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Vishay General Semiconductor - Diodes Division 1.5SMC400AHE3_ALL — Circuit Protection

1.5SMC400AHE3_ALL Vishay TVS, AEC-Q101, 1500W, DO-214AB

MPN1.5SMC400AHE3_ALL
Active

Vishay General Semiconductor, 1.5SMC/TransZorb® series, automotive Zener TVS diode, 1500W peak pulse power, 342V reverse standoff, 548V clamping, AEC-Q101, DO-214AB SMC surface mount.

$1.2000Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5SMC400AHE3_ALL datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC400AHE3_ALL 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)
GradeAutomotive
PackageTape & Reel (TR)
QualificationAEC-Q101
CaseDO-214AB, SMC
Unidirectional channels1

Product details

Automotive-grade transient protection — AEC-Q101 is the gate

The 1.5SMC400AHE3_ALL: The 342V reverse standoff voltage sets the DC operating ceiling: the protected rail must never exceed 342V in steady state, or the diode begins conducting leakage current. Clamping at 548V maximum under peak pulse current limits the voltage seen by downstream components during a surge event.

380V breakdown, 548V clamp — the protection window

Breakdown occurs at a minimum of 380V, so the diode stays off below that threshold. The 548V maximum clamping voltage at 2.7A peak pulse current defines the worst-case voltage the load sees during a transient — critical for selecting downstream capacitor voltage ratings and MOSFET BVdss margins. The DO-214AB (SMC) package footprint mates with standard surface-mount pads and supports reflow soldering without special handling.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5SMC400AHE3_ALL in this family?

The base product number 1.5SMC400 covers the same voltage class. Pin-compatible siblings in the same DO-214AB package include the non-automotive 1.5SMC400A (without the HE3 suffix) and the bidirectional 1.5SMC400CA. The AEC-Q101 qualification on the HE3 variant is the deciding factor for automotive BOMs — the standard-grade parts lack the PPAP documentation an OEM auditor requires.

Where can I buy the 1.5SMC400AHE3_ALL and get a price?

Available to order through independent distribution. No stock-holding claim is made on this page.