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Microchip Technology SMAJ15CAE3/TR13 — Circuit Protection

SMAJ15CAE3/TR13 TVS Diode – 500W, 15V, DO-214AC

MPNSMAJ15CAE3/TR13
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Microchip Technology SMAJ15CAE3/TR13, Zener TVS diode, bidirectional, 500W peak pulse power, 15V reverse standoff voltage, DO-214AC (SMA) surface-mount package on tape and reel.

$0.3500Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ15CAE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown16.7V
Voltage - clamping (Max) @ ipp24.4V
Voltage - reverse standoff15V
Current - peak pulse (10/1000μs)20.6A
Power - peak pulse500W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AC, SMA
Bidirectional channels1

Product details

What this TVS protects and how it clamps

Its 500 W peak pulse power rating means it can absorb moderate surges typical of industrial sensor lines, relay coils, or DC power inputs without failing short. The reverse standoff voltage is 15 V, so it sits across the rail and conducts only when a transient exceeds the 16.7 V minimum breakdown threshold. Clamping is held to 24.4 V maximum at the 20.6 A peak pulse current — tight enough to keep a 24 V tolerant input stage alive.

Package and temperature range for the application

Housed in the standard DO-214AC (SMA) package, the device is surface-mount and suited for reflow assembly. No power line protection feature — this is a signal-rail or low-power bus clamp, not a mains surge suppressor.

Frequently asked questions

What is the peak pulse power of SMAJ15CAE3/TR13?

500 W peak pulse power per the 10/1000 µs waveform — enough for industrial transient protection on a 15 V rail.

What is the difference between SMAJ15CAE3/TR13 and SMAJ15A?

The SMAJ15A is typically a unidirectional version; the /TR13 suffix on this part indicates tape-and-reel packaging. The bidirectional channel count (1) means it clamps both polarities without external diode steering.

Can SMAJ15CAE3/TR13 protect a 15V supply rail?

Yes — the 15 V reverse standoff voltage matches a nominal 15 V rail. The 16.7 V minimum breakdown gives headroom above regulation tolerance, and clamping at 24.4 V keeps downstream 30 V-rated components safe.