Radial Leaded Resin Coated NTC Thermistor for Temperature Sensing
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.
- 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.
- 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.
Unit: mm
| AMWEI Part Number | Resistance @25C R25（ohm） |
Beta Value (K) |
|---|---|---|
| AMF52-102□3950 | R25: 1K ohm | B(25/50C): 3950k |
| AMF52-202□3470 | R25: 2K ohm | B(25/50C): 3470k |
| AMF52-202□3550 | R25: 2K ohm | B(25/50C):3550k |
| AMF52-202□3950 | R25: 2K ohm | B(25/50C):3950k |
| AMF52-2252□3935 | R25: 2252 ohm | B(25/50C):3935k |
| AMF52-2.78K□3950 | R25: 2.78K ohm | B(25/50C):3950k |
| AMF52-302□3977(B25/85) | R25:3K ohm | B(25/85C):3977k |
| AMF52-332□3950 | R25: 3.3K ohm | B(25/50C):3950k |
| AMF52-472□3950 | R25: 4.7K ohm | B(25/50C): 3950k |
| AMF52-502□3470 | R25: 5K ohm | B(25/50C): 3470k |
| AMF52-502□3950 | R25: 5K ohm | B(25/50C): 3950k |
| AMF52-682□3977(B25/85) | R25: 6.8K ohm | B(25/85C): 3977k |
| AMF52-682□4200 | R25: 6.8K ohm | B(25/50C): 4200k |
| AMF52-103□3380 | R25: 10K ohm | B(25/50C): 3380k |
| AMF52-103□3435(B25/85) | R25: 10K ohm | B(25/85C): 3435k |
| AMF52-103□3470 | R25: 10K ohm | B(25/50C):3470k |
| AMF52-103□3950 | R25: 10K ohm | B(25/50C): 3950k |
| AMF52-103□3977(B25/85) | R25: 10K ohm | (B25/85C): 3977k |
| AMF52-103□4100 | R25: 10K ohm | B(25/50C): 4100k |
| AMF52-153□3950 | R25: 15K ohm | B(25/50C): 3950k |
| AMF52-203□3950 | R25: 20K ohm | B(25/50C): 3950k |
| AMF52-233□4200 | R25: 23K ohm | B(25/50C): 4200k |
| AMF52-303□3950 | R25: 30K ohm | B(25/50C): 3950k |
| AMF52-40.27k□3979(B25/85) | R25: 40.27K ohm | B(25/85C): 3979k |
| AMF52-473□3950 | R25: 47K ohm | B(25/50C): 3950k |
| AMF52-503□3950 | R25: 50K ohm | B(25/50C): 3950k |
| AMF52-503□3990 | R25: 50K ohm | B(25/50C): 3990k |
| AMF52-503□4050 | R25: 50K ohm | B(25/50C): 4050k |
| AMF52-104□3950 | R25: 100K ohm | B(25/50C): 3950k |
| AMF52-104□3990 | R25:100K ohm | B(25/50C): 3990k |
| AMF52-104□4200 | R25:100K ohm | B(25/50C): 4200k |
| AMF52-154□4370(B25/85) | R25: 150K ohm | B(25/85C): 4370k |
| AMF52-105□4730 | R25:1000K ohm | B(25/50C): 4730k |
Notes：□ in the part number for filling in resistance tolerance,
optional for ±1%(F), ±2%(G), ±3%(H), or ±5%(J).
| 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 | ≤2% | No visible damage |
| Storage in dry heat | IEC 60068-2-2 | Storage at upper category temperature. Temperature: 100 oC Time: 1000hours | ≤2% | No visible damage |
| Storage in damp heat, steady state (Humidity test) | IEC 60068-2-3 | Temperature: 40oC, Humidity:90%-95% RH, Duration:1000 hours |
≤2% | 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 |
≤2% | No visible damage |
| 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, ΔR25/R25≤2% |
| 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, ΔR25/R25≤2% |
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