BK/MDL-V-3/10 Equivalent & Substitute Parts

Part Overview

The BK/MDL-V-3/10 is a 300 mA, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is classified as a Through Hole mounted fuse in the 3AB, 3AG package format with dimensions of 1/4" x 1-1/4" (6.76mm x 32.82mm). The part maintains Active product status with 756 units currently in stock.

Substitute parts are identified to address inventory availability, packaging preferences, or compliance requirements while maintaining electrical and mechanical compatibility within the specified parameter range.

Substiute Parts

BK/MDL-V-3/10

Eaton - Electronics DivisionIn Stock: 773BK/MDL-V-3/10 Datasheet

Current PartRFQ

BK/MDL-V-3/10-R

Eaton - Electronics DivisionIn Stock: 1094BK/MDL-V-3/10-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDL-V-3/10 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Current Rating: 300 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 35A (exact match required)
• Melting I²t: 0.412 (exact match required)

Mechanical Parameters:

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

Certification Parameters:

• Approval Agency: CSA, UL minimum requirement

The identified substitute part BK/MDL-V-3/10-R meets all electrical and mechanical equivalence criteria. Differences in packaging format (Bulk vs. standard) and RoHS compliance status do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

BK/MDL-V-3/10-R is electrically and mechanically equivalent to BK/MDL-V-3/10 across all critical fuse parameters. Selection between these parts is determined by secondary factors:

Inventory Availability: BK/MDL-V-3/10-R maintains higher stock levels (1007 units vs. 756 units), supporting supply chain continuity for high-volume applications.

Regulatory Compliance: BK/MDL-V-3/10-R carries CE certification in addition to CSA and UL approvals, meeting expanded international regulatory requirements. BK/MDL-V-3/10-R also achieves RoHS compliance, whereas BK/MDL-V-3/10 is RoHS non-compliant.

Packaging Format: BK/MDL-V-3/10-R is supplied in Bulk packaging, suitable for high-volume procurement and automated assembly processes. Standard packaging of BK/MDL-V-3/10 may be preferred for lower-volume or mixed-component orders.

DC Cold Resistance: BK/MDL-V-3/10-R exhibits lower DC cold resistance (2.046 Ohms vs. 2.3 Ohms), representing a minor variation within acceptable tolerance for fuse cartridge applications.

Both parts are Active products from Eaton - Electronics Division and are suitable for direct substitution in 250 V AC/DC circuits requiring 300 mA slow-blow protection.

Frequently Asked Questions (FAQ)

Q: Can BK/MDL-V-3/10-R be used as a direct replacement for BK/MDL-V-3/10?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current rating (300 mA), voltage rating (250 V AC), response time (Slow Blow), breaking capacity (35A), melting I²t (0.412), package format (3AB, 3AG), and physical dimensions (0.266" Dia x 1.292" L). Direct substitution in circuit applications is supported.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format (Bulk vs. Standard), regulatory compliance (RoHS Compliant vs. non-compliant), certification scope (CE added), and DC cold resistance (2.046 Ohms vs. 2.3 Ohms). Electrical and mechanical performance are identical.

Q: Does the RoHS compliance status affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical or mechanical function. Both parts perform identically in circuit applications.

Q: Are the certifications interchangeable?

A: BK/MDL-V-3/10-R carries additional CE certification beyond the CSA and UL approvals present on BK/MDL-V-3/10. Both meet or exceed the minimum certification requirement for this product category. Selection depends on regional regulatory requirements.

Q: Does the difference in DC cold resistance affect fuse operation?

A: No. The DC cold resistance values (2.3 Ohms vs. 2.046 Ohms) are within acceptable tolerance for fuse cartridge operation and do not affect trip characteristics or circuit protection performance.

Q: Which part should be selected for new designs?

A: Selection is based on supply chain requirements, regulatory jurisdiction, and packaging preferences. Both parts are Active and suitable for new designs. BK/MDL-V-3/10-R offers higher inventory availability and expanded certifications.