JCT1255Z 55A TO-P3 SCRs JJM IN STOCK AVAILABLE AT BEST PRICE CONATCT NO. : 9611268169 High current density due to double mesa technology.JCT6055/1255/1655 series of silicon controlled rectifiers are specifically designed for high power switching and phase control applications.JCT6055/1255/1655 series are suitable for general purpose applications, a high gate sensitivity is required.JCT6055/1255i/1655i provides a 2500V RMS isolation voltage from all three terminals to extemal heetsink.