5MF 80-R Equivalent & Substitute Parts

Part Overview

The 5MF 80-R is an 80 mA, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm package format. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component procurement. Substitute parts must maintain identical electrical ratings and mechanical compatibility with existing fuse holder installations.

Substiute Parts

5MF 80-R

Bel Fuse Inc.In Stock: 8655MF 80-R Datasheet

Current PartRFQ

0217.080HXP

Littelfuse Inc.In Stock: 8360217.080HXP Datasheet

SimilarRFQ

GDB-80MA

Eaton - Electronics DivisionIn Stock: 1032GDB-80MA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5MF 80-R is determined by strict equivalence across the following parameters:

• Current Rating: 80 mA (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)
• Package Dimensions: 5mm x 20mm (exact match required)
• Mounting Configuration: Requires Holder (exact match required)

All identified substitute parts meet these criteria and are therefore mechanically and electrically interchangeable with the 5MF 80-R in applications requiring a 5mm x 20mm glass cartridge fuse rated at 80 mA and 250 V AC.

Parameter Comparison

Engineering Selection Recommendations

The 0217.080HXP (Littelfuse Inc., Series 217) and GDB-80MA (Eaton Electronics Division, Series GDB) are direct functional equivalents to the obsolete 5MF 80-R. Both substitute parts are currently in active production status and carry ROHS3 compliance certification.

The 0217.080HXP offers the broadest regulatory approval coverage, including CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications. This part is suitable for applications requiring multi-regional compliance documentation.

The GDB-80MA is available from Eaton and provides an alternative sourcing option. Regulatory approval information for this part is not fully specified in available documentation.

Both substitute parts are supplied in bulk packaging and maintain full mechanical and electrical compatibility with the 5mm x 20mm fuse holder interface.

Frequently Asked Questions (FAQ)

Q: Can the 0217.080HXP or GDB-80MA be used as direct replacements for the 5MF 80-R?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current ratings (80 mA), voltage ratings (250 V AC), fuse type (cartridge, glass), response time (fast blow), and package dimensions (5mm x 20mm). All three parts require a compatible fuse holder for installation.

Q: What is the difference between the substitute parts?

A: The primary differences are manufacturer identity and regulatory certifications. The 0217.080HXP carries broader international approvals (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE), while the GDB-80MA is sourced from Eaton. Both are active production items with current availability.

Q: Are there any electrical performance differences between these parts?

A: All three parts meet the core electrical specifications for 80 mA, 250 V AC/DC operation. Secondary parameters such as breaking capacity and melting I²t values vary slightly between manufacturers but do not affect functional interchangeability in standard applications.

Q: What fuse holder is required for installation?

A: Any standard 5mm x 20mm fuse holder is compatible with all three parts. Verify that your existing holder matches these dimensions before installation.

Q: Is the 5MF 80-R still available for purchase?

A: The 5MF 80-R is classified as obsolete. The 0217.080HXP and GDB-80MA are recommended as active production alternatives with current inventory availability.