Is there a pin-compatible replacement for SMAJ14A?

Yes, parts like SMAJ15A and SMAJ16A share the same SMA (DO-214AC) package and pinout. However, they are not drop-in replacements due to different standoff voltages and peak current ratings, which requires engineering review.

What risks should I check before replacing SMAJ14A?

Key risks include: 1) A higher standoff voltage (e.g., 15V or 16V) may not adequately protect a 14V circuit. 2) A lower peak pulse current (Ipp) rating reduces surge survivability. 3) Ensure the replacement is unidirectional, not bidirectional.

SMAJ14A Alternatives, Datasheet & Cross Reference | BOURNS

Finding a replacement for the SMAJ14A TVS diode involves matching its 14V standoff voltage, 400W power rating, and SMA package. Alternatives exist but may require verifying changes in protection levels.

AI replacement insight

Electrical riskmedium

Candidates have different voltage and current ratings.

Package risklow

Several candidates match the SMA package.

Firmware risklow

TVS diodes are passive components and do not involve firmware.

Can it be replaced directly?

No direct drop-in replacement was found. All candidates with the correct package have different electrical parameters that require review.

Best replacement path

Consider SMAJ15A as a starting point, but review the impact of its 15V standoff voltage and lower 16.4A peak current.

Main risk

The main risk is reduced circuit protection from a higher standoff voltage or lower surge current capability.

Recommended alternatives

Form-fit alternate with different voltage and current ratings requiring review.

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Alternative comparison matrix

Feature / factor	SMAJ14A	SMAJ15A	SMAJ16A	Compatibility / risk
Package	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA) — Same package and pin count.; SMAJ16A: Same package and pin count.
Polarity Or Type	Unidirectional	Unidirectional	Unidirectional	Unidirectional — Polarity matches.; SMAJ16A: Polarity matches.
Voltage V	14.0V	15.0V	16.0V	15.0V / 16.0V — Higher standoff voltage provides less protection.; SMAJ16A: Higher standoff voltage provides less protection.
Current A	17.2A	16.4A	15.4A	16.4A / 15.4A — Lower peak pulse current rating.; SMAJ16A: Lower peak pulse current rating.
Power W	400.0W	400.0W	400.0W	400.0W — Power rating matches.; SMAJ16A: Power rating matches.

Application & sourcing insights

Questions & answers

The best alternative depends on circuit tolerance. The SMAJ15A is a close option in the same package, but has a slightly higher standoff voltage (15V vs 14V) and lower peak current rating (16.4A vs 17.2A). Always verify these differences against your design requirements.