MF-NSML175/6-2 Equivalent & Substitute Parts

Part Overview

The MF-NSML175/6-2 is a polymeric PTC resettable fuse manufactured by Bourns Inc. as part of the Multifuse® MF-NSML/X series. This surface mount component in 1206 (3216 Metric) package format provides overcurrent protection with automatic reset capability. The part is active in production with 5801 units currently in stock. Substitute parts are identified when equivalent functional performance can be maintained within the allowed electrical and mechanical parameter ranges for this product category.

Substiute Parts

MF-NSML175/6-2

Bourns Inc.In Stock: 5896MF-NSML175/6-2 Datasheet

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MF-NSML175/12-2

Bourns Inc.In Stock: 5064MF-NSML175/12-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The MF-NSML175/12-2 qualifies as a substitute based on the following allowed parameter equivalencies:

Identical Parameters:

• Polymeric PTC resettable fuse type
• Current - Hold (Ih) (Max): 1.75 A
• Current - Trip (It): 4.6 A
• Current - Max: 50 A
• Time to Trip: 5 s
• Resistance - Initial (Ri) (Min): 6 mOhms
• Resistance - Post Trip (R1) (Max): 50 mOhms
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 1206 (3216 Metric), Concave
• Size / Dimension: 0.128" L x 0.063" W (3.25mm x 1.60mm)
• Thickness (Max): 0.028" (0.70mm)
• Approval Agency: cURus, TUV
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 2A (4 Weeks)
• REACH Status: REACH Unaffected

Differing Parameter:

• Voltage - Max: 12V (versus 6V in MF-NSML175/6-2)

The substitute part maintains all critical electrical and mechanical characteristics while offering higher voltage rating capability within the same physical footprint and thermal performance envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the MF-NSML175/6-2 and MF-NSML175/12-2 are active production components from Bourns Inc. with identical regulatory certifications (cURus, TUV), RoHS3 compliance, and REACH unaffected status. Selection between these parts depends on the system voltage requirement. The MF-NSML175/6-2 is specified for 6V maximum voltage applications, while the MF-NSML175/12-2 accommodates 12V maximum voltage applications. Both parts share identical current protection characteristics (1.75 A hold current, 4.6 A trip current), thermal performance, and physical dimensions, ensuring direct compatibility at the board level when voltage requirements align.

Frequently Asked Questions (FAQ)

Q: Can MF-NSML175/12-2 be used in place of MF-NSML175/6-2?

A: The MF-NSML175/12-2 can be used as a substitute only if the application circuit operates at or below 6V. The substitute part is rated for 12V maximum, which exceeds the original specification. All other electrical and mechanical parameters are identical, and the physical footprint is the same.

Q: What is the primary difference between these two parts?

A: The sole difference is the maximum voltage rating: MF-NSML175/6-2 is rated for 6V, while MF-NSML175/12-2 is rated for 12V. Current protection thresholds, hold current, trip current, resistance characteristics, and package dimensions are identical.

Q: Are both parts available in the same package format?

A: Yes. Both MF-NSML175/6-2 and MF-NSML175/12-2 are supplied in 1206 (3216 Metric) surface mount package with concave geometry, identical dimensions of 0.128" L x 0.063" W (3.25mm x 1.60mm), and maximum thickness of 0.028" (0.70mm).

Q: Do these parts have the same regulatory approvals?

A: Yes. Both parts carry cURus and TUV approvals, are ROHS3 compliant, and have REACH unaffected status. Moisture sensitivity level is identical at 2A (4 Weeks) for both parts.

Q: What is the hold current specification for both parts?

A: Both MF-NSML175/6-2 and MF-NSML175/12-2 have a maximum hold current (Ih) of 1.75 A with a trip current (It) of 4.6 A and maximum current rating of 50 A.