Skip to main content
Log in
Diodes Incorporated SMAJ18CA-13 — Circuit Protection

SMAJ18CA-13 Diodes Inc TVS Diode, 400W, 18V, SMA

MPNSMAJ18CA-13
Obsolete

Diodes Incorporated SMAJ18CA-13 bidirectional TVS diode, Zener type, 400W peak pulse power, 18V reverse standoff, DO-214AC SMA package.

$0.4300Ref. price · indicative, final on quote
Diodes Incorporated SMAJ18CA-13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

SMAJ18CA-13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown20V
Voltage - clamping (Max) @ ipp29.2V
Voltage - reverse standoff18V
Current - peak pulse (10/1000μs)13.7A
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

Obsolete status and sourcing path

The SMAJ18CA-13 is listed as Obsolete by Diodes Incorporated, meaning the manufacturer has ended production.

Protection ratings and clamping performance

The 18V reverse standoff voltage means the diode stays transparent on a nominal 18V rail, only conducting when the surge exceeds the 20V minimum breakdown threshold.

Housed in the DO-214AC (SMA) surface-mount package, the SMAJ18CA-13 shares the same footprint as other SMA-series TVS diodes — a straightforward drop-in for existing layouts using this industry-standard body. Available in Tape & Reel (TR) or Cut Tape (CT) packaging, which which exact ordering code the buyer selects determines the reel quantity and handling method for pick-and-place.

Frequently asked questions

What is the closest alternative to SMAJ18CA-13?

A functional replacement would require a different order code with the same SMA footprint and 18V standoff — confirm the clamping voltage and peak pulse rating match the circuit's surge requirements before substituting.