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Microchip Technology SMAJ33CAE3/TR13 — Circuit Protection

SMAJ33CAE3/TR13 TVS Diode – 500W Bidirectional, DO-214AC

MPNSMAJ33CAE3/TR13
Active

Microchip Technology SMAJ33CAE3/TR13, Zener TVS diode, 500W peak pulse power, bidirectional, 33V reverse standoff, DO-214AC (SMA) surface-mount package.

$0.1800Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ33CAE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown36.7V
Voltage - clamping (Max) @ ipp53.3V
Voltage - reverse standoff33V
Current - peak pulse (10/1000μs)9.4A
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

Transient suppressor for 33V rails

It clamps transients to 53.3V maximum at the rated 9.4A peak pulse current, making it a direct fit for protecting 24V to 33V DC power buses, signal lines, or I/O ports in industrial and telecom equipment.

Bidirectional clamping in one package

A single SMAJ33CAE3/TR13 covers both positive and negative transients — the bidirectional channel eliminates the need for two series diodes or a bridge arrangement on AC-coupled or dual-polarity lines. The breakdown voltage starts at 36.7V minimum, so the device stays out of the circuit until a real surge arrives.

Active production, standard DO-214AC footprint

Tape & Reel and Cut Tape options are available for both prototyping and production reels.

The 500W peak pulse rating is specified at 25°C; at 125°C ambient the power capability derates to roughly 80% of the 25°C value — a margin to account for in high-temperature designs.

Frequently asked questions

Is SMAJ33CAE3/TR13 bidirectional or unidirectional?

It is a bidirectional device with one channel, clamping both positive and negative transients symmetrically. Use it on AC lines, bipolar supplies, or signal pairs where polarity is not fixed.

What is the peak pulse power of SMAJ33CAE3/TR13?

500W peak pulse power per the 10/1000µs waveform. The clamping voltage at that power is 53.3V maximum at 9.4A peak pulse current.

What package does SMAJ33CAE3/TR13 come in?

The footprint is standard across the SMAJ series.