Equivalent & Substitute Parts for BK/MDA-6-R Ceramic Fuse

Part Overview

The BK/MDA-6-R is a ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 6 A at 250 V AC/DC with slow-blow response characteristics. This fuse is designed for use in 3AB and 3AG holders and requires an external mounting assembly. The part maintains active product status with 794 units currently in stock. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and compatibility with existing holder assemblies in applications requiring identical electrical and mechanical specifications.

Substiute Parts

BK/MDA-6-R

Eaton - Electronics DivisionIn Stock: 805BK/MDA-6-R Datasheet

Current PartRFQ

MDA-6-R

Eaton - Electronics DivisionIn Stock: 828MDA-6-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDA-6-R is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Current Rating: 6 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 200 A (exact match required)
• Melting I²t: 98 (exact match required)
• DC Cold Resistance: 0.018 Ohms (exact match required)

Mechanical Parameters:

• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L / 6.35mm x 31.75mm (exact match required)

Compliance Parameters:

• Approval Agencies: CE, CSA, UL (all certifications must be present)
• RoHS Status: ROHS3 Compliant (exact match required)

Only parts meeting all specified parameters across electrical, mechanical, and compliance categories qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The MDA-6-R substitute part demonstrates complete parametric equivalence to the BK/MDA-6-R across all electrical, mechanical, and compliance specifications. Both parts are manufactured by Eaton - Electronics Division within the MDA series and maintain active product status. Both parts carry identical certifications (CE, CSA, UL) and comply with ROHS3 requirements. The substitute part is available with 720 units in stock, providing supply chain flexibility. Selection between these parts may be based on inventory availability and procurement lead times, as no technical differentiation exists between them.

Frequently Asked Questions (FAQ)

Q: Can the MDA-6-R substitute for the BK/MDA-6-R in all applications?

A: Yes. The MDA-6-R meets all electrical, mechanical, and compliance parameters specified for the BK/MDA-6-R. Both parts are rated for 6 A at 250 V AC/DC, feature identical slow-blow response characteristics, and are certified by CE, CSA, and UL. Physical dimensions and holder compatibility (3AB, 3AG) are identical.

Q: Are there any differences in holder compatibility?

A: No. Both the BK/MDA-6-R and MDA-6-R are designed for 3AB and 3AG holders with identical physical dimensions of 0.250" diameter by 1.250" length (6.35mm x 31.75mm). Direct mechanical interchangeability is confirmed.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both parts carry CE, CSA, and UL certifications and comply with ROHS3 requirements. No compliance differences exist between the two parts.

Q: What is the basis for substitution eligibility?

A: Substitution is based on exact equivalence across current rating (6 A), voltage rating (250 V AC), response time (slow blow), breaking capacity (200 A), melting I²t (98), DC cold resistance (0.018 Ohms), fuse type (cartridge ceramic), package specification (3AB, 3AG, 1/4" x 1-1/4"), and all compliance certifications.

Q: Are there inventory considerations when selecting between these parts?

A: The BK/MDA-6-R has 794 units in stock, while the MDA-6-R has 720 units in stock. Both parts maintain active product status. Selection may be influenced by immediate availability requirements and procurement timelines.