The SMCJ43A-T13 is a 4.3A, 145V, uni-directional TVS diode designed to protect sensitive components from voltage transients. It has a 400W peak pulse power dissipation, a 8/20µs pulse with a 25A peak surge current, and a 9.4m? dynamic resistance at 10A. It has an operating junction temperature range of -55°C to 150°C, an operating standing wave rating (SWR) of 2.5, and is RoHS compliant.