正温度系数(PTC)热敏电阻合金丝
Positivc temperature coefficient (PTC) thermistor alloy wire
2015-07-14
YD/T 0741-1995
通信设备过电流保护用正温度系数（PTC)热敏电阻器技术条件
1995-04-01
YD/T 741-2002
通信设备过电流保护用正温度系数（PTC）热敏电阻器技术要求
Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations