A 4A 400V sensitive gate silicon controlled rectifier PNPN device designed for high volume consumer applications such as temperature, light, and speed control, process and remote control, and warning systems where reliability of operation is important. * Glassivated surface for reliability and uniformity * TO-126 plastic package * Practical level triggering and holding characteristics * Flat, rugged, thermopad construction for low thermal resistance, high heat dissipation and durability * Sensitive gate triggering Note: As a result of the Fairchild Semiconductor acquisition by ON Semiconductor, the ignition IGBT, TVS diode and switching thyristor product lines have been divested to Littelfuse Inc.