What risks should I check before replacing SMAJ5.0A-13-F?

Key risks include package mismatch (e.g., SMB vs. SMA), changes in standoff voltage which affect the protection threshold, and lower peak pulse current ratings which could reduce surge survivability. Always verify datasheet parameters.

SMAJ5.0A-13-F Alternatives, Datasheet & Cross Reference | Diodes Incorporated

Q: Is there a pin-compatible replacement for SMAJ5.0A-13-F?

SMAJ6.0A is a pin-compatible alternative in the same SMA package, but it has a higher 6.0V standoff voltage and lower 38.8A current rating. These parametric differences must be reviewed for your specific circuit.

SMAJ5.0A-13-F is a popular 400W, 5.0V unidirectional TVS diode in an SMA package. This page reviews potential alternatives, considering electrical parameters and physical package compatibility.

AI replacement insight

Electrical riskmedium

Candidates have different voltage or current ratings.

Package riskhigh

Some alternatives require a different PCB footprint.

Can it be replaced directly?

No direct drop-in replacement with identical key parameters was found. SMAJ6.0A is the closest in form-factor but has relaxed electrical specifications.

Best replacement path

Use SMAJ6.0A if a higher 6.0V standoff voltage and lower 38.8A current rating are acceptable. Otherwise, a board redesign is needed for stronger parts like SMBJ5.0A-TR.

Main risk

The main risk is finding a part that is both package-compatible and meets the target's exact electrical protection levels (5.0V standoff, 43.5A peak current).

Recommended alternatives

An electrically superior alternative (600W, 68A) but requires a board redesign for its larger SMB package.

View details

Alternative comparison matrix

Feature / factor	SMAJ5.0A-13-F	SMBJ5.0A-TR	SMAJ6.0A	Compatibility / risk
Package	SMA (DO-214AC)	SMB (DO-214AA)	DO-214AC (SMA)	SMB (DO-214AA) / DO-214AC (SMA) — Larger package, not a drop-in replacement.; SMAJ6.0A: Same package family.
Voltage	5.0V	5.0V	6.0V	5.0V / 6.0V — Same standoff voltage.; SMAJ6.0A: Higher standoff voltage offers less protection.
Power	400W	600W	400W	600W / 400W — Higher power rating is an upgrade.; SMAJ6.0A: Same power rating.
Current	43.5A	68.0A	38.8A	68.0A / 38.8A — Higher peak current is an upgrade.; SMAJ6.0A: Lower peak pulse current rating.
Polarity Or Type	Unidirectional	-	Unidirectional	Unidirectional — Both are unidirectional.

Application & sourcing insights

Questions & answers

For applications that can tolerate a slightly higher standoff voltage (6.0V) and lower peak current (38.8A), SMAJ6.0A is a form-fit alternative. For new designs, SMBJ5.0A-TR offers superior electrical protection but in a larger SMB package.