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Vishay General Semiconductor - Diodes Division 1.5SMC540AHM3_A/I — Circuit Protection

Vishay 1.5SMC540AHM3_A/I Zener TVS, 459V Standoff, 1500W

MPN1.5SMC540AHM3_A/I
Active

Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101, 1.5SMC TransZorb® series, Zener TVS diode, 1.5SMC540AHM3_A/I, 459V standoff, 740V clamp, 1500W peak pulse, DO-214AB SMC, Tape & Reel.

Vishay General Semiconductor - Diodes Division 1.5SMC540AHM3_A/I datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC540AHM3_A/I specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, 1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown513V
Voltage - clamping (Max) @ ipp740V
Voltage - reverse standoff459V
Current - peak pulse (10/1000μs)2.03A
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

Clamp voltage and peak pulse envelope for 459V rails

The 1.5SMC540AHM3_A/I: The unidirectional channel (one channel) means the cathode must be connected to the protected rail for forward-bias clamping. The DO-214AB (SMC) surface-mount package delivers a low-inductance path to the PCB ground plane, critical for fast transient suppression.

Sourcing posture for active automotive-grade TVS

The product status is Active, meaning Vishay continues to manufacture this order code. For a BOM line protecting a 459V rail in an automotive ECU or telecom power supply, this part is a current-design-in candidate with no forced migration horizon.

Frequently asked questions

What is the 1.5SMC540AHM3_A/I's listed series?

The series is Automotive, AEC-Q101, 1.5SMC, TransZorb®. The AEC-Q101 qualification certifies this Zener TVS diode for automotive-grade reliability, including temperature cycling and PPAP-level screening.