Littelfuse 0325020.MXDP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0325020.MXDP is a 20 A ceramic cartridge fuse rated for 250 V AC and 60 V DC operation. This slow-blow fuse is designed for through-hole mounting in the 3AB/3AG form factor (1/4" x 1-1/4" axial configuration). The part maintains active product status with full compliance to CE, CSA, and UL standards. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and procurement optimization when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

0325020.MXDP

Littelfuse Inc.In Stock: 19670325020.MXDP Datasheet

Current PartRFQ

0325020.MXP

Littelfuse Inc.In Stock: 27490325020.MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0325020.MXDP is determined by strict equivalence across the following critical parameters:

• Current Rating: 20 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 60 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)
• Breaking Capacity @ Rated Voltage: 400 A AC, 500 A DC (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The substitute part 0325020.MXP meets all critical electrical and mechanical parameters, confirming direct interchangeability in circuit protection applications requiring identical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the 0325020.MXDP and 0325020.MXP maintain active product status and comply with ROHS3 requirements. The 0325020.MXP provides expanded regulatory approvals including K-MARK and PSE certifications in addition to the CE, CSA, and UL certifications shared with the main part. Both parts are manufactured by Littelfuse Inc. and are suitable for direct substitution in circuit protection applications. Selection between these parts may be based on supply availability, inventory levels, or specific regional compliance requirements where the additional certifications of the 0325020.MXP are beneficial.

Frequently Asked Questions (FAQ)

Q: Can the 0325020.MXP be used as a direct replacement for the 0325020.MXDP?

A: Yes. Both parts are electrically and mechanically equivalent, sharing identical current ratings (20 A), voltage ratings (250 V AC, 60 V DC), fuse type (ceramic cartridge), response time (slow blow), package configuration (3AB/3AG, 1/4" x 1-1/4" axial), and breaking capacity (400 A AC, 500 A DC). They are interchangeable in through-hole circuit protection applications.

Q: Are there differences in melting I²t values between these parts?

A: The main part 0325020.MXDP specifies a melting I²t of 1900, while the substitute 0325020.MXP specifies 575. These differences do not affect substitution eligibility, as both parts meet the same current rating and response time classification.

Q: What is the difference in DC cold resistance between these parts?

A: The 0325020.MXDP has a DC cold resistance of 0.0042 Ohms, while the 0325020.MXP has 0.034 Ohms. Both values are within acceptable ranges for ceramic cartridge fuses and do not prevent direct substitution.

Q: Do both parts have the same regulatory approvals?

A: Both parts hold CE, CSA, and UL approvals. The 0325020.MXP additionally carries K-MARK and PSE certifications, providing broader regional compliance coverage.

Q: Are both parts currently available?

A: Both parts maintain active product status. The 0325020.MXDP has 1897 pieces in stock, while the 0325020.MXP has 2726 pieces in stock, providing multiple sourcing options.