元器件降额准则（参考件）元器件种类降额参数降额等级ⅠⅡⅢ集成电路模拟电路放大器电源电压0.700.800.80输入电压0.600.700.70输出电流0.700.800.80功率0.700.750.80最高结温（℃）8095105比较器电源电压0.700.800.80输入电压0.700.800.80输出电流0.700.800.80功率0.700.750.80最高结温（℃）8095105电压调整器电源电压0.700.800.80输入电压0.700.800.80输出输入电压差0.700.800.85输出电流0.700.750.80功率0.700.750.80最高结温（℃）8095105模拟开关电源电压0.700.800.85输入电压0.800.850.90输出电流0.750.800.85功率0.700.750.80最高结温（℃）8095105数字电路双极型电路频率0.800.900.90输出电流0.800.900.90最高结温（℃）85100115MOS型电路电源电压0.700.800.80输出电流0.800.900.90功率0.800.800.90最高结温（℃）85100115混和集成电路厚模集成电路（W/cm2）7.5薄模集成电路（W/cm2）6.5最高结温（℃）85100115大规模集成电路最高结温（℃）改进散热方式降低结温分离半导体器件晶体管方向电压一般晶体管0.600.700.80功率MOSFET的栅源电压0.500.600.70电流0.600.700.80功率0.500.650.75功率管安全工作区集电极－发射极电压0.700.800.90集电极最大允许电流0.600.700.80最高结温200115140160Tjm（℃）175100125145≤150Tjm-65Tjm-40Tjm-20微波晶体管最高结温同晶体管二极管（基准管除外）电压（不适用于稳压管）0.600.700.80电流0.500.650.80功率0.500.650.80最高结温Tjm（℃）200115140160175100125145≤150Tjm-65Tjm-40Tjm-20微波二极管最高结温同二极管基准二极管可控硅/半导体光电器件电压0.600.700.80电流0.500.650.80最高结温Tjm（℃）200115140160175100125145≤150Tjm-65Tjm-40Tjm-20固定电阻器合成型电阻器电压0.750.750.75功率0.500.600.70环境温度按元件负荷特性曲线降额薄膜型电阻器电压0.750.750.75功率0.500.600.70环境温度按元件负荷特性曲线降额电阻网络电压0.750.750.75功率0.500.600.70环境温度按元件负荷特性曲线降额线绕电阻电压0.750.750.75功率精密型0.250.450.60功率型0.500.600.70环境温度按元件负荷特性曲线降额电位器非线绕电位器电压0.750.750.75功率合成、薄膜微调0.300.450.60精密塑料型不采用0.500.50环境温度按元件负荷特性曲线降额线绕电位器电压0.750.750.75功率普通型0.300.450.50非密封功率型－－0.70微调线绕型0.300.450.50环境温度按元件负荷特性曲线降额热敏电阻器功率0.500.500.50最高环境温度（℃）TAM-15TAM-15TAM-15电容固定玻璃釉型直流工作电压0.500.600.70器最高额定环境温度TAM（℃）TAM-10TAM-10TAM-10固定云母型直流工作电压0.500.600.70最高额定环境温度TAM（℃）TAM-10TAM-10TAM-10固定陶瓷型直流工作电压0.500.600.70最高额定环境温度TAM（℃）TAM-10TAM-10TAM-10固定纸/塑料薄膜直流工作电压0.500.600.70最高额定环境温度TAM（℃）TAM-10TAM-10TAM-10电解电容器铝电解直流工作电压－－0.75最高额定环境温度TAM（℃）－－TAM-20钽电解直流工作电压0.500.600.70最高额定环境温度TAM（℃）TAM-20TAM-20TAM-20微调电容器直流工作电压0.30~0.400.500.50最高额定环境温度TAM（℃）TAM-10TAM-10TAM-10电感元件热点温度THS（℃）(简写T)T-40~25T-25~10T-15~0工作电流0.60~0.700.60~0.700.60~0.70瞬间电压/电流0.90.90.9介质耐压0.5~0.60.5~0.60.5~0.6扼流圈工作电压0.70.70.7继电器连续触点电流小功率负荷（＜100mW）不降额电阻负载0.500.750.90电容负载（最大浪涌电流）0.500.750.90电感负载电感额定电流的0.500.750.90电阻额定电流的0.350.400.75电机负载电机额定电流的0.500.750.90电阻额定电流的0.150.200.35灯丝负载灯泡额定电流的0.500.750.90电阻额定电流的0.07~0.080.100.30触点功率（用于舌簧水银式）0.400.500.70线圈吸合电压最小维持电压0.900.900.90最小线圈电压1.101.101.10线圈释放电压最大允许值1.101.101.10最小允许值0.900.900.90最高额定环境温度TAM（℃）TAM-20TAM-20TAM-20振动极限0.600.600.60工作寿命（循环次数）0.50开关连续触点电流小功率负荷（＜100mW）不降额电阻负载0.500.750.90电容负载（电阻额定...
