Customization: | Available |
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Installation Type: | Tee Type |
Sensing Type: | Resistive |
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Product name | Epoxy resin NTC Thermistor Sensor 20kohm 3950K 3% |
Resistance value | 5-20 KΩ | |
Lead wire insulation | PVC, PTFE, Silicon latex Fiberglass | |
Measuring Range | -20~105ºC/-40~150ºC/ | |
Beta value | ±3% | |
B value | 25/50=3950K |
Type | Specification | Yes/No |
Thermistor | Flake chip t0.5x0.75 terminal: Au | Yes |
Solder | lead free | Yes |
Lead wire | Heatproof PVC parallel wire (black) ∅1.1 core: 0.08mm2 soft copper wire or tin plated soft copper wire | Yes however, PVC (controlled materials) contains |
Coating | Polybutadiene resin | Yes |
Coating | Epoxy resin dipped>2 times | Yes |
Case | Phosphous Deoxidized copper case t0.3 | Yes |
Item | Particulars | Specifications |
Permissible Applied current | The max.current which can be applied to the thermistor for 2% resistance difference for self-heating at 25ºC in still air | 0.27 mA |
Surge Resistance | 10kV, 1.2X50 us 5 times. (between the sheath and the leads) |
no sparking |
Insulation Resistance | D.C. 500V megger. (between the sheath and the leads in water) |
min. 100MΩ |
Withstanding Voltage | A.C.1800V for a second or A.C>1500V for a minute (between the sheath and the leads in water cut off current 100mA (50 samples in a bundle) | No visible difference |
Item | Testing Methods | Specifications |
Heat Resistance Test | 100ºC (in air) 1000 hours | △R25≤ ±5% △B(25-50) ≤ ±2.5% |
Resistance Test | -20ºC (in air) 1000 hours | △R25≤±5% △B(25-50)≤±2.5% |
Humidity Resistance Test | 60ºC - 95% R.H. 1000 hours D.C. 5V 1.5 hours→ off 0.5 hours connected with resistance 5.1kΩ in series |
△R25≤±5% △B(25-50)≤±2.5% |
Heat shock test | -30ºC±5ºC 5minutes→ 90±5ºC 5minutes (in hot water) 10000 Cycle D.C. 5V 1.5 hours→off 0.5 hours |
△R25≤±5% △B(25-50)≤±2.5% |