MF-NSML260/6-2 Equivalent & Substitute Parts

Part Overview

The MF-NSML260/6-2 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, packaged in 1206 (3216 Metric) form factor. The part is Active status and widely used in circuit protection applications requiring automatic reset capability. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility and inventory optimization.

Substiute Parts

MF-NSML260/6-2

Bourns Inc.In Stock: 952MF-NSML260/6-2 Datasheet

Current PartRFQ

MF-NSML260/12-2

Bourns Inc.In Stock: 19212MF-NSML260/12-2 Datasheet

UpgradeRFQ

PTSLR12066V260

Eaton - Electronics DivisionIn Stock: 2306PTSLR12066V260 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MF-NSML260/6-2 are classified based on the following substitution criteria:

Upgrade Substitute (Voltage Rating Change): MF-NSML260/12-2 maintains identical hold current (2.6A), trip current (5.2A), package form factor (1206), and mounting type (Surface Mount). The voltage rating increases from 6V to 12V, allowing use in higher voltage applications while preserving all other electrical characteristics and mechanical compatibility.

Similar Substitute (Manufacturer Alternative): PTSLR12066V260 from Eaton - Electronics Division matches the original 6V voltage rating and 2.6A hold current with identical package (1206) and mounting type. Minor variations exist in trip current (5A vs 5.2A), initial resistance (3 mOhms vs 4 mOhms), and thickness (1.20mm vs 1.00mm), representing acceptable tolerance ranges within the polymeric PTC resettable fuse category.

Parameter Comparison

Engineering Selection Recommendations

MF-NSML260/12-2 Selection: This Bourns upgrade substitute is appropriate for applications requiring higher voltage tolerance while maintaining identical hold and trip current specifications. Both parts carry Active product status, ROHS3 compliance, and cURus/TUV approvals. Selection is determined by circuit voltage requirements: use MF-NSML260/12-2 in 12V systems where the original 6V rating is insufficient.

PTSLR12066V260 Selection: This Eaton alternative maintains the original 6V voltage rating and 2.6A hold current with identical package and mounting compatibility. Active product status and equivalent certifications (cURus, TUV, ROHS3) support direct substitution in 6V applications. Minor parameter variations (trip current 5A vs 5.2A, initial resistance 3 mOhms vs 4 mOhms, thickness 1.20mm vs 1.00mm) fall within acceptable engineering tolerances for polymeric PTC resettable fuse technology.

Frequently Asked Questions (FAQ)

Q: Can MF-NSML260/12-2 be used as a direct replacement for MF-NSML260/6-2?

A: MF-NSML260/12-2 is a voltage upgrade substitute, not a direct replacement. It maintains identical hold current (2.6A), trip current (5.2A), and package form factor (1206 Surface Mount). Use this part only in applications where the circuit voltage is 12V or where higher voltage tolerance is required. In 6V circuits, the original MF-NSML260/6-2 or PTSLR12066V260 are appropriate selections.

Q: What are the key differences between PTSLR12066V260 and MF-NSML260/6-2?

A: Both parts share 6V voltage rating, 2.6A hold current, 1206 package, and surface mount configuration. PTSLR12066V260 has a slightly lower trip current (5A vs 5.2A), lower initial resistance (3 mOhms vs 4 mOhms), and greater thickness (1.20mm vs 1.00mm). These variations represent normal manufacturing tolerances within the polymeric PTC resettable fuse category and do not prevent substitution in equivalent applications.

Q: Are all three parts PCB layout compatible?

A: MF-NSML260/6-2 and MF-NSML260/12-2 are fully compatible with identical 1206 package dimensions (3.25mm x 1.60mm) and 1.00mm thickness. PTSLR12066V260 has the same length and width (3.25mm x 1.65mm) but increased thickness (1.20mm). Verify PCB clearance for PTSLR12066V260 in space-constrained layouts before substitution.

Q: Do all substitute parts carry the same regulatory approvals?

A: Yes. MF-NSML260/6-2, MF-NSML260/12-2, and PTSLR12066V260 all carry cURus and TUV approvals with ROHS3 compliance. All parts are Active status products suitable for current production applications.

Q: Which substitute should I select for a 12V circuit?

A: Use MF-NSML260/12-2. This part is specifically rated for 12V maximum voltage while maintaining the 2.6A hold current and identical package specifications of the original part.