Is there a pin-compatible replacement for MF-PSMF110X-2?

Yes, several PTC fuses like TECHFUSE SL0805150 share the 0805 package and are pin-compatible. However, their electrical characteristics, especially hold and trip currents, differ and must be verified for your application.

What risks should I check before replacing MF-PSMF110X-2?

The main risk is inadequate overcurrent protection. A substitute with a higher hold current (e.g., 1.5A vs 1.1A) may not protect downstream components as intended. Always verify the new current ratings against your circuit's requirements.

MF-PSMF110X-2 Alternatives, Datasheet & Cross Reference | BOURNS

The Bourns MF-PSMF110X-2 is a 1.1A, 6V PTC resettable fuse in an 0805 package. Finding a direct replacement requires matching hold/trip currents, while functional alternatives with different current ratings are available.

AI replacement insight

Electrical riskmedium

Higher hold/trip currents reduce circuit protection.

Package risklow

All PTC candidates share the same 0805 package.

Can it be replaced directly?

No exact drop-in replacement with a 1.1A hold current was found in this batch. All candidates have higher current ratings, requiring engineering review.

Best replacement path

The best path is to find a PTC fuse with a hold current as close as possible to the original 1.1A, like the TECHFUSE SL0805150 (1.5A), and validate the new protection level.

Main risk

Using a substitute with a higher hold current will alter the circuit's overcurrent protection threshold, potentially leading to damage.

Recommended alternatives

Functional alternative in the same 0805 package and 6V rating, but with a higher 1.5A hold current.

View details

Alternative comparison matrix

Feature / factor	MF-PSMF110X-2	SL0805150	SMD0805-200-6V	Compatibility / risk
Package	0805	0805	0805	0805 — Package matches; SMD0805-200-6V: Package matches
Voltage	6.0V	6.0V	6.0V	6.0V — Max voltage matches; SMD0805-200-6V: Max voltage matches
Current	1.1A	1.5A	2.0A	1.5A / 2.0A — Hold Current (Ih) is higher, offers less protection.; SMD0805-200-6V: Hold Current (Ih) is significantly higher, offers much less protection.
Trip Current	2.2A	3.0A	4.0A	3.0A / 4.0A — Trip Current (It) is higher.; SMD0805-200-6V: Trip Current (It) is significantly higher.
Resistance	0.210Ω	0.065Ω	-	0.065Ω — Max resistance is lower (better).

Application & sourcing insights

Questions & answers

TECHFUSE SL0805150 is a potential alternative with the same 0805 package and 6V rating, but a higher hold current of 1.5A. This change requires engineering review to ensure circuit protection is adequate.