Equivalent & Substitute Parts for BK/MDA-1/100

Part Overview

The Eaton BK/MDA-1/100 is a 10 mA, 250 V AC/DC ceramic cartridge fuse with slow-blow response characteristics, designed for 3AB and 3AG holder compatibility. This component operates in the 1/4" x 1-1/4" form factor and requires an external fuse holder for installation.

The BK/MDA-1/100 is classified as obsolete. Substitute parts are necessary to maintain circuit protection functionality in applications where the original Eaton component is no longer available through standard distribution channels.

Substiute Parts

BK/MDA-1/100

Eaton - Electronics DivisionIn Stock: 1173BK/MDA-1/100 Datasheet

Current PartRFQ

0326.010HXP

LittelfuseIn Stock: 8200326.010HXP Datasheet

DirectRFQ

0326.010MXP

Littelfuse Inc.In Stock: 11800326.010MXP Datasheet

DirectRFQ

0326.010VXP

Littelfuse Inc.In Stock: 8640326.010VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDA-1/100 is determined by strict equivalence across the following parameters:

• Current Rating: 10 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)
• Mounting Type: Requires Holder (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (exact match required)

All three Littelfuse substitute parts—0326.010HXP, 0326.010MXP, and 0326.010VXP—meet these criteria and are therefore direct electrical and mechanical equivalents to the BK/MDA-1/100.

Parameter Comparison

Engineering Selection Recommendations

The BK/MDA-1/100 is obsolete and no longer manufactured by Eaton. All three Littelfuse substitute parts—0326.010HXP, 0326.010MXP, and 0326.010VXP—are active products with identical electrical and mechanical specifications.

Compliance Considerations:

The Littelfuse substitutes provide enhanced regulatory compliance compared to the original part. All three substitutes are ROHS3 compliant, whereas the BK/MDA-1/100 is RoHS non-compliant. The 0326.010HXP variant carries the broadest approval agency certifications (CE, CSA, ICC, PSE, SEMKO, TUV, UR, VDE), while 0326.010MXP and 0326.010VXP carry CE certification.

For applications requiring specific regulatory approvals, 0326.010HXP is the preferred substitute due to its comprehensive certification portfolio. For general-purpose applications, all three substitutes are functionally equivalent and interchangeable.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0326.010HXP, 0326.010MXP, or 0326.010VXP be used as direct replacements for the Eaton BK/MDA-1/100?

A: Yes. All three Littelfuse parts are direct electrical and mechanical equivalents. They share identical current ratings (10 mA), voltage ratings (250 V AC), fuse type (ceramic cartridge), response time (slow blow), and physical dimensions (0.250" Dia x 1.250" L). All require the same 3AB or 3AG holder.

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

A: The three parts are electrically and mechanically identical. The primary difference is in regulatory certifications. The 0326.010HXP carries seven approval agencies (CE, CSA, ICC, PSE, SEMKO, TUV, UR, VDE), while 0326.010MXP and 0326.010VXP carry CE certification only. Selection should be based on the specific regulatory requirements of the application.

Q: Are the substitute parts compatible with existing 3AB and 3AG fuse holders?

A: Yes. All substitute parts are designed for 3AB and 3AG holder compatibility and maintain the same 1/4" x 1-1/4" form factor as the original BK/MDA-1/100.

Q: Does the RoHS compliance difference affect functionality?

A: No. RoHS compliance is a regulatory and environmental requirement, not a functional specification. The ROHS3-compliant Littelfuse substitutes perform identically to the RoHS non-compliant original part in circuit protection applications.

Q: What is the breaking capacity of the substitute parts?

A: All three Littelfuse substitutes have a breaking capacity of 100 A at rated voltage, providing enhanced fault protection compared to the original part, for which breaking capacity was not specified.