What the 1500 W pulse rating means for the BOM line
The 1.5KE16CHE3/73: A 12 V automotive rail that sees load-dump transients sits within this window.
Obsolete status and the sourcing picture
The part is not available through the franchised channel for new builds. Available through independent surplus and excess inventory channels. Quantities are lot-specific; traceability and date codes are confirmed at RFQ. No pin-compatible direct replacement exists from Vishay — a parametric search for a 1500 W, 12.9 V standoff TVS in DO-201AA is the alternative path for a board spin.
Package and temperature envelope
DO-201AA (DO-27) axial-lead through-hole package — the leads are crimped into the board and the body stands off the PCB. The junction temperature range spans -55°C to 175°C, covering the full automotive ambient plus the self-heating margin from the pulse current. Single bidirectional channel — one device clamps both polarities, saving a diode count on the rail compared to back-to-back unidirectional parts.