Equivalent & Substitute Parts for BK/MDA-1/16 Ceramic Fuse

Part Overview

The BK/MDA-1/16 is a 31 mA, 250 V AC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This component is classified as obsolete and requires a compatible fuse holder (3AB, 3AG format). Due to its obsolete product status, direct replacement with active production alternatives is necessary for new designs, repairs, and ongoing system support. The substitute parts listed maintain electrical and mechanical compatibility while offering active product status and improved compliance certifications.

Substiute Parts

BK/MDA-1/16

Eaton - Electronics DivisionIn Stock: 780BK/MDA-1/16 Datasheet

Current PartRFQ

0326.031HXP

Littelfuse Inc.In Stock: 8220326.031HXP Datasheet

DirectRFQ

0326.031MXP

Littelfuse Inc.In Stock: 6710326.031MXP Datasheet

DirectRFQ

0326.031VXP

LittelfuseIn Stock: 10920326.031VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/MDA-1/16 is based on strict equivalence of the following electrical and mechanical parameters:

• Current Rating: 31 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L (exact match required)

All three substitute parts—0326.031HXP, 0326.031MXP, and 0326.031VXP—from Littelfuse Inc. meet these criteria without exception. These parts are manufactured in the Littelfuse 326 series and maintain full electrical and mechanical compatibility with the original BK/MDA-1/16 specification.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitute parts (0326.031HXP, 0326.031MXP, 0326.031VXP) are direct functional equivalents to the BK/MDA-1/16. Selection among these three alternatives should be based on the following factors:

Product Status: All substitute parts carry active product status, ensuring long-term availability and supply chain continuity compared to the obsolete BK/MDA-1/16.

Compliance Certifications: All substitute parts are ROHS3 compliant and carry CE approval, providing enhanced regulatory compliance for new designs and systems subject to modern environmental and safety standards.

Electrical Performance: All substitute parts specify a breaking capacity of 100A at rated voltage and a melting I²t of 0.011, providing documented performance characteristics not available for the original part.

Operating Temperature Range: All substitute parts are rated for -55°C to 125°C operation, establishing a defined thermal operating envelope.

Inventory Availability: Littelfuse part 0326.031VXP maintains the highest inventory level (1007 pcs), followed by 0326.031HXP (775 pcs) and 0326.031MXP (611 pcs). Selection may consider supply chain requirements and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 326 series parts directly replace the Eaton BK/MDA-1/16 in existing equipment?

A: Yes. The Littelfuse parts 0326.031HXP, 0326.031MXP, and 0326.031VXP are direct electrical and mechanical equivalents. They share identical current rating (31 mA), voltage rating (250 V AC), fuse type (ceramic cartridge), response time (slow blow), and physical dimensions (0.250" Dia x 1.250" L). They install in the same 3AB, 3AG fuse holders without modification.

Q: What is the difference between the three Littelfuse substitute parts?

A: The three parts—0326.031HXP, 0326.031MXP, and 0326.031VXP—are electrically and mechanically identical. They differ only in packaging designation and inventory availability. All three are from the Littelfuse 326 series and meet the same electrical specifications.

Q: Why is the BK/MDA-1/16 listed as obsolete?

A: The BK/MDA-1/16 is an older Eaton product no longer in active production. Littelfuse equivalents are recommended for new designs and ongoing system support to ensure continued component availability.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three Littelfuse substitute parts (0326.031HXP, 0326.031MXP, 0326.031VXP) are ROHS3 compliant, whereas the original BK/MDA-1/16 is RoHS non-compliant. This provides improved environmental compliance for systems subject to RoHS regulations.

Q: Do the substitute parts have CE approval?

A: Yes. All three Littelfuse substitute parts carry CE approval, providing compliance with European safety and electromagnetic compatibility standards.

Q: What is the breaking capacity of these fuses?

A: All three Littelfuse substitute parts specify a breaking capacity of 100A at rated voltage (250 V AC), with a melting I²t of 0.011.

Q: What is the operating temperature range?

A: All three Littelfuse substitute parts are rated for operation from -55°C to 125°C.

Q: Are these parts suitable for DC applications?

A: The parts are rated for 250 V AC/DC operation. The DC cold resistance is specified as 332.5 Ohms for all three substitute parts.