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Vishay General Semiconductor - Diodes Division 1.5SMC220CAHM3/H — Circuit Protection

1.5SMC220CAHM3/H Vishay TVS, 1500W, DO-214AB, AEC-Q101

MPN1.5SMC220CAHM3/H
Active

Vishay General Semiconductor, Automotive AEC-Q101 1.5SMC TransZorb series, Zener TVS diode, 1500W peak pulse, 185V standoff, 328V clamp, DO-214AB SMC package, bidirectional, Tape & Reel.

Vishay General Semiconductor - Diodes Division 1.5SMC220CAHM3/H datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC220CAHM3/H specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, 1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown209V
Voltage - clamping (Max) @ ipp328V
Voltage - reverse standoff185V
Current - peak pulse (10/1000μs)4.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsAutomotive, Telecom
CaseDO-214AB, SMC
Bidirectional channels1

Product details

The 1.5SMC220CAHM3/H: The 185 V reverse standoff voltage and 328 V clamping ceiling mean it protects 185 V nominal rails from transients up to 4.6 A peak pulse current without exceeding the clamping limit.

Clamping voltage and pulse current — what they mean for the rail

For a 185 V nominal bus, the 143 V margin between standoff and clamp gives headroom for load-dump and inductive kickback without the TVS conducting during normal ripple. The 209 V minimum breakdown voltage ensures the device starts clamping before the rail exceeds the downstream component's absolute maximum rating — a key parameter for selecting the TVS against the protected IC's V(BR) spec.

Listed as Active by Vishay.

Frequently asked questions

What package does 1.5SMC220CAHM3/H come in?

DO-214AB (SMC) surface-mount package. The SMC body handles the 1500 W pulse without cracking the epoxy, and the gull-wing leads provide a solder-joint inspection window.