LITTELFUSE
晶闸管, 600 V, 50 μA, 2.5 A, 4 A, TO-252AA, 3 引脚
晶闸管, 400 V, 50 μA, 2.5 A, 4 A, TO-252AA, 3 引脚
可控硅晶闸管, 510mA, 600V, TO-92