BK/MDA-V-5-R Equivalent & Substitute Parts

Part Overview

The BK/MDA-V-5-R is a 5A 250VAC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This through-hole mounted fuse is designed for general-purpose circuit protection applications requiring slow-blow response characteristics. The part is currently active in production with 1171 pieces in stock. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits cross-manufacturer sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

BK/MDA-V-5-R

Eaton - Electronics DivisionIn Stock: 1249BK/MDA-V-5-R Datasheet

Current PartRFQ

0325005.HXP

Littelfuse Inc.In Stock: 10310325005.HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDA-V-5-R is determined by strict alignment of the following parameters:

Mandatory Matching Parameters:

• Current Rating: 5 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole

Compliance Parameters:

• RoHS3 Compliance required
• Regulatory approvals must include CE, CSA, and UL

The substitute part 0325005.HXP (Littelfuse Inc., Series 325) meets all mandatory matching parameters and compliance requirements, establishing it as a valid equivalent for the BK/MDA-V-5-R in applications where cross-manufacturer sourcing is permitted.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - BK/MDA-V-5-R (Eaton - Electronics Division):

• Active product status with established supply (1171 pieces in stock)
• Meets all regulatory requirements: CE, CSA, UL certifications
• ROHS3 compliant for environmental standards
• Established performance baseline with 200A breaking capacity and 65 melting I²t

Equivalent Alternative - 0325005.HXP (Littelfuse Inc.):

• Active product status with available inventory (927 pieces in stock)
• Meets all regulatory requirements: CE, CSA, PSE, UL certifications
• ROHS3 compliant for environmental standards
• Higher breaking capacity (400A) provides enhanced fault protection margin
• Lower melting I²t (25) indicates faster thermal response under fault conditions
• Dimensional variation within acceptable tolerance for 3AB/3AG package standard
• Higher DC cold resistance (0.0522 Ohms vs. 0.023 Ohms) is acceptable for cartridge fuse applications

Both parts are suitable for direct substitution in applications where the electrical and mechanical parameters align with circuit protection requirements. Selection between manufacturers should be based on availability, supply chain strategy, and design validation protocols established for the end application.

Frequently Asked Questions (FAQ)

Q: Can the 0325005.HXP (Littelfuse) be used as a direct replacement for BK/MDA-V-5-R (Eaton)?

A: Yes. Both parts share identical current rating (5A), voltage rating (250VAC), fuse type (ceramic cartridge), response time (slow blow), and package specification (3AB, 3AG, 1/4" x 1-1/4" axial). Both are ROHS3 compliant and hold CE, CSA, and UL certifications. Physical fit and electrical function are compatible for through-hole mounting applications.

Q: What are the differences in breaking capacity between these parts?

A: The Littelfuse 0325005.HXP has a breaking capacity of 400A compared to the Eaton BK/MDA-V-5-R at 200A. This difference reflects manufacturer design approaches but does not affect substitution eligibility, as both exceed typical circuit protection requirements for 5A rated applications.

Q: Why is the melting I²t different between the two parts?

A: Melting I²t (65 for Eaton vs. 25 for Littelfuse) reflects different thermal mass and element design. The Littelfuse part exhibits faster thermal response. Both values are within acceptable ranges for slow-blow ceramic cartridge fuses and do not preclude substitution in standard applications.

Q: Are the dimensional differences significant?

A: Dimensional variations (0.266" vs. 0.275" diameter; 1.292" vs. 1.288" length) are within normal manufacturing tolerance for the 3AB/3AG package standard. Both parts fit standard fuse holders designed for this package specification.

Q: What compliance certifications are required for substitution?

A: Both parts hold CE, CSA, and UL certifications, meeting standard regulatory requirements for ceramic cartridge fuses in industrial and commercial applications. The Littelfuse part additionally holds PSE certification, which does not conflict with substitution eligibility.

Q: Can these parts be used interchangeably in existing designs without re-qualification?

A: Substitution is electrically and mechanically compatible based on matching parameters. Design validation protocols and qualification requirements are determined by the end-application standards and customer specifications, not by the parts themselves.