Is there a pin-compatible replacement for SM24CANB-02HTG?

Yes, several parts like CDSOT23-T24CAN share the SOT-23 package and are likely pin-compatible. However, they are not electrically identical due to lower power ratings, so they are not 'drop-in' replacements. Always verify the pinout in the datasheet.

What risks should I check before replacing SM24CANB-02HTG?

The main risk is the lower peak pulse power rating. The original part is rated for 500W, while alternatives are rated between 230W and 300W. You must verify that the lower rating is sufficient to protect your circuit from expected transient voltage events.

SM24CANB-02HTG Alternatives, Datasheet & Cross Reference | TECH PUBLIC

SM24CANB-02HTG is a 2-line bi-directional TVS diode from TECH PUBLIC, offering 500W of peak power protection for 24V systems like CAN bus in a standard SOT-23 package. Finding a substitute requires careful attention to its high power rating.

AI replacement insight

Electrical riskhigh

Lower power rating (230W-300W vs 500W) may not withstand the same transient energy levels.

Package risklow

All viable candidates use the same SOT-23 package, suggesting form and fit compatibility.

Sourcing risklow

Multiple manufacturers (Bourns, Diodes Inc.) offer similar parts, improving availability.

Can it be replaced directly?

No direct, one-to-one replacement was found. Several candidates like CDSOT23-T24CAN and DESD2CAN2SOQ-7 are functionally similar and share the same package and voltage rating, but all have significantly lower power ratings.

Best replacement path

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Main risk

The primary risk is electrical overstress. All viable alternatives have a peak pulse power rating of 300W or less, compared to the target's 500W. Using a lower-rated part without analysis could lead to premature failure.

Recommended alternatives

A bi-directional TVS diode for CAN bus in the same SOT-23 package, but with a lower power rating.

View details

Alternative comparison matrix

Feature / factor	SM24CANB-02HTG	CDSOT23-T24CAN	DESD2CAN2SOQ-7	BST23C242V	Compatibility / risk
Package	SOT-23	SOT-23	SOT23	SOT-23	SOT-23 / SOT23 — Package matches, likely pin compatible.; DESD2CAN2SOQ-7: Package matches.; BST23C242V: Package matches.
Polarity Or Type	Bi-directional	Bi-directional	Bi-directional	Bidirectional	Bi-directional / Bidirectional — Polarity matches.; DESD2CAN2SOQ-7: Polarity matches based on ES data.; BST23C242V: Polarity matches.
Voltage V	24.0V	24.0V	24.0V	24.0V	24.0V — Working voltage matches.; DESD2CAN2SOQ-7: Working voltage matches.; BST23C242V: Working voltage matches.
Power W	500.0W	250.0W	230.0W	250.0W	250.0W / 230.0W — Candidate has lower peak power handling.; DESD2CAN2SOQ-7: Candidate has significantly lower peak power.; BST23C242V: Candidate has lower peak power handling.
Application	Not specified	-	AEC-Q101	-	AEC-Q101 — Automotive qualification is a potential benefit.

Application & sourcing insights

Questions & answers

There is no exact drop-in replacement. The best alternatives are CDSOT23-T24CAN from Bourns or DESD2CAN2SOQ-7 from Diodes Inc., as they are designed for CAN bus protection. However, both have lower power ratings and require engineering review.