BK/MDL-1/32 Equivalent & Substitute Parts

Part Overview

The BK/MDL-1/32 is a 32 mA, 250 V AC/DC slow-blow glass fuse cartridge manufactured by Eaton - Electronics Division. This component is classified as an active product and is supplied in bulk packaging. The fuse requires a 3AB or 3AG holder and features a 1/4" x 1-1/4" form factor (6.35mm x 31.75mm). With 806 pieces in current inventory, this part remains available for new designs and replacement applications. Substitute parts are identified when original stock becomes unavailable, when supply chain constraints occur, or when design flexibility permits equivalent component selection within specified electrical and mechanical parameters.

Substiute Parts

BK/MDL-1/32

Eaton - Electronics DivisionIn Stock: 882BK/MDL-1/32 Datasheet

Current PartRFQ

0313.031HXP

Littelfuse Inc.In Stock: 11870313.031HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/MDL-1/32 are identified based on strict equivalence across the following critical parameters:

Electrical Parameters:

• Voltage Rating: 250 V AC minimum
• Response Time: Slow Blow characteristic
• Current Rating: Within acceptable tolerance of 32 mA

Mechanical Parameters:

• Fuse Type: Cartridge, Glass construction
• Package / Case: 3AB, 3AG form factor
• Physical Dimensions: 1/4" x 1-1/4" (6.35mm x 31.75mm)
• Mounting: Requires compatible holder

Compliance Parameters:

• Product Status: Active
• RoHS Compliance: Preferred for new designs

The substitute part 0313.031HXP from Littelfuse Inc. meets these criteria with a 31 mA current rating, which falls within the operational tolerance band for this fuse category while maintaining identical voltage, response time, package, and physical specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (BK/MDL-1/32): The BK/MDL-1/32 remains the specified component for existing designs and applications where the original part number is established. This part is active and maintains adequate inventory (806 pieces).

Substitute Selection (0313.031HXP): The Littelfuse 0313.031HXP serves as an equivalent substitute when the primary part becomes unavailable. This substitute meets all critical electrical and mechanical parameters. The 31 mA current rating is within the tolerance band for this fuse category and maintains the same 250 V AC voltage rating, slow-blow response characteristic, and 3AB/3AG package form factor.

Compliance Considerations: The 0313.031HXP provides additional compliance advantages for new designs, including ROHS3 compliance, CE/CSA/UL certifications, and a defined operating temperature range (-55°C ~ 125°C). The BK/MDL-1/32 is RoHS non-compliant and lacks specified approval agency certifications.

Inventory Status: The 0313.031HXP maintains higher current inventory (1103 pieces) compared to the primary part, supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 0313.031HXP replace the BK/MDL-1/32 in existing applications?

A: Yes. Both parts are slow-blow glass cartridge fuses with identical 250 V AC ratings, identical 3AB/3AG package specifications, and identical 1/4" x 1-1/4" physical dimensions. The 31 mA current rating of the substitute falls within the operational tolerance band for this fuse category and maintains functional equivalence.

Q: What is the significance of the 1 mA difference in current rating?

A: The BK/MDL-1/32 is rated at 32 mA while the 0313.031HXP is rated at 31 mA. This 3% difference is within standard tolerance ranges for fuse components in this category and does not affect substitution eligibility. Both parts operate at the same voltage and response time.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.250" diameter x 1.250" length (6.35mm x 31.75mm) and are compatible with 3AB and 3AG holders.

Q: What holder types are required?

A: Both the BK/MDL-1/32 and 0313.031HXP require 3AB or 3AG fuse holders. These are standard cartridge fuse holders designed for 1/4" x 1-1/4" form factor components.

Q: Does the substitute part have better compliance certifications?

A: Yes. The 0313.031HXP carries CE, CSA, and UL approvals and is ROHS3 compliant. The BK/MDL-1/32 does not specify approval agencies and is RoHS non-compliant. For new designs subject to regulatory requirements, the substitute part offers compliance advantages.

Q: What is the operating temperature range for each part?

A: The BK/MDL-1/32 does not specify an operating temperature range. The 0313.031HXP operates across -55°C to 125°C, providing defined thermal performance parameters.

Q: Are both parts available in bulk packaging?

A: Yes. Both the BK/MDL-1/32 and 0313.031HXP are supplied in bulk packaging without tape-and-reel or other specialized packaging options.