Is there a pin-compatible replacement for P6SMB30A?

Yes, parts like SMBJ26A and SMBJ24A use the same DO-214AA (SMB) package and are pin-compatible. However, their electrical parameters differ, so they are not drop-in replacements without review.

What risks should I check before replacing P6SMB30A?

Key risks include: 1) Polarity: Ensure the replacement is unidirectional. 2) Standoff Voltage: A lower voltage may cause unwanted clamping. 3) Peak Current (Ipp): A lower rating reduces surge protection. 4) Clamping Voltage: Ensure it's low enough to protect downstream circuits.

P6SMB30A Alternatives, Datasheet & Cross Reference | BOURNS

Finding a replacement for the P6SMB30A TVS diode requires matching its 25.6V unidirectional protection in a DO-214AA package. Alternatives exist but may have slight parametric differences needing review.

AI replacement insight

Electrical riskmedium

Candidates have minor deviations in standoff voltage or peak current, requiring circuit-level review.

Package risklow

All viable candidates use the same DO-214AA (SMB) package, ensuring physical compatibility.

Can it be replaced directly?

No direct drop-in replacement has been identified; all candidates require review. SMBJ26A is the closest functional alternative.

Best replacement path

SMBJ26A is a strong candidate, offering a similar profile but with a slightly lower current rating that needs verification.

Main risk

The main risks are a lower standoff voltage (e.g., SMBJ24A) causing false triggering, or a lower peak current rating (e.g., SMBJ26A) reducing surge protection.

Recommended alternatives

A functional match in the same package, but with a lower standoff voltage that requires engineering review.

View details

Alternative comparison matrix

Feature / factor	P6SMB30A	SMBJ24A	SMBJ26A	Compatibility / risk
Package	DO-214AA (SMB)	DO-214AA (SMB)	SMB (DO-214AA)	DO-214AA (SMB) / SMB (DO-214AA) — Same package family ensures form and fit.; SMBJ26A: Same package family ensures form and fit.
Polarity Or Type	Unidirectional	Unidirectional	Unidirectional	Unidirectional — Polarity matches the target part.; SMBJ26A: Polarity matches the target part.
Voltage V	25.6V	24.0V	26.0V	24.0V / 26.0V — Standoff voltage is lower, may clamp prematurely.; SMBJ26A: Slightly higher standoff voltage is safe.
Current A	14.7A	15.5A	14.2A - 14.3A	15.5A / 14.2A - 14.3A — Higher peak pulse current offers more protection.; SMBJ26A: Peak pulse current is slightly lower, reducing surge capacity.
Power W	600W	600W	600W	600W — Peak pulse power rating is identical.; SMBJ26A: Peak pulse power rating is identical.

Application & sourcing insights

Questions & answers

SMBJ26A is a strong alternative. It matches the package, polarity, and power rating, with a slightly higher standoff voltage. However, its peak current rating is slightly lower, which requires engineering review.