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Taiwan Semiconductor Corporation 1.5KE56AHB0G — Circuit Protection

1.5KE56AHB0G TVS Diode, 1.5kW, 77V Clamp, DO-201

MPN1.5KE56AHB0G
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Taiwan Semiconductor Corporation 1.5KE series automotive TVS diode, Zener type, 1.5kW peak pulse power, 77V clamp, DO-201AA axial, AEC-Q101 qualified.

$0.4993Ref. price · indicative, final on quote
Taiwan Semiconductor Corporation 1.5KE56AHB0G datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE56AHB0G specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown53.2V
Voltage - clamping (Max) @ ipp77V
Voltage - reverse standoff47.8V
Current - peak pulse (10/1000μs)20A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C ~ 175°C (TJ)
GradeAutomotive
PackageBulk
QualificationAEC-Q101
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

The 1.5KE56AHB0G is a 1500 W (1.5 kW) peak pulse power TVS diode from Taiwan Semiconductor's 1.5KE series, with a Zener-type breakdown.

AEC-Q101 automotive qualification

The 47.8 V reverse standoff voltage and 53.2 V minimum breakdown voltage give the designer a narrow window for the nominal rail: a 48 V bus sees no leakage at standoff, and the breakdown triggers before the rail exceeds the downstream rating.

Through-hole DO-201 package — board-fit reality

The DO-201AA (DO-27) axial-lead package is a through-hole footprint that suits point-to-point wiring, terminal blocks, or PCB mounting with a 0.375-inch lead spacing. The bulk packaging means parts are loose in a bag or tube — no reel, so hand-insertion or tube-fed auto-insertion is the assembly path.

Frequently asked questions

What does the 77 V clamping voltage mean for a 48 V automotive bus?

The 77 V clamp at 20 A peak pulse means a transient on a 48 V nominal rail will be clipped to 77 V, keeping the voltage below the typical 80–100 V abs-max of downstream DC-DC converters and linear regulators. The 47.8 V reverse standoff ensures no leakage at the 48 V operating point.