Is there a pin-compatible replacement for SMAJ60A?

SMAJ58A shares the same SMA package and pinout. However, its standoff voltage is slightly lower at 58V compared to the SMAJ60A's 60V, which requires careful review of your circuit's maximum operating voltage.

What risks should I check before replacing SMAJ60A?

Key risks include package mismatch (requiring PCB redesign), incorrect polarity (unidirectional vs. bidirectional), and different standoff voltage (Vrwm). A lower Vrwm may clamp prematurely, while a higher Vrwm may not provide adequate protection.

SMAJ60A Alternatives, Datasheet & Cross Reference | GOODWORK

The SMAJ60A is a 400W, 60V unidirectional TVS diode in an SMA package, designed for overvoltage protection. Finding a replacement involves matching its key electrical parameters and package footprint.

AI replacement insight

Electrical riskmedium

Standoff voltage differences require careful review.

Package riskhigh

Most electrically similar parts are in different packages.

Can it be replaced directly?

No direct, fully equivalent replacement was found. SMAJ58A is the closest in form-fit but has a lower standoff voltage. Other candidates require PCB layout changes.

Best replacement path

For drop-in, review SMAJ58A, noting the voltage difference. For new designs or redesigns, SMBJ60A or SMCJ60A are strong functional alternatives with better power handling.

Main risk

The main risks are physical package incompatibility and deviations in the critical standoff voltage parameter.

Recommended alternatives

Form-fit compatible with a slightly lower standoff voltage (58V); requires electrical review.

View details

Alternative comparison matrix

Feature / factor	SMAJ60A	SMAJ58A	SMBJ60A	SMCJ60A	Compatibility / risk
Voltage	60.0V	58.0V	60.0V	60.0V	58.0V / 60.0V — Lower standoff voltage may cause premature clamping.; SMBJ60A: Standoff voltage matches.; SMCJ60A: Standoff voltage matches.
Package	SMA (DO-214AC)	SMA (DO-214AC)	SMB (DO-214AA)	SMC (DO-214AB)	SMA (DO-214AC) / SMB (DO-214AA) / SMC (DO-214AB) — Package is form-fit compatible.; SMBJ60A: Different package, not a drop-in replacement.; SMCJ60A: Larger package, not a drop-in replacement.
Polarity Or Type	Unidirectional	Unidirectional	Unidirectional	Unidirectional	Unidirectional — Polarity matches.; SMBJ60A: Polarity matches.; SMCJ60A: Polarity matches.
Power	400.0W	400.0W	600.0W	1500.0W	400.0W / 600.0W / 1500.0W — Power rating matches.; SMBJ60A: Higher power rating.; SMCJ60A: Significantly higher power rating.

Application & sourcing insights

Questions & answers

There is no single 'best' alternative. Electrically similar parts like SMBJ60A offer higher power ratings but come in a different package (SMB) requiring board changes. SMAJ58A has the same package but a lower standoff voltage.