Eaton MDA-1-1/2-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The Eaton MDA-1-1/2-R is a 1.5 A, 250 V AC ceramic cartridge fuse with slow-blow response characteristics. This fuse is designed for use in 3AB and 3AG holders and requires an external mounting assembly. The component is classified as Active product status with full compliance to CE, CSA, and UL approval agencies. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional performance parameters align with the original specification, enabling direct replacement in applications where the main part becomes unavailable or inventory constraints require alternative sourcing.

Substiute Parts

MDA-1-1/2-R

Eaton - Electronics DivisionIn Stock: 1143MDA-1-1/2-R Datasheet

Current PartRFQ

BK/MDA-1-1/2-R

Eaton - Electronics DivisionIn Stock: 1954BK/MDA-1-1/2-R Datasheet

DirectRFQ

032601.5HXP

Littelfuse Inc.In Stock: 1079032601.5HXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MDA-1-1/2-R are qualified based on the following critical parameters:

Primary Matching Criteria:

• Current Rating: 1.5 A (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 (exact match required)

Secondary Compatibility Factors:

• Breaking Capacity @ Rated Voltage: 100 A minimum
• Mounting Type: Requires Holder (consistent with application requirements)
• RoHS Compliance: ROHS3 Compliant
• Approval Agencies: CE, CSA, UL certifications

Two substitute parts meet these criteria: BK/MDA-1-1/2-R (Eaton - Electronics Division) and 032601.5HXP (Littelfuse Inc.). Both maintain identical electrical ratings, mechanical form factors, and functional characteristics necessary for direct substitution in circuits designed for the MDA-1-1/2-R.

Parameter Comparison

Engineering Selection Recommendations

BK/MDA-1-1/2-R (Eaton - Electronics Division): This substitute is a direct equivalent manufactured by the same supplier as the original MDA-1-1/2-R. Electrical ratings, mechanical dimensions, breaking capacity, and melting I²t values are identical. Both components carry CE, CSA, and UL certifications and maintain ROHS3 compliance. This part is suitable for applications requiring exact parameter matching with the original specification. Current inventory availability is 1927 pieces.

032601.5HXP (Littelfuse Inc.): This substitute meets all primary matching criteria for current rating, voltage (AC), fuse type, response time, package dimensions, and mounting requirements. The component carries CE, CSA, PSE, and UL certifications, providing broader regulatory coverage than the original part. The Littelfuse part includes DC voltage rating (125 V) and extended operating temperature range (-55°C ~ 125°C), which are not specified for the Eaton parts. The melting I²t value (40.1) differs from the Eaton specification (3.4), indicating different thermal response characteristics. This part is suitable for applications where DC voltage capability and extended temperature operation are beneficial or required. Current inventory availability is 999 pieces.

Both substitute parts are Active status components with full regulatory compliance. Selection between them depends on application-specific requirements regarding DC voltage operation and thermal performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-1-1/2-R be used as a direct replacement for MDA-1-1/2-R?

A: Yes. BK/MDA-1-1/2-R is manufactured by Eaton - Electronics Division and maintains identical electrical ratings (1.5 A, 250 V AC), fuse type (Cartridge, Ceramic), response time (Slow Blow), mechanical dimensions (0.250" Dia x 1.250" L), and breaking capacity (100 A). Both components require 3AB or 3AG holders and carry equivalent CE, CSA, and UL certifications.

Q: What is the difference between the Eaton MDA-1-1/2-R and the Littelfuse 032601.5HXP?

A: Both parts share identical AC voltage rating (250 V), current rating (1.5 A), fuse type (Cartridge, Ceramic), response time (Slow Blow), and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). The Littelfuse part includes a 125 V DC rating not specified for the Eaton parts, an extended operating temperature range (-55°C ~ 125°C), and a higher melting I²t value (40.1 versus 3.4). These differences indicate different thermal response characteristics and broader environmental operating conditions.

Q: Are all three parts compatible with the same holder?

A: Yes. All three parts (MDA-1-1/2-R, BK/MDA-1-1/2-R, and 032601.5HXP) are designed for 3AB and 3AG holders with identical mechanical dimensions of 0.250" Dia x 1.250" L (6.35mm x 31.75mm). They are mechanically interchangeable in any holder designed for this package specification.

Q: Which substitute should be selected for DC circuit applications?

A: The Littelfuse 032601.5HXP includes a 125 V DC voltage rating, making it suitable for DC applications. The Eaton parts (MDA-1-1/2-R and BK/MDA-1-1/2-R) do not specify DC voltage ratings and are designed primarily for AC circuits.

Q: Do all parts meet RoHS compliance requirements?

A: Yes. All three parts (MDA-1-1/2-R, BK/MDA-1-1/2-R, and 032601.5HXP) are ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations.

Q: What regulatory certifications apply to each part?

A: MDA-1-1/2-R and BK/MDA-1-1/2-R carry CE, CSA, and UL certifications. The Littelfuse 032601.5HXP carries CE, CSA, PSE, and UL certifications, providing additional PSE (Product Safety Evaluation) approval.