Polymeric PTC Resettable Fuse MF-MSMD075-2 Equivalent & Substitute Parts

Part Overview

The Bourns MF-MSMD075-2 is a polymeric PTC resettable fuse rated for 13.2V maximum voltage with 750 mA hold current, housed in a 1812 (4532 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

MF-MSMD075-2

Bourns Inc.In Stock: 3305MF-MSMD075-2 Datasheet

Current PartRFQ

MF-MSMF075-2

Bourns Inc.In Stock: 43331MF-MSMF075-2 Datasheet

DirectRFQ

0ZCG0075FF2C

Bel Fuse Inc.In Stock: 24720ZCG0075FF2C Datasheet

DirectRFQ

PFMF.075.2

SCHURTER Inc.In Stock: 9258PFMF.075.2 Datasheet

DirectRFQ

PTS181213V075

Eaton - Electronics DivisionIn Stock: 2783PTS181213V075 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following electrical and mechanical parameters:

• Voltage rating must equal or exceed 13.2V maximum
• Current hold (Ih) must equal 750 mA
• Current trip (It) must equal 1.5 A
• Time to trip must equal 200 ms
• Resistance specifications (Ri and R1) must match within stated tolerances
• Operating temperature range must encompass -40°C ~ 85°C
• Package must be 1812 (4532 Metric) surface mount
• Polymeric type construction required

Four substitute parts meet these criteria across manufacturers Bourns, Bel Fuse, SCHURTER, and Eaton, each offering active product status with improved compliance profiles compared to the obsolete original.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts maintain full electrical and mechanical compatibility with the MF-MSMD075-2 across the specified parameter set. Selection should prioritize product status and compliance requirements:

MF-MSMF075-2 (Bourns Inc.) — Preferred primary substitute. Same manufacturer as original part, active status, ROHS3 compliant, AEC-Q200 rated. Concave package variant provides improved PCB contact geometry. Highest inventory availability (43,300 pcs).

PTS181213V075 (Eaton - Electronics Division) — Active status, ROHS3 compliant, cURus and TUV certified. Suitable for applications requiring multi-source qualification. Moderate inventory (2,736 pcs).

PFMF.075.2 (SCHURTER Inc.) — Active status, ROHS3 compliant, cURus and TUV certified. Established alternative for European supply chains. Good inventory availability (9,174 pcs).

0ZCG0075FF2C (Bel Fuse Inc.) — Voltage rating of 16V provides margin above the 13.2V requirement. Active status, ROHS3 compliant, AEC-Q200 rated. Suitable for applications with higher voltage headroom requirements. Limited inventory (2,400 pcs).

Frequently Asked Questions (FAQ)

Q: Can MF-MSMF075-2 directly replace MF-MSMD075-2 in existing designs?

A: Yes. Both parts share identical electrical specifications (13.2V, 750 mA hold, 1.5 A trip, 200 ms response time) and 1812 surface mount package. The MF-MSMF075-2 features a concave package variant, which is mechanically compatible with standard 1812 footprints and provides improved solder joint reliability.

Q: What is the significance of the concave package variant?

A: The concave package geometry improves contact with PCB pads during reflow soldering, resulting in more consistent solder joint formation. This is a mechanical refinement that does not affect electrical performance or footprint compatibility.

Q: Why is 0ZCG0075FF2C rated for 16V when the original is 13.2V?

A: The 16V rating provides additional voltage margin. This part is electrically compatible because it meets or exceeds all electrical parameters of the 13.2V specification. Selection of the 16V variant is appropriate for applications where higher voltage headroom is beneficial or required.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts carry ROHS3 compliance status, whereas the original MF-MSMD075-2 is RoHS non-compliant. This compliance improvement is significant for new designs and production continuity in regulated markets.

Q: What certifications should I prioritize for automotive or safety-critical applications?

A: AEC-Q200 certification is present on MF-MSMF075-2 and 0ZCG0075FF2C. All substitutes carry cURus and TUV approvals. Verify specific application requirements against your design standards before final selection.

Q: Is there a difference in moisture sensitivity between substitutes?

A: MF-MSMF075-2 and PTS181213V075 carry MSL 1 (Unlimited). 0ZCG0075FF2C carries MSL 2A (4 Weeks). PFMF.075.2 is listed as Not Applicable. For standard surface mount assembly processes, these differences are not operationally significant.