Automotive transient protection — now in surplus channel
The 1.5KE7.5CHE3/73 is a 1500W peak-pulse Zener TVS from Vishay's TransZorb® series, qualified to AEC-Q101 for automotive under-hood transient suppression. With a 6.05V reverse standoff and an 11.7V clamping ceiling at 128A (10/1000µs), it protects 5V and 3.3V rails from load-dump and inductive kickback in engine-bay ECUs, transmission controllers, and body modules.
Clamping window and pulse capability
Breakdown voltage starts at 6.75V minimum, so the TVS begins conducting before the protected rail exceeds its abs-max rating. The 11.7V clamp at 128A means a 24V truck battery transient is clipped well below the 40V rating of typical downstream DC-DC converters. The single bidirectional channel clamps both polarities symmetrically — useful on AC-coupled signal lines or power rails that see reverse-battery events. The 1500W rating holds for the standard 10/1000µs waveform; shorter pulses (8/20µs) allow higher peak current without exceeding the junction temperature limit. The DO-201AA axial package (1.5KE outline) solders into through-hole boards with a 0.050-inch lead spacing — confirm the hole diameter and lead bend radius against the assembly drawing.
Obsolete — sourcing through independent channels
Vishay has marked the 1.5KE7.5CHE3/73 as obsolete. For new designs, evaluate Vishay's current 1.5KE series (non-automotive) or the automotive-grade P6KE/SMCJ families, noting the different package and AEC-Q grade.