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Vishay General Semiconductor - Diodes Division 1.5SMC300AHM3_A/I — Circuit Protection

Vishay 1.5SMC300AHM3_A/I TVS, 1500W, AEC-Q101, DO-214AB

MPN1.5SMC300AHM3_A/I
Active

Vishay General Semiconductor - Diodes Division, TransZorb® series, Zener TVS diode, 1.5SMC300AHM3_A/I, 1500W peak pulse, 414V clamping, AEC-Q101, DO-214AB SMC.

Vishay General Semiconductor - Diodes Division 1.5SMC300AHM3_A/I datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC300AHM3_A/I specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, 1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown285V
Voltage - clamping (Max) @ ipp414V
Voltage - reverse standoff256V
Current - peak pulse (10/1000μs)3.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsAutomotive, Telecom
CaseDO-214AB, SMC
Unidirectional channels1

Product details

The 1.5SMC300AHM3_A/I is an active-production Zener TVS from Vishay's TransZorb series, qualified to AEC-Q101 for automotive stress grades.

Clamping voltage and trigger window for a 256 V rail

Breakdown occurs at 285 V minimum, and clamping is specified at 414 V maximum at the rated 3.6 A peak pulse current — that clamping ceiling keeps the downstream silicon within its avalanche rating during a surge event. For shorter transients (8/20 µs, common in ESD or lightning), the peak current capability increases significantly — the datasheet's peak-pulse-power derating curve on page 4 shows the multiplier.

The 1500 W pulse handles load-dump transients per ISO 7637-2 pulse 5a/5b without an external clamp. For telecom line-card protection, the DO-214AB package reflows alongside standard passives on a 260 °C peak profile (MSL per the Vishay tape-and-reel label).

Frequently asked questions

What is the closest pin-compatible alternative in the 1.5SMC family?

The 1.5SMC series shares the same DO-214AB package and 1500 W peak-pulse rating across all voltage variants. For a different standoff voltage, any 1.5SMCxxx part (e.g., 1.5SMC250A for a 214 V rail) drops into the same PCB land pattern.

What compliance documentation does Vishay provide for this part?

As an AEC-Q101-qualified device, Vishay supplies PPAP documentation, RoHS and REACH compliance declarations, and a PCN notification channel. The TransZorb series is UL recognized under file E54228. Contact the storefront for the specific certificate bundle at RFQ.