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Microchip Technology SMAJ7.5AE3/TR13 — Circuit Protection

SMAJ7.5AE3/TR13 TVS Diode – Microchip, 500W, 7.5V Standoff

MPNSMAJ7.5AE3/TR13
Active

Microchip Technology SMAJ7.5AE3/TR13, Zener TVS diode, 500W peak pulse power, 7.5V reverse standoff, unidirectional, surface mount DO-214AC (SMA), Tape & Reel packaging.

$0.1600Ref. price · indicative, final on quote
Microchip Technology SMAJ7.5AE3/TR13 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ7.5AE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown8.33V
Voltage - clamping (Max) @ ipp12.9V
Voltage - reverse standoff7.5V
Current - peak pulse (10/1000μs)38.8A
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

Transient protection for 7.5V rails

The SMAJ7.5AE3/TR13 is a unidirectional Zener TVS diode from Microchip Technology, designed to clamp transients on a 7.5V nominal rail.

The minimum breakdown voltage is 8.33V, which sits about 0.8V above the 7.5V standoff — that gap is the normal leakage region. The clamping voltage at 12.9V max defines the peak voltage the downstream circuitry must survive. For a 5V logic rail, this margin is generous; for a 12V rail, the 12.9V clamp may be tight, so verify the downstream device's absolute maximum rating.

Microchip lists the SMAJ7.5AE3/TR13 as Active. That means no last-time-buy window, no successor search needed.

The DO-214AC (SMA) package is a surface-mount footprint with a small copper pad area — the thermal resistance depends on the PCB copper pour, so for sustained high-energy pulses, a larger pad helps keep the junction temperature rise within limits.

Frequently asked questions

What is the difference between SMAJ7.5AE3/TR13 and SMAJ7.5A?

The SMAJ7.5A is the base part number without the /TR13 suffix. The suffix indicates a lead-free / RoHS-compliant finish, and TR13 specifies Tape & Reel packaging. The electrical specs — 7.5V standoff, 500W peak pulse, 12.9V clamp — are identical between the two. If your BOM calls for SMAJ7.5A, the /TR13 variant is a drop-in replacement as long as the package and reel format match your assembly process.

Is SMAJ7.5AE3/TR13 RoHS compliant?

The suffix in the order code indicates a lead-free, RoHS-compliant termination finish. The part is designed for general-purpose applications and meets the RoHS directive for lead content.