MF-USML260/6-2 Equivalent & Substitute Parts

Part Overview

The MF-USML260/6-2 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® series. This surface mount component is rated for 6V maximum voltage with a 2.6A hold current, housed in a 1210 (3225 Metric) package with concave geometry. The part is active in production status and widely used in circuit protection applications requiring automatic reset functionality. Substitute parts may be required due to inventory constraints, supply chain considerations, or specific application requirements within the defined electrical and mechanical parameter ranges.

Substiute Parts

MF-USML260/6-2

Bourns Inc.In Stock: 1205MF-USML260/6-2 Datasheet

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MF-USML260/12-2

Bourns Inc.In Stock: 6116MF-USML260/12-2 Datasheet

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PTSLR12106V260

Eaton - Electronics DivisionIn Stock: 6469PTSLR12106V260 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MF-USML260/6-2 are classified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Compatibility Parameters:

• Voltage - Max: 6V (exact match required for direct substitution)
• Current - Hold (Ih) (Max): 2.6 A (exact match required)
• Operating Temperature: -40°C ~ 85°C (must meet or exceed this range)

Mechanical Compatibility Parameters:

• Package / Case: 1210 (3225 Metric), Concave (exact match required for PCB footprint compatibility)
• Mounting Type: Surface Mount (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (required for regulatory alignment)
• Approval Agency: cURus, TUV (required certifications)

The PTSLR12106V260 from Eaton - Electronics Division meets the electrical and mechanical requirements for direct substitution, as it maintains identical voltage, current hold, package geometry, and mounting specifications. The MF-USML260/12-2 is classified as an upgrade option due to its higher voltage rating (12V), which provides enhanced protection margin in applications where voltage headroom is available.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (PTSLR12106V260): The PTSLR12106V260 from Eaton - Electronics Division is electrically and mechanically equivalent to the MF-USML260/6-2. Both components share identical voltage (6V), current hold (2.6A), package geometry (1210 Concave), and mounting type (Surface Mount). Both maintain ROHS3 compliance and hold cURus and TUV certifications. This part is suitable for direct replacement in applications where the MF-USML260/6-2 is specified.

Upgrade Option (MF-USML260/12-2): The MF-USML260/12-2 is a higher voltage variant (12V) within the same Multifuse® series and package footprint. This part is suitable only in applications where the circuit voltage does not exceed 12V and where the higher voltage rating provides design margin. The MF-USML260/12-2 maintains identical current hold (2.6A), package dimensions, and mounting specifications. Both parts are manufactured by Bourns Inc. and hold equivalent certifications (cURus, TUV, with MF-USML260/12-2 additionally holding cUL approval).

All substitute options maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can PTSLR12106V260 be used as a direct replacement for MF-USML260/6-2? A: Yes. The PTSLR12106V260 meets all electrical and mechanical requirements for direct substitution. Both components are rated for 6V maximum voltage, 2.6A hold current, and use identical 1210 (3225 Metric) concave surface mount packages. Certifications (cURus, TUV) and RoHS compliance are equivalent.

Q: What is the difference between MF-USML260/6-2 and MF-USML260/12-2? A: The primary difference is voltage rating. MF-USML260/6-2 is rated for 6V maximum, while MF-USML260/12-2 is rated for 12V maximum. All other electrical parameters (current hold, trip current, resistance values) and mechanical specifications (package, dimensions, mounting type) are identical. The 12V variant is suitable only in applications where circuit voltage does not exceed 12V.

Q: Are there any thickness differences between substitute parts? A: Yes. The PTSLR12106V260 has a maximum thickness of 0.028" (0.70mm), while both Bourns parts (MF-USML260/6-2 and MF-USML260/12-2) have a maximum thickness of 0.031" (0.80mm). This 0.003" difference is within typical PCB assembly tolerances but should be verified if height clearance is critical in the application.

Q: Do all substitute parts have the same trip current? A: No. The MF-USML260/6-2 and MF-USML260/12-2 both have a trip current (It) of 5.2A, while the PTSLR12106V260 has a trip current of 5A. This 0.2A difference is minor but should be considered in applications with tight trip current specifications.

Q: What certifications do these parts hold? A: MF-USML260/6-2 and PTSLR12106V260 both hold cURus and TUV certifications. MF-USML260/12-2 holds cUL, cURus, and TUV certifications, providing additional regulatory coverage.

Q: Are all parts RoHS compliant? A: Yes. All three parts (MF-USML260/6-2, PTSLR12106V260, and MF-USML260/12-2) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.