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Vishay General Semiconductor - Diodes Division 1.5SMC43A-E3/9AT — Circuit Protection

Vishay 1.5SMC43A-E3/9AT TVS, 1.5kW, 36.8V Standoff, DO-214AB

MPN1.5SMC43A-E3/9AT
Active

Vishay General Semiconductor 1.5SMC, TransZorb® series, Zener TVS diode, 1.5SMC43A-/9AT, 1500W peak pulse power, 36.8V reverse standoff, 59.3V clamping, DO-214AB (SMC), Tape & Reel.

$0.2266Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5SMC43A-E3/9AT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC43A-E3/9AT specifications
ParameterValue
TypeZener
Series1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown40.9V
Voltage - clamping (Max) @ ipp59.3V
Voltage - reverse standoff36.8V
Current - peak pulse (10/1000μs)25.3A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Unidirectional channels1

Product details

Active production — BOM-fit for a 36.8 V rail

The 1.5SMC43A-E3/9AT: The single unidirectional channel means the cathode band must face the protected rail — reverse polarity installs the diode in forward conduction and defeats the protection.

Voltage thresholds that define the protection window

A 36 V rail with 10 % tolerance sits at 39.6 V — inside the breakdown window but below the clamping ceiling, so the diode starts conducting near the rail's upper tolerance and clamps the transient before it reaches 60 V.

Frequently asked questions

What compliance documentation does Vishay provide for 1.5SMC43A-/9AT?

The - suffix in the order code indicates Vishay's lead-free / RoHS-compliant termination finish. Full RoHS, REACH, and material declaration certificates are available from Vishay's documentation portal under the base product number 1.5SMC43.