| Solderability | Even tinning on wetted part, Tinning area 95% | After dipping the lead out end with flux, immerse it in a tin bath at 245 5 and a depth of 15mm, 6mm away from the NTC body's lower end, for 3 0.5 seconds. (Refer to IEC68-2-20 /GB2423.28 Test Ta) |
| Resistance To Soldering Heat | No visible damage, R/RN 20% (R =RN-RN') | According to IEC68-2-20 (GB2423.28) Test Tb. Using the welding groove method, dip the lead out end in flux and immerse in a tin groove at 260 5 and a depth of 15mm, 6mm away from the NTC body's lower end, for 10 1 second. Recover at 25 1 for 4-5 hours, then retest rated zero power resistance RN'. |
| Strength of lead terminal | No visible damage, R/RN 20% (R =RN-RN') | According to IEC68-2-21 (GB2423.29) Test U. Test Ua: 10N tensile force for 10 seconds; Test Ub: 90 bend, 10N tensile force for 10 seconds; 180 twist, 5N tensile force for 10 seconds. Recover at 25 1 for 4-5 hours, then retest rated zero power resistance RN'. |
| Temp. Cycling Testing | No visible damage, R/RN 20% (R =RN-RN') | Store for 30 minutes each at Ta=-402 and Tb=1502, cycle 5 times. Each cycle includes a 5-minute transition at 251. After testing, place at room temperature (251) for 4-5 hours before measuring zero power resistance RN'. |
| Electrical Cycling Testing | No visible damage, R/RN 20% (R =RN-RN') | Environmental temperature: 251. Cycle count: 1000 times, on/off: 5 s / 55 s, test current: 5.0A. After placing the sample at room temperature (251) for 4-5 hours, measure its zero power resistance RN'. |
| Load Life (Endurance) Testing | No visible damage, R/RN 20% (R =RN-RN') | Environmental temperature: 25 1 . Apply maximum working current of 5.0A for 1000 24 hours. After testing, place at room temperature (251) for 4-5 hours, then measure zero power resistance RN'. |
| Humidity Testing | No visible damage, R/RN 20% (R =RN-RN') | Place in an environment of 402 and 933% RH for 20024 hours. After taking out, place at room temperature (251) for 1-2 hours to measure zero power resistance RN'. |
| Insulation Withstand voltage | 700VDC, No breakdown or arcing during the test | Take the lead end of the thermistor as one electrode, wrap the other electrode around the thermistor body with metal foil. Apply 700VDC to both electrodes for 60 seconds. |
