SMCJ58A is a Transient Voltage Suppressor Diode designed for surge and ESD protection in portable communications, computing, and video equipment. This unidirectional device features a working peak reverse voltage of 58V with a breakdown voltage of 64.4V, housed in a compact SMC (DO-214AB) surface mount package. The device delivers peak pulse power dissipation of 1500 watts at 1 ms pulse width and peak forward surge current of 200 amps, with fast response times of less than 1.0 ns. Operating over a temperature range of -55°C to +150°C, the SMCJ58A provides reliable transient protection with steady-state power dissipation of 5.0 watts at 75°C. Its lead-free, RoHS-compliant construction and standard pick-and-place compatibility make it ideal for modern electronic designs requiring robust overvoltage protection.