Radial Leaded Epoxy Resin Coated NTC Thermistor Temperature Sensor, 47K ohm, Beta B(25/50):3950K, Temperature -40C to +125C.

AMWEI Product Code: AMF52-473G3950

Appearance and Dimension


Radial Resin NTC Thermistor Temperature Sensor

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: 47K 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 47K Ohm 3950K Resistance vs. Temperature RT Data

(K Ohm)
(K Ohm)
(K Ohm)
-40C 1575.431 KΩ 20C 58.203 KΩ 80C 5.823 KΩ
-35C 1132.553 KΩ 25C 47.000 KΩ 85C 4.952 KΩ
-30C 829.048 KΩ 30C 37.862 KΩ 90C 4.228 KΩ
-25C 614.425 KΩ 35C 30.677 KΩ 95C 3.624 KΩ
-20C 459.408 KΩ 40C 24.995 KΩ 100C 3.117 KΩ
-15C 345.896 KΩ 45C 20.477 KΩ 105C 2.690 KΩ
-10C 262.049 KΩ 50C 16.864 KΩ 110C 2.330 KΩ
-5C 199.771 KΩ 55C 13.960 KΩ 115C 2.024 KΩ
0C 153.338 KΩ 60C 11.613 KΩ 120C 1.765 KΩ
5C 118.616 KΩ 65C 9.707 KΩ 125C 1.543 KΩ
10C 92.576 KΩ 70C 8.151 KΩ
15C 72.988 KΩ 75C 6.874 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

Other Related AMWEI NTC thermistors Products for Temperature Sensing

Axial Glass NTC thermistor

Axial Glass NTC thermistor Temperature Sensor

Thermistors Temperature Sensor Probe Assemblies

Thermistors Temperature Sensor Probe Assemblies

NTC Thermistor SMD part

NTC Thermistor SMD part for Temperature Sensing Compensation

Content Headline 

Technical Knowledge

Applications Articles

Thermistors Application