MF-SM075-2-006 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The MF-SM075-2-006 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-SM series. This component provides overcurrent protection with automatic recovery capability in surface mount applications. The part is active in production with AEC-Q200 automotive-grade qualification and full RoHS3 compliance. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and regulatory certifications to ensure direct functional equivalence in circuit design.

Substiute Parts

MF-SM075-2-006

Bourns Inc.In Stock: 1219MF-SM075-2-006 Datasheet

Current PartRFQ

MF-SM075-2

Bourns Inc.In Stock: 6160MF-SM075-2 Datasheet

Parametric EquivalentRFQ

PFSM.075.2

SCHURTER Inc.In Stock: 1574PFSM.075.2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MF-SM075-2-006 are qualified based on the following criteria:

Electrical Parameter Matching:

• Voltage rating: 30V maximum
• Hold current (Ih): 750 mA maximum
• Trip current (It): 1.5 A
• Time to trip: 300 ms
• Initial resistance (Ri): 230 mOhms minimum
• Post-trip resistance (R1): 1 Ohm maximum
• Operating temperature range: -40°C to 85°C

Mechanical & Package Compatibility:

• Mounting type: Surface mount
• Package type: 2-SMD
• Physical dimensions compatible with 0.287" L x 0.214" W footprint
• Thickness: 0.125" maximum

Regulatory & Compliance Requirements:

• AEC-Q200 automotive qualification
• cURus and TUV approval
• RoHS3 compliance
• REACH unaffected status

Parameter Comparison

Engineering Selection Recommendations

MF-SM075-2 (Bourns Inc.): This part is a parametric equivalent to the MF-SM075-2-006, differing only in packaging format (Cut Tape & Digi-Reel versus standard packaging). All electrical specifications, mechanical dimensions, and regulatory certifications are identical. This substitute is suitable for applications where packaging format flexibility is acceptable. Higher inventory availability (6100 pcs) may support supply chain requirements.

PFSM.075.2 (SCHURTER Inc.): This part meets all electrical and mechanical specifications with minor dimensional variance (0.289" L versus 0.287" L, a 0.02" difference within typical PCB layout tolerances). The PFSM.075.2 maintains AEC-Q200 qualification and cURus/TUV approval. Packaging is supplied as Tape & Reel format. This substitute is suitable for applications where cross-manufacturer sourcing is acceptable and dimensional tolerance of ±0.02" is within design margins.

Both substitutes maintain active production status and full regulatory compliance, ensuring long-term availability and design reliability.

Frequently Asked Questions (FAQ)

Q: Can MF-SM075-2 be used as a direct replacement for MF-SM075-2-006?

A: Yes. Both parts are manufactured by Bourns Inc. and share identical electrical specifications, mechanical dimensions, operating temperature range, and regulatory certifications. The difference is packaging format only. Verify that your assembly process accommodates the packaging type (Cut Tape & Digi-Reel for MF-SM075-2).

Q: What is the dimensional difference between MF-SM075-2-006 and PFSM.075.2?

A: The length differs by 0.02" (7.31mm versus 7.36mm). Width and thickness are identical. This dimensional variance is typical in cross-manufacturer sourcing and falls within standard PCB layout tolerances. Confirm that your PCB footprint accommodates this tolerance before design implementation.

Q: Are all three parts AEC-Q200 qualified?

A: Yes. MF-SM075-2-006, MF-SM075-2, and PFSM.075.2 all carry AEC-Q200 automotive-grade qualification and cURus/TUV approval, making them suitable for automotive and industrial applications requiring this certification level.

Q: What is the difference in Moisture Sensitivity Level (MSL) between the Bourns and SCHURTER parts?

A: MF-SM075-2-006 and MF-SM075-2 are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. PFSM.075.2 is listed as Not Applicable for MSL. Both ratings indicate minimal or no moisture-related handling constraints during assembly and storage.

Q: Can I mix these parts in the same production run?

A: All three parts meet identical electrical specifications and regulatory requirements. However, verify that your assembly process and PCB footprint accommodate the minor dimensional variance (0.02" length difference for PFSM.075.2) and packaging format differences before mixing parts in production.

Q: Which substitute offers the best inventory availability?

A: MF-SM075-2 (Bourns) offers 6100 pcs in stock, compared to 1502 pcs for PFSM.075.2 (SCHURTER) and 1133 pcs for the original MF-SM075-2-006. Inventory levels should be verified with your supplier for current availability.