PFMU.010.2 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The PFMU.010.2 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., rated for 30V maximum voltage with a 100 mA hold current. This surface mount component in 1210 (3225 Metric) package is designed for overcurrent protection in electronic circuits. The product is currently obsolete, making identification of active equivalent parts essential for ongoing design support, maintenance, and new production requirements.

Substiute Parts

PFMU.010.2

SCHURTER Inc.In Stock: 833PFMU.010.2 Datasheet

Current PartRFQ

PFUF.010.2

SCHURTER Inc.In Stock: 7976PFUF.010.2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete PFMU.010.2 is determined by strict equivalence across the following critical parameters:

• Voltage rating: 30V maximum
• Hold current (Ih): 100 mA maximum
• Trip current (It): 300 mA
• Maximum current capacity: 10 A
• Time to trip: 600 ms
• Initial resistance: 800 mOhms minimum
• Post-trip resistance: 15 Ohms maximum
• Operating temperature range: -40°C to 85°C
• Mounting configuration: Surface mount
• Package footprint: 1210 (3225 Metric)
• Regulatory compliance: RoHS3 compliant

The PFUF.010.2 meets all electrical and thermal specifications while maintaining the same package category and compliance certifications, qualifying it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The PFUF.010.2 is the direct active equivalent for the obsolete PFMU.010.2. Both components share identical electrical specifications, thermal operating range, and package footprint classification. The PFUF.010.2 maintains ROHS3 compliance and carries current regulatory certifications (cURus, TUV), ensuring compliance with modern manufacturing and environmental standards. The transition from the obsolete PFMU series to the active PFUF series presents no functional or performance degradation for circuit protection applications requiring these specifications.

Frequently Asked Questions (FAQ)

Q: Can PFUF.010.2 be used as a direct replacement for PFMU.010.2 on existing PCBs?

A: Yes. Both components share identical electrical parameters (30V, 100 mA hold current, 300 mA trip current, 600 ms trip time) and the same 1210 (3225 Metric) package footprint. The concave profile variation in the PFUF.010.2 does not affect PCB mounting compatibility for standard surface mount assembly processes.

Q: What is the difference between PFMU and PFUF series designations?

A: PFMU.010.2 is an obsolete product line. PFUF.010.2 is the active equivalent from SCHURTER Inc., offering the same electrical and thermal performance with current manufacturing status and regulatory certifications.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. PFMU.010.2 carries CSA, TUV, and UL approvals. PFUF.010.2 carries cURus and TUV approvals. Both meet current regulatory requirements for their respective product statuses.

Q: Does the concave package variation affect circuit performance?

A: No. The concave profile is a mechanical variation that does not alter electrical characteristics, thermal performance, or protection behavior. It is compatible with standard surface mount assembly equipment and processes.

Q: What inventory considerations apply to this substitution?

A: PFMU.010.2 is obsolete with limited remaining stock (755 Pcs). PFUF.010.2 is active production with substantial availability (7891 Pcs), ensuring reliable long-term supply for new designs and production requirements.