Equivalent & Substitute Parts for MDA-15/100-R Fuse Cartridge

Part Overview

The MDA-15/100-R is a 150 mA, 250 V AC/DC ceramic fuse cartridge manufactured by Eaton - Electronics Division. This component is classified as obsolete, requiring identification of active equivalent alternatives for continued system support and procurement. The MDA-15/100-R operates as a slow-blow fuse in 3AB and 3AG holder configurations with physical dimensions of 0.250" diameter by 1.250" length (6.35mm x 31.75mm). Substitute parts must maintain identical electrical ratings, mechanical compatibility, and response characteristics to ensure proper circuit protection without modification to existing holder assemblies.

Substiute Parts

MDA-15/100-R

Eaton - Electronics DivisionIn Stock: 1024MDA-15/100-R Datasheet

Current PartRFQ

0313.150HXP

Littelfuse Inc.In Stock: 12620313.150HXP Datasheet

DirectRFQ

0326.150MXP

Littelfuse Inc.In Stock: 9540326.150MXP Datasheet

SimilarRFQ

0326.150HXP

Littelfuse Inc.In Stock: 9710326.150HXP Datasheet

Parametric EquivalentRFQ

0326.150VXP

Littelfuse Inc.In Stock: 11540326.150VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA-15/100-R is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Current Rating: 150 mA (exact match required)
• Voltage Rating (AC): 250 V (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)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Requires Holder (exact match required)

Acceptable Variation Parameters:

• Fuse Type: Ceramic or Glass construction both acceptable (both provide equivalent circuit protection at rated specifications)
• Manufacturer: Littelfuse Inc. substitutes are qualified alternatives to Eaton

All substitute parts listed below meet these criteria and are classified as active products with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Ceramic Construction):

The Littelfuse 0326 series ceramic fuses (0326.150MXP, 0326.150HXP, 0326.150VXP) provide direct functional equivalence to the MDA-15/100-R. All three variants are active products with current manufacturing status, ensuring long-term procurement availability. These ceramic cartridges maintain identical electrical and mechanical specifications while offering enhanced breaking capacity (100A) and CE certification. The 0326 series is recommended for applications requiring ceramic fuse construction continuity.

Alternative Substitute (Glass Construction):

The Littelfuse 0313.150HXP glass fuse cartridge meets all critical electrical and mechanical parameters. This substitute is appropriate for applications where glass construction is acceptable. The 0313.150HXP provides CE, CSA, and UL certifications with a breaking capacity of 35A. Selection of glass versus ceramic construction depends on application-specific requirements not specified in the provided parameters.

Compliance Considerations:

All substitute parts are ROHS3 compliant and carry active product status. The 0326 series ceramic substitutes provide CE certification. The 0313.150HXP glass substitute provides CE, CSA, and UL certifications, offering broader regulatory coverage for certain markets.

Frequently Asked Questions (FAQ)

Q: Can the 0313.150HXP glass fuse replace the MDA-15/100-R ceramic fuse?

A: Yes. The 0313.150HXP meets all critical electrical parameters (150 mA, 250 V AC), response time (slow blow), and mechanical specifications (3AB/3AG holder compatibility, 0.250" x 1.250" dimensions). The primary difference is fuse element construction (glass versus ceramic). Both construction types are acceptable substitutes when electrical and mechanical compatibility is maintained.

Q: What is the difference between the three Littelfuse 0326 ceramic substitutes?

A: The 0326.150MXP, 0326.150HXP, and 0326.150VXP are all ceramic fuses with identical electrical ratings (150 mA, 250 V), response time (slow blow), and mechanical specifications. All three are active products with CE certification and -55°C to 125°C operating temperature range. Selection among these three variants depends on application-specific requirements and internal design variations not specified in the provided parameters.

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

A: Yes. All substitute parts maintain the 3AB and 3AG holder compatibility and physical dimensions (0.250" diameter x 1.250" length) of the original MDA-15/100-R. Direct installation in existing holder assemblies is supported without modification.

Q: What is the significance of breaking capacity differences between substitutes?

A: The 0313.150HXP glass fuse has a breaking capacity of 35A, while the 0326 series ceramic fuses have a breaking capacity of 100A. Breaking capacity indicates the maximum fault current the fuse can safely interrupt. Higher breaking capacity provides enhanced protection in high-fault-current applications. Selection depends on the specific circuit fault current characteristics.

Q: Why is the MDA-15/100-R classified as obsolete?

A: The MDA-15/100-R is no longer in active production by Eaton. The Littelfuse 0326 series ceramic and 0313 series glass fuses provide equivalent functionality with active manufacturing status, ensuring continued availability for new designs and system maintenance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (0313.150HXP, 0326.150MXP, 0326.150HXP, 0326.150VXP) are ROHS3 compliant, matching the compliance status of the original MDA-15/100-R.