BK/MDL-2-8/10 Equivalent & Substitute Parts

Part Overview

The BK/MDL-2-8/10 is a 2.8 A, 250 V AC/DC glass cartridge fuse with slow-blow response characteristics, designed for 3AB and 3AG holder compatibility. The part requires an external fuse holder for installation and operates within the 1/4" x 1-1/4" (6.35mm x 31.75mm) form factor.

The original BK/MDL-2-8/10 carries an obsolete product status with 676 pieces currently in stock. Identifying equivalent and substitute parts is necessary to ensure continued availability, access to active production alternatives, and compliance with current regulatory standards including RoHS requirements.

Substiute Parts

BK/MDL-2-8/10

Eaton - Electronics DivisionIn Stock: 734BK/MDL-2-8/10 Datasheet

Current PartRFQ

BK/MDL-2-8/10-R

Eaton - Electronics DivisionIn Stock: 988BK/MDL-2-8/10-R Datasheet

DirectRFQ

MDL-2-8/10-R

Eaton - Electronics DivisionIn Stock: 998MDL-2-8/10-R Datasheet

DirectRFQ

MDQ-2-8/10

Eaton - Electronics DivisionIn Stock: 1097MDQ-2-8/10 Datasheet

Parametric EquivalentRFQ

031302.8HXP

Littelfuse Inc.In Stock: 1021031302.8HXP Datasheet

Parametric EquivalentRFQ

031302.8MXP

Littelfuse Inc.In Stock: 836031302.8MXP Datasheet

Parametric EquivalentRFQ

031302.8VXP

Littelfuse Inc.In Stock: 1131031302.8VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/MDL-2-8/10 are classified into two categories based on electrical and mechanical parameter alignment:

Direct Manufacturer Substitutes (Eaton - Electronics Division): These parts maintain identical electrical specifications (2.8 A, 250 V AC, slow-blow response) and mechanical compatibility (3AB/3AG holders, 1/4" x 1-1/4" form factor). The substitutes BK/MDL-2-8/10-R and MDL-2-8/10-R differ from the original part in product status (active versus obsolete) and packaging configuration (bulk versus standard). Both are manufactured by Eaton and share the MDL series designation.

Parametric Equivalents (Eaton MDQ Series and Littelfuse 313 Series): These parts match all critical electrical parameters (2.8 A, 250 V AC, slow-blow response, 100 A breaking capacity) and mechanical specifications (3AB/3AG compatibility, identical dimensions). The MDQ-2-8/10 represents an alternative Eaton series with enhanced certifications (CSA, UL). The Littelfuse 313 series parts (031302.8HXP, 031302.8MXP, 031302.8VXP) provide cross-manufacturer equivalency with expanded regulatory approvals and enhanced environmental specifications.

Key Parameters Determining Substitutability:

• Current Rating: 2.8 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Requires Holder (exact match required)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Active Status: BK/MDL-2-8/10-R and MDL-2-8/10-R are the primary alternatives to the obsolete BK/MDL-2-8/10. Both parts maintain identical electrical and mechanical specifications while offering active product status and RoHS compliance. These Eaton-manufactured substitutes provide continuity within the same manufacturer ecosystem and are suitable for direct substitution in existing designs.

For Enhanced Regulatory Compliance: MDQ-2-8/10 (Eaton) provides the same electrical and mechanical parameters with documented breaking capacity (100 A) and dual certifications (CSA, UL). This part is appropriate for applications requiring explicit regulatory documentation.

For Cross-Manufacturer Equivalency: The Littelfuse 313 series parts (031302.8HXP, 031302.8MXP, 031302.8VXP) deliver parametric equivalency with expanded certifications (CE, CSA, K-MARK, PSE, UL for 031302.8HXP; CE, CSA, K-MARK, PSE, UL for 031302.8MXP; CE, CSA, KC, PSE, UL for 031302.8VXP). These parts include additional technical specifications: 100 A breaking capacity, 170 melting I²t, 0.0675 Ohms DC cold resistance, and operating temperature range of -55°C to 125°C. ROHS3 compliance and REACH unaffected status are documented. These substitutes are suitable for applications requiring multi-regional certifications or enhanced environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can BK/MDL-2-8/10-R be used as a direct replacement for BK/MDL-2-8/10?

A: Yes. Both parts share identical electrical specifications (2.8 A, 250 V AC, slow-blow response) and mechanical compatibility (3AB/3AG holders, 1/4" x 1-1/4" form factor). The primary difference is product status (active versus obsolete) and RoHS compliance. BK/MDL-2-8/10-R is the recommended direct substitute.

Q: What is the difference between MDL-2-8/10-R and BK/MDL-2-8/10-R?

A: Both parts are manufactured by Eaton with identical electrical and mechanical specifications. The difference lies in part number designation and packaging configuration. Both are active products with RoHS compliance and are electrically interchangeable.

Q: Are Littelfuse 313 series fuses compatible with existing 3AB/3AG holders?

A: Yes. The Littelfuse 031302.8HXP, 031302.8MXP, and 031302.8VXP parts maintain the same 1/4" x 1-1/4" (6.35mm x 31.75mm) form factor and are designed for 3AB and 3AG holder compatibility. Mechanical and electrical interchangeability is confirmed.

Q: What additional certifications do Littelfuse 313 series parts provide?

A: Littelfuse 031302.8HXP carries CE, CSA, K-MARK, PSE, and UL certifications. The 031302.8MXP variant includes the same certifications. The 031302.8VXP includes CE, CSA, KC, PSE, and UL certifications. All three parts are ROHS3 compliant and REACH unaffected.

Q: Does MDQ-2-8/10 offer advantages over the MDL series substitutes?

A: MDQ-2-8/10 provides documented breaking capacity (100 A) and dual certifications (CSA, UL) compared to the MDL series. All three Eaton alternatives (BK/MDL-2-8/10-R, MDL-2-8/10-R, MDQ-2-8/10) are electrically and mechanically equivalent. Selection depends on specific certification requirements and documentation needs.

Q: Can I mix different substitute parts in the same application?

A: All substitute parts listed maintain identical electrical specifications (2.8 A, 250 V AC, slow-blow response) and mechanical compatibility (3AB/3AG holders, 1/4" x 1-1/4" form factor). Substitution decisions should be based on product status, regulatory compliance requirements, and certification needs specific to the application.

Q: What is the inventory status of substitute parts?

A: BK/MDL-2-8/10-R: 900 pieces in stock. MDL-2-8/10-R: 903 pieces in stock. MDQ-2-8/10: 1061 pieces in stock. Littelfuse 031302.8HXP: 940 pieces in stock. Littelfuse 031302.8MXP: 737 pieces in stock. Littelfuse 031302.8VXP: 1103 pieces in stock. All substitute parts are available as new original stock.