The 1.5KE16CAE3/TR13: Its 13.6 V reverse standoff voltage and 22.5 V clamping at 67 A peak pulse current make it a fit for protecting 12 V DC rails in industrial control, telecom, or power-supply circuits against surge transients. The DO-201AA axial-lead package suits through-hole mounting on boards where a soldered-in TVS handles repetitive surge events without the creepage constraints of a surface-mount part.
Key ratings and what they mean on the bench
For a 12 V rail, a 67 A surge lasting 1 ms stays within the safe operating area. Breakdown voltage starts at 15.2 V minimum, so the diode begins conducting before the rail exceeds the downstream IC's abs-max rating. Clamping at 22.5 V max means the protected node sees no more than that during the pulse. Operating temperature spans -65°C to 150°C junction, covering outdoor enclosures and engine-bay environments where ambient heat and self-heating from repetitive surges add up.
Lifecycle reality — obsolete, but sourced
The part is available through independent surplus and broker channels; each lot is verified and quoted against an RFQ. For a repair bench or a BOM that already has this part in the layout, the axial DO-201 package and bidirectional polarity mean a direct drop-in replacement from the same series (same footprint, same voltage ratings) is the cleanest swap — confirm the standoff voltage matches the rail.