5MFP 100 Equivalent & Substitute Parts

Part Overview

The 5MFP 100 is a 100 mA, 250 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm axial through-hole package manufactured by Bel Fuse Inc. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The fuse is designed for circuit protection applications requiring fast response characteristics and is approved by CE, CSA, and UL standards.

Substiute Parts

5MFP 100

Bel Fuse Inc.In Stock: 11865MFP 100 Datasheet

Current PartRFQ

0217.100MXEP

Littelfuse Inc.In Stock: 11530217.100MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5MFP 100 are identified based on the following critical parameters that must match or exceed the original specification:

• Current Rating: 100 mA (exact match required)
• Voltage Rating (AC): 250 V (minimum requirement)
• Fuse Type: Cartridge, Glass (functional equivalence)
• Response Time: Fast Blow (protection characteristic)
• Mounting Type: Through Hole (mechanical compatibility)
• Operating Temperature Range: -55°C ~ 125°C (environmental compatibility)
• Package / Case: 5mm x 20mm nominal dimensions (physical fit)

The 0217.100MXEP from Littelfuse Inc. meets these substitution criteria with identical electrical ratings and compatible mechanical specifications. This part is currently in active production status, ensuring long-term availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The 0217.100MXEP is the direct functional equivalent for the obsolete 5MFP 100. Both parts share identical electrical characteristics (100 mA, 250 V AC/DC, fast-blow response) and compatible mechanical specifications (5mm x 20mm through-hole package).

The 0217.100MXEP offers additional advantages for new designs and ongoing applications:

• Active production status ensures continuous availability
• ROHS3 compliance supports modern regulatory requirements
• Extended approval certifications (CCC, K-MARK, SEMKO, VDE) provide broader market acceptance
• Higher breaking capacity (35A vs. 200A) and melting I²t rating (0.0045 vs. 0.0009) indicate robust performance characteristics

For applications currently using the 5MFP 100, direct substitution with the 0217.100MXEP is electrically and mechanically valid. Physical dimensions show minor variations (0.236" Dia x 0.886" L vs. 0.217" Dia x 0.827" L), which remain within acceptable tolerances for standard through-hole fuse holders.

Frequently Asked Questions (FAQ)

Q: Can the 0217.100MXEP directly replace the 5MFP 100 in existing applications?

A: Yes. Both parts have identical current ratings (100 mA), voltage ratings (250 V AC), fuse type (cartridge glass), response time (fast blow), and operating temperature range (-55°C ~ 125°C). The through-hole mounting and 5mm x 20mm package dimensions are compatible with standard fuse holders.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), and regulatory certifications. The 0217.100MXEP includes additional approvals (CCC, K-MARK, SEMKO, VDE) and has different electrical characteristics in breaking capacity and melting I²t values, though both meet the 100 mA, 250 V specification.

Q: Are there physical dimension differences that could affect installation?

A: Minor dimensional variations exist. The 5MFP 100 measures 0.217" Dia x 0.827" L, while the 0217.100MXEP measures 0.236" Dia x 0.886" L. These differences remain within acceptable tolerances for standard through-hole fuse holders and do not prevent direct substitution.

Q: Which part should be selected for new designs?

A: The 0217.100MXEP is the appropriate choice for new designs due to its active production status, ROHS3 compliance, and broader regulatory certifications. The 5MFP 100 is obsolete and should not be specified for new applications.

Q: Are both parts suitable for the same voltage and current applications?

A: Yes. Both parts are rated for 100 mA at 250 V AC/DC with fast-blow response characteristics, making them functionally equivalent for circuit protection in applications within these electrical parameters.