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Vishay General Semiconductor - Diodes Division 1.5SMC400A-E3/9AT — Circuit Protection

1.5SMC400A-E3/9AT Vishay TVS, 1.5kW, DO-214AB

MPN1.5SMC400A-E3/9AT
Obsolete

Vishay General Semiconductor 1.5SMC, TransZorb® series Zener TVS diode, 1.5SMC400A-/9AT, 1500W peak pulse, 342V reverse standoff, 548V clamping, DO-214AB (SMC) package, Tape & Reel.

Vishay General Semiconductor - Diodes Division 1.5SMC400A-E3/9AT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC400A-E3/9AT specifications
ParameterValue
TypeZener
Series1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown380V
Voltage - clamping (Max) @ ipp548V
Voltage - reverse standoff342V
Current - peak pulse (10/1000μs)2.7A
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

Why the 342 V standoff matters for your rail

The 1.5SMC400A-E3/9AT: When a transient hits, the diode clamps at 548 V max (at 2.7 A peak pulse current), shunting the surge to ground.

Obsolete — what that means for your BOM

Vishay lists the 1.5SMC400A-/9AT as obsolete. For existing designs already qualified on this Vishay part number, the surplus and independent-distribution channel is the practical sourcing path. Availability and pricing are lot-specific and confirmed at RFQ — no blanket stock claim.

DO-214AB footprint — layout note

The part ships in a DO-214AB (SMC) package, also referred to as SMCJ in supplier device codes.

Frequently asked questions

What is the closest pin-compatible alternative to the 1.5SMC400A-/9AT?

A parametric replacement would need the same DO-214AB footprint, 342 V reverse standoff, and 1500 W peak pulse rating. The base product number 1.5SMC400 may help identify other variants in the same series, but pin-to-pin compatibility must be verified against the specific BOM position.