Is there a pin-compatible replacement for BSMD1812-030-60V?

Yes, several parts like TECHFUSE mSMD050-60V are pin-compatible in the same 1812 package. However, they are not electrically identical. Their hold and trip currents are higher, so they are not drop-in replacements without engineering review.

What risks should I check before replacing BSMD1812-030-60V?

The main risk is electrical. All suitable alternatives have a higher hold current. This means your circuit will allow more current before the fuse trips, potentially damaging components the fuse was meant to protect. Always verify the new current limits.

BSMD1812-030-60V Alternatives, Datasheet & Cross Reference | BHFUSE

BSMD1812-030-60V is a 60V PTC resettable fuse from BHFUSE in an 1812 package, designed for overcurrent protection with a 300mA hold current. Finding a replacement requires careful matching of electrical parameters.

AI replacement insight

Electrical riskmedium

Higher hold/trip current on all candidates alters the protection level.

Package risklow

All viable candidates match the 1812 package, ensuring form-fit compatibility.

Can it be replaced directly?

No direct, drop-in replacement with identical key parameters was found. All viable alternatives have a higher hold current, which changes the circuit's protection characteristics.

Best replacement path

The best path is to use a part from the same family, like BSMD1812-050-60V, but this requires verifying if the circuit can tolerate a higher hold current of 0.5A.

Main risk

The primary risk is electrical; using a substitute with a higher hold current may leave the downstream circuit unprotected against overcurrent conditions between the original 0.3A and the new 0.5A threshold.

Recommended alternatives

A higher-current version from the same manufacturer and series. Requires design review.

View details

Alternative comparison matrix

Feature / factor	BSMD1812-030-60V	BSMD1812-050-60V	mSMD050-60V	JK-MSMD050-60V	Compatibility / risk
Package	1812	1812	-	-	1812 — Form factor matches.
Voltage	60V	60V	-	-	60V — Maximum voltage rating matches.
Current	0.3A	0.5A	-	-	40A — Max fault current matches.
Power	0.8W	1.0W	-	-	0.8W — Power dissipation matches.

Application & sourcing insights

Questions & answers

The best alternative is likely BSMD1812-050-60V from the same manufacturer, but it has a higher hold current (0.5A vs 0.3A). You must verify if this change is acceptable for your circuit's protection scheme.