MDA-V-3-R Equivalent & Substitute Parts

Part Overview

The MDA-V-3-R is a 3 A, 250 V AC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for through-hole mounting in 3AB and 3AG package configurations with axial lead geometry (1/4" x 1-1/4"). The part maintains active product status and is stocked in bulk packaging. Substitute parts are identified when original inventory is unavailable, when supply chain requirements necessitate alternative sourcing, or when design flexibility permits equivalent electrical and mechanical performance within specified parameter tolerances.

Substiute Parts

MDA-V-3-R

Eaton - Electronics DivisionIn Stock: 1017MDA-V-3-R Datasheet

Current PartRFQ

0325003.HXP

Littelfuse Inc.In Stock: 12150325003.HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA-V-3-R is determined by strict equivalence across the following parameters:

Mandatory Matching Parameters:

• Current Rating: 3 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" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)

Compliance Parameters:

• RoHS3 Compliance (required for environmental standards)
• Regulatory Approvals: CE, CSA, UL certifications (required for market acceptance)

The substitute part 0325003.HXP from Littelfuse Inc. satisfies all mandatory matching parameters and maintains equivalent regulatory compliance status. Additional DC voltage rating capability (125 V DC) in the substitute part does not disqualify it from substitution, as DC rating represents an extended operational envelope that does not compromise AC-rated performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The MDA-V-3-R remains the preferred component when available due to established design validation and supply chain continuity. The part maintains active product status with 909 units in stock and carries full regulatory approvals (CE, CSA, UL) with ROHS3 compliance.

Substitute Selection Criteria:

The 0325003.HXP from Littelfuse Inc. is electrically and mechanically equivalent for AC applications at 3 A, 250 V. This substitute satisfies all mandatory matching parameters and maintains equivalent regulatory compliance. The substitute part carries expanded certifications (K-MARK, PSE in addition to CE, CSA, UL) and specifies an operating temperature range (-55°C ~ 125°C), providing additional environmental documentation.

Compatibility Considerations:

Both parts conform to 3AB and 3AG package standards with through-hole axial mounting. Dimensional variations (0.266" vs. 0.275" diameter; 1.292" vs. 1.288" length) fall within standard tolerance ranges for this package class and do not affect PCB footprint compatibility or mechanical fit in standard fuse holders.

Regulatory and Compliance Status:

Both parts maintain ROHS3 compliance and carry required market certifications. The substitute part's additional certifications (K-MARK, PSE) do not introduce incompatibility and may provide expanded geographic market acceptance.

Frequently Asked Questions (FAQ)

Q: Can the 0325003.HXP substitute for the MDA-V-3-R in all applications?

A: The 0325003.HXP is electrically and mechanically equivalent for AC applications at the specified 3 A, 250 V rating. Both parts are ceramic cartridge fuses with slow-blow response characteristics and identical package geometry (3AB, 3AG, 1/4" x 1-1/4" axial). Substitution is valid where the original design does not require DC voltage protection, as the MDA-V-3-R does not specify a DC rating.

Q: What are the dimensional differences between these parts?

A: The MDA-V-3-R measures 0.266" diameter x 1.292" length (6.76 mm x 32.82 mm). The 0325003.HXP measures 0.275" diameter x 1.288" length (6.99 mm x 32.72 mm). Both dimensions conform to 3AB and 3AG standard package specifications. These minor variations do not affect compatibility with standard through-hole fuse holders or PCB layouts designed for this package class.

Q: Are the regulatory certifications equivalent?

A: Both parts carry CE, CSA, and UL certifications required for primary markets. The 0325003.HXP includes additional certifications (K-MARK, PSE) that extend geographic market coverage. For applications requiring only CE, CSA, and UL compliance, both parts are equivalent.

Q: What is the significance of the different melting I²t values?

A: The MDA-V-3-R specifies melting I²t of 12.1, while the 0325003.HXP specifies 200. Both parts are rated for 3 A slow-blow response. The I²t value reflects thermal energy absorption characteristics. The substitute part's higher I²t value indicates greater thermal capacity, which does not compromise performance at the specified 3 A rating and may provide additional margin in transient current scenarios.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, for designs validated at 3 A, 250 V AC with slow-blow ceramic cartridge fuses in 3AB/3AG packages. The through-hole mounting geometry and package footprint are identical. No PCB layout modifications are required. Existing fuse holder compatibility is maintained.

Q: What is the difference in breaking capacity between these parts?

A: The MDA-V-3-R specifies 200 A breaking capacity at rated voltage. The 0325003.HXP specifies 100 A AC and 10 kA DC breaking capacity. For AC applications at 250 V, the substitute part's 100 A AC breaking capacity is sufficient for standard circuit protection applications. Applications requiring 200 A breaking capacity should retain the original MDA-V-3-R specification.