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Microchip Technology SMCJ24E3/TR13 — Circuit Protection

SMCJ24E3/TR13 TVS Diode – 1500W, 24V, Unidirectional

MPNSMCJ24E3/TR13
Active

Microchip Technology SMCJ24E3/TR13 Zener TVS diode, 1500W peak pulse power, 24V reverse standoff, unidirectional, DO-214AB (SMC) surface-mount package.

$0.5550Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMCJ24E3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown26.7V
Voltage - clamping (Max) @ ipp43V
Voltage - reverse standoff24V
Current - peak pulse (10/1000μs)34.9A
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

Surge protection for 24V rails – 1500W in a DO-214AB

The SMCJ24E3/TR13 is a unidirectional Zener TVS diode from Microchip Technology, rated for 1500W peak pulse power at 10/1000µs. It clamps a 24V nominal rail at 43V max when hit with a 34.9A surge, making it a fit for protecting DC power inputs, industrial controls, and telecom equipment where a single transient can kill a downstream regulator.

Clamping window and breakdown margin

The reverse standoff voltage is 24V (typical), with a minimum breakdown of 26.7V. That 19V window between standoff and clamp gives a 24V rail enough headroom to ride through transients without the diode conducting during normal ripple.

Active lifecycle and package availability

The base product number is SMCJ24, with the suffix indicating the lead-free / RoHS-compliant finish.

Frequently asked questions

Is SMCJ24E3/TR13 unidirectional or bidirectional?

It is unidirectional with one channel. The cathode band on the DO-214AB package marks the polarity; connect the cathode to the protected rail and the anode to ground for proper clamping of positive transients.

What is the closest pin-compatible alternative to SMCJ24E3/TR13?

Any standard SMCJ24A (e.g., from Littelfuse, Vishay, or Bourns) in the same DO-214AB package is footprint- and function-compatible. The key difference is the suffix indicates Microchip's lead-free finish; verify the breakdown and clamping voltages match your design margin.