MDA-V-5-R Equivalent & Substitute Parts

Part Overview

The MDA-V-5-R is a 5 A, 250 V AC/DC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This through-hole mounted fuse operates with slow-blow response characteristics and is housed in a 3AB, 3AG package format (1/4" x 1-1/4" axial). The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct circuit board replacement without design modification.

Substiute Parts

MDA-V-5-R

Eaton - Electronics DivisionIn Stock: 851MDA-V-5-R Datasheet

Current PartRFQ

BK/MDA-V-5-R

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

DirectRFQ

0325005.HXP

Littelfuse Inc.In Stock: 10310325005.HXP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

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

Primary Electrical Criteria:

• Current Rating: 5 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Response Time: Slow Blow (exact match required)

Mechanical Criteria:

• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)

Compliance Criteria:

• Approval Agencies: Minimum CE, CSA, UL certification required
• RoHS Status: ROHS3 Compliant (exact match required)

Parts meeting all criteria above are classified as direct substitutes. Variations in breaking capacity, melting I²t, DC cold resistance, or operating temperature do not disqualify substitution when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

BK/MDA-V-5-R (Eaton - Electronics Division): This part is a direct manufacturer variant of the MDA-V-5-R. All electrical, mechanical, and compliance parameters are identical. Both parts carry Active product status and identical approval certifications (CE, CSA, UL). Selection between MDA-V-5-R and BK/MDA-V-5-R is based on inventory availability and procurement logistics, as no technical differentiation exists.

0325005.HXP (Littelfuse Inc.): This part meets all primary substitution criteria: 5 A current rating, 250 V AC voltage rating, slow-blow response, ceramic cartridge construction, 3AB/3AG package format, and through-hole mounting. All three parts maintain ROHS3 compliance and Active product status. The 0325005.HXP carries expanded approval certifications (CE, CSA, PSE, UL) and specified operating temperature range (-55°C ~ 125°C). Physical dimensions show minor variation (0.275" diameter vs. 0.266" diameter; 1.288" length vs. 1.292" length), remaining within standard tolerance for 3AB/3AG package specifications. Breaking capacity (400 A vs. 200 A) and melting I²t (25 vs. 65) differ but do not affect substitution eligibility for applications within rated specifications.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-V-5-R replace MDA-V-5-R in existing designs? A: Yes. BK/MDA-V-5-R is a direct equivalent with identical electrical ratings (5 A, 250 V AC), response characteristics (slow-blow), package format (3AB, 3AG, 1/4" x 1-1/4"), and certifications (CE, CSA, UL). No circuit modification is required.

Q: Is 0325005.HXP (Littelfuse) compatible with MDA-V-5-R applications? A: Yes. The 0325005.HXP meets all primary electrical and mechanical criteria: 5 A current rating, 250 V AC voltage rating, slow-blow response, ceramic cartridge type, and 3AB/3AG package format. Physical dimensions fall within standard tolerance for this package class. All three parts are ROHS3 compliant and carry required certifications.

Q: What are the physical dimension differences between these parts? A: MDA-V-5-R and BK/MDA-V-5-R are identical at 0.266" diameter x 1.292" length. The 0325005.HXP measures 0.275" diameter x 1.288" length. These variations remain within acceptable tolerance for 3AB/3AG package specifications and do not prevent mechanical interchangeability in standard fuse holders.

Q: Do differences in breaking capacity affect substitution? A: Breaking capacity (200 A for Eaton parts; 400 A for Littelfuse) represents the maximum fault current the fuse can safely interrupt. All three parts exceed typical circuit protection requirements at rated voltage. Selection is based on application fault current levels, not substitution eligibility.

Q: Why does 0325005.HXP have different melting I²t and DC cold resistance values? A: Melting I²t (25 vs. 65) and DC cold resistance (0.0522 vs. 0.023 Ohms) reflect manufacturing differences between Littelfuse and Eaton designs. These parameters do not disqualify substitution when primary electrical ratings and response characteristics align. Application-specific thermal or resistance requirements should be evaluated independently.

Q: Are all three parts suitable for CE, CSA, and UL-regulated applications? A: Yes. MDA-V-5-R and BK/MDA-V-5-R carry CE, CSA, and UL certifications. The 0325005.HXP carries CE, CSA, PSE, and UL certifications, providing expanded regulatory coverage. All three parts meet minimum certification requirements for standard industrial and consumer applications.