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Diodes Incorporated SMAJ12CA-13 — Circuit Protection

SMAJ12CA-13 TVS Diode, Diodes Inc, 400W, 12V Standoff, SMA

MPNSMAJ12CA-13
End of Life

Diodes Incorporated SMAJ12CA-13 bidirectional TVS diode, DO-214AC (SMA) surface mount, 400W peak pulse power, 12V reverse standoff, 19.9V clamping voltage.

$0.4700Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ12CA-13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown13.3V
Voltage - clamping (Max) @ ipp19.9V
Voltage - reverse standoff12V
Current - peak pulse (10/1000μs)20.1A
Power - peak pulse400W
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AC, SMA
Bidirectional channels1

Product details

400W peak pulse, 12V standoff — clamping at 19.9V

The SMAJ12CA-13: The 12V reverse standoff voltage means it stays transparent on a 12V rail until a transient pushes the line above 13.3V breakdown, at which point it clamps at 19.9V max while shunting 20.1A peak current.

DO-214AC SMA package — board-fit for reflow

Housed in the DO-214AC (SMA) package with a surface-mount footprint. The supplier device package is SMA — standard for this power class. The junction temperature range spans -55°C to 150°C, so it handles industrial ambient conditions without derating concerns on a typical 85°C PCB.

Lifecycle status is Active per Diodes Incorporated. No NRND or EOL flags. The base product number SMAJ12 covers the family; the -13 suffix indicates tape-and-reel packaging. Cut Tape (CT) option also listed for prototype or low-volume builds.

Frequently asked questions

How can I order SMAJ12CA-13 or check availability?

SMAJ12CA-13 is an active part from Diodes Incorporated. We source it through authorized and independent distribution; current pricing and lead time are confirmed at RFQ. Submit a quote request with your target quantity and date-code preference.

What does the 400W peak pulse rating mean in practice?

The 400W rating is the peak pulse power dissipation for a 10/1000 µs waveform. For a 12V rail, the diode clamps at 19.9V and shunts 20.1A — enough to suppress transients from inductive loads or hot-swap events without exceeding the junction temperature limit.