Equivalent & Substitute Parts for BK/MDA-BV-20-R

Part Overview

The BK/MDA-BV-20-R is a 20 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. Manufactured by Eaton - Electronics Division, this through-hole component is designed for slow-blow response characteristics and is classified as Active product status. The fuse is housed in a 3AB/3AG package format with dimensions of 0.266" diameter by 1.292" length. Finding equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

BK/MDA-BV-20-R

Eaton - Electronics DivisionIn Stock: 1125BK/MDA-BV-20-R Datasheet

Current PartRFQ

BK/MDA-V-20-R

Eaton - Electronics DivisionIn Stock: 1971BK/MDA-V-20-R Datasheet

Parametric EquivalentRFQ

MDA-V-20-R

Eaton - Electronics DivisionIn Stock: 940MDA-V-20-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/MDA-BV-20-R are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following criteria:

Electrical Parameters (Must Match Exactly):

• Current Rating: 20 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 125 V
• Response Time: Slow Blow
• Breaking Capacity @ Rated Voltage: 1.5 kA AC, 10 kA DC
• Melting I²t: 483.45
• DC Cold Resistance: 0.004 Ohms

Mechanical Parameters (Must Match Exactly):

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

Compliance Parameters:

• RoHS Status: ROHS3 Compliant

All identified substitute parts meet these criteria without exception. Substitutes differ only in manufacturer part number designation and approval agency certifications.

Parameter Comparison

Engineering Selection Recommendations

All three part numbers are Active products manufactured by Eaton - Electronics Division and are fully equivalent in electrical and mechanical specifications. Selection between BK/MDA-BV-20-R, BK/MDA-V-20-R, and MDA-V-20-R is determined by approval agency requirements and supply chain availability.

BK/MDA-BV-20-R carries CSA and UR certifications. This part number is suitable for applications requiring these specific regulatory approvals.

BK/MDA-V-20-R carries CE, CSA, and UL certifications, providing broader regulatory coverage. This part number is suitable for applications requiring UL certification or CE marking compliance.

MDA-V-20-R carries CE, CSA, and UL certifications, identical to BK/MDA-V-20-R. This part number represents an alternative designation for the same component with equivalent certifications.

All three parts are ROHS3 compliant and suitable for direct substitution in 20 A, 250 V AC / 125 V DC slow-blow ceramic cartridge fuse applications with 3AB/3AG through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-V-20-R be used as a direct replacement for BK/MDA-BV-20-R?

A: Yes. Both parts are electrically and mechanically identical with matching current ratings (20 A), voltage ratings (250 V AC / 125 V DC), response time (Slow Blow), package format (3AB, 3AG, 1/4" x 1-1/4"), and breaking capacity (1.5 kA AC, 10 kA DC). The difference lies in approval agency certifications. BK/MDA-V-20-R includes UL and CE certifications in addition to CSA.

Q: What is the difference between BK/MDA-V-20-R and MDA-V-20-R?

A: Both part numbers are manufactured by Eaton - Electronics Division and carry identical electrical, mechanical, and certification specifications. The difference is in the part number designation format. Both are suitable for direct substitution in applications requiring 20 A ceramic cartridge fuses with 250 V AC / 125 V DC ratings.

Q: Are all three parts compatible with 3AB/3AG fuse holders?

A: Yes. All three parts conform to the 3AB, 3AG, 1/4" x 1-1/4" (Axial) package specification with identical physical dimensions of 0.266" diameter by 1.292" length. They are mechanically compatible with standard 3AB/3AG through-hole fuse holders.

Q: What approval agencies certify these fuses?

A: BK/MDA-BV-20-R is certified by CSA and UR. BK/MDA-V-20-R and MDA-V-20-R are certified by CE, CSA, and UL. Selection depends on regulatory requirements for your application.

Q: Do these fuses have identical melting characteristics?

A: Yes. All three parts have identical melting I²t values of 483.45 and DC cold resistance of 0.004 Ohms, ensuring identical thermal response and protection characteristics.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions.