MF-R025-2-99 Equivalent & Substitute Parts

Part Overview

The MF-R025-2-99 is a Polymeric PTC Resettable Fuse manufactured by Bourns Inc. in the Multifuse® MF-R series. This component is rated for 60V maximum voltage with a 250 mA hold current and 500 mA trip current, designed for through-hole radial mounting in disc configuration. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

MF-R025-2-99

Bourns Inc.In Stock: 754MF-R025-2-99 Datasheet

Current PartRFQ

MF-R025-2

Bourns Inc.In Stock: 11076MF-R025-2 Datasheet

Parametric EquivalentRFQ

MF-R025-2-17

Bourns Inc.In Stock: 862MF-R025-2-17 Datasheet

Parametric EquivalentRFQ

MF-RX025/72-2-17

Bourns Inc.In Stock: 1115MF-RX025/72-2-17 Datasheet

Parametric EquivalentRFQ

PFRA.025.2

SCHURTER Inc.In Stock: 1024PFRA.025.2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MF-R025-2-99 is determined by strict equivalence across the following critical parameters:

• Voltage - Max: 60V (primary electrical constraint)
• Current - Hold (Ih) (Max): 250 mA (functional threshold)
• Current - Trip (It): 500 mA (protection characteristic)
• Mounting Type: Through Hole
• Package / Case: Radial, Disc
• Physical dimensions: 0.291" Dia x 0.122" T (7.40mm x 3.10mm)
• Lead Spacing: 0.201" (5.10mm)

Parts meeting all these parameters are classified as parametric equivalents. The MF-RX025/72-2-17 operates at 72V maximum voltage and is included as a higher-voltage alternative for applications where voltage headroom is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete MF-R025-2-99, the active Bourns Inc. parts MF-R025-2 and MF-R025-2-17 provide identical electrical and mechanical specifications. Both are ROHS3 compliant and maintain the same 60V/250 mA rating.

MF-R025-2-17 offers enhanced certification coverage with cUL, cURus, TUV, and UL approvals, plus AEC-Q200 automotive qualification. This part is suitable for applications requiring broader regulatory compliance.

MF-R025-2 is available in Cut Tape packaging and represents the baseline active equivalent with cURus and TUV certifications.

The SCHURTER PFRA.025.2 provides an alternative from a different manufacturer while maintaining identical electrical parameters and physical form factor. This part is ROHS3 compliant with cURus and TUV approvals.

The MF-RX025/72-2-17 operates at 72V maximum voltage. This part is suitable only for applications where the circuit voltage does not exceed 60V, or where higher voltage margin is required. It carries the same 250 mA hold current and identical mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can MF-R025-2 directly replace MF-R025-2-99?

A: Yes. Both parts share identical electrical ratings (60V, 250 mA hold current, 500 mA trip current), physical dimensions (0.291" Dia x 0.122" T), lead spacing (0.201"), and mounting type (through-hole radial disc). The primary difference is product status: MF-R025-2-99 is obsolete while MF-R025-2 is active.

Q: What is the difference between MF-R025-2 and MF-R025-2-17?

A: Both parts are electrically and mechanically identical. The difference is packaging format: MF-R025-2 is supplied in Cut Tape (CT), while MF-R025-2-17 is supplied in Tape & Reel (TR). Additionally, MF-R025-2-17 includes AEC-Q200 automotive qualification and broader approval agency certifications (cUL, cURus, TUV, UL versus cURus, TUV).

Q: Can PFRA.025.2 replace MF-R025-2-99?

A: Yes. The SCHURTER PFRA.025.2 is a parametric equivalent with identical electrical specifications and physical form factor. It is manufactured by a different supplier but meets the same functional requirements. Both are ROHS3 compliant and carry cURus and TUV certifications.

Q: When should MF-RX025/72-2-17 be used instead of MF-R025-2-99?

A: MF-RX025/72-2-17 is rated for 72V maximum voltage compared to 60V for MF-R025-2-99. Use this part only in applications where circuit voltage exceeds 60V but does not exceed 72V, or where additional voltage margin is required. All other electrical and mechanical parameters remain identical.

Q: Are there packaging considerations when substituting these parts?

A: Yes. MF-R025-2 is supplied in Cut Tape (CT) packaging, while MF-R025-2-17 and MF-RX025/72-2-17 are supplied in Tape & Reel (TR). PFRA.025.2 is supplied in Cut Tape (CT). Verify your assembly equipment compatibility with the selected packaging format before procurement.

Q: What certifications apply to each substitute part?

A: MF-R025-2 and PFRA.025.2 carry cURus and TUV approvals. MF-R025-2-17 and MF-RX025/72-2-17 carry cUL, cURus, TUV, and UL approvals. Select based on your application's regulatory requirements.