Chip NTC Thermistor
Revision August 19, 2020
1 / 6
@ SOCAY Electronics Corp., Ltd. 2020
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SN0402-X Series
SOCAY Electronics Corp., Ltd. www.socay.com
Type
L
W
T
Dimensions
1.0±0.15
0.50±0.15
0.50±0.15
(1) (2) (3) (4) (5) (6) (7) (8)
(1) SN: Socay Chip NTC Thermistor.
(2) 0402: External Dimensions (L x W x T): 1.00mm x 0.50mm x 0.50mm.
(3) X：Internal Code
(4) 103: Nominal Zero-Power Resistance at 25℃: 222 = 2.2kΩ; 103 = 10kΩ; 474 = 470kΩ.
(5) F: Tolerance of Resistance: F: ±1%; H: ±3%; J: ±5%.
(6) 3435: B Constant: 3435 = 3435K; 3950 = 3950K; 4250 = 4250K.
(7) F: Tolerance of B Constant: F: ±1%.
(8) A: B Constant Calculation Method: A: 25℃ & 85℃; B: 25℃ & 50℃.
Part Number Code
Shape and Dimensions Unit: (mm)
SN 0402 X 103 F 3435 F A
Chip NTC Thermistor
Revision August 19, 2020
2 / 6
@ SOCAY Electronics Corp., Ltd. 2020
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SN0402-X Series
SOCAY Electronics Corp., Ltd. www.socay.com
1) F Series
Part Number
Resistance
(25℃)
(kΩ)
B
Constant
(25/50℃)
(K)
B
Constant
(25/85℃)
(K)
Dissipation
Factor
(mW/℃)
Thermal
Time
Constant
(s)
Rated Electric
Power (25℃)
(mW)
Operating
Ambient
Temperature
(℃)
SN0402X103F3435FA
10±1%
--
3435±1%
1
3
100
-40 ~ +125
SN0402X103F3450FB
10±1%
3450±1%
--
1
3
100
-40 ~ +125
SN0402X103F3950FB
10±1%
3950±1%
--
1
3
100
-40 ~ +125
SN0402X223F3950FB
22±1%
3950±1%
--
1
3
100
-40 ~ +125
SN0402X333F4050FB
33±1%
4050±1%
--
1
3
100
-40 ~ +125
SN0402X473F4050FB
47±1%
4050±1%
--
1
3
100
-40 ~ +125
SN0402X683F4150FB
68±1%
4150±1%
--
1
3
100
-40 ~ +125
SN0402X104F3950FB
100±1%
3950±1%
--
1
3
100
-40 ~ +125
SN0402X104F4250FB
100±1%
4250±1%
--
1
3
100
-40 ~ +125
SN0402X474F4050FA
470±1%
--
4050±1%
1
3
100
-40 ~ +125
2) H Series
Part Number
Resistance
(25℃)
(kΩ)
B
Constant
(25/50℃)
(K)
B
Constant
(25/85℃)
(K)
Dissipation
Factor
(mW/℃)
Thermal
Time
Constant
(s)
Rated Electric
Power (25℃)
(mW)
Operating
Ambient
Temperature
(℃)
SN0402X103H3435FA
10±3%
--
3435±1%
1
3
100
-40 ~ +125
SN0402X103H3450FB
10±3%
3450±1%
--
1
3
100
-40 ~ +125
SN0402X103H3950FB
10±3%
3950±1%
--
1
3
100
-40 ~ +125
SN0402X223H3950FB
22±3%
3950±1%
--
1
3
100
-40 ~ +125
SN0402X333H4050FB
33±3%
4050±1%
--
1
3
100
-40 ~ +125
SN0402X473H4050FB
47±3%
4050±1%
--
1
3
100
-40 ~ +125
SN0402X683H4150FB
68±3%
4150±1%
--
1
3
100
-40 ~ +125
SN0402X104H3950FB
100±3%
3950±1%
--
1
3
100
-40 ~ +125
SN0402X104H4250FB
100±3%
4250±1%
--
1
3
100
-40 ~ +125
SN0402X474H4050FA
470±3%
--
4050±1%
1
3
100
-40 ~ +125
Electrical Characteristics