Four-channel TVS in a five-pin SOT-23 — what it protects and what it doesn't
The STMicroelectronics ESDA6V1SC5 is a Zener-based TRANSIL™ TVS diode array packing four unidirectional channels into a SOT-23-5 package. It's designed to clamp transients on general-purpose signal and low-voltage power rails, with a 5.25 V reverse standoff voltage and a minimum breakdown of 6.1 V.
400 W peak pulse — where the margin lives
The 400 W peak pulse power is the per-device rating, not per channel. The surge energy is distributed across the array.
SOT-23-5 footprint and the common-anode constraint
The ESDA6V1SC5 comes in a SOT-23-5 package.
The base product number ESDA6 covers the family; the SC5 suffix identifies this specific 4-channel variant.