項(xiàng)目 | 檢驗(yàn)方法 | 性能要求 |
高溫暴露 | ℃,(250±8)h | ?R≤±(1%R+0.05Ω),無(wú)機(jī)械損傷 |
壽命 | ℃,UR,2000h,1.5h通電、0.5h斷電
|
低溫貯存 | (-65±2)℃,(24±4)h | ?R≤±(0.5%R+0.05Ω),無(wú)機(jī)械損傷 |
熱沖擊 | 施加PR至熱穩(wěn)定為止,去掉負(fù)荷(8-12)s內(nèi)放入- ℃低溫箱中,15min |
沖擊 | 1000m/s2,6ms,半正弦波 | ?R≤±(0.2%R+0.05Ω),無(wú)機(jī)械損傷 |
高頻振動(dòng) | (10~2000)Hz,0.75mm或200m/s2,12h |
引出端強(qiáng)度 | 0.5W:10N,1W:25N,2W:22.5N,3W~12W:45N,30s |
短時(shí)間過(guò)載 | 0.5W~3W:5PR,4W~12W:10PR,5s | ?R≤±(0.5%R+0.05Ω) |
可焊性 | (235±2)℃,(5~10)s,距電阻體本體約1.5mm | 浸錫面≥95% |
絕緣電阻 | 100VDC | RI≥1000MΩ |
電阻溫度特性(×10-6/K) | -55℃~275℃ | R>10Ω:≤±50,1Ω≤R≤10Ω:≤±100,R<1Ω:不考核 |
介質(zhì)耐電壓 | 0.5W:300VAC,1W~2W:500VAC,3W~12W:1000VAC | 無(wú)擊穿,飛弧現(xiàn)象,?R≤±(0.2%R+0.05Ω) |
耐濕 | a,負(fù)荷,85%PR,b,極化,100VDC | ?R≤±(0.5%R+0.05Ω),無(wú)機(jī)械損傷 |