SMCJ45A is a Transient Voltage Suppressor Diode designed for surge and ESD protection in portable communications, computing, and video equipment applications. The device features a working peak reverse voltage of 45V with a breakdown voltage of 50V, housed in a compact SMC (DO-214AB) surface mount package. It delivers peak pulse power dissipation of 1500 watts at 1 ms pulse width and peak forward surge current of 200 amps, with steady-state power dissipation of 5.0 watts at 75°C. The diode operates across a temperature range of -55°C to +150°C and exhibits fast response times typical of transient voltage suppressor devices. This combination of high power handling, compact form factor, and fast response makes SMCJ45A ideal for protecting sensitive electronic circuits from transient overvoltage events in portable and computing applications.