Is there a pin-compatible replacement for PTVS24VS1UR?

No pin-compatible (drop-in) replacement in the same SOD-123 package has been verified in this review. Alternatives like SMCJ24A require a new PCB layout due to their larger size.

What risks should I check before replacing PTVS24VS1UR?

First, check package compatibility; alternatives may need a board redesign. Second, verify the standoff voltage (Vrwm) is 24V. Third, ensure the clamping voltage (Vc) is low enough to protect your circuit. Finally, confirm the power rating (Ppp) is at least 400W.

PTVS24VS1UR Alternatives, Datasheet & Cross Reference | FUXINSEMI

Finding a substitute for the PTVS24VS1UR TVS diode requires matching its 24V standoff voltage and compact SOD-123 package. While functional alternatives exist, they typically require a board redesign due to larger packages.

AI replacement insight

Package riskhigh

Candidates are in much larger packages (SMB/SMC vs SOD-123), requiring a board redesign.

Electrical riskmedium

Some candidates have weaker clamping voltage, reducing circuit protection. This must be verified for the application.

Can it be replaced directly?

No direct pin-compatible replacement has been verified. The primary challenge is the compact SOD-123 package of the original part.

Best replacement path

SMCJ24A offers the best electrical match but requires a board redesign for its larger SMC package.

Main risk

The main risk is package incompatibility. All reviewed candidates are in much larger SMB or SMC packages, requiring a PCB layout change.

Recommended alternatives

A relaxed alternative with higher power, but weaker voltage protection and a larger package requiring board redesign.

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Alternative comparison matrix

Feature / factor	PTVS24VS1UR	SMCJ24A	SMBJ26A	Compatibility / risk
Package	SOD-123	DO-214AB (SMC)	SMB (DO-214AA)	DO-214AB (SMC) / SMB (DO-214AA) — Not a drop-in replacement; requires board redesign.; SMBJ26A: Not a drop-in replacement; requires board redesign.
Voltage	24.0V	24.0V	26.0V	24.0V / 26.0V — Reverse standoff voltage matches.; SMBJ26A: Slightly higher standoff voltage may affect protection margin.
Power	400.0W	1500.0W	600.0W	1500.0W / 600.0W — Higher power rating provides more robust protection.; SMBJ26A: Higher power rating is an improvement.
Clamping Voltage	38.9V	38.9V	42.1V	38.9V / 42.1V — Maximum clamping voltage matches.; SMBJ26A: Higher clamping voltage offers less protection.

Application & sourcing insights

Questions & answers

SMCJ24A is the best functional alternative, offering the same 24V standoff voltage and higher power handling. However, it is in a much larger SMC package and requires a board redesign.