It clamps transients on a 13V nominal rail — the reverse standoff voltage is 13V — and the breakdown is guaranteed at 14.4V minimum. Peak pulse power is rated 500W under the 10/1000µs waveform, with a clamping voltage of 21.5V at the peak pulse current of 23.2A. That 500W rating is the headline number for surge sizing — derate it against the operating temperature and the number of expected transients. Single bidirectional channel means one device protects both polarities on a signal or power line — no need to pair two unidirectional parts back-to-back.
SMAJ13CAE3/TR13 TVS Diode – Microchip, 500W Bidirectional
MPNSMAJ13CAE3/TR13
Active
Microchip Technology SMAJ13CAE3/TR13, Zener TVS diode, bidirectional, 13V reverse standoff, 21.5V clamp, 500W peak pulse power, DO-214AC (SMA) surface-mount package, Tape & Reel.
$0.1800Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Zener |
| Mounting | Surface Mount |
| Voltage - breakdown | 14.4V |
| Voltage - clamping (Max) @ ipp | 21.5V |
| Voltage - reverse standoff | 13V |
| Current - peak pulse (10/1000μs) | 23.2A |
| Power - peak pulse | 500W |
| Power line protection | No |
| Operating temperature | -65°C~150°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | General Purpose |
| Case | DO-214AC, SMA |
| Bidirectional channels | 1 |
Product details
Frequently asked questions
Is SMAJ13CAE3/TR13 bidirectional?
Yes — it is a single bidirectional channel. It clamps transients of either polarity on the protected line, so one device replaces two unidirectional TVS diodes in back-to-back configuration.
What is the closest pin-compatible alternative?
Any SMAJ13CA (bidirectional, 13V standoff, 500W) in DO-214AC from a different brand — for example, Littelfuse or Vishay — is functionally equivalent. The footprint is standard SMA, so no board change is needed. Verify the breakdown voltage tolerance and clamping voltage match your protection budget.