0.25 Watt SIP4 & DIP8 Single Output 0.25瓦特学校改善工程 SCR / Diode Discs up to 800V Phase Control Thyristors 0.25瓦特学校改善工程 Power semiconductors , High Power semiconductors (eupec) , SCR / Diode Discs , SCR Diode Discs up to 4500V Phase Control Thyristors SCR Diode Discs up to 1400V Fast Thyristors 0.25 Watt SIP4 & DIP8 Single Output