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Vishay General Semiconductor - Diodes Division 1.5SMC33AHM3_A/I — Circuit Protection

Vishay 1.5SMC33AHM3_A/I TVS, 1500W, 28.2V Standoff, AEC-Q101

MPN1.5SMC33AHM3_A/I
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Vishay General Semiconductor - Diodes Division, 1.5SMC TransZorb® series, Zener TVS diode, Automotive grade, AEC-Q101, 1500W peak pulse, 28.2V standoff, 45.7V clamping, DO-214AB SMC package.

$0.3331Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5SMC33AHM3_A/I datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC33AHM3_A/I specifications
ParameterValue
TypeZener
Series1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown31.4V
Voltage - clamping (Max) @ ipp45.7V
Voltage - reverse standoff28.2V
Current - peak pulse (10/1000μs)32.8A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C ~ 150°C (TJ)
GradeAutomotive
PackageTape & Reel (TR)
ApplicationsTelecom
QualificationAEC-Q101
CaseDO-214AB, SMC
Unidirectional channels1

Product details

28.2V rail protection with 1500W pulse capacity

The 1.5SMC33AHM3_A/I: The AEC-Q101 qualification and automotive grade designation mean this part has passed the reliability stress tests and temperature cycling required for under-hood and chassis-mounted electronics in passenger vehicles.

DO-214AB SMC footprint and board integration

The cathode band identifies the unidirectional channel; the large copper pad on the bottom side conducts heat into the PCB copper pour, which sets the effective thermal resistance for repetitive pulse trains. Packaged in Tape & Reel (TR) format, it suits automated pick-and-place assembly for high-volume production lines. The surface-mount package eliminates through-hole hand-soldering steps in automotive ECU and telecom line-card builds.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5SMC33AHM3_A/I in this Circuit Protection family?

Within the same 1.5SMC series, the non-automotive variant 1.5SMC33AHM3_A/I's base product number is 1.5SMC33. The standard 1.5SMC33A (without the 'HM3' suffix) shares the same DO-214AB package and identical breakdown/clamping voltages but lacks the AEC-Q101 automotive qualification. For automotive applications requiring the full temperature range and PPAP documentation, the HM3 suffix variant is the correct choice.