MF-PSML300-2 Equivalent & Substitute Parts

Part Overview

The MF-PSML300-2 is a Polymeric PTC Resettable Fuse manufactured by Bourns Inc., rated for 6V maximum voltage with 3A hold current in a surface mount 0805 (2012 Metric) package. This component is classified as Obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement.

PTC resettable fuses provide automatic overcurrent protection by increasing resistance when excessive current flows, then resetting when the fault condition clears. The obsolete status of the MF-PSML300-2 necessitates evaluation of active equivalent models to maintain supply chain continuity.

Substiute Parts

MF-PSML300-2

Bourns Inc.In Stock: 5800MF-PSML300-2 Datasheet

Current PartRFQ

MF-PSML300/6-2

Bourns Inc.In Stock: 2575MF-PSML300/6-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MF-PSML300-2 is determined by the following critical parameters:

• Voltage Rating (6V): The substitute must maintain the same maximum voltage specification to ensure circuit protection integrity.
• Current - Hold (Ih) (3A): The hold current rating must match to preserve the intended protection threshold.
• Package / Case (0805 2012 Metric, Concave): Physical and electrical footprint compatibility is required for PCB assembly without redesign.
• Mounting Type (Surface Mount): The substitute must be surface mount to maintain assembly compatibility.
• Operating Temperature Range (-40°C ~ 85°C): The thermal operating window must be equivalent or superior.
• Type (Polymeric): The PTC resettable fuse technology type must remain consistent.

The MF-PSML300/6-2 meets all these criteria as an active equivalent from the same manufacturer and series.

Parameter Comparison

Engineering Selection Recommendations

The MF-PSML300/6-2 is the direct equivalent for the obsolete MF-PSML300-2. Both components share identical electrical ratings (6V, 3A hold current), physical dimensions (0805 2012 Metric package), and thermal operating range (-40°C ~ 85°C). The MF-PSML300/6-2 carries Active product status, ensuring ongoing availability and manufacturer support.

Both parts maintain equivalent compliance certifications (cURus, TUV, ROHS3 Compliant, REACH Unaffected) and identical moisture sensitivity levels (MSL 2A). The primary distinction is packaging format: the MF-PSML300-2 is supplied in standard packaging, while the MF-PSML300/6-2 is available in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Selection of the MF-PSML300/6-2 eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with designs originally specified for the MF-PSML300-2.

Frequently Asked Questions (FAQ)

Q: Can the MF-PSML300/6-2 be used as a direct replacement for the MF-PSML300-2?

A: Yes. Both components have identical voltage ratings (6V), hold current (3A), package dimensions (0805 2012 Metric), and operating temperature range (-40°C ~ 85°C). No circuit redesign is required.

Q: What is the difference between the MF-PSML300-2 and MF-PSML300/6-2?

A: The primary difference is product status and packaging format. The MF-PSML300-2 is Obsolete, while the MF-PSML300/6-2 is Active. The MF-PSML300/6-2 is supplied in Tape & Reel (TR) format, standard for automated assembly. Electrical specifications are identical.

Q: Are there any thickness differences between these parts?

A: Yes. The MF-PSML300-2 has a maximum thickness of 0.032" (0.80mm), while the MF-PSML300/6-2 has a maximum thickness of 0.055" (1.40mm). Verify PCB clearance in your design if height-constrained applications are involved.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MF-PSML300-2 and MF-PSML300/6-2 are ROHS3 Compliant, REACH Unaffected, and certified by cURus and TUV. Both carry identical ECCN (EAR99) and HTSUS (8533.40.8070) classifications.

Q: What is the moisture sensitivity level for these components?

A: Both parts are rated MSL 2A (4 Weeks), indicating they require controlled storage conditions and have a 4-week floor life after moisture barrier bag opening.