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Microchip Technology SMAJ26E3/TR13 — Circuit Protection

SMAJ26E3/TR13 Zener TVS Diode – 26V, 500W, DO-214AC

MPNSMAJ26E3/TR13
Active

Microchip Technology SMAJ26E3/TR13, Zener TVS diode, 26V reverse standoff, 500W peak pulse power, single unidirectional channel, DO-214AC (SMA) surface-mount package, Tape & Reel.

$0.1800Ref. price · indicative, final on quote
Microchip Technology SMAJ26E3/TR13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ26E3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown28.9V
Voltage - clamping (Max) @ ipp46.6V
Voltage - reverse standoff26V
Current - peak pulse (10/1000μs)10.7A
Power - peak pulse500W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AC, SMA
Unidirectional channels1

Product details

Its 26V reverse standoff voltage means it sits across the supply line without conducting during normal operation, only clamping when the line exceeds the 28.9V minimum breakdown threshold.

That means a 26V rail sees the TVS clamp at under 47V during a surge — well within the typical 60V absolute maximum of downstream 24V-to-5V regulators. The 28.9V minimum breakdown gives a ~2.9V guard band above the 26V standoff, so normal line ripple won't trigger false clamping.

Microchip lists the SMAJ26E3/TR13 as Active.

Package and reel format for the pick-and-place line

Supplied in Tape & Reel (TR), the DO-214AC (SMA) package is a standard JEDEC outline for surface-mount TVS diodes.

Frequently asked questions

Can SMAJ26E3/TR13 replace P4SMAJ26A?

Both are 26V unidirectional TVS diodes in the DO-214AC (SMA) package, so the footprint and electrical ratings are similar. The SMAJ26E3/TR13 is a Microchip part; the P4SMAJ26A is typically a Littelfuse or Vishay offering. Verify the clamping voltage and peak pulse current against your surge requirement before substituting — the datasheet values may differ slightly between manufacturers.