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Taiwan Semiconductor Corporation 1.5SMC39CAHR7G — Circuit Protection

1.5SMC39CAHR7G TVS Diode, 1500W, Bidirectional, DO-214AB

MPN1.5SMC39CAHR7G
Active

Taiwan Semiconductor 1.5SMC series bidirectional TVS diode, 1.5SMC39CAHR7G, 1500W peak pulse power, 33.3V reverse standoff, 53.9V clamping, DO-214AB (SMC) surface mount, AEC-Q101 qualified.

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

Specifications

1.5SMC39CAHR7G specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown37.1V
Voltage - clamping (Max) @ ipp53.9V
Voltage - reverse standoff33.3V
Current - peak pulse (10/1000μs)29A
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 bidirectional TVS in a DO-214AB package

The 1.5SMC39CAHR7G: AEC-Q101 qualification and an operating junction temperature range of -55°C to 150°C make this part suitable for under-hood and chassis-mounted automotive electronics where thermal cycling and surge events are routine.

Clamping voltage and breakdown margin

Minimum breakdown voltage is 37.1 V, with a maximum clamping voltage of 53.9 V at the rated 29 A pulse current. The 33.3 V standoff gives a 3.8 V margin above a typical 24 V automotive rail before the diode starts to conduct leakage current.

No pin-compatible second-source is listed by the manufacturer, but the DO-214AB footprint is shared by many TVS diodes with similar ratings — parametric substitution is possible with a board-level surge review.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5SMC39CAHR7G?

No official second-source or pin-compatible alternative is listed by the manufacturer. Any TVS diode in a DO-214AB package with similar standoff voltage (33 V) and bidirectional configuration could be a functional substitute, but the clamping voltage and peak pulse current ratings must be verified against the application's surge requirements.

What compliance documentation does Taiwan Semiconductor provide for 1.5SMC39CAHR7G?

The part carries AEC-Q101 automotive qualification. RoHS and REACH compliance are standard for this series; specific certificates or declaration documents are available upon request through the RFQ process.