Hsin Semiconductor Pvt Ltd offers Passivated Triac with Plastic Envelope. Hsin Semiconductor Pvt Ltd also manufactures Transistors, Linear Regulators, Fast Recovery Diodes, etc which can be widely used in many fields such as color televisions, audio sets, electric al toys, energy saving lamps, etc. The Passivated Triac with Plastic Envelope - BT 137 Series - is used in motor control, industrial and domestic lighting, heating and static switching. The Passivated Triac with Plastic Envelope is intended for use in applications requiring high bi-directional transient and blocking voltage capability and high thermal cycling performance.