Automotive surge protection with traceable provenance
The 1.5KE6.8AHE3_A/D is a Vishay TransZorb® TVS diode from the Automotive series, carrying AEC-Q101 qualification — meaning it has passed the reliability stress and temperature cycling tests required for under-hood and chassis-mounted electronics.
Protection window and clamping behaviour
The reverse standoff voltage is 5.8 V, meaning the diode draws negligible leakage below that rail voltage. Breakdown occurs at a minimum of 6.45 V, and the maximum clamping voltage at the 143 A peak pulse current is 10.5 V — this 4.05 V window between standoff and clamp defines the margin a 5.8 V rail has before the protected IC sees overvoltage. Power line protection is marked 'No' — this is a signal/rail TVS, not a mains-rated suppressor. The single unidirectional channel clamps positive transients relative to ground; for negative-going surges a bidirectional variant from the same 1.5KE family would be needed. The DO-201AA axial body (1.5KE supplier device package) solders into a through-hole board; the lead bend and standoff height from the PCB should follow Vishay's application note for thermal fatigue life under vibration.
Sourcing and compliance posture
For automotive PPAP traceability, the AEC-Q101 certification is on file; the RoHS and REACH compliance declarations are available from Vishay's documentation portal per the base product number 1.5KE6.8. Sourced through independent distribution channels against an RFQ. The Tape & Box packaging is the standard Vishay format for this part — confirm the reel quantity and moisture sensitivity level (MSL) with the distributor before committing the BOM line.