5MTP 2-R Equivalent & Substitute Parts

Part Overview

The 5MTP 2-R is a 2A 250VAC glass cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 5mm x 20mm form factor applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, repair, and redesign efforts. Substitute parts must maintain identical electrical performance characteristics and mechanical compatibility to ensure reliable circuit protection without design modification.

Substiute Parts

5MTP 2-R

Bel Fuse Inc.In Stock: 9915MTP 2-R Datasheet

Current PartRFQ

0234002.MXEP

Littelfuse Inc.In Stock: 8080234002.MXEP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5MTP 2-R is determined by strict equivalence across the following critical parameters:

• Current Rating: Must be exactly 2 A
• Voltage Rating (AC): Must be exactly 250 V
• Fuse Type: Must be Cartridge, Glass
• Package / Case: Must be 5mm x 20mm (Axial)
• Mounting Type: Must be Through Hole
• Response Time: Must be Medium Blow
• Breaking Capacity: Must be 100A at rated voltage
• Operating Temperature Range: Must support -55°C ~ 125°C

The substitute part 0234002.MXEP (Littelfuse Inc., Series 234) meets all mandatory electrical and mechanical criteria for direct substitution. Both components are RoHS3 compliant and REACH unaffected, ensuring regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The 0234002.MXEP from Littelfuse Inc. is a direct functional equivalent to the obsolete 5MTP 2-R. Both components satisfy identical electrical specifications and mechanical form factors required for through-hole circuit protection applications at 2A 250VAC.

The substitute part carries active product status, ensuring continued availability and supply chain reliability. Littelfuse certification includes CE, CSA, K-MARK, PSE, and UL approvals, providing broader regulatory coverage than the original component. Both parts maintain RoHS3 compliance and REACH unaffected status, supporting environmental and regulatory requirements.

Physical dimensions show minor variation (0.228" Dia x 0.886" L for the substitute versus 0.217" Dia x 0.827" L for the original), which remains within acceptable mechanical tolerance for standard through-hole fuse holders. DC cold resistance differs slightly (0.0684 Ohms versus 0.055 Ohms), reflecting normal manufacturing variation between suppliers while maintaining functional equivalence in circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can the 0234002.MXEP replace the 5MTP 2-R in existing designs?

A: Yes. Both components share identical current rating (2A), voltage rating (250VAC), fuse type (cartridge glass), package dimensions (5mm x 20mm axial), and response characteristics (medium blow). Physical dimensions are compatible with standard through-hole fuse holders.

Q: What is the significance of the product status difference?

A: The 5MTP 2-R is obsolete, meaning Bel Fuse Inc. no longer manufactures or supports this component. The 0234002.MXEP maintains active status, ensuring ongoing availability, technical support, and supply chain continuity for new production and field replacements.

Q: Are there regulatory compliance differences between these parts?

A: Both components are RoHS3 compliant and REACH unaffected. The substitute carries additional certifications (K-MARK and UL) beyond the original part's approvals (CE, CSA, cULus, PSE), providing enhanced regulatory coverage for international applications.

Q: How do the melting I²t values differ, and does this affect substitution?

A: The original part specifies 20 A²s melting I²t, while the substitute specifies 9.97 A²s. Both values fall within the medium-blow response classification and maintain the same 100A breaking capacity at rated voltage. This variation reflects normal manufacturing differences between suppliers and does not compromise functional equivalence for circuit protection applications.

Q: Will the slight dimensional variation cause mechanical compatibility issues?

A: No. The substitute dimensions (0.228" Dia x 0.886" L) differ minimally from the original (0.217" Dia x 0.827" L). Standard through-hole fuse holders accommodate this variation without modification or adjustment.