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Vishay General Semiconductor - Diodes Division 1.5KE16HE3/73 — Circuit Protection

1.5KE16HE3/73 Vishay TVS Zener, 1500W, DO-201AA

MPN1.5KE16HE3/73
Obsolete

Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb series, TVS Zener diode, 1.5KE16HE3/73, 1500W peak pulse, 12.9V standoff, 23.5V clamping, DO-201AA axial through-hole.

Vishay General Semiconductor - Diodes Division 1.5KE16HE3/73 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE16HE3/73 specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, TransZorb®
MountingThrough Hole
Voltage - breakdown14.4V
Voltage - clamping (Max) @ ipp23.5V
Voltage - reverse standoff12.9V
Current - peak pulse (10/1000μs)63.8A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Box (TB)
ApplicationsAutomotive
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

Obsolete TVS for automotive 12V rail protection

The 1.5KE16HE3/73: With a 12.9V reverse standoff voltage and 23.5V clamping at 63.8A (10/1000µs pulse), it is sized for 12V nominal system protection where the transient energy stays under the 1.5kW rating.

Clamping voltage and pulse current — the real protection envelope

The 23.5V maximum clamping voltage at 63.8A peak pulse current defines the voltage the downstream circuitry must survive. For a 12V battery line, a load-dump pulse that exceeds the 14.4V minimum breakdown triggers conduction; the diode clamps the transient to 23.5V, absorbing the energy as heat across the junction.

Sourcing an obsolete AEC-Q101 TVS

Vishay has marked the 1.5KE16HE3/73 as obsolete. The DO-201AA axial package is a standard footprint; a functional replacement from the same 1.5KE family would require verifying the breakdown and clamping voltages match the BOM requirement.