The Vishay General Semiconductor - Diodes Division SM15T33CAHE3/57T is a Zener type diode that is designed for use in a variety of automotive applications. With a high power peak pulse of 1500W, this diode is designed to provide reliable protection against voltage surges and spikes. It has a Win Source Part Number of 1298231 and is part of the Circuit Protection>TVS - Diodes category. It is a bidirectional channel diode with a voltage reverse standoff of 28.2V and a voltage breakdown of 31.4V. It is manufactured by Vishay General Semiconductor - Diodes Division and has a package/case of DO-214AB (SMC).