Obsolete TVS — what the 1500 W rating means for the BOM line
The 1.5KE8.2CHE3/54: The 6.63 V reverse standoff voltage sits below the nominal battery rail, so it does not leak in normal operation.
AEC-Q101 and the deployment envelope
This part carries AEC-Q101 qualification — the automotive-grade stress and reliability screening for discrete semiconductors. The DO-201AA axial-lead package (DO-27 equivalent) is a through-hole form factor — the leads absorb thermal cycling stress better than surface-mount in high-vibration environments, and the body handles the 1500 W pulse without cracking the encapsulation.
Sourcing an obsolete part — the independent channel
Since Vishay has discontinued this order code, the supply channel is independent surplus and excess inventory. No official successor is listed — the functional replacement is a parametric match from the same TransZorb family or a different manufacturer's TVS with the same 6.63 V standoff and 1500 W rating. Each lot is traceable and verified against the original Vishay specifications — the breakdown voltage window (7.38 V min) and clamping voltage (12.5 V max) are the key pass-fail criteria for incoming inspection.