PFMU.050.2 Equivalent & Substitute Parts

Part Overview

The PFMU.050.2 is a Polymeric PTC Resettable Fuse rated at 13.2V with a 500 mA hold current, manufactured by SCHURTER Inc. in a 1210 (3225 Metric) surface mount package. This component is classified as Obsolete, making identification of suitable substitutes essential for ongoing design support and procurement planning. The PFMU series has been superseded by the PFUF series, which maintains electrical equivalence while offering improved availability and active product status.

Substiute Parts

PFMU.050.2

SCHURTER Inc.In Stock: 1143PFMU.050.2 Datasheet

Current PartRFQ

PFUF.050.2

SCHURTER Inc.In Stock: 2085PFUF.050.2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PFMU.050.2 is determined by strict equivalence across the following critical parameters:

• Voltage rating: 13.2V maximum
• Hold current (Ih): 500 mA maximum
• Trip current (It): 1 A
• Maximum current: 40 A
• Time to trip: 100 ms
• Initial resistance (Ri): 180 mOhms minimum
• Post-trip resistance (R1): 900 mOhms maximum
• Operating temperature range: -40°C to 85°C
• Surface mount package: 1210 (3225 Metric)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

The PFUF.050.2 meets all electrical and mechanical requirements for direct substitution. Both components are manufactured by SCHURTER Inc. and share identical electrical specifications. The primary distinction is product status: PFMU.050.2 is Obsolete, while PFUF.050.2 is Active with higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The PFUF.050.2 is the direct electrical and mechanical equivalent of the PFMU.050.2. Selection of PFUF.050.2 is supported by:

• Identical electrical specifications across all critical parameters
• Active product status with established supply chain availability
• ROHS3 compliance and REACH Unaffected status matching the original component
• Approval certifications (cURus, TUV) providing regulatory continuity
• Higher current inventory (2065 Pcs vs. 1087 Pcs) for the substitute part

The PFUF.050.2 is supplied in Tape & Reel (TR) packaging, which is standard for high-volume surface mount assembly operations. The concave package variant of PFUF.050.2 presents no functional difference in electrical performance or board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can PFUF.050.2 be used as a direct replacement for PFMU.050.2 in existing designs?

A: Yes. The PFUF.050.2 meets all electrical and mechanical specifications of the PFMU.050.2. Both components share identical voltage ratings, current characteristics, resistance values, and operating temperature ranges. The 1210 (3225 Metric) surface mount package is identical, ensuring PCB footprint compatibility.

Q: What is the difference between PFMU.050.2 and PFUF.050.2?

A: The primary differences are product status and packaging format. PFMU.050.2 is Obsolete, while PFUF.050.2 is Active. PFUF.050.2 is supplied in Tape & Reel (TR) format, which is standard for automated assembly. The concave package variant of PFUF.050.2 does not affect electrical performance or board-level compatibility.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both components have identical operating temperature ranges (-40°C to 85°C), initial resistance (180 mOhms minimum), post-trip resistance (900 mOhms maximum), and trip characteristics (1 A trip current, 100 ms time to trip).

Q: What certifications apply to the substitute part?

A: PFUF.050.2 holds cURus and TUV approvals. Both the original and substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements.

Q: Is the Tape & Reel packaging compatible with standard pick-and-place equipment?

A: Yes. Tape & Reel (TR) packaging is the standard format for automated surface mount assembly. The 1210 (3225 Metric) package size is compatible with standard feeder systems and placement equipment.