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Diodes Incorporated SMAJ28A-13 — Circuit Protection

SMAJ28A-13 Diodes Inc TVS Zener, 28V, 400W, DO-214AC

MPNSMAJ28A-13
Obsolete

Diodes Incorporated SMAJ28A-13 unidirectional TVS Zener diode, 28V reverse standoff, 400W peak pulse power, DO-214AC SMA surface mount package.

Diodes Incorporated SMAJ28A-13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

SMAJ28A-13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown31.1V
Voltage - clamping (Max) @ ipp45.4V
Voltage - reverse standoff28V
Current - peak pulse (10/1000μs)8.8A
Power - peak pulse400W
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AC, SMA
Unidirectional channels1

Product details

Obsolete — last-time-buy sourcing

Diodes Incorporated lists the SMAJ28A-13 as Obsolete. For existing BOM lines, this part is available through independent surplus and broker channels; quantities and pricing are confirmed at RFQ, not held as standing inventory.

28V rail clamp — 400W peak pulse

That 400W peak pulse power rating means the device can absorb a single transient of that energy without failing — useful for clamping inductive kickback or ESD events on a 24V nominal bus where the steady-state rail stays under 28V.

DO-214AC SMA — surface-mount placement

Housed in the DO-214AC (SMA) package, a standard surface-mount footprint. The operating junction temperature range is -55°C to 150°C, covering industrial and automotive ambient conditions.

Frequently asked questions

What is the closest pin-compatible alternative to SMAJ28A-13?

No pin-compatible alternative is recorded in the manufacturer's documentation. The base product number is SMAJ28, and the package is the standard DO-214AC SMA footprint. Any functional replacement would need to match the 28V reverse standoff, unidirectional polarity, and 400W peak pulse rating in the same package — but no official cross-reference is published.

What compliance documentation does Diodes Incorporated provide for SMAJ28A-13?

No specific RoHS, REACH, UL, or IEC compliance statements are recorded in this listing. Standard Diodes Incorporated TVS diodes in the SMAJ series are typically RoHS-compliant and halogen-free, but the buyer should verify the specific manufacturing date code and lot at RFQ.