Obsolete 1500W bidirectional TVS — sourcing reality
The 1.5KE7V5CA-B: The bidirectional single-channel design protects signal or power lines from both positive and negative overvoltage events.
DO-201 axial package — board-fit note
Housed in the DO-201AA (DO-27) axial-lead package, the device mounts through-hole. The junction temperature range spans -55°C to 175°C, covering industrial and automotive underhood thermal profiles where the ambient sees sustained high heat. The base product number is 1.5KE7V5; the -B suffix indicates Bulk packaging. No power line protection feature is implemented — this is a pure transient suppressor, not a crowbar or foldback device.
Clamping voltage and breakdown margin
Minimum breakdown voltage is 7.13V, giving a 0.73V guard band above the 6.4V standoff. The 11.3V clamp at 132A Ipp means a 5V or 3.3V rail sees the clamp voltage directly — a downstream regulator or load must survive the full clamp transient, not just the standoff level.