakage current diode under 0.5μA is required.

■

■■

■ Circuit Sample

●

●●

● Battery Arrangement

When the battery is placed close to components that generate

heat, the battery may become hot. This may cause deformation of

the gasket material, resulting in leakage and inferior performance.

●

●●

● Soldering

When soldering is required, use a battery equipped with a

connection terminal. Do not apply solder directly to the battery.

Hand soldering should be done as quickly as possible (within 5

seconds) at a temperature from 250℃ to 350℃.

If too much solder is used, solder may flow under the battery

onto the PC board, causing battery leakage or deterioration of

battery characteristics.

Be especially careful when the battery and PC board are

positioned close together.

For automatic soldering, apply at 250℃〜270℃ within 5 seconds.

If the battery is kept above the soldering bath for a long time, or

if it is dropped into the soldering bath, it may burst open due to

overheating. To avoid leakage due to thermal deformation of the

gasket material or deterioration of battery performance, make

sure that the battery temperature does not exceed 85℃.

Consult Sanyo for details when soldering is applied with a

reflowing system.

The graph on the right shows open voltage recovery

characteristics after a presumed short circuit during automatic

soldering.

●

●●

● Cleaning and Drying

The use of a solvent with electrical conducting properties may

cause the battery to short circuit, resulting in the deterioration of

the battery's performance. If the temperature rises above 85℃

when drying, the gasket becomes thermally deformed. This may

cause leakage or inferior battery performance. Be sure not to

exceed 85℃ when drying.

Store batteries in a dry place that is not exposed to direct

sunlight and has little temperature fluctuation. Storage at high

temperatures or high humidity may influence the battery's

performance.

Recommended storage conditions:

temperature: 10℃ to 30℃

relative humidity: under 60％

●

●●

● Storage of Batteries

●

●●

● Battery Replacement for UL

According to UL regulations, batteries must be replaced by

trained technicians. However, the models other than those

marked with asterisks can be replaced by users, if certain

conditions are satisfied. Consult Sanyo for details.

1) The end product must be designed to prevent reverse

polarity installation of the battery. If the battery is reversed,

the short- or open-circuiting of any protective component,

one component at a time, shall not result in forced

discharge of the battery.

2) The end of the product shall contain a permanent marking

adjacent to the battery stating the following: “Replace

battery with (Battery manufacturer's name or end-product

manufacturer's name), Part No. ( ) only. Use of another

battery may present a risk of fire or explosion. See owner's

manual for safety instructions.”

3) The instruction manual supplied with the end product shall

also contain the above warning notice along with

instructions to the user as to where replacement batteries

can be obtained.

CAUTION:The battery used in this device may present a fire or

chemical burn hazard if mistreated. “Do not disassemble, heat above

100℃ (212°F) or incinerate.”“Dispose of used battery promptly.

Keep away from children.”

4)The following statements, or equivalent, shall be included on the

smallest package containing replacement cells.

“CAUTION: Fire and burn hazard. Do not disassemble, heat above

212°F or incinerate. Keep battery out of reach of children and in

original package until ready to use. Dispose of used batteries

promptly.”

■

■■

■ Open Circuit Voltage Recovery After Short Circuit CR17335SE

■

■■

■Allowable Charging Current Level When Diode Fails (UL Regulations)

Model Max. allow able charging current (mA)

CR1220 3.0

CR2016 10.0

CR2025 10.0

CR2032 10.0

CR2430 15.0

*CR2450 15.0

CR-1/3N 2.0

2CR-1/3N 2.0

CR15270 20.0

CR15400 25.0

CR17335 25.0

CR17335E-R 25.0

CR17335HE-R 25.0

CR17450E-R 25.0

CR17450HE-R 25.0

CR2 20.0

CR123A 25.0

CR-P2 25.0

CR-V3 25.0

2CR5 25.0

*CR14250SE 10.0

*CR12600SE 15.0

*CR17335SE 15.0

*CR17450SE 15.0

*CR23500SE 20.0

*CR14250SE-R 10.0

CR17335SE-R 15.0

CR17450SE-R 15.0

*CR23500SE-R 20.0

Classification

Coin

high-powerhigh-capacity

cylindrical

〔

〔〔

〔Rechargeable Lithium Batteries〕

〕〕

〕

As part of our ongoing efforts to meet customers' needs, we offer a wide range of batteries featuring different terminals, as well as battery

holders that facilitate easy connection to equipment. Only standard types of assembled batteries are discussed in this catalog. Consult Sanyo

for details regarding terminals and other types of assembled batteries.

The ML2430,ML2020,ML2016,and ML1220 are not nickel-plated. Avoid bare-contact usage or contact between the battery holder and coin-

type primary batteries. This could result in a faulty electrical connection. The battery must be used with connection terminals. However, the

ML414,ML421,ML614,ML621,NBL414,andNBL621 are nickel-plated and allow bare-contact.

Standard specifications are described below. Consult Sanyo for further specifications.

Tab specification

Stainless steel tab and nickel wire are solder plated.

ABCDEFG

ML1220-TT2 15yes13 2 2.4 + - 3.0 0.1t Ni-Cu alloy

ML2016-TT2 30 yes 20.5 1.6 2 + - 3.0 0.1t Ni-Cu alloy

ML2020-TT2 45 yes 20.5 2 2.7 + - 3.0 0.1t Ni-Cu alloy

ML2430-TT2 100 yes 25 3 3.4 + - 3.0 0.1t Ni-Cu alloy

ML414R-TT30 0.1no 4.8 1.4 1.8 1.11.3 0.1t stainless steel Fig. 2

ML1220-HZ115yes1322.46.35100.15t Ni-Cu alloy

ML2016-HZ130 yes 20.5 1.6 2 6.3 5 180.15t Ni-Cu alloy

ML2430-HZ1100 yes 25 3 3.4 6.3 5 180.15t Ni-Cu alloy

ML614-TZ143.4 no 6.8 1.4 1.8 2.6 + - 1.8 2.2 0.1t/0.15t stainless steel Fig. 4

ML414-TZ11.0 no 4.8 1.4 1.8 2.2 + - 1.6 1.5 0.1t stainless steel

NBL414-TZ11.0 no 4.8 1.4 1.8 2.2 + - 1.6 1.5 0.1t stainless steel

ML421-TZ12.3 no 4.8 2.126.5 2.2 + - 1.6 1.5 0.1t stainless steel

ML621-TZ15.5 no 6.8 2.12.55 2.6 + - 2.0 1.5 0.15t stainless steel

NBL621-TZ14.0 no 6.8 2.12.55 2.6 + - 2.0 1.5 0.15t stainless steel

ML1220-TJ115yes1322.83.1+ - 2.5 3.8 0.2t stainless steel Fig. 6

ML1220-HJ115yes1322.86.2510 3.3 0.2t stainless steel Fig. 7

ML2016-HJ130 yes 20.5 1.6 2.4 6.2 5 20.5 0.2t stainless steel

ML2430-HJ1100 yes 25 3 3.8 6.2 5 20.5 0.2t stainless steel

ML1220-VM115yes132 4 7 32.7 φ0.8 nickel wire

ML2016-VM130 yes 20.5 1.6 3.6 5 2.6 10.5 φ0.8 nickel wire

ML2430-VM1100 yes 25 3 5 5 4 10.5 φ0.8 nickel wire

ML2016-HS130 yes 20.5 1.6 2.4 5.6 4 17.8 +10.2 0.2t stainless steel

ML2430-HS1100 yes 25 3 3.8 5.6 4 17.8 +10.2 0.2t stainless steel

ML2016-VS130 yes 20.5 1.6 2.4 5 4 2.2 +10.2 0.2t stainless steel

ML2430-VS1100 yes 25 3 3.8 5 4 3.6 +10.2 0.2t stainless steel

Fig. 5

Capacitya

(mAh)

Model Dimensions (mm)

Insulating

tube

Shape and

material of terminal Fig.

Fig. 1

Fig. 3

Fig. 10

Fig. 11

Fig. 8

Fig. 9

Fig. 2 Fig. 3 Fig. 4

Fig. 5 Fig.6 Fig.7 Fig.8

Fig. 1

■

■■

■ Assembled Rechargeable Lithium Batteries with Connectors

(unit: mm)

Battery Holders (For Rechargeable Lithium Batteries)

■

■■

■ Surface Mounting Type

■

■■

■ Features

● Easy battery replacement.

● Superior heat-resistant property allows reflowing.

(When mounting battery with a reflowing system, first solder a holder

on PCB, then place the battery in it. Contact Sanyo

for further details.)

● Compact and slim design requires minimal space.

● Rigid battery fixing.

■

■■

■ Specifications

● Holder material is LCP and satisfies UL94V-O.

● For the terminal material, 0.1t of stainless steel plate is nickel-

plated and gold-plated.

● The connection resistances of (＋) and (−) terminals are under

100mΩ (1kHz through AC method).

(unit: mm)

(unit: mm) (unit: mm)

ML2016-CJ1 ML2430-CJ1

6H-1TG (For ML621, NBL621) 6H-2TE (For ML614)

Fig.9 Fig.10 Fig.11

〔

〔〔

〔Coin Type Rechargeable Lithium Batteries for Key Design Points of Circuits〕

〕〕

〕

●

●●

● Selecting Batteries

Choose the best batteries to suit the equipment load current and expected durability. Sanyo generally ships batteries with approx. 90％

charging condition. Handle with care to avoid short-circuiting. The relationship between load current and discharge time are shown below:

■

■■

■ML series ■

■■

■NBL series

●

●●

● Important Points for Designing

Charging circuit of rechargeable lithium battery and Ni-Cd trickle charging circuit are different. When a rechargeable lithium battery is charged

with a Ni-Cd trickle charging circuit, over-voltage may occur, resulting in deterioration of battery performance, leakage and corrosion. The

following steps must be taken to make full use of the superior features of rechargeable lithium batteries.

●

●●

● Charge Circuit of Rechargeable Lithium Batteries

A constant voltage charging system is recommended for rechargeable lithium batteries. Sample cases for a constant

voltage charge are shown as follows. Contact Sanyo for details regarding circuit design.

○

○○

○ Constant Voltage Charge System

Circuit examples when charging with a 5V line

(1) Charge/discharge control IC use

This IC controls charge voltage and has an overdischarge

protection circuit.

D: silicon or Schottky diode

IC: charge/discharge control IC (MB3790, or equivalent)

R: charge current control resistor

Cell: rechargeable lithium battery (ML)

ML series NBL series

3.10±0.15V 2.20±0.4V

2.95±0.15V 2.10±0.3V

at cell voltage 2.8V.

ML414, ML414R : under 0.2mA at cell voltage 1.5V.

ML614, ML621: under 0.45mA NBL414 : under 0.2mA

ML1220: under 2.25mA NBL414, NBL621: under 0.35mA

ML2016, ML2020, ML2430: under 4.5mA

-1

fully charged

for shipment

discharge current （μA）

discharge time in days

NBL621

NBL414

-1

fully charged

for shipment

discharge current （μA）

discharge time in days

ML2430

ML2020

ML2016

ML1220

ML621

ML614

ML414

ML414R

ML421

(2) Voltage regulator IC use

The voltage regulator IC is used for control charge voltage.

This circuit can prevent the voltage drop of the battery by

resistance at discharge.

D: silicon or Schottky diode

IC: voltage regulator IC (S-81232, or equivalent)

R: charge current control resistor

Cell: rechargeable lithium battery (ML)

(3) Zener diode (ZD) use

The zener diode is used for control charge voltage.

D1: silicon or Schottky diode

D2: silicon or Schottky diode

(use diode with under 0.1μA reverse current

at 2.0V reverse voltage.)

D3: silicon or Schottky diode

R1: charge voltage, charge current control resistor

R2: charge current control resistor

ZD: Zener diode

Cell: rechargeable lithium battery (ML)

Notice:

As shown in circuit example (3), if there is a possibility

that the battery might be charged by D2 reverse current,

choose a diode having reverse current below 0.1μA

when the reverse voltage of D2 is 3V. Be aware that the

higher the temperature rises, the larger the D2 reverse

current becomes. Using an ML614 and ML621 in the

circuit (3), however, is NOT recommended.

Examples of actual circuit (3) are shown on the right.

The model numbers of diodes described here are just

examples.

When applying for the UL standards, carefully observe

the following charge current values (when a protective

part has been shorted or opened):

ML414,ML414R, ML421, ML614: 56mA or below

ML621, ML1220, ML2016, ML2020, ML2430: 300mA or

below

Charging lime:

Hours required to fully charge a battery, after discharged

to a 2.0V end voltage.

Variations of battery voltage and charge capacity are

shown below.

Charging time：

：：

：Hours required to fully charge a battery, after

discharged to a 2.0V end voltage.

Variations of battery voltage and charge capacity are shown on

the next page.

The smaller the R value, the shorter the time required to fully

charge. However, considering charge, efficiency, battery

deterioration and circuit components, set the R value as shown in

the table.

■

■■

■ Charge Time vs. Cell Capacity■

■■

■ Charge Time vs. Cell Voltage

Circuits (1) and (2) are recommended when using solar batteries as the main power source.

example (1)

example (1)example (1)

example (1) example (2)

example (2)example (2)

example (2) example (3)

example (3)example (3)

example (3)

D1D1

D1Sanyo SB0203C

D2, D3

D2, D3D2, D3

D2, D3

ZDZD

ZD Sanyo GZA3.3X Sanyo GZA3.6X Sanyo GZA3.9Z

R1R1

R1180Ω

(R2 = 0Ω)

820Ω

(R2 = 0Ω)

3.9kΩ

(R2 = 0Ω)

Cell

CellCell

Cell

Charging time

Charging timeCharging time

Ch arging time approx. 20hr approx. 50hr approx. 130hr

Sanyo SB00703Q

ML2016

ML1220 ML2016ML2430

Value of R1over 360Ωover 180Ωover 180Ω

(1) Voltage regulator IC use

The voltage regulator IC is used for control charge voltage.

This circuit can prevent the voltage drop of the battery by

resistance at discharge.

D: silicon or Schottky diode

IC: voltage regulator IC

R: charge current control resistor

Cell: rechargeable lithium battery (NBL)

The above circuit is also recommended when using a solar battery as the main power source.

●

●●

● Charge Voltage of Batteries

Set the charging voltage of the battery at 2.8〜3.25V for the ML-

series and 1.8〜2.6V for the NBL-series. Design the circuit with as

low a voltage as possible.

When charging the battery at a high temperature for a long time,

the charging voltage should be set at 2.8〜3.1V for the ML-series

and 1.8〜2.4V for the NBL-series.

If charged with a higher voltage than these normal conditions, the

internal impedance will increase, causing a number of problems

including battery performance deterioration, swelling and leakage.

●

●●

● Constant Current Charge

When charged with a constant current, design the circuit so that

the cell voltage does not exceed upper limit of voltage range. The

charging current differs by the battery model. Consult Sanyo for

details.

●

●●

● Overdischarge

Lithium rechargeable batteries suffer deterioration in performance

when overdischarged for a long period, or when they are

frequently overdischarged. Deterioration is especially severe when

overdischarged at high temperatures. Mounting an overdischarge

prevention circuit is recommended when overdischarge occurs

frequently or for a long period, or when the temperature is high.

●

●●

● Maximum Charge Current of Batteries

According to UL directives, even if there is a problem into the

circuit components, the charge current in the battery should not

exceed Max. charge current below.

ML2430, ML2020, ML2016, ML1220, ML621: Max.300mA

ML614, ML414, ML414R: Max.56mA

NBL621,NBL414: 15mA

Consult Sanyo for details.

●

●●

● Series and Parallel Use of Batteries

Be sure to contact Sanyo when batteries are used in series or

parallel.

●

●●

● Placement of Batteries

When the battery is placed close to components that generate

heat, the battery may become hot. This may cause deformation of

the packing material, resulting in leakage and inferior performance.

●

●●

● Cleaning and Drying

The use of a solvent with electrical conducting properties may

cause the battery to short circuit, resulting in the deterioration of

the battery's performance. If the temperature rises above 85℃

when drying, the gasket becomes thermally deformed. This may

cause leakage or inferior battery performance. Be sure not exceed

85℃ when drying.

●

●●

● Storage of Batteries

Store batteries in a dry place that is not exposed to direct sunlight

and has little temperature fluctuation. Storage at high

temperatures or high humidity may influence the battery's

performance.

Recommended storage conditions:

temperature : 10℃ to 30℃

relative humidity : under 60％

●

●●

● Soldering

When soldering is required, use a battery equipped with a connection

terminal. Do not apply solder directly to the battery.

Hand soldering should be done as quickly as possible (within 5

seconds) at a temperature from 250℃ to 350℃.

If too much solder is used, solder may flow under the battery onto the

PC board, causing battery leakage or deterioration of battery

characteristics.

Be especially careful when the battery and PC board are positioned

close together.

Apply at 250℃〜270℃ within 5 seconds. If the battery is kept above

the soldering bath for a long time, or if it is dropped into the soldering

bath, it may burst open due to overheating. To avoid leakage due to

thermal deformation of the gasket material or deterioration of battery

performance, make sure that the battery temperature does not exceed

85℃. Consult Sanyo for details when soldering is applied with

reflowing system. The graph shows open circuit voltage recovery

characteristics after a presumed short circuit during automatic

soldering.

■

■■

■ Open Circuit Voltage Recovery After Short Circuit ML2430

■

■■

■ Open Circuit Voltage Recovery After Short Circuit NBL621

〔

〔〔

〔Battery Selection Guide〕

〕〕

〕

When choosing batteries, the rating of the device, operating load conditions, and operating temperature range should be considered.

Main technical factors are shown below.

Lithium battery characteristics depend on load and operating conditions.

Please consult SANYO for further details or inquiries.

Technical factors regarding battery selection (reference)

※Refer to the Key Circuit Design Points.

Discharge Condition

Discharge pattern

①Continuous discharge

Max. mA

AV. mA

Min. mA

Operating voltage

From V to V

②Pulse discharge

Max. mA

AV. mA

Min. mA

Operating time

______sec.

Non-operating time

_____sec.

Operating voltage

From V to V

Charge Condition

(rechargeable battery)

Charge method

Constant voltage charge

Charge voltage V

Charge time hr

Charge temperature 0C

Temperature /

Humidity

Conditions

Operating

From 0C %RH

to 0C %RH

Storage

From oC %RH

to 0C %RH

Battery Life

Total life

_______

operating

Storage

_______

Size Weight and

Connection Termina

dimensions

Diameter (Max.) mm

Height (Max.) hr

Length (Max.) mm

Width (Max.) g

Connection terminal

_____________________

Others

Mechanical conditions

(vibration, shock etc.)

Reflow conditions

Safety

etc.

Recommended Battery

Key Circuit Design

〔

〔〔

〔Battery Handling Precautions for Your Own Safety〕

〕〕

〕

Lithium batteries contain combustible materials such as lithium metal and organic solvent. Improper handling can lead to heat generation,

bursting or fire. To prevent accidents, follow these precautions and refer to them when precautions regarding lithium battery usage are

described in instruction manuals for equipment you are using.

●

●●

●Coin-type Primary and Rechargeable Lithium Batteries

Warning!

1. Do not charge.

(Primary batteries, CR series).

When this battery is charged, gas is generated inside

and raises internal pressure, resulting in fire, heat

generation, leakage or bursting.

2. Do not heat, disassemble nor

dispose of in fire.

Doing so damages the insulation materials or the safety

vent, resulting in fire, heat generation, leakage or bursting.

3. Do not insert batteries with the + and

- polarities reversed.

Make sure the polarities are in the right position when

inserting the batteries into equipment. When using 3 or

more batteries, the equipment may operate even though

one of the batteries is improperly inserted. But this may

cause leakage or bursting.

4. Do not short-circuit.

If the + and - come into contact with metal objects, short

circuiting occurs resulting in heat generation or bursting.

When carrying or storing batteries, avoid direct contact

with metal objects such as bracelets or key chains by

putting them in a separate bag.

5. Keep batteries out of children's reach.

If leaked liquid is ingested or a battery is swallowed, consult

a physician immediately.

6. In case of leakage or a strange smell,

keep away from fire to prevent

ignition of any leaked electrolyte.

7. Do not solder directly.

This can damage the insulation materials, resulting in

fire, heat generation, leakage or bursting.

8. Be sure to wrap each battery when

disposing or storing to avoid short

circuit.

Putting batteries together or in contact with metal objects

causes short circuiting, resulting in fire, heat generation

or bursting.

9. Do not force-discharge.

When a battery is force-discharged by an external power

source, the voltage drops to 0 or less (reversal voltage)

and gas is generated inside the battery. This may cause

fire, heat generation, leakage or bursting.

10. Do not charge with high current and

high voltage.

(Rechargeable batteries, ML, NBL series).

Doing so may generate gas inside the battery, resulting in

swelling, fire, heat generation or bursting.

Caution!

1. If leaked liquid gets in the eyes, wash them with

clean water and consult a physician immediately.

2. Do not use new and used batteries together. Do

not use different types of batteries together.

Doing so may cause heat generation, leakage or bursting.

3. Do not apply strong pressure to the batteries nor

handle roughly.

Doing so may cause heat generation, leakage or bursting.

4. Do not use nor leave the batteries in direct

sunlight nor in high-temperature areas.

Doing so may cause heat generation, leakage or bursting.

5. Avoid contact with water.

Doing so may cause heat generation.

6. Make sure to insert batteries without having

the + and - come in contact with metal

parts of equipment.

7. Read the equipment instruction manual and

precautions carefully before use.

Some usages or types of equipment do not suit

the specifications or performance

of these batteries.

8. Keep batteries away from direct sunlight, high

temperature and humidity.

Leaving batteries in such places may cause heat generation.

9. For proper disposal, follow local government

regulations.

●

●●

●Cylindrical-type Primary Lithium Batteries

Warning!

DO NOT CHARGE

1. Do not use batteries for unspecified

purposes.

Differences in voltage or terminal configuration may cause an

imperfect connection, fire, heat generation, leakage or bursting.

2. Do not charge.

When this battery is charged, gas is generated inside and raises

internal pressure, resulting in fire, heat generation, leakage or

bursting.

3. Do not heat, disassemble nor dispose

of in fire.

Doing so damages the insulation materials or the safety vent,

resulting in fire, heat generation, leakage or bursting.

4. Do not insert batteries with the + and

- polarities reversed.

Make sure the polarities are in the right position when inserting

the batteries into equipment. When using 3 or more batteries,

the equipment may operate even though one of the batteries is

improperly inserted. But this may cause leakage or bursting.

5. Do not short-circuit.

If the + and - come into contact with metal objects, short

circuiting occurs resulting in heat generation or bursting. When

carrying or storing batteries, avoid direct contact with metal

objects such as bracelets or key chains by putting them in a

separate bag.

6. Keep batteries out of children's reach.

If leaked liquid is ingested or a battery is swallowed, consult a

physician immediately.

7. In case of leakage or a strange smell,

keep away from fire to prevent ignition

of any leaked electrolyte.

8. Do not use new and used batteries

together. Do not use different types of

batteries together.

Doing so may cause fire, heat generation, leakage or bursting.

9. Do not solder directly.

Doing so may cause damage to insulation materials. It may

also cause fire, heat generation, leakage or bursting.

10. Do not apply strong pressure nor

handle roughly.

Doing so may cause fire, heat generation, leakage or bursting.

11. To prevent damage to the safety vent

inside the battery, do not deform in any

way.

12. Do not force-discharge.

When a battery is force-discharged by an external power

source, the voltage drops to 0 or less (reversal voltage) and

gas is generated inside the battery. This may cause fire, heat

generation, leakage or bursting.

13. Do not damage nor peel off the resin film

on the surface of the battery.

The battery surface is covered with thin vinyl film to prevent

short circuiting. Cutting with a knife or peeling off this film

causes short circuiting, resulting in heat generation or bursting.

Caution!

1. If leaked liquid gets in the eyes, wash them

with clean water and consult a physician

immediately.

2. Do not use nor leave the batteries in direct

sunlight nor in high-temperature areas.

Doing so may cause heat generation, leakage or bursting.

3. Avoid contact with water.

This can cause heat generation.

4. Read the equipment instruction manual

and precautions carefully before use. Some

usages or types of equipment do not suit

the specifications or performance of these

batteries.

5. Keep batteries away from direct sunlight,

high temperature and humidity.

6. Be sure to wrap each battery when

disposing or storing to avoid short circuit.

Leaving batteries in such places may cause heat generation.

Putting batteries together or in contact with metal objects causes

short circuiting, resulting in fire, heat generation or bursting.

7. For disposal, follow local government

regulations.

〔

〔〔

〔Precautions for Designing Equipment〕

〕〕

〕

As specified in these Battery Handling Precautions for Your Own Safety, improper handling of lithium batteries can lead to overheating, bursting

or fire. To prevent accidents, carefully observe the following precautions when designing equipment.

[for main power source]

Caution!

1. Select appropriate batteries for specific

uses.

To obtain maximum battery performance, be sure to select an

appropriate battery to meet the load, current, expected durability

and other equipment operating conditions. Improper selection may

generate excessive current flow, which in turn can cause heat

generation, fire or bursting, resulting in damage to the equipment.

Consult SANYO for details.

2. Observe the following precautions when

using two or more batteries in series or

in parallel.

Do not connect more than three cells in series. Do not use more

than one assembled battery pack (including 2CR5, CR-P2 and

2CR-1/3N). When connecting batteries in parallel, be sure to

mount a diode between the batteries.

When using two or more batteries, the equipment must be

designed so that the lithium battery will not be used together with

other batteries of different capacity, type or brand. Consult

SANYO when incorporating two or more batteries into the

equipment.

If different types of batteries are used together, the difference in

voltage, capacity, etc. may cause overdischarge of a battery with

inferior characteristics, resulting in heat generation, fire, bursting

or combustion.

If different types of batteries are used in parallel, the batteries

with inferior characteristics may be charged by the other

batteries, resulting in heat generation, fire, bursting or

combustion.

3. Use an independent power circuit for the

battery.

If equipment is designed with a dual or triple power source system

where the lithium battery is combined with other battery types or

an AC power source, an independent circuit must be provided to

prevent the lithium battery from forced charge or discharge by

other power sources in use.

4. Incorporate maximum current protection

devices.

To avoid excessive current flow due to an equipment circuit

malfunction, incorporate appropriate protective devices such as

a thermal fuse, resistor and PTC device that meet specific usage

conditions.

If excessive current flows from the battery due to an equipment

circuit malfunction, the circuit or equipment may be damaged. It

also may cause heat generation, fire, bursting or combustion.

[When using as auxiliary power source for

memory backup]

Caution!

1. Use an independent circuit for batteries.

To prevent lithium batteries from forced charge or discharge by the

main power source, use an independent circuit wherever possible.

2. Observe the following precautions when

connecting to a separate main power source.

If there is any possibility that electric current might flow from the

separate main power source to charge the battery, use a diode and

protective resistor in combination. For details, refer to the Primary

Lithium Batteries for Memory Backup ﾑ Key Design Points, pages 5

and 6.

●

●●

●Rechargeable Lithium Batteries

Caution!

1. Consult SANYO when using two or more

batteries in series or in parallel.

2. Observe the charging conditions

(voltage and current).

Refer to the Rechargeable Lithium Batteries for Memory Backup -

Key Design Points for, pages 9 to 11.

●

●●

●Battery Holder and Compartment Structures

Caution!

1. Take special care when designing

battery holders and compartments.

A SANYO special battery holder is recommended.

The battery holder must be constructed so that the positive and

negative terminals of the battery cannot be reversed. Be especially

careful when using two or more batteries. The correct battery

placement direction (positive and negative polarity indications) and

installation instructions must be marked clearly and permanently on

the holder.

The battery holder must be constructed to prevent mixed use with

other batteries of different characteristics including voltage and type

of battery.

The battery compartment must be provided with a gas release

structure. For use with equipment of water-resistant construction, or

if there is any possibility of exposure to water, the compartment must

include features to prevent water from entering (such as a

waterproofing or dip-proof design).

If the battery compartment is airtight, it must have an explosion-

proof structure such as an explosion-proof vent or thin wall area for

emergency venting. If the equipment has any heat source, the

compartment must either be located away from the heat source

preventing the battery from exposure to heat or be constructed to

resist heat.

The battery compartment must be constructed so that batteries

cannot be easily removed by small children.

If the positive and negative terminals of a battery are reversed (when

two or more batteries are used), the improperly inserted battery may

be charged, resulting in heat, fire, bursting or combustion.

If gas is generated within an airtight battery compartment, its internal

pressure will rise, causing compartment explosion. If water enters

into the compartmental, it may cause electrolysis in the battery,

generating gas and causing an excessive rise in internal pressure

which is hazardous. To prevent equipment from exploding, an

airtight compartment must include an explosion-proof structure such

as a thin wall area for emergency venting.

Caution!

Be extremely careful to select contact materials and shapes that

provide sufficient electrical contact.

Avoid electrical contact with areas on the battery and circuit except

for designated contact points.

The contacts must be constructed to prevent the reversal of the

positive and negative terminals, thus taking the battery structure and

difference in the shapes of positive and negative terminals into

consideration.

Do not directly apply solder to the battery terminals.

inappropriate contact and/or terminal shapes may cause inferior

contact, resulting in heat generation or short circuiting.

●

●●

●Primary Lithium Batteries

●

●●

●Precautions for Contacts and Terminals