9T94A型电子管为大功率金属陶瓷三管，采用π钍钨阴，嵌入式栅结构。工作25MHz,阳输出功率为170kW,主要用于工业高频加热加热装置。
特性参数
灯丝电压.................................................. 13V
灯丝电流...................................................330A
放大系数...................................................30
跨导......................................................70mA/V
间电容
阳栅电容..................................................114pF
阴栅电容..................................................79pF
阳阴电容..................................................3.6pF
安装方式.....................................轴向垂直，阳向下
冷却方式..................................................水冷
出口水温..............................................60℃
金属陶瓷封接处工作温度................................250℃
高度..................................................575mm
直径..................................................178mm
净重......................................................10kg
管座：强制空气冷却
小风量………………………………………………………………1m3/min
限运用值
阳直流电压..........................................14kV
栅直流电压..........................................-2000V
阳直流电流..........................................16A
栅直流电流..........................................-2.7A
阳耗散功率..............................................80kW
栅耗散功率..............................................2kW
典型工作状态
阳直流电压..............................................14kV
阳直流电流..............................................15.8A
栅直流电流..............................................2.35A
栅电流阻................................................600Ω
阳输出功率..............................................170kW