TransZorb® TVS for 9.4 V rail protection
The 1.5KE11-E3/54: Power line protection is not featured (no internal series element), so this part is a shunt-only clamp — the protected rail must be current-limited upstream or the TVS will fail short if the surge exceeds its peak pulse rating.
Sourcing an obsolete TransZorb®
The DO-201AA axial package is a common footprint across the 1.5KE series, so a functionally similar TVS from the same family with the same standoff voltage (9.4 V) and package may serve as a drop-in replacement, but no pin-compatible alternative is formally documented. Confirm the clamping voltage and peak pulse current match the BOM requirement before committing.
