Equivalent & Substitute Parts for BK/MDQ-8/10

Part Overview

The BK/MDQ-8/10 is an 800 mA, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for applications requiring overcurrent protection in circuits rated up to 250 V AC. The component requires a compatible holder (3AB, 3AG format) for installation and operates with a 1/4" x 1-1/4" form factor.

The BK/MDQ-8/10 maintains active product status with 1097 pieces in current inventory. Equivalent substitute parts are available from multiple manufacturers, providing options for procurement flexibility, compliance requirements, or supply chain continuity.

Substiute Parts

BK/MDQ-8/10

Eaton - Electronics DivisionIn Stock: 1195BK/MDQ-8/10 Datasheet

Current PartRFQ

BK/MDL-8/10-R

Eaton - Electronics DivisionIn Stock: 1477BK/MDL-8/10-R Datasheet

Parametric EquivalentRFQ

0034.5224

SCHURTER Inc.In Stock: 8660034.5224 Datasheet

Parametric EquivalentRFQ

0313.800MXP

Littelfuse Inc.In Stock: 20030313.800MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDQ-8/10 is determined by strict equivalence across the following parameters:

• Current Rating: 800 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (exact match required)
• Mounting Type: Requires Holder (exact match required)

All substitute parts listed below meet these criteria and are therefore electrically and mechanically interchangeable with the BK/MDQ-8/10 in applications requiring an 800 mA, 250 V AC/DC slow-blow glass cartridge fuse in the 3AB/3AG holder format.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: BK/MDL-8/10-R (Eaton - Electronics Division)

The BK/MDL-8/10-R is the preferred substitute for the BK/MDQ-8/10. Both parts are manufactured by Eaton - Electronics Division and share identical electrical and mechanical specifications. The BK/MDL-8/10-R carries ROHS3 compliance status and maintains active product status with higher inventory availability (1372 pieces versus 1097 pieces). This option provides continuity within the same manufacturer ecosystem.

Secondary Substitute: 0313.800MXP (Littelfuse Inc.)

The 0313.800MXP is an active product from Littelfuse Inc. with the highest inventory level (1916 pieces). This part meets all electrical and mechanical equivalence criteria and carries ROHS3 compliance with CE, CSA, and UL certifications. The 0313.800MXP is suitable for applications requiring third-party manufacturer sourcing or supply chain diversification.

Tertiary Substitute: 0034.5224 (SCHURTER Inc.)

The 0034.5224 is a SCHURTER Inc. product that meets all substitution criteria. However, this part carries obsolete product status, indicating it is no longer in active production. While current inventory is available (766 pieces), this option should be considered only when other active alternatives are unavailable, as future procurement may be limited.

Frequently Asked Questions (FAQ)

Q: Can the BK/MDL-8/10-R be used as a direct replacement for the BK/MDQ-8/10?

A: Yes. The BK/MDL-8/10-R is electrically and mechanically equivalent to the BK/MDQ-8/10. Both parts share identical current rating (800 mA), voltage rating (250 V AC), fuse type (cartridge, glass), response time (slow blow), package format (3AB, 3AG), and physical dimensions (0.250" Dia x 1.250" L). Direct substitution is supported in all applications.

Q: What is the difference between the BK/MDQ-8/10 and BK/MDL-8/10-R?

A: The primary differences are series designation (MDQ versus MDL) and RoHS compliance status. The BK/MDQ-8/10 is RoHS non-compliant, while the BK/MDL-8/10-R is ROHS3 compliant. All electrical and mechanical parameters are identical. The BK/MDL-8/10-R is the updated variant within the Eaton product line.

Q: Are the Littelfuse 0313.800MXP and SCHURTER 0034.5224 parts compatible with the same holder as the BK/MDQ-8/10?

A: Yes. All substitute parts listed use the 3AB, 3AG holder format with identical 1/4" x 1-1/4" dimensions. They are mechanically compatible with any holder designed for the BK/MDQ-8/10.

Q: Why is the 0034.5224 marked as obsolete?

A: The 0034.5224 is no longer in active production by SCHURTER Inc. While current inventory exists, this part should not be selected for new designs or long-term supply requirements. Active alternatives (BK/MDL-8/10-R or 0313.800MXP) are recommended for ongoing applications.

Q: What certifications apply to each substitute part?

A: The BK/MDQ-8/10 and BK/MDL-8/10-R do not list specific approval agencies. The 0034.5224 carries CSA and UL certifications. The 0313.800MXP carries CE, CSA, and UL certifications. Application requirements should determine whether specific certifications are necessary for component selection.

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

A: All parts are rated for 250 V AC/DC operation. The 250 V rating applies to both AC and DC applications within the specified current range (800 mA).