Radial Leaded Epoxy Resin Coated NTC Thermistor Temperature Sensor, 100K ohm, Beta B(25/50):3990K, Temperature -40C to +125C.

AMWEI Product Code: AMF52-104G3990

Appearance and Dimension

Radial Resin NTC Thermistor Temperature Sensor

Unit: mm

Radial  Leaded Epoxy Resin Coated  NTC Thermistor Application

Temperature sensing, control and compensation. E.g. inlet air temperature sensing thermistors or ECT in
automotive applications, sensor elements in industrial and commercial applications, heating systems and industrial
systems, medical equipment.

Radial Leaded Epoxy Resin Coated NTC Thermistor Electric Perfomance

  • Resistance at 25C R25: 100K ohm+/-2%
  • Beta Value B(25/50): 3990K+/-1%
  • Optional R25 resistance tolerance,  ±1%(F), ±2%(G), ±3%(H), or ±5%(J)
  • Dissipation Factor: δ≥3mW/℃.
  • Thermal Time Constant (in still air): ≤12 seconds.
  • Rated Powerwatt (below 25C): ≤50mW
  • Insulation resistance: room temperature, 500V, 60 Seconds, ≥100MΩ.
  • Operating temperature range: -40 to +125C.

NTC 100K Ohm 3990K Resistance vs. Temperature RT Data

(K Ohm)
(K Ohm)
(K Ohm)
-40C 3360.378 KΩ 20C 125.023 KΩ 80C 12.396 KΩ
-35C 2408.485 KΩ 25C 100.000 KΩ 85C 10.523 KΩ
-30C 1749.400 KΩ 30C 80.437 KΩ 90C 8.960 KΩ
-25C 1286.898 KΩ 35C 65.054 KΩ 95C 7.651 KΩ
-20C 957.943 KΩ 40C 52.892 KΩ 100C 6.553 KΩ
-15C 720.902 KΩ 45C 43.228 KΩ 105C 5.630 KΩ
-10C 547.966 KΩ 50C 35.511 KΩ 110C 4.853 KΩ
-5C 420.339 KΩ 55C 29.505 KΩ 115C 4.196 KΩ
0C 325.144 KΩ 60C 24.628 KΩ 120C 3.640 KΩ
5C 253.446 KΩ 65C 20.639 KΩ 125C 3.169 KΩ
10C 198.965 KΩ 70C 17.358 KΩ
15C 157.230 KΩ 75C 14.646 KΩ

Radial Leaded, Epoxy Resin Coated NTC Thermistor Mechanical Test

Test Standard Test Conditions and methods Requirements
Soldering & Solderability IEC60068-2-20
Test Ta
Temperature: 230±5 ℃,
2-2.5mm away from ceramic body
On: 2±0.5 Seconds.
The terminations shall be evenly tinned
Resistant to soldering heat IEC60068-2-20
Test Tb
Temperature: 260±5℃,
2-2.5mm away from ceramic body
On:10±1 Seconds.
No visible damage,
Lead wire tensile IEC60068-2-21
Test U
Test Ua: Force 10N, On 10 Seconds;
Test Ub: Bending 90C, Force 5N, Twice.
No break off,

Radial Leaded Epoxy Resin Coated NTC Thermistor Reliability Data

Test Standard Test Conditions ΔR25/R25 (typical) Remarks
Low temperature storage IEC 60068-2-1 Storage at low category temperature. Temperature: -40 oC Time: 1000hours ≤3% No visible damage
Storage in dry heat IEC 60068-2-2 Storage at upper category temperature. Temperature: 100 oC Time: 1000hours ≤3% No visible damage
Storage in damp heat, steady state (Humidity test) IEC 60068-2-3 Temperature: 40oC,
Humidity:90%-95% RH,
Duration:1000 hours
≤3% No visible damage
Rapid temperature cycling IEC 60068-2-14 1. -40C/30 minutes
2. 30C/5minutes
3. 100C/30 minutes
4. 30C/5minutes.
Number of cycles: 5 Cycles
≤3% No visible damage

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