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Taiwan Semiconductor Corporation 1.5SMC43CAHR7G — Circuit Protection

1.5SMC43CAHR7G TVS Diode, 1500W, Bidirectional, AEC-Q101

MPN1.5SMC43CAHR7G
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Taiwan Semiconductor 1.5SMC series bidirectional Zener TVS diode, 1.5SMC43CAHR7G, 1500W peak pulse power, 36.8V standoff, DO-214AB (SMC) surface mount, AEC-Q101 qualified, Tape & Reel.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC43CAHR7G specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown40.9V
Voltage - clamping (Max) @ ipp59.3V
Voltage - reverse standoff36.8V
Current - peak pulse (10/1000μs)26A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C ~ 150°C (TJ)
GradeAutomotive
PackageTape & Reel (TR)
QualificationAEC-Q101
CaseDO-214AB, SMC
Bidirectional channels1

Product details

Automotive-grade transient suppression — PPAP-ready

The 1.5SMC43CAHR7G: Its AEC-Q101 qualification means it ships with the PPAP documentation and traceability an automotive OEM auditor expects — not a 'capable' part, a qualified one. With a 36.8V reverse standoff voltage and a 59.3V clamping ceiling at 26A peak pulse current, this diode protects 36V nominal rails — common in 24V truck systems and 36V battery packs — from load-dump and inductive kickback transients. The bidirectional channel means polarity is irrelevant: one device covers both surge directions.

Frequently asked questions

Does 1.5SMC43CAHR7G require polarity attention on the PCB?

No — it is a bidirectional Zener TVS with a single channel. Either terminal can connect to the protected rail and the other to ground; the clamping action is symmetric. This simplifies layout in AC-coupled or reverse-polarity-prone applications.