1500W peak-pulse clamping in a DO-214AB SMC
The 1.5SMC7.5CA-E3/9AT: The 1.5SMC7.5CA-/9AT is a bidirectional Zener-based transient voltage suppressor — Vishay calls the series TransZorb — in the DO-214AB (SMCJ) package, rated 1500 W peak pulse power at 10/1000 µs waveform. That 1.5 kW rating is the absorption ceiling before the clamping characteristic shifts; it defines the surge energy budget the diode can survive without degradation in a protection loop. The bidirectional configuration means it clamps both polarities — the standoff voltage of 6.4 V typ and the 7.13 V minimum breakdown together set the protection window, and the clamping voltage of 11.3 V max at the rated peak pulse current of 133 A tells you what the downstream circuit sees when a surge arrives.
Junction temperature and mounting
Surface-mount, tape-and-reel packaging suits pick-and-place assembly; the supplier device package is listed as DO-214AB (SMCJ), the industry-standard footprint for this power class.