Radial Leaded Epoxy Resin Coated NTC Thermistor  Temperature Sensor, 4.7K ohm, Beta B(25/50):3950K, Temperature -40C to +125C.

AMWEI Product Number: AMF52-472G3950

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: 4700 ohm+/-2%
  • Beta Value B(25/50): 3950K+/-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 4.7K Ohm 3950K Resistance vs. Temperature RT Data

(K Ohm)
(K Ohm)
(K Ohm)
-40C 139.4303 KΩ 20C 5.8680 KΩ 80C 0.5849 KΩ
-35C 102.5132 KΩ 25C 4.7000 KΩ 85C 0.4990 KΩ
-30C 76.7813 KΩ 30C 3.7943 KΩ 90C 0.4278 KΩ
-25C 58.1606 KΩ 35C 3.0757 KΩ 95C 0.3683 KΩ
-20C 44.3531 KΩ 40C 2.5046 KΩ 100C 0.3185 KΩ
-15C 33.9643 KΩ 45C 2.0499 KΩ 105C 0.2765 KΩ
-10C 26.0869 KΩ 50C 1.6865 KΩ 110C 0.2409 KΩ
-5C 20.0937 KΩ 55C 1.3950 KΩ 115C 0.2107 KΩ
0C 15.5300 KΩ 60C 1.1601 KΩ 120C 0.1849 KΩ
5C 12.0556 KΩ 65C 0.9700 KΩ 125C 0.1628 KΩ
10C 9.4117 KΩ 70C 0.8153 KΩ
15C 7.3998 KΩ 75C 0.6888 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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