Is there a pin-compatible replacement for MF-MSMF200-2?

Yes, SMD1812-200C-16V is a pin-compatible alternative in the same 1812 package with identical hold/trip currents. The main difference is its lack of AEC-Q200 automotive qualification.

What risks should I check before replacing MF-MSMF200-2?

Before replacing MF-MSMF200-2, you must verify if your application requires AEC-Q200 qualification. If so, none of the suggested parts are suitable. Also, confirm the hold current matches your circuit's protection needs.

MF-MSMF200-2 Alternatives, Datasheet & Cross Reference | BOURNS

MF-MSMF200-2 is a 2A, 8V PTC resettable fuse in an 1812 package, qualified to AEC-Q200 for automotive use. Finding a substitute requires matching its current ratings and, critically, its automotive-grade qualification.

AI replacement insight

Application riskhigh

Candidates lack AEC-Q200 qualification, making them unsuitable for automotive use without extensive testing.

Electrical riskmedium

Some candidates have different hold currents, which will alter the circuit's protection characteristics.

Can it be replaced directly?

No direct, fully-qualified replacement was found. The closest match, SMD1812-200C-16V, lacks the target's AEC-Q200 automotive qualification.

Best replacement path

For non-automotive applications, SMD1812-200C-16V is a strong candidate with matching current ratings. For automotive use, a new search for an AEC-Q200 qualified 2A/8V+ PTC fuse is required.

Main risk

The primary risk is using a non-automotive qualified part in an automotive application, which can lead to reliability issues. A secondary risk is selecting a part with a different current rating, compromising overcurrent protection.

Recommended alternatives

Strong functional match with identical hold current and higher voltage rating, but lacks automotive qualification.

View details

Alternative comparison matrix

Feature / factor	MF-MSMF200-2	SMD1812-200C-16V	SMD1812-260C-24V	Compatibility / risk
Package	1812 (4532 metric)	1812	1812	1812 — Form factor matches.; SMD1812-260C-24V: Form factor matches.
Current	2.0A	2.0A	2.6A	2.0A / 2.6A — Hold current matches target.; SMD1812-260C-24V: Higher hold current (+30%) will change the circuit's protection point.
Voltage	8.0V	16.0V	24.0V	16.0V / 24.0V — Higher voltage rating provides more margin.; SMD1812-260C-24V: Much higher voltage rating provides significant margin.
Resistance	0.08Ω	0.120Ω	-	0.120Ω — Higher max resistance may affect post-trip behavior.
Application	AEC-Q200	Not specified	Not specified	Not specified — Target is AEC-Q200 qualified for automotive use; candidate is not.; SMD1812-260C-24V: Target is AEC-Q200 qualified; candidate is not.

Application & sourcing insights

Questions & answers

The best alternative found is SMD1812-200C-16V, which matches the 2A hold current and 1812 package. However, it is not AEC-Q200 qualified and is only suitable for non-automotive applications.