S-5844A Series
www.sii-ic.com TEMPERATURE SWITCH IC (THERMOSTAT IC)
© Seiko Instruments Inc., 2011-2013 Rev.2.3_00
Seiko Instruments Inc. 1
The S-5844A Series is a temperature switch IC (thermostat IC) which detects the temperature with a temperature accuracy of
±2.5°C. The output inverts when temperature reaches the detection temperature. The S-5844A Series restores the output
voltage when the temperature drops to the level of release temperature.
The S-5844A Series operates at the lower power supply voltage of 1.65 V and its current consumption is 0.18 μA typ. due to
CMOS configuration.
A temperature sensor with the negative temperature coefficient, a reference voltage generation circuit and a comparator are
integrated on one chip, and enclosed into the packages SOT-23-5 and SNT-4A, and the super-small package HSNT-4 (1010).
Features
• Detection temperature: TDET = +50°C to +100°C, +5°C step, detection accuracy: ±2.5°C
• Low voltage operation: VDD = 1.65 V min.
• Low current consumption: IDD = 0.18 μA typ. (Ta = +25°C)
• Hysteresis temperature: selectable in 5°C, 10°C, 15°C or 20°C
• Selectable output logic in active "H" or active "L"
• Selectable output form in CMOS or Nch open-drain
• Operation temperature range: Ta = −40°C to +125°C
• Lead-free (Sn 100%), halogen-free
Applications
• Fan control
• Air conditioning system
• Mobile phone
• Game console
• Various electronic devices
Packages
• SOT-23-5
• SNT-4A
• HSNT-4 (1010)
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 2
Block Diagrams
1. CMOS output product
VSS
VDD
DET
+
−
TEST
Logic circuit
(selectable)
Temperature
sensor
Reference voltage
generation circuit
Figure 1
2. Nch open-drain output product
VSS
VDD
DET
+
−
TEST
Logic circuit
(selectable)
Temperature
sensor
Reference voltage
generation circuit
Figure 2
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 3
Product Name Structure
Users are able to select the detection temperature, output form and logic, hysteresis temperature, and package for the
S-5844A Series.
1. Product name
S-5844A xx x x - xxxx U 3
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications*1
M5T1: SOT-23-5, Tape
I4T1: SNT-4A, Tape
A4T2: HSNT-4 (1010), Tape
Hysteresis temperature*2
A: 5°C
B: 10°C
C: 15°C
D: 20°C
Output form and output logic*3
A: CMOS output, active "H"
B: CMOS output, active "L"
C: Nch open-drain output, active "H"
D: Nch open-drain output, active "L"
Detection temperature*4
50 to 95, A0
(When detection temperature is +80°C, it is expressed as 80.
When detection temperature is +100°C, it is expressed as A0.)
*1. Refer to the tape drawing.
*2. The hysteresis temperature is selectable in 5°C, 10°C, 15°C, or 20°C.
However, if the detection temperature is +50°C, select the hysteresis temperature in 5°C or 10°C.
*3. For the DET pin output, selectable the output logic active "H" or active "L".
For the DET pin output, selectable the output form CMOS or Nch open-drain.
*4. Detection temperature (TDET) is settable in +50°C to +100°C, in +5°C step.
2. Packages
Table 1 Package Drawing Codes
Package Name Dimension Tape Reel Land
SOT-23-5 MP005-A-P-SD MP005-A-C-SD MP005-A-R-SD −
SNT-4A PF004-A-P-SD PF004-A-C-SD PF004-A-R-SD PF004-A-L-SD
HSNT-4 (1010) PL004-A-P-SD PL004-A-C-SD PL004-A-R-SD PL004-A-L-SD
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 4
3. Product name list
3. 1 SOT-23-5
Table 2
Product Name
Detection
Temperature
(TDET)
DET Pin Output Form DET Pin Output Logic
Hysteresis
Temperature
(THYS)
S-5844A50DB-M5T1U3 +50°C Nch open-drain Active "L" 10°C
S-5844A55CB-M5T1U3 +55°C Nch open-drain Active "H" 10°C
S-5844A55CC-M5T1U3 +55°C Nch open-drain Active "H" 15°C
S-5844A55CD-M5T1U3 +55°C Nch open-drain Active "H" 20°C
S-5844A55DB-M5T1U3 +55°C Nch open-drain Active "L" 10°C
S-5844A60CB-M5T1U3 +60°C Nch open-drain Active "H" 10°C
S-5844A60CC-M5T1U3 +60°C Nch open-drain Active "H" 15°C
S-5844A60CD-M5T1U3 +60°C Nch open-drain Active "H" 20°C
S-5844A60DB-M5T1U3 +60°C Nch open-drain Active "L" 10°C
S-5844A65CB-M5T1U3 +65°C Nch open-drain Active "H" 10°C
S-5844A65CC-M5T1U3 +65°C Nch open-drain Active "H" 15°C
S-5844A65CD-M5T1U3 +65°C Nch open-drain Active "H" 20°C
S-5844A65DB-M5T1U3 +65°C Nch open-drain Active "L" 10°C
S-5844A70CB-M5T1U3 +70°C Nch open-drain Active "H" 10°C
S-5844A70CC-M5T1U3 +70°C Nch open-drain Active "H" 15°C
S-5844A70CD-M5T1U3 +70°C Nch open-drain Active "H" 20°C
S-5844A70DB-M5T1U3 +70°C Nch open-drain Active "L" 10°C
S-5844A75CB-M5T1U3 +75°C Nch open-drain Active "H" 10°C
S-5844A75CC-M5T1U3 +75°C Nch open-drain Active "H" 15°C
S-5844A75CD-M5T1U3 +75°C Nch open-drain Active "H" 20°C
S-5844A75DB-M5T1U3 +75°C Nch open-drain Active "L" 10°C
S-5844A80CB-M5T1U3 +80°C Nch open-drain Active "H" 10°C
S-5844A80CC-M5T1U3 +80°C Nch open-drain Active "H" 15°C
S-5844A80CD-M5T1U3 +80°C Nch open-drain Active "H" 20°C
S-5844A80DB-M5T1U3 +80°C Nch open-drain Active "L" 10°C
S-5844A85CB-M5T1U3 +85°C Nch open-drain Active "H" 10°C
S-5844A85CC-M5T1U3 +85°C Nch open-drain Active "H" 15°C
S-5844A85CD-M5T1U3 +85°C Nch open-drain Active "H" 20°C
S-5844A85DB-M5T1U3 +85°C Nch open-drain Active "L" 10°C
S-5844A90CB-M5T1U3 +90°C Nch open-drain Active "H" 10°C
S-5844A90CC-M5T1U3 +90°C Nch open-drain Active "H" 15°C
S-5844A90CD-M5T1U3 +90°C Nch open-drain Active "H" 20°C
S-5844A90DB-M5T1U3 +90°C Nch open-drain Active "L" 10°C
S-5844A95CB-M5T1U3 +95°C Nch open-drain Active "H" 10°C
S-5844A95CC-M5T1U3 +95°C Nch open-drain Active "H" 15°C
S-5844A95CD-M5T1U3 +95°C Nch open-drain Active "H" 20°C
S-5844A95DB-M5T1U3 +95°C Nch open-drain Active "L" 10°C
Remark Please contact our sales office for products with specifications other than the above.
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 5
3. 2 SNT-4A
Table 3
Product Name
Detection
Temperature
(TDET)
DET Pin Output Form DET Pin Output Logic
Hysteresis
Temperature
(THYS)
S-5844A50DB-I4T1U3 +50°C Nch open-drain Active "L" 10°C
S-5844A55CB-I4T1U3 +55°C Nch open-drain Active "H" 10°C
S-5844A55CC-I4T1U3 +55°C Nch open-drain Active "H" 15°C
S-5844A55CD-I4T1U3 +55°C Nch open-drain Active "H" 20°C
S-5844A55DB-I4T1U3 +55°C Nch open-drain Active "L" 10°C
S-5844A60CB-I4T1U3 +60°C Nch open-drain Active "H" 10°C
S-5844A60CC-I4T1U3 +60°C Nch open-drain Active "H" 15°C
S-5844A60CD-I4T1U3 +60°C Nch open-drain Active "H" 20°C
S-5844A60DB-I4T1U3 +60°C Nch open-drain Active "L" 10°C
S-5844A65CB-I4T1U3 +65°C Nch open-drain Active "H" 10°C
S-5844A65CC-I4T1U3 +65°C Nch open-drain Active "H" 15°C
S-5844A65CD-I4T1U3 +65°C Nch open-drain Active "H" 20°C
S-5844A65DB-I4T1U3 +65°C Nch open-drain Active "L" 10°C
S-5844A70CB-I4T1U3 +70°C Nch open-drain Active "H" 10°C
S-5844A70CC-I4T1U3 +70°C Nch open-drain Active "H" 15°C
S-5844A70CD-I4T1U3 +70°C Nch open-drain Active "H" 20°C
S-5844A70DB-I4T1U3 +70°C Nch open-drain Active "L" 10°C
S-5844A75CB-I4T1U3 +75°C Nch open-drain Active "H" 10°C
S-5844A75CC-I4T1U3 +75°C Nch open-drain Active "H" 15°C
S-5844A75CD-I4T1U3 +75°C Nch open-drain Active "H" 20°C
S-5844A75DB-I4T1U3 +75°C Nch open-drain Active "L" 10°C
S-5844A80CB-I4T1U3 +80°C Nch open-drain Active "H" 10°C
S-5844A80CC-I4T1U3 +80°C Nch open-drain Active "H" 15°C
S-5844A80CD-I4T1U3 +80°C Nch open-drain Active "H" 20°C
S-5844A80DB-I4T1U3 +80°C Nch open-drain Active "L" 10°C
S-5844A85CB-I4T1U3 +85°C Nch open-drain Active "H" 10°C
S-5844A85CC-I4T1U3 +85°C Nch open-drain Active "H" 15°C
S-5844A85CD-I4T1U3 +85°C Nch open-drain Active "H" 20°C
S-5844A85DB-I4T1U3 +85°C Nch open-drain Active "L" 10°C
S-5844A90CB-I4T1U3 +90°C Nch open-drain Active "H" 10°C
S-5844A90CC-I4T1U3 +90°C Nch open-drain Active "H" 15°C
S-5844A90CD-I4T1U3 +90°C Nch open-drain Active "H" 20°C
S-5844A90DB-I4T1U3 +90°C Nch open-drain Active "L" 10°C
S-5844A95CB-I4T1U3 +95°C Nch open-drain Active "H" 10°C
S-5844A95CC-I4T1U3 +95°C Nch open-drain Active "H" 15°C
S-5844A95CD-I4T1U3 +95°C Nch open-drain Active "H" 20°C
S-5844A95DB-I4T1U3 +95°C Nch open-drain Active "L" 10°C
Remark Please contact our sales office for products with specifications other than the above.
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 6
3. 3 HSNT-4 (1010)
Table 4
Product Name
Detection
Temperature
(TDET)
DET Pin Output Form DET Pin Output Logic
Hysteresis
Temperature
(THYS)
S-5844A50DB-A4T2U3 +50°C Nch open-drain Active "L" 10°C
S-5844A55CB-A4T2U3 +55°C Nch open-drain Active "H" 10°C
S-5844A55CC-A4T2U3 +55°C Nch open-drain Active "H" 15°C
S-5844A55CD-A4T2U3 +55°C Nch open-drain Active "H" 20°C
S-5844A55DB-A4T2U3 +55°C Nch open-drain Active "L" 10°C
S-5844A60CB-A4T2U3 +60°C Nch open-drain Active "H" 10°C
S-5844A60CC-A4T2U3 +60°C Nch open-drain Active "H" 15°C
S-5844A60CD-A4T2U3 +60°C Nch open-drain Active "H" 20°C
S-5844A60DB-A4T2U3 +60°C Nch open-drain Active "L" 10°C
S-5844A65CB-A4T2U3 +65°C Nch open-drain Active "H" 10°C
S-5844A65CC-A4T2U3 +65°C Nch open-drain Active "H" 15°C
S-5844A65CD-A4T2U3 +65°C Nch open-drain Active "H" 20°C
S-5844A65DB-A4T2U3 +65°C Nch open-drain Active "L" 10°C
S-5844A70CB-A4T2U3 +70°C Nch open-drain Active "H" 10°C
S-5844A70CC-A4T2U3 +70°C Nch open-drain Active "H" 15°C
S-5844A70CD-A4T2U3 +70°C Nch open-drain Active "H" 20°C
S-5844A70DB-A4T2U3 +70°C Nch open-drain Active "L" 10°C
S-5844A75CB-A4T2U3 +75°C Nch open-drain Active "H" 10°C
S-5844A75CC-A4T2U3 +75°C Nch open-drain Active "H" 15°C
S-5844A75CD-A4T2U3 +75°C Nch open-drain Active "H" 20°C
S-5844A75DB-A4T2U3 +75°C Nch open-drain Active "L" 10°C
S-5844A80CB-A4T2U3 +80°C Nch open-drain Active "H" 10°C
S-5844A80CC-A4T2U3 +80°C Nch open-drain Active "H" 15°C
S-5844A80CD-A4T2U3 +80°C Nch open-drain Active "H" 20°C
S-5844A80DB-A4T2U3 +80°C Nch open-drain Active "L" 10°C
S-5844A85CB-A4T2U3 +85°C Nch open-drain Active "H" 10°C
S-5844A85CC-A4T2U3 +85°C Nch open-drain Active "H" 15°C
S-5844A85CD-A4T2U3 +85°C Nch open-drain Active "H" 20°C
S-5844A85DB-A4T2U3 +85°C Nch open-drain Active "L" 10°C
S-5844A90CB-A4T2U3 +90°C Nch open-drain Active "H" 10°C
S-5844A90CC-A4T2U3 +90°C Nch open-drain Active "H" 15°C
S-5844A90CD-A4T2U3 +90°C Nch open-drain Active "H" 20°C
S-5844A90DB-A4T2U3 +90°C Nch open-drain Active "L" 10°C
S-5844A95CB-A4T2U3 +95°C Nch open-drain Active "H" 10°C
S-5844A95CC-A4T2U3 +95°C Nch open-drain Active "H" 15°C
S-5844A95CD-A4T2U3 +95°C Nch open-drain Active "H" 20°C
S-5844A95DB-A4T2U3 +95°C Nch open-drain Active "L" 10°C
Remark Please contact our sales office for products with specifications other than the above.
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 7
Pin Configurations
1. SOT-23-5
Table 5
Pin No. Symbol Description
1 TEST*1 Test pin
2 VSS GND pin
3 DET Output pin
4 NC*2 No connection
5 VDD Power supply pin
132
45
Top view
Figure 3
*1. Connect the TEST pin to the VSS pin, or leave it open.
*2. The NC pin is electrically open.
The NC pin can be connected to the VDD pin or the VSS pin.
2. SNT-4A
Table 6
Pin No. Symbol Description
1 DET Output pin
2 VSS GND pin
3 TEST*1 Test pin
4 VDD Power supply pin
4
32
1
Top view
Figure 4
*1. Connect the TEST pin to the VSS pin, or leave it open.
3. HSNT-4 (1010)
Table 7
Pin No. Symbol Description
1 DET Output pin
2 VSS GND pin
3 TEST*1 Test pin
4 VDD Power supply pin
Top view
14
23
Bottom view
41
32
*1
*1. Connect the heatsink of backside at
shadowed area to the board, and
set electric potential open or GND.
However, do not use it as the
function of electrode.
Figure 5
*1. Connect the TEST pin to the VSS pin, or leave it open.
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 8
Absolute Maximum Ratings
Table 8
(Ta = +25°C unless otherwise specified)
Item Symbol Absolute Maximum Rating Unit
Power supply voltage (VSS = 0 V) VDD V
SS + 6.0 V
Pin voltage VTEST V
SS − 0.3 to VDD + 0.3 V
CMOS output product VSS − 0.3 to VDD + 0.3 V
Output voltage Nch open-drain output product VDET VSS − 0.3 to VSS + 6.0 V
Pch driving current IDETH 10 mA
Output pin current Nch driving current IDETL 10 mA
SOT-23-5 600*1 mW
SNT-4A 300*1 mW
Power dissipation
HSNT-4 (1010)
PD
340*1 mW
Operation ambient temperature Topr −40 to +125 °C
Storage temperature Tstg −55 to +150 °C
*1. When mounted on board
[Mounted board]
(1) Board size: 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name: JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 9
DC Electrical Characteristics
1. CMOS output product
Table 9
(VDD = 3.0 V, Ta = +25°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Power supply voltage VDD − 1.65 − 5.5 V 1
Detection temperature*1 +TD − T
DET − 2.5 TDET T
DET + 2.5 °C 1
Hysteresis temperature*2 THYS − − 5, 10, 15, 20 − °C 1
VDETH I
DETH = 0.5 mA VDD − 0.5 − − V 2
Output voltage VDETL I
DETL = 0.5 mA − − 0.5 V 3
Current consumption
during operation IDD − − 0.18 0.5 μA 1
*1. T
DET: Set value of detection temperature
*2. The hysteresis temperature is selectable in 5°C, 10°C, 15°C, or 20°C.
However, if the detection temperature is +50°C, select the hysteresis temperature in 5°C or 10°C.
2. Nch open-drain output product
Table 10
(VDD = 3.0 V, Ta = +25°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Power supply voltage VDD − 1.65 − 5.5 V 1
Detection temperature*1 +TD − T
DET − 2.5 TDET T
DET + 2.5 °C 1
Hysteresis temperature*2 THYS − − 5, 10, 15, 20 − °C 1
Output voltage VDETL I
DETL = 0.5 mA − − 0.5 V 3
Leakage current ILEAK V
DET = 5.5 V − − 0.1 μA 4
Current consumption
during operation IDD − − 0.18 0.5 μA 1
*1. T
DET: Set value of detection temperature
*2. The hysteresis temperature is selectable in 5°C, 10°C, 15°C, or 20°C.
However, if the detection temperature is +50°C, select the hysteresis temperature in 5°C or 10°C.
[Fahrenheit ⇔ Celsius conversion equation]
°C = (°F − 32) × 5 / 9
°F = 32 + °C × 9 / 5
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 10
Test Circuits
TEST
VDD
VSS
DET
S-5844A
Series
V
SS
or
Open
A
V
V
C
L
C
IN
*1. Resistor (R) is unnecessary for the CMOS output product.
Figure 6 Test Circuit 1
TEST
VDD
VSS
DET
S-5844A
Series
VSS or
Open
V
V
CIN
Figure 7 Test Circuit 2
TEST
VDD
VSS
DET
S-5844A
Series
V
SS
or
Open
V
V
C
IN
Figure 8 Test Circuit 3
TEST
VDD
VSS
DET
S-5844A
Series
V
SS
or
Open
A
V
V
C
IN
Figure 9 Test Circuit 4
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 11
Operation
The S-5844A Series is a temperature switch IC (thermostat IC) which detects temperature and sends a signal to an
external device.
The users can select various combinations of the parameters such as the detection temperature, the output form and logic,
and hysteresis temperature.
Following is about the operation when the DET pin output logic is active "H".
After applying the power supply, the S-5844A Series starts to detect the temperature. If the temperature is lower than the
detection temperature (+TD), the DET pin output keeps "L". After that, the temperature rises and exceeds the detection
temperature, and the DET pin goes in "H".
After the detection, the temperature drops and reaches the release temperature (+TD − THYS), the DET pin output returns to
"L".
Figure 10 is the timing chart.
L
DET pin output
Ambient temperature (Ta)
H
Detection temperature (+T
D
)
Hysteresis temperature
(T
HYS
)
Release temperature (+T
D
− T
HYS
)
Figure 10 Operation when the DET Pin Output Logic is Active "H"
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 12
Standard Circuit
TEST
VDD
VSS
DET
S-5844A
Series
*1. Resistor (R) is unnecessary for the CMOS output product.
Figure 11
Caution The above connection diagram will not guarantee successful operation. Perform thorough evaluation
using actual application to set the constant.
Precautions
• If power impedance is high, the S-5844A Series may malfunction due to voltage drop caused by feed-through current.
Set wire patterns carefully for lower power impedance.
• Set a capacitor (CIN) of 0.1 μF or more between the VDD pin and VSS pin for stabilization.
• The S-5844A Series may malfunction if the power supply voltage changes suddenly.
• The S-5844A Series is more easily affected by disturbance or noise if the TEST pin is left open.
• Set a capacitor (CL) of about 0.1 μF for the DET pin to prevent malfunction caused by the noise when the power supply
is applied.
• The S-5844A Series may malfunction if the power supply voltage is lower than the minimum operation voltage.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by products, including
this IC, of patents owned by a third party.
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 13
Characteristics (Typical Data)
1. Current consumption vs. Power supply voltage characteristics
1.0 2.0
I
DD
[μA]
0.5
0.4
0.3
0.2
0
0.1
0 3.0 4.0 5.0 6.0
V
DD
[V]
−40°C
+25°C
+125°C
+95°C
2. DET pin current "H" vs. Power supply voltage characteristics (CMOS output product only)
VDET = VDD − 0.25 V
1.0 2.0
I
DETH
[mA]
4
3
2
0
1
0 3.0 4.0 5.0 6.0
V
DD
[V]
−40°C
+25°C
+95°C
+125°C
3. DET pin current "L" vs. Power supply voltage characteristics
VDET = 0.25 V
1.0 2.0
I
DETL
[mA]
10
8
0
4
2
6
0 3.0 4.0 5.0 6.0
V
DD
[V]
−40°C
+25°C
+95°C
+125°C
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 14
4. Response against startup
4. 1 Detection temperature or lower (Ta ≤ +TD)
CL = 0 μF, Active "H"
t (20 ms / div.)
V
DD
(= 3.0 V)
DET
1 V / div.
GND
1 V / div.
GND
4. 2 Higher than the detection temperature (Ta > +TD)
CL = 0 μF, Active "H"
t (20 ms / div.)
V
DD
(= 3.0 V)
DET
1 V / div.
GND
1 V / div.
GND
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 15
Marking Specifications
1. SOT-23-5
(1) to (3): Product code (refer to Product name vs. Product code)
(4): Lot number
123
45
Top view
(1) (2) (3) (4)
Product name vs. Product code
Product Code
Product Name (1) (2) (3)
S-5844A50DB-M5T1U3 2 M 4
S-5844A55CB-M5T1U3 2 M F
S-5844A55CC-M5T1U3 2 O F
S-5844A55CD-M5T1U3 2 Q F
S-5844A55DB-M5T1U3 2 M X
S-5844A60CB-M5T1U3 2 M G
S-5844A60CC-M5T1U3 2 O G
S-5844A60CD-M5T1U3 2 Q G
S-5844A60DB-M5T1U3 2 M Y
S-5844A65CB-M5T1U3 2 M H
S-5844A65CC-M5T1U3 2 O H
S-5844A65CD-M5T1U3 2 Q H
S-5844A65DB-M5T1U3 2 M Z
S-5844A70CB-M5T1U3 2 M I
S-5844A70CC-M5T1U3 2 O I
S-5844A70CD-M5T1U3 2 Q I
S-5844A70DB-M5T1U3 2 M 3
S-5844A75CB-M5T1U3 2 M A
S-5844A75CC-M5T1U3 2 O A
Product Code
Product Name (1) (2) (3)
S-5844A75CD-M5T1U3 2 Q A
S-5844A75DB-M5T1U3 2 M R
S-5844A80CB-M5T1U3 2 M B
S-5844A80CC-M5T1U3 2 O B
S-5844A80CD-M5T1U3 2 Q B
S-5844A80DB-M5T1U3 2 M S
S-5844A85CB-M5T1U3 2 M C
S-5844A85CC-M5T1U3 2 O C
S-5844A85CD-M5T1U3 2 Q C
S-5844A85DB-M5T1U3 2 M T
S-5844A90CB-M5T1U3 2 M D
S-5844A90CC-M5T1U3 2 O D
S-5844A90CD-M5T1U3 2 Q D
S-5844A90DB-M5T1U3 2 M U
S-5844A95CB-M5T1U3 2 M E
S-5844A95CC-M5T1U3 2 O E
S-5844A95CD-M5T1U3 2 Q E
S-5844A95DB-M5T1U3 2 M V
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5844A Series Rev.2.3_00
Seiko Instruments Inc. 16
2. SNT-4A
(1) to (3): Product code (refer to Product name vs. Product code)
1
2
4
3
Top view
(1) (2) (3)
Product name vs. Product code
Product Code
Product Name (1) (2) (3)
S-5844A50DB-I4T1U3 2 M 4
S-5844A55CB-I4T1U3 2 M F
S-5844A55CC-I4T1U3 2 O F
S-5844A55CD-I4T1U3 2 Q F
S-5844A55DB-I4T1U3 2 M X
S-5844A60CB-I4T1U3 2 M G
S-5844A60CC-I4T1U3 2 O G
S-5844A60CD-I4T1U3 2 Q G
S-5844A60DB-I4T1U3 2 M Y
S-5844A65CB-I4T1U3 2 M H
S-5844A65CC-I4T1U3 2 O H
S-5844A65CD-I4T1U3 2 Q H
S-5844A65DB-I4T1U3 2 M Z
S-5844A70CB-I4T1U3 2 M I
S-5844A70CC-I4T1U3 2 O I
S-5844A70CD-I4T1U3 2 Q I
S-5844A70DB-I4T1U3 2 M 3
S-5844A75CB-I4T1U3 2 M A
S-5844A75CC-I4T1U3 2 O A
Product Code
Product Name (1) (2) (3)
S-5844A75CD-I4T1U3 2 Q A
S-5844A75DB-I4T1U3 2 M R
S-5844A80CB-I4T1U3 2 M B
S-5844A80CC-I4T1U3 2 O B
S-5844A80CD-I4T1U3 2 Q B
S-5844A80DB-I4T1U3 2 M S
S-5844A85CB-I4T1U3 2 M C
S-5844A85CC-I4T1U3 2 O C
S-5844A85CD-I4T1U3 2 Q C
S-5844A85DB-I4T1U3 2 M T
S-5844A90CB-I4T1U3 2 M D
S-5844A90CC-I4T1U3 2 O D
S-5844A90CD-I4T1U3 2 Q D
S-5844A90DB-I4T1U3 2 M U
S-5844A95CB-I4T1U3 2 M E
S-5844A95CC-I4T1U3 2 O E
S-5844A95CD-I4T1U3 2 Q E
S-5844A95DB-I4T1U3 2 M V
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.3_00 S-5844A Series
Seiko Instruments Inc. 17
3. HSNT-4 (1010)
(1) to (3): Product code (refer to Product name vs. Product code)
(4), (5): Lot number
12
3
4
Top view
(1) (2) (3)
(4) (5)
Product name vs. Product code
Product Code
Product Name (1) (2) (3)
S-5844A50DB-A4T2U3 2 M 4
S-5844A55CB-A4T2U3 2 M F
S-5844A55CC-A4T2U3 2 O F
S-5844A55CD-A4T2U3 2 Q F
S-5844A55DB-A4T2U3 2 M X
S-5844A60CB-A4T2U3 2 M G
S-5844A60CC-A4T2U3 2 O G
S-5844A60CD-A4T2U3 2 Q G
S-5844A60DB-A4T2U3 2 M Y
S-5844A65CB-A4T2U3 2 M H
S-5844A65CC-A4T2U3 2 O H
S-5844A65CD-A4T2U3 2 Q H
S-5844A65DB-A4T2U3 2 M Z
S-5844A70CB-A4T2U3 2 M I
S-5844A70CC-A4T2U3 2 O I
S-5844A70CD-A4T2U3 2 Q I
S-5844A70DB-A4T2U3 2 M 3
S-5844A75CB-A4T2U3 2 M A
S-5844A75CC-A4T2U3 2 O A
Product Code
Product Name (1) (2) (3)
S-5844A75CD-A4T2U3 2 Q A
S-5844A75DB-A4T2U3 2 M R
S-5844A80CB-A4T2U3 2 M B
S-5844A80CC-A4T2U3 2 O B
S-5844A80CD-A4T2U3 2 Q B
S-5844A80DB-A4T2U3 2 M S
S-5844A85CB-A4T2U3 2 M C
S-5844A85CC-A4T2U3 2 O C
S-5844A85CD-A4T2U3 2 Q C
S-5844A85DB-A4T2U3 2 M T
S-5844A90CB-A4T2U3 2 M D
S-5844A90CC-A4T2U3 2 O D
S-5844A90CD-A4T2U3 2 Q D
S-5844A90DB-A4T2U3 2 M U
S-5844A95CB-A4T2U3 2 M E
S-5844A95CC-A4T2U3 2 O E
S-5844A95CD-A4T2U3 2 Q E
S-5844A95DB-A4T2U3 2 M V
No.
TITLE
SCALE
UNIT
Seiko Instruments Inc.
2.9±0.2
1.9±0.2
0.95±0.1
0.4±0.1
0.16 +0.1
-0.06
123
4
5
No. MP005-A-P-SD-1.2
MP005-A-P-SD-1.2
SOT235-A-PKG Dimensions
mm
No.
TITLE
SCALE
UNIT
Seiko Instruments Inc.
ø1.5 +0.1
-0 2.0±0.05
ø1.0 +0.2
-0 4.0±0.1
1.4±0.2
0.25±0.1
3.2±0.2
123
45
No. MP005-A-C-SD-2.1
MP005-A-C-SD-2.1
SOT235-A-Carrier Tape
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
mm
No.
TITLE
SCALE
UNIT
Seiko Instruments Inc.
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY. 3,000
No. MP005-A-R-SD-1.1
MP005-A-R-SD-1.1
SOT235-A-Reel
Enlarged drawing in the central part
mm
1.2±0.04
0.65
0.2±0.05
0.48±0.02
0.08
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-4A-A-PKG Dimensions
PF004-A-P-SD-4.0
No. PF004-A-P-SD-4.0
+0.05
-0.02
12
3
4
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
PF004-A-C-SD-1.0
SNT-4A-A-Carrier Tape
Feed direction
4.0±0.1
2.0±0.05
4.0±0.1
ø1.5 +0.1
-0
ø0.5
1.45±0.1 0.65±0.05
0.25±0.05
1
2
34
5°
No. PF004-A-C-SD-1.0
+0.1
-0
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY. 5,000
No. PF004-A-R-SD-1.0
PF004-A-R-SD-1.0
Enlarged drawing in the central part
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-4A-A-Reel
No.
TITLE
SCALE
UNIT mm
SNT-4A-A-Land Recommendation
Seiko Instruments Inc.
PF004-A-L-SD-4.0
No. PF004-A-L-SD-4.0
0.3
0.35
0.52
1.16
0.52
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1. (0.25 mm min. / 0.30 mm typ.)
2. (1.10 mm ~ 1.20 mm)
1
2
0.03 mm
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package (1.10 mm to 1.20 mm).
1.
2.
※1. 䇋⊼ᛣ⛞Ⲭᓣⱘᆑᑺ(0.25 mm min. / 0.30 mm typ.)DŽ
※2. 䇋䇋࣓ᇕ㺙Ё䯈ᠽሩ⛞Ⲭᓣ (1.10 mm ~ 1.20 mm)DŽ
⊼ᛣ1. 䇋࣓㛖ൟᇕ㺙ⱘϟ䴶ࠋϱ㔥ǃ⛞䫵DŽ
2. ᇕ㺙ϟǃᏗ㒓Ϟⱘ䰏⛞㝰ᑺ (Ң⛞Ⲭᓣ㸼䴶䍋) 䇋ࠊ0.03 mmҹϟDŽ
3. 㝰ⱘᓔষሎᇌᓔষԡ㕂䇋Ϣ⛞Ⲭᓣᇍ唤DŽ
4. 䆺㒚ݙᆍ䇋খ䯙 "SNTᇕ㺙ⱘᑨ⫼ᣛ"DŽ
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
HSNT-4-B-PKG Dimensions
PL004-A-P-SD-1.0
No. PL004-A-P-SD-1.0
12
4
0.20±0.05
0.65
1.00±0.04
3
0.38±0.02
0.08+0.05
-0.02
The heatsink of back side has different electric
potential depending on the product.
Confirm specifications of each product.
Do not use it as the function of electrode.
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
PL004-A-C-SD-1.0
Feed direction
4.0±0.05
ø1.5
ø0.5
1.12±0.05 0.5±0.05
0.25±0.05
1
2
34
5°
No. PL004-A-C-SD-1.0
2.0±0.05
+0.1
-0
+0.1
-0
HSNT-4-B-Carrier Tape
2.0±0.05
QTY. 10,000
No. PL004-A-R-SD-1.0
PL004-A-R-SD-1.0
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
HSNT-4-B-Reel
11.4±1.0
9.0
ø13±0.2
(60°) (60°)
Enlarged drawing in the central part
+1.0
- 0.0
No.
TITLE
SCALE
UNIT mm
HSNT-4-B-Land Recommendation
Seiko Instruments Inc.
PL004-A-L-SD-1.0
No. PL004-A-L-SD-1.0
0.48±0.02
0.30±0.02
1.02±0.02
0.65±0.02
0.76±0.01
0.65±0.01
0.2
Land Pattern
Metal Mask Pattern
Caution It is recommended to solder the heatsink to a board
in order to ensure the heat radiation.
PKG
0.48±0.02
0.07
0.30±0.01
0.07
0.23±0.01
0.23±0.02
www.sii-ic.com
• The information described herein is subject to change without notice.
• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
• When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the appropriate governmental authority.
• Use of the information described herein for other purposes and/or reproduction or copying without the
express permission of Seiko Instruments Inc. is strictly prohibited.
• The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, vehicle equipment,
in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment, without prior
written permission of Seiko Instruments Inc.
• The products described herein are not designed to be radiation-proof.
• Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.
