DATA SHEE
T
SURGE CHIP RESISTORS
SR series
20%, 10%, 5%
sizes 0805/1206/1218/2010/2512
RoHS compliant & Halogen free
Product specification – Mar 18, 2011 V.1
Chip Resistor Surface Mount
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Product specification
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8
SERIES
SR 0805/1206/1218/2010/2512
ORDERING INFORMATION - GLOBAL PART NUMBER
Part number is identified by the series name, size, tolerance, packaging
type, temperature coefficient, taping reel and resistance value.
SCOPE
This specification describes
SR0805 to SR2512 chip resistors
with lead-free terminations made by
thick film process.
APPLICATIONS
Telecommunications
Power supplies
FEATURES
Superior to SR series in pulse
withstanding voltage and surge
withanding voltage.
MSL class: MSL 1
Halogen free epoxy
RoHS compliant
- Products with lead-free
terminations meet RoHS
requirements
- Pb-glass contained in electrodes,
resistor element and glass are
exempted by RoHS
Reduce environmentally
hazardous waste
High component and equipment
reliability
ORDERING EXAMPLE
The ordering code for an SR0805
chip resistor, value 10 KX with
±5% tolerance, supplied in 7-inch
tape reel is: SR0805JR-0710KL.
GLOBAL PART NUMBER
SR XXXX X X X XX XXXX L
(1) (2) (3) (4) (5) (6) (7)
(1) SIZE
0805 / 1206 / 1218 / 2010 / 2512
(2) TOLERANCE
J = ±5%
K = ±10%
M = ±20%
(3) PACKAGING TYPE
R = Paper taping reel
K = Embossed taping reel
(4) TEMPERATURE COEFFICIENT OF RESISTANCE
– = Based on spec.
(5) TAPING REEL
07 = 7 inch dia. Reel
10 = 10 inch dia. Reel 13 = 13 inch dia. Reel
(6) RESISTANCE VALUE
1 Ω ≤ R ≤ 100 KΩ
There are 2~4 digits indicated the resistance value. Letter R/K/M is decimal point, no
need to mention the last zero after R/K/M, e.g.1K2, not 1K20.
Detailed coding rules of resistance are shown in the table of “Resistance rule of
global part number”.
(7) DEFAULT CODE
Letter L is the system default code for ordering only. (Note)
Resistance rule of global part
number
Resistance coding
rule Example
XRXX
(1 to 9.76 Ω)
1R = 1 Ω
1R5 = 1.5 Ω
9R76 = 9.76 Ω
XXRX
(10 to 97.6 Ω)
10R = 10 Ω
97R6 = 97.6 Ω
XXXR
(100 to 976 Ω) 100R = 100 Ω
XKXX
(1 to 9.76 KΩ)
1K = 1,000 Ω
9K76 = 9760 Ω
XXKX
(10 to 97.6 KΩ)
10K = 10,000 Ω
97K6= 976,000 Ω
XXXK
(100 KΩ) 100K = 100,000 Ω
Chip Resistor Surface Mount
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SERIES
SR 0805/1206/1218/2010/2512
MARKING
SR1218
E-24 series: 3 digits
First two digits for significant figure and 3rd digit for number of zeros
SR0805 / SR1206 / SR2010 / SR2512
E-24 series: 3 digits
First two digits for significant figure and 3rd digit for number of zeros
NOTE
For further marking information, please refer to data sheet “Chip resistors marking”.
Fig. 2 Value=10 KΩ
YNSC001
03
overcoat
protective glass
resistive layer
inner electrode
termination (Ni/matte tin)
ceramic substrate
marking layer
inner electrode
YNSC095
Fig. 3 Chip resistor outlines
O
OU
UT
TL
LI
IN
NE
ES
S
CONSTRUCTION
The resistor is constructed on top of a high-grade
ceramic body. Internal metal electrodes are added at
each end and connected by a resistive glaze. The
resistive glaze is covered by a lead-free glass. The
composition of the glaze is adjusted to give the
approximately required resistance value. The whole
element is covered by a protective overcoat. The
top of overcoat is marked with the resistance value.
Finally, the two external terminations (Ni/matte tin)
are added, as shown in Fig.3.
YNSC09
6
SR0805/1206/2010/2512 SR1218 Side view for all type
I
1
I
2
I
1
L L
H
W
W
Fig. 4 Chip resistor dimensions
For dimension, please refer to Table 1
TYPE L (mm) W (mm) H (mm) I1 (mm) I2 (mm)
SR0805 2.00 ±0.1
0
1.25 ±0.1
0
0.50 ±0.1
0
0.35 ±0.2
0
0.35 ±0.2
0
SR1206 3.10 ±0.1
0
1.60 ±0.1
0
0.55 ±0.1
0
0.45 ±0.2
0
0.40 ±0.2
0
SR1218 3.10 ±0.1
0
4.60 ±0.1
0
0.55 ±0.1
0
0.45 ±0.2
0
0.40 ±0.2
0
SR2010 5.00 ±0.1
0
2.50 ±0.15 0.55 ±0.1
0
0.55 ±0.15 0.50 ±0.2
SR2512 6.35 ±0.1
0
3.10 ±0.15 0.55 ±0.1
0
0.60 ±0.2
0
0.50 ±0.2
0
Table 1
DIMENSIONS
Fig. 1 Value=10 KΩ
YNSC099
Chip Resistor Surface Mount
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SERIES
SR 0805/1206/1218/2010/2512
CHARACTERISTICS
TYPE POWER RESISTANCE RANGE Operating
Temperature Range
Max.
Working
Voltage
Max.
Overload
Voltage
Dielectric
Withstanding
Voltage
Temperature
Coefficient of
Resistance
SR0805 1/8 W 150 V 300 V 300 V
SR1206 1/4 W 150 V 400 V 500 V
SR1218 1 W 200 V 400 V 500 V
SR2010 3/4 W 200 V 400 V 500 V
SR2512 1 W
E24 5%, 10%, 20%
1 Ω ≤ R ≤ 100 KΩ –55 °C to +155 °C
200 V 400 V 500 V
±200 ppm/°C
ELECTRICAL CHARACTERISTICS
Table 2
FOOTPRINT AND SOLDERING PROFILES
Recommended footprint and soldering profiles, please refer to data sheet “Chip resistors mounting”.
PACKING STYLE AND P
A
CKAGING QUANTITY
PACKING STYLE REEL DIMENSION SR0805 SR1206 SR1218 SR2010 SR2512
Paper taping reel (R) 7" (178 mm) 5,000 5,000 --- --- ---
10" (254 mm) 10,000 10,000 --- --- ---
13" (330 mm) 20,000 20,000 --- --- ---
Embossed taping reel (K) 7" (178 mm) --- --- 4,000 4,000 4,000
NOTE
1. For paper/embossed tape and reel specification/dimensions, please refer to data sheet “Chip resistors packing”.
Table 3 Packing style and packaging quantity
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Product specification
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SERIES
SR 0805/1206/1218/2010/2512
MLB206_2
70 10055 50
T
amb( C)
o
(%P )
rated
0
0
50
100
155
P
handbook, halfpage
Fig. 4 Maximum dissipation (Pmax) in percentage of rated power
as a function of the operating ambient temperature (Tamb)
FUNCTIONAL DESCRIPTION
O
OP
PE
ER
RA
AT
TI
IN
NG
G
T
TE
EM
MP
PE
ER
RA
AT
TU
UR
RE
E
R
RA
AN
NG
GE
E
Range: –55 °C to +155 °C
P
PO
OW
WE
ER
R
R
RA
AT
TI
IN
NG
G
Each type rated power at 70 °C:
SR0805 = 1/8 W (0.125W)
SR1206 = 1/4 W (0.25W)
SR1218 = 1 W
SR2010 = 3/4W (0.75W)
SR2512 = 1 W
RATED VOLTAGE
The DC or AC (rms) continuous working voltage
corresponding to the rated power is determined by
the following formula:
V = √(P X R)
Where
V = Continuous rated DC or AC (rms) working voltage (V)
P = Rated power (W)
R = Resistance value (X)
P
PU
UL
LS
SE
E
L
LO
OA
AD
D
B
BE
EH
HA
AV
VI
IO
OR
R
10
3
10
4
1
10
10
2
110
1
Pmax
(W)
10
2
10
3
10
2
10
1
Pulse limiting electric power
Pulse duration t i (ms)
0805
YNSC093
1206
1218
2010
2512
Fig. 5 Pulse-Load behavio
r
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SERIES
SR 0805/1206/1218/2010/2512
TESTS AND REQUIREMENTS
TEST TEST METHOD PROCEDURE REQUIREMENTS
At +25/–55 °C and +25/+125 °C Refer to table 2 Temperature
Coefficient of
Resistance (T.C.R.)
MIL-STD-202 Method 304
Formula:
T.C.R= ------------------------- × 106 (ppm/°C)
Where
t1=+25 °C or specified room temperature
t2=–55 °C or +125 °C test temperature
R1=resistance at reference temperature in ohms
R2=resistance at test temperature in ohms
Short Time
Overload
IEC60115-1 4.13 2.5 times of rated voltage or maximum overload
voltage whichever is less for 5 sec
at room temperature
±(2.0%+0.05 Ω)
High Temperature
Exposure
IEC 60068-2-2 1,000 hours at TA = 155 °C ±5 °C, unpowered ±(3.0%+0.05 Ω)
Humidity IEC 60115-1 4.24.8
Steady state for 1,000 hours at 40 °C / 95% R.H.
RCWV applied for 1.5 hours on and 0.5 hour off
±(3.0%+0.05 Ω)
Life IEC 60115-1 4.25.1 1,000 hours at 70±2 °C, derated voltage applied fo
r
1.5 hours on, 0.5 hour off, still-air required
±(3.0%+0.05 Ω)
Resistance to
Soldering Heat
IEC 60068-2-58 Condition B, no pre-heat of samples
Lead-free solder, 260±5 °C, 10±1 seconds
immersion time
Procedure 2 for SMD: devices fluxed and
cleaned with isopropanol
±(1.0%+0.05 Ω)
No visible damage
Temperature Cycling JESD22-A104C -55/+125 °C for 1 cycle per hour, with 5 cycles.
Devices mounted
±(1.0%+0.05 Ω)
Table 4 Test condition, procedure and requirements
R2–R1
R1(t2–t1)
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SERIES
SR 0805/1206/1218/2010/2512
TEST TEST METHOD PROCEDURE REQUIREMENTS
Solderability
- Wetting
J-STD-002
Electrical Test not required Magnification 50X
SMD conditions:
Immerse the specimen into the solder pot at
235±3°C for 2±0.5 seconds.
Well tinned (≥95% covered)
No visible damage
Board Flex IEC 60068-2-21
IEC 60115-1 4.33
Chips mounted on a 90mm glass epoxy resin
PCB (FR4)
Bending for 0805: 3 mm
1206 and above: 2 mm
Holding time: minimum 60 seconds
±(1.0%+0.05 Ω)
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Product specification
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SERIES
SR 0805/1206/1218/2010/2512
REVISION HISTORY
“ Yageo reserves all the rights for revising the content of this datasheet without further notification, as long as the products are unchanged. Any
product change will be announced by PCN.”
"The reimbursement is limited to the value of the products."
REVISION DATE CHANGE NOTIFICATION DESCRIPTION
Version 1 Mar 18, 2011 - - Change to dual brand datasheet that describes SR0805 to SR2512 with
RoHS compliant
- Define global part number
Version 0 Oct 19, 2004 - -