Equivalent & Substitute Parts for BK/MDA-1/10-R

Part Overview

The Eaton BK/MDA-1/10-R is a 100 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 is classified as obsolete. Due to its obsolete product status, equivalent substitute components from active manufacturers are necessary to maintain system functionality and ensure continued availability for new designs and field replacements.

Substiute Parts

BK/MDA-1/10-R

Eaton - Electronics DivisionIn Stock: 1056BK/MDA-1/10-R 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-R is determined by strict equivalence across the following parameters:

Critical Substitution 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)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L (exact match required)

All substitute parts listed below meet these critical parameters without deviation. The Littelfuse 326 series components (0326.100MXP, 0326.100VXP, 0326.100HXP) provide direct functional equivalence to the obsolete Eaton MDA series fuse.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 326 series ceramic cartridge fuses (0326.100MXP, 0326.100VXP, 0326.100HXP) are direct functional equivalents to the obsolete Eaton BK/MDA-1/10-R. All three substitute parts maintain identical electrical and mechanical specifications across current rating, voltage rating, response time, and physical form factor.

Product Status Consideration: The Eaton MDA-1/10-R is classified as obsolete, while all Littelfuse 326 series alternatives are active products. This ensures long-term availability and continued manufacturing support for new designs and field service applications.

Compliance and Certification: All substitute parts carry CE approval and REACH Unaffected status, providing regulatory compliance for European and international markets. RoHS3 compliance is maintained across all options, ensuring environmental and hazardous substance restrictions are met.

Performance Specifications: The Littelfuse substitutes provide additional documented performance data including breaking capacity (100A), melting I²t (0.087), operating temperature range (-55°C ~ 125°C), and DC cold resistance (33.55 Ohms), which are not specified for the original Eaton component but do not conflict with its intended application parameters.

Frequently Asked Questions (FAQ)

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

A: Yes. All three Littelfuse 326 series fuses are direct functional equivalents. They match the critical substitution parameters: 100 mA current rating, 250 V AC voltage rating, ceramic cartridge construction, slow-blow response, 3AB/3AG holder compatibility, and 1/4" x 1-1/4" physical dimensions.

Q: What is the difference between the three Littelfuse substitute part numbers?

A: The 0326.100MXP, 0326.100VXP, and 0326.100HXP are all members of the Littelfuse 326 series with identical electrical and mechanical specifications. The differences in part number designation reflect internal Littelfuse product line variations but do not affect functional equivalence or performance in this application.

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

A: Yes. All substitute parts are specified for 3AB and 3AG holder compatibility and maintain the identical 1/4" x 1-1/4" form factor, ensuring direct mechanical and electrical compatibility with existing holder installations.

Q: Does the operating temperature range of the Littelfuse substitutes affect compatibility?

A: No. The Littelfuse 326 series operating temperature range of -55°C ~ 125°C encompasses standard industrial and commercial operating conditions. This specification does not conflict with the original Eaton component's intended use and provides documented thermal performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three Littelfuse 326 series fuses (0326.100MXP, 0326.100VXP, 0326.100HXP) are RoHS3 compliant, matching the compliance status of the original Eaton BK/MDA-1/10-R.

Q: What is the significance of the CE approval on the Littelfuse substitutes?

A: CE approval indicates compliance with European Union safety and electromagnetic compatibility directives. This certification supports regulatory requirements for products distributed in European markets and demonstrates adherence to applicable safety standards for ceramic cartridge fuses.