MF-PSML175/6-2 Equivalent & Substitute Parts

Part Overview

The MF-PSML175/6-2 is a polymeric PTC resettable fuse manufactured by Bourns Inc., rated for 6V maximum voltage with 1.75A hold current. This component is classified as Active product status and is designed for surface mount applications in the 0805 (2012 Metric) package format. PTC resettable fuses provide automatic overcurrent protection by increasing resistance when excessive current is detected, then resetting when the fault condition is removed. Substitute parts may be required due to inventory availability, lead time constraints, or specific application voltage requirements while maintaining compatible electrical and mechanical characteristics.

Substiute Parts

MF-PSML175/6-2

Bourns Inc.In Stock: 1047MF-PSML175/6-2 Datasheet

Current PartRFQ

MF-PSML175/12-2

Bourns Inc.In Stock: 3068MF-PSML175/12-2 Datasheet

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PTSLR08056V175

Eaton - Electronics DivisionIn Stock: 4464PTSLR08056V175 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MF-PSML175/6-2 are classified into two categories based on allowed electrical and mechanical parameters:

Upgrade Substitute (Voltage Upgrade): MF-PSML175/12-2 maintains identical hold current (1.75A), trip current (4.6A), package format (0805 Concave), and mounting type (Surface Mount) while increasing maximum voltage rating from 6V to 12V. This part is suitable for applications requiring higher voltage protection while preserving all other electrical characteristics.

Direct Equivalent (Same Voltage, Different Manufacturer): PTSLR08056V175 from Eaton - Electronics Division matches the 6V voltage rating and 1.75A hold current specification. Both parts share the same 0805 package format and surface mount configuration. This part provides functional equivalence from an alternative manufacturer source.

Substitution eligibility is determined by: (1) matching or exceeding voltage rating requirements, (2) identical or compatible hold current (Ih) and trip current (It) values, (3) identical package and mounting type, and (4) compatible operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

MF-PSML175/12-2 (Upgrade Substitute): Select this part when the application circuit operates at voltages up to 12V and requires the same 1.75A hold current protection. This upgrade maintains all electrical trip characteristics and thermal operating range. The part carries Active product status with expanded approval certifications (cUL, cURus, TUV). Use this substitute when higher voltage headroom is beneficial or when 6V-rated components are unavailable.

PTSLR08056V175 (Direct Equivalent): Select this part for 6V applications requiring an alternative manufacturer source. This Eaton component maintains identical voltage and current ratings with the same 0805 package footprint. Note that this part exhibits faster trip response (600 ms versus 1 s) and lower initial resistance (5 mOhms versus 10 mOhms), which may affect circuit behavior in timing-sensitive applications. Both parts carry equivalent compliance certifications (cURus, TUV) and ROHS3 compliance.

Selection should prioritize application voltage requirements first, then consider manufacturer availability and specific timing characteristics for the intended circuit function.

Frequently Asked Questions (FAQ)

Q: Can MF-PSML175/12-2 be used in place of MF-PSML175/6-2?

A: Yes, MF-PSML175/12-2 is a direct upgrade substitute. The 12V rating accommodates any circuit designed for 6V operation. All other electrical parameters (hold current, trip current, resistance characteristics) remain identical. The part occupies the same 0805 package footprint and mounting configuration.

Q: What are the key differences between MF-PSML175/6-2 and PTSLR08056V175?

A: Both parts share identical voltage (6V) and hold current (1.75A) ratings with the same 0805 package format. PTSLR08056V175 has faster trip response (600 ms versus 1 s) and lower initial resistance (5 mOhms versus 10 mOhms). Thickness differs slightly (0.88mm versus 0.70mm). These differences may impact circuit timing and power dissipation characteristics.

Q: Are all three parts mechanically compatible with the same PCB footprint?

A: MF-PSML175/6-2 and MF-PSML175/12-2 share identical dimensions (0.085" L x 0.053" W, 0.028" max thickness) and are fully interchangeable on the same footprint. PTSLR08056V175 has slightly different length (0.083" versus 0.085") and greater thickness (0.035" versus 0.028"), which may require footprint verification for tight PCB layouts.

Q: Do all substitute parts meet the same compliance requirements?

A: MF-PSML175/6-2 and PTSLR08056V175 both carry cURus and TUV certifications. MF-PSML175/12-2 includes additional cUL certification. All three parts are ROHS3 compliant and REACH unaffected. Compliance certifications are equivalent for standard applications.

Q: Which substitute should be selected for inventory availability?

A: Inventory levels are provided as reference data only. Part selection should be based on electrical requirements and application compatibility. Consult current distributor stock status for real-time availability of MF-PSML175/12-2 (upgrade) or PTSLR08056V175 (equivalent) when MF-PSML175/6-2 is unavailable.