Radial Leaded Resin Coated NTC Thermistor for Temperature Sensing

What Is Radial Resin Bead NTC Thermistor Temperature Sensor ?

Radial Leaded Resin Coated NTC Thermistors

Radial Leaded Resin Coated NTC Thermistors

Radial Resin Bead NTC Thermistor Temperature Sensor is polycrystalline mixed oxide ceramics made semiconductor type NTC Thermistor chip soldered with radial metal wire, coated with epoxy resin bead, for temperature  measurement range -45C to +125C.

Widely applied in temperature sensing, measurement, detection, indicator, monitoring, gauging, control, calibration and compensation, etc, suitable for HVAC and white goods, automotive, battery pack application.

Radial Leaded Resin Coated NTC Thermistor Features

  • High measurement accuracy.
  • Tight tolerance on resistance and Beta value.
  • Fast response, small dimension.
  • Can operate in long time stability.
  • Nominal resistance @25C can be from R25 1kΩ–1000kΩ.
  • Typical resistance at 25C  R25 1k ohm, 2k ohm, 2252 ohm, 3k ohm, 4.7k ohm, 5k ohm, 6.8k ohm, 10k ohm, 15k ohm, 20k ohm, 30k ohm, 40k ohm, 47k ohm, 50k ohm, 100k ohm, 150k ohm, 1000k ohm, etc.
  • Dissipation factor: ≥3.0 mW/C in still air.
  • Thermal time constant: ≤12 seconds in still air.
  • Operating temperature range: -45C — +125C.

Radial Resin Bead  NTC Thermistor Application

  • In household electronics temperature measurement, detection and control: such as air conditioner, refrigerator, deep freezer, soybean milk machine, bread machine, drinking machine, etc.
  • Medical equipment and apparatus temperature sensing and measurement.
  • Temperature control instrument.
  • Electronic temperature humidity meter.
  • Automobile temperature measurement.
  • Electronic table calendar.
  • Battery pack and battery charger temperature measurement, compensation, control and protection.
Radial Resin NTC Thermistor Temperature Sensor

Unit: mm

AMWEI Radial Leaded Epoxy Resin Coated NTC Thermistor Data Sheet

AMWEI Part NumberResistance @25C
Beta Value
AMF52-102□3950R25: 1K ohmB(25/50C): 3950k
AMF52-202□3470R25: 2K ohmB(25/50C): 3470k
AMF52-202□3550R25: 2K ohmB(25/50C):3550k
AMF52-202□3950R25: 2K ohmB(25/50C):3950k
AMF52-2252□3935R25: 2252 ohmB(25/50C):3935k
AMF52-2.78K□3950R25: 2.78K ohmB(25/50C):3950k
AMF52-302□3977(B25/85)R25:3K ohmB(25/85C):3977k
AMF52-332□3950R25: 3.3K ohmB(25/50C):3950k
AMF52-472□3950R25: 4.7K ohmB(25/50C): 3950k
AMF52-502□3470R25: 5K ohmB(25/50C): 3470k
AMF52-502□3950R25: 5K ohmB(25/50C): 3950k
AMF52-682□3977(B25/85)R25: 6.8K ohmB(25/85C): 3977k
AMF52-682□4200R25: 6.8K ohmB(25/50C): 4200k
AMF52-103□3380R25: 10K ohmB(25/50C): 3380k
AMF52-103□3435(B25/85)R25: 10K ohmB(25/85C): 3435k
AMF52-103□3470R25: 10K ohmB(25/50C):3470k
AMF52-103□3950R25: 10K ohmB(25/50C): 3950k
AMF52-103□3977(B25/85)R25: 10K ohm(B25/85C): 3977k
AMF52-103□4100R25: 10K ohmB(25/50C): 4100k
AMF52-153□3950R25: 15K ohmB(25/50C): 3950k
AMF52-203□3950R25: 20K ohmB(25/50C): 3950k
AMF52-233□4200R25: 23K ohmB(25/50C): 4200k
AMF52-303□3950R25: 30K ohmB(25/50C): 3950k
AMF52-40.27k□3979(B25/85)R25: 40.27K ohmB(25/85C): 3979k
AMF52-473□3950R25: 47K ohmB(25/50C): 3950k
AMF52-503□3950R25: 50K ohmB(25/50C): 3950k
AMF52-503□3990R25: 50K ohmB(25/50C): 3990k
AMF52-503□4050R25: 50K ohmB(25/50C): 4050k
AMF52-104□3950R25: 100K ohmB(25/50C): 3950k
AMF52-104□3990R25:100K ohmB(25/50C): 3990k
AMF52-104□4200R25:100K ohmB(25/50C): 4200k
AMF52-154□4370(B25/85)R25: 150K ohmB(25/85C): 4370k
AMF52-105□4730R25:1000K ohmB(25/50C): 4730k

Notes:□ in the part number for filling in resistance tolerance, optional for ±1%(F), ±2%(G), ±3%(H), or ±5%(J).

Radial Leaded Epoxy Resin Coated NTC Thermistor Reliability Data

TestStandardTest ConditionsΔR25/R25 (typical)Remarks
Low temperature storageIEC 60068-2-1Storage at low category temperature. Temperature: -40 oC Time: 1000hours≤2%No visible damage
Storage in dry heatIEC 60068-2-2Storage at upper category temperature. Temperature: 100 oC Time: 1000hours≤2%No visible damage
Storage in damp heat, steady state (Humidity test)IEC 60068-2-3Temperature: 40oC,
Humidity:90%-95% RH,
Duration:1000 hours
≤2%No visible damage
Rapid temperature cyclingIEC 60068-2-141. -40C/30 minutes
2. 30C/5minutes
3. 100C/30 minutes
4. 30C/5minutes.
Number of cycles: 5 Cycles
≤2%No visible damage

Radial Leaded, Epoxy Resin Coated NTC Thermistor Mechanical Test

TestStandardTest Conditions and methodsRequirements
Soldering & SolderabilityIEC60068-2-20
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 heatIEC60068-2-20
Test Tb
Temperature: 260±5℃,
2-2.5mm away from ceramic body
On:10±1 Seconds.
No visible damage,
Lead wire tensileIEC60068-2-21
Test U
Test Ua: Force 10N, On 10 Seconds;
Test Ub: Bending 90C, Force 5N, Twice.
No break off,

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