Is there a pin-compatible replacement for mSMD050-60V?

Yes, several parts like JK-MSMD050-60V and BSMD1812-050-60V share the same 1812 package. However, they are not electrically identical and have a lower max fault current rating, posing a safety risk without validation.

What risks should I check before replacing mSMD050-60V?

The primary risk is the maximum fault current (Imax). The target is rated for 100A, while many alternatives are only rated for 40A. Using a lower-rated part can lead to device failure or fire hazard in high-current fault conditions.

mSMD050-60V Alternatives, Datasheet & Cross Reference | TECHFUSE

The TECHFUSE mSMD050-60V is a 60V, 0.5A PTC resettable fuse in a standard 1812 package. Finding a replacement requires matching these key parameters, especially the 100A max fault current rating.

AI replacement insight

Electrical riskhigh

Lower Imax (40A vs 100A) can cause fuse failure or fire hazard under fault conditions.

Package risklow

Candidates share the same 1812 package.

Can it be replaced directly?

No direct, fully equivalent replacement is identified. All potential alternatives require a parametric trade-off, specifically a lower maximum fault current rating.

Best replacement path

Parametric alternatives with lower max fault current.

Main risk

The significant reduction in maximum fault current (Imax) from 100A to 40A in available alternatives.

Recommended alternatives

A 1812 PTC fuse with matching voltage and hold current, but a lower max fault current rating requires review.

View details

Alternative comparison matrix

Feature / factor	mSMD050-60V	BSMD1812-050-60V	JK-MSMD050-60V	Compatibility / risk
Package	1812	1812	-	1812 — Form factor matches.
Voltage	60V	60V	-	60V — Maximum voltage rating matches.
Current	0.5A	40A	-	40A — Max Fault Current (Imax) is significantly lower.
Power	0.8W	1.0W	-	1.0W — Higher power dissipation is acceptable.
Resistance	1.0Ω	-	1.4Ω	1.4Ω — Post-trip resistance is higher, may affect circuit recovery.

Application & sourcing insights

Questions & answers

No direct drop-in replacements were found. Candidates like JK-MSMD050-60V match the package, voltage, and hold current but have a lower max fault current (40A vs 100A), which requires careful engineering review.