BK/MDA-V-5 Equivalent & Substitute Parts

Part Overview

The BK/MDA-V-5 is a 5 A 250 V AC/DC ceramic cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 3AB and 3AG package formats. This part is classified as obsolete, which necessitates identification of active equivalent alternatives to maintain circuit protection functionality in existing designs and new production applications. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct interchangeability without circuit redesign.

Substiute Parts

BK/MDA-V-5

Eaton - Electronics DivisionIn Stock: 769BK/MDA-V-5 Datasheet

Current PartRFQ

BK/MDA-V-5-R

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

DirectRFQ

MDA-V-5-R

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDA-V-5 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Current Rating: 5 A (exact match)
• Voltage Rating (AC): 250 V (exact match)
• Response Time: Slow Blow (exact match)
• Breaking Capacity @ Rated Voltage: 200 A (exact match)

Mechanical Equivalence Requirements:

• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match)
• Mounting Type: Through Hole (exact match)
• Size / Dimension: 0.266" Dia x 1.292" L (6.76mm x 32.82mm) (exact match)

Functional Equivalence Requirements:

• Fuse Type: Cartridge, Ceramic (exact match)
• Manufacturer: Eaton - Electronics Division (same manufacturer)
• Series: MDA (same series)

All identified substitute parts meet these criteria and are classified as active products with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

BK/MDA-V-5-R and MDA-V-5-R are direct functional equivalents to the obsolete BK/MDA-V-5. Both substitute parts are manufactured by Eaton - Electronics Division within the MDA series and maintain identical electrical and mechanical specifications required for circuit protection applications.

Product Status Consideration: The BK/MDA-V-5 is obsolete. Both substitute parts are active products with current manufacturing availability, ensuring long-term supply chain reliability.

Compliance Advantage: The substitute parts BK/MDA-V-5-R and MDA-V-5-R are ROHS3 compliant, whereas the main part BK/MDA-V-5 is RoHS non-compliant. The substitute parts also carry expanded approval certifications (CE, CSA, UL) compared to the main part (CSA, UL).

Selection Between Substitutes: BK/MDA-V-5-R and MDA-V-5-R are electrically and mechanically identical. Selection between these two part numbers should be based on packaging requirements and internal inventory management protocols.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-V-5-R and MDA-V-5-R be used interchangeably with BK/MDA-V-5?

A: Yes. Both substitute parts maintain identical current rating (5 A), voltage rating (250 V AC), response time (Slow Blow), package format (3AB, 3AG, 1/4" x 1-1/4"), mounting type (Through Hole), and breaking capacity (200 A). All three parts are manufactured by Eaton - Electronics Division within the MDA series.

Q: What is the difference between BK/MDA-V-5-R and MDA-V-5-R?

A: Both parts are electrically and mechanically identical. The primary difference is packaging designation: BK/MDA-V-5-R is supplied in bulk packaging, while MDA-V-5-R is also supplied in bulk packaging. Both are active products with equivalent availability and compliance certifications.

Q: Why is the main part BK/MDA-V-5 classified as obsolete?

A: The BK/MDA-V-5 is no longer in active production. Eaton - Electronics Division has transitioned to the active MDA-V-5-R and BK/MDA-V-5-R variants, which offer improved RoHS3 compliance and expanded approval certifications.

Q: Are there any electrical performance differences between the main part and substitutes?

A: All three parts meet the same electrical specifications for circuit protection: 5 A current rating, 250 V AC voltage rating, 200 A breaking capacity, and slow-blow response time. DC cold resistance values are nominally equivalent (0.02355 Ohms vs. 0.023 Ohms), representing negligible operational difference.

Q: Can these fuses be used in both AC and DC applications?

A: The electrical ratings specify 250 V AC. DC application compatibility is determined by circuit design requirements and should be verified against the specific application voltage and current parameters.

Q: What approval certifications apply to the substitute parts?

A: BK/MDA-V-5-R and MDA-V-5-R carry CE, CSA, and UL approvals. The original BK/MDA-V-5 carries CSA and UL approvals. The expanded certification set on substitute parts provides broader regulatory compliance for international applications.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both BK/MDA-V-5-R and MDA-V-5-R are ROHS3 compliant. The original BK/MDA-V-5 is RoHS non-compliant. For applications requiring RoHS compliance, the substitute parts are required.