5MT 750-R Equivalent & Substitute Parts

Part Overview

The 5MT 750-R is a 750 mA, 250 V AC/DC glass cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm package format. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design and maintenance applications. The medium blow response time and cartridge design with holder requirement define its operational characteristics in circuit protection applications.

Substiute Parts

5MT 750-R

Bel Fuse Inc.In Stock: 9705MT 750-R Datasheet

Current PartRFQ

BK/GMC-750-R

Eaton - Electronics DivisionIn Stock: 1277BK/GMC-750-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5MT 750-R is determined by strict equivalence across the following parameters:

• Current Rating: 750 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Response Time: Medium Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 35A (exact match required)
• Mounting Type: Requires Holder (exact match required)

The BK/GMC-750-R manufactured by Eaton - Electronics Division meets all substitution criteria and is classified as an active product, making it a direct equivalent for the obsolete 5MT 750-R.

Parameter Comparison

Engineering Selection Recommendations

The BK/GMC-750-R is the direct equivalent for the 5MT 750-R based on identical electrical and mechanical specifications across all critical substitution parameters. The Eaton part carries active product status, ensuring ongoing availability and supply chain continuity. Both components maintain ROHS3 compliance and hold recognized regulatory certifications (CSA, UL). The BK/GMC-750-R is suitable for direct replacement in applications currently using the 5MT 750-R.

Frequently Asked Questions (FAQ)

Q: Can the BK/GMC-750-R be used as a direct replacement for the 5MT 750-R?

A: Yes. Both parts share identical current rating (750 mA), voltage rating (250 V AC), fuse type (cartridge, glass), package dimensions (5mm x 20mm), response time (medium blow), and breaking capacity (35A). The BK/GMC-750-R is an active product, making it suitable for direct substitution.

Q: Are there differences in electrical characteristics between these parts?

A: The parts differ in DC cold resistance (0.296 Ohms vs. 0.213 Ohms) and melting I²t values (2.3 vs. 0.85). These variations do not affect substitution eligibility, as both parts meet the same functional requirements for the 750 mA, 250 V AC/DC application.

Q: What certifications apply to the substitute part?

A: The BK/GMC-750-R holds CSA, KC-MARK, and UL certifications. The original 5MT 750-R carries CE, CSA, and cULus certifications. Both parts are ROHS3 compliant and REACH unaffected.

Q: Does the substitute part require the same holder?

A: Yes. Both the 5MT 750-R and BK/GMC-750-R are cartridge fuses requiring a holder and share identical 5mm x 20mm package dimensions, ensuring mechanical compatibility with existing holder installations.