BK/MDA-1/10 Equivalent & Substitute Parts Reference

Part Overview

The BK/MDA-1/10 is a 100 mA, 250 V AC/DC 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 equivalents is necessary for new designs, repairs, and ongoing system support. The substitute parts listed maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

BK/MDA-1/10

Eaton - Electronics DivisionIn Stock: 995BK/MDA-1/10 Datasheet

Current PartRFQ

0326.100MXP

Littelfuse Inc.In Stock: 7800326.100MXP Datasheet

DirectRFQ

0326.100VXP

Littelfuse Inc.In Stock: 10430326.100VXP Datasheet

DirectRFQ

0326.100HXP

Littelfuse Inc.In Stock: 11630326.100HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/MDA-1/10 is determined by strict equivalence across the following critical parameters:

• Current Rating: 100 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)
• 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 three substitute parts—0326.100MXP, 0326.100VXP, and 0326.100HXP—manufactured by Littelfuse Inc. meet these criteria without deviation. These parts are classified as direct manufacturer equivalents or parametric equivalents and maintain full compatibility with existing 3AB/3AG fuse holders.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse 326 series substitute parts (0326.100MXP, 0326.100VXP, 0326.100HXP) provide direct functional equivalence to the obsolete BK/MDA-1/10. Selection among these three options is based on availability and packaging requirements, as all three maintain identical electrical and mechanical specifications.

Compliance Advantages of Substitutes:

The Littelfuse alternatives offer improved regulatory compliance compared to the original part. All three substitute parts are ROHS3 compliant, whereas the BK/MDA-1/10 is RoHS non-compliant. Additionally, all substitutes carry CE approval and REACH Unaffected status, providing enhanced environmental and safety certification for modern applications and markets with stricter regulatory requirements.

Product Status:

The BK/MDA-1/10 is classified as obsolete, making long-term supply and support unavailable. All three substitute parts maintain active product status with Littelfuse Inc., ensuring continued availability, technical support, and supply chain reliability.

Electrical Performance:

The substitute parts provide documented electrical performance parameters (Breaking Capacity of 100A, Melting I²t of 0.087, DC Cold Resistance of 33.55 Ohms, and Operating Temperature range of -55°C ~ 125°C) that were not specified for the original part. These parameters confirm performance equivalence and provide additional design confidence.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0326.100MXP, 0326.100VXP, or 0326.100HXP be used as direct replacements for the BK/MDA-1/10?

A: Yes. All three Littelfuse parts are direct functional equivalents. They maintain identical current rating (100 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 are fully compatible with existing 3AB/3AG fuse holders.

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

A: The 0326.100MXP, 0326.100VXP, and 0326.100HXP are electrically and mechanically identical. All three are part of the Littelfuse 326 series and meet the same specifications. Differences, if any, relate to packaging or internal manufacturing variants not specified in the provided data. Selection should be based on availability and packaging requirements.

Q: Why is the BK/MDA-1/10 obsolete?

A: The BK/MDA-1/10 is classified as obsolete by Eaton - Electronics Division. This status indicates that the manufacturer has discontinued production and support for this part. Substitution with active production equivalents is necessary for new designs and ongoing system maintenance.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three Littelfuse substitute parts (0326.100MXP, 0326.100VXP, 0326.100HXP) are ROHS3 compliant, whereas the original BK/MDA-1/10 is RoHS non-compliant. This provides improved environmental compliance for applications subject to RoHS regulations.

Q: Do the substitute parts have CE approval?

A: Yes. All three Littelfuse substitute parts carry CE approval and REACH Unaffected status, providing compliance with European regulatory requirements.

Q: What is the operating temperature range of the substitute parts?

A: The Littelfuse substitute parts operate across a temperature range of -55°C to 125°C, providing performance across a wide range of environmental conditions.

Q: Are the substitute parts available in bulk packaging?

A: Yes. All three substitute parts (0326.100MXP, 0326.100VXP, 0326.100HXP) are available in bulk packaging from Littelfuse Inc.

Q: What is the inventory status of the substitute parts?

A: Current inventory levels are: 0326.100MXP (709 Pcs), 0326.100VXP (965 Pcs), and 0326.100HXP (1109 Pcs) new original in stock.