MDA-V-3/4-R Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The MDA-V-3/4-R is a 750 mA ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC operation. This fuse is designed for through-hole mounting in 3AB and 3AG package configurations with slow-blow response characteristics. The part is currently active in production with 1049 pieces available in inventory.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits alternative sourcing while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

MDA-V-3/4-R

Eaton - Electronics DivisionIn Stock: 1119MDA-V-3/4-R Datasheet

Current PartRFQ

0325.750HXP

Littelfuse Inc.In Stock: 13200325.750HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA-V-3/4-R is determined by the following critical parameters:

Current Rating: 750 mA (exact match required)

Voltage Rating - AC: 250 V (exact match required)

Fuse Type: Cartridge, Ceramic (exact match required)

Response Time: Slow Blow (exact match required)

Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)

Mounting Type: Through Hole (exact match required)

Approval Agencies: CE, CSA, UL (all certifications must be present)

RoHS Status: ROHS3 Compliant (required)

The substitute part 0325.750HXP manufactured by Littelfuse Inc. meets all mandatory electrical and mechanical parameters. Additional parameters such as DC voltage rating, breaking capacity, melting I²t, operating temperature range, and DC cold resistance may vary between the main part and substitute without affecting AC circuit protection performance, provided the core parameters listed above remain identical.

Parameter Comparison

Engineering Selection Recommendations

Both the MDA-V-3/4-R and 0325.750HXP are active production parts with full regulatory compliance across CE, CSA, and UL approval agencies. Both parts are ROHS3 compliant and suitable for new designs and replacement applications.

Selection between these parts is based on availability and supply chain requirements. The MDA-V-3/4-R (Eaton) is the primary specification. The 0325.750HXP (Littelfuse) serves as a direct functional equivalent for AC 250 V circuits requiring 750 mA protection with slow-blow response.

Physical dimensions show minor variations within manufacturing tolerances. The 0325.750HXP exhibits higher breaking capacity and melting I²t values, indicating enhanced performance margins in fault conditions. The operating temperature range specification for the Littelfuse part provides additional environmental data not documented for the Eaton part.

Both parts are suitable for direct substitution in through-hole PCB applications and fuse holder assemblies rated for 3AB/3AG cartridge fuses.

Frequently Asked Questions (FAQ)

Q: Can the 0325.750HXP replace the MDA-V-3/4-R in all applications?

A: Yes, for AC 250 V circuits. Both parts share identical current rating (750 mA), voltage rating (250 V AC), fuse type (ceramic cartridge), response time (slow blow), package configuration (3AB, 3AG, 1/4" x 1-1/4"), and mounting type (through hole). All required regulatory approvals (CE, CSA, UL) and RoHS3 compliance are present on both parts.

Q: What are the physical dimension differences?

A: The MDA-V-3/4-R measures 0.266" diameter x 1.292" length (6.76mm x 32.82mm). The 0325.750HXP measures 0.275" diameter x 1.288" length (6.99mm x 32.72mm). These variations are within standard manufacturing tolerances for 3AB/3AG cartridge fuses and do not affect mechanical fit in standard fuse holders.

Q: Are there DC voltage considerations?

A: The MDA-V-3/4-R is specified for 250 V AC operation. The 0325.750HXP is rated for 250 V AC and 125 V DC. For DC applications, only the 0325.750HXP is suitable. For AC-only circuits, both parts are equivalent.

Q: What is the significance of the different melting I²t values?

A: The MDA-V-3/4-R has a melting I²t of 0.42, while the 0325.750HXP has 7. Both values are within the slow-blow fuse classification. The higher I²t value of the Littelfuse part indicates greater thermal capacity before melting, providing enhanced tolerance for transient current surges in the same 750 mA rating class.

Q: Are both parts suitable for new designs?

A: Yes. Both the MDA-V-3/4-R and 0325.750HXP are active production parts with current availability. Either part is acceptable for new circuit designs requiring 750 mA, 250 V AC ceramic cartridge fuse protection with slow-blow response.

Q: What certifications apply to both parts?

A: Both parts carry CE, CSA, and UL approvals. Both are ROHS3 compliant. These certifications confirm suitability for industrial, commercial, and consumer electronic applications within their rated specifications.