5MFP 2 Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The 5MFP 2 is a 2A 250VAC glass cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 5mm x 20mm form factor. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The fuse provides fast-blow response characteristics suitable for general circuit protection applications requiring 2A current rating at 250V AC/DC.

Substiute Parts

5MFP 2

Bel Fuse Inc.In Stock: 8555MFP 2 Datasheet

Current PartRFQ

5MFP 2-R

Bel Fuse Inc.In Stock: 27435MFP 2-R Datasheet

DirectRFQ

5SFP 2-R

Bel Fuse Inc.In Stock: 20765SFP 2-R Datasheet

Parametric EquivalentRFQ

0217002.MXEP

Littelfuse Inc.In Stock: 22060217002.MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5MFP 2 is determined by the following critical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed meet these core electrical and mechanical requirements. Variations in breaking capacity, melting I²t, DC cold resistance, and physical dimensions are secondary parameters that may differ between substitutes while maintaining functional equivalence for the specified application.

Parameter Comparison

Engineering Selection Recommendations

5MFP 2-R (Bel Fuse Inc.) is the direct equivalent substitute. It maintains identical electrical specifications, breaking capacity, and melting I²t characteristics as the original 5MFP 2. The primary advantage is active product status with ROHS3 compliance and improved availability (2672 pcs in stock). This part is the preferred choice for direct replacement in existing designs.

5SFP 2-R (Bel Fuse Inc.) is a parametric equivalent meeting all core electrical and mechanical requirements. It differs in breaking capacity (35A vs 200A) and melting I²t (6.4 vs 4.4), with lower DC cold resistance (0.036 Ohms). This part is suitable for applications where the lower breaking capacity is acceptable and provides broader international certifications (CCC, IMQ, SEMKO, VDE).

0217002.MXEP (Littelfuse Inc.) is a similar substitute from an alternative manufacturer. Physical dimensions differ slightly (5.80mm x 22.50mm vs 5.50mm x 21.00mm), requiring verification of PCB footprint compatibility. Breaking capacity and melting I²t fall between the Bel Fuse options. This part offers the broadest certification coverage (BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, VDE) and is suitable for applications requiring multi-regional compliance.

All substitute parts are ROHS3 compliant and REACH unaffected, addressing environmental compliance requirements absent in the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can 5MFP 2-R be used as a direct replacement for 5MFP 2?

A: Yes. The 5MFP 2-R maintains identical current rating (2A), voltage rating (250V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm), and operating temperature range (-55°C ~ 125°C). The primary difference is product status (active vs obsolete) and RoHS compliance.

Q: What is the difference between 5MFP 2-R and 5SFP 2-R?

A: Both parts meet the core electrical requirements (2A, 250V AC, fast blow, 5mm x 20mm). The 5SFP 2-R has a lower breaking capacity (35A vs 200A) and different melting I²t (6.4 vs 4.4). Selection depends on the specific breaking capacity requirement of the application. The 5SFP 2-R provides broader international certifications.

Q: Can 0217002.MXEP be used in place of Bel Fuse parts?

A: The 0217002.MXEP meets all core electrical specifications (2A, 250V AC, fast blow, through-hole mounting). Physical dimensions differ slightly (5.80mm x 22.50mm vs 5.50mm x 21.00mm). PCB footprint compatibility must be verified before substitution. This part is suitable for applications requiring Littelfuse sourcing or multi-regional certifications.

Q: Are there any compliance differences between these substitutes?

A: The original 5MFP 2 is RoHS non-compliant. All substitutes (5MFP 2-R, 5SFP 2-R, 0217002.MXEP) are ROHS3 compliant. The 0217002.MXEP offers the broadest certification coverage including BSI, CCC, KC, and UR in addition to CE, CSA, PSE, SEMKO, and VDE.

Q: Which substitute should be selected for new designs?

A: For designs requiring Bel Fuse sourcing, use 5MFP 2-R. For designs requiring alternative manufacturer options or broader international certifications, use 0217002.MXEP. Selection of 5SFP 2-R is appropriate when the lower breaking capacity (35A) meets application requirements and broader certifications are beneficial.