Littelfuse 0325003.MXP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0325003.MXP is a 3 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This through-hole component is designed for applications requiring slow-blow response characteristics and is housed in a 3AB/3AG form factor measuring 0.275" diameter by 1.288" length. The part maintains Active product status with full compliance to international safety standards including UL, CSA, CE, K-MARK, and PSE certifications. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

0325003.MXP

Littelfuse Inc.In Stock: 11590325003.MXP Datasheet

Current PartRFQ

0325003.HXP

Littelfuse Inc.In Stock: 12150325003.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0325003.MXP is determined by strict equivalence across the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 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)
• Breaking Capacity @ Rated Voltage: 100A AC, 10kA DC (exact match required)
• Melting I²t: 200 (exact match required)

The substitute part 0325003.HXP from Littelfuse Inc. meets all these criteria and is classified as a parametric equivalent. Both parts are manufactured by the same supplier, belong to the same 325 series, and maintain identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0325003.MXP and 0325003.HXP maintain Active product status and carry identical international safety certifications (UL, CSA, CE, K-MARK, PSE). Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The parts are interchangeable from an electrical, mechanical, and compliance perspective. Selection between these two part numbers may be based on inventory availability, lead time, or supply chain logistics, as no technical differentiation exists between them.

Frequently Asked Questions (FAQ)

Q: Can 0325003.HXP be used as a direct replacement for 0325003.MXP in existing designs?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (3 A, 250 V AC, 125 V DC), identical response characteristics (Slow Blow), identical mechanical packaging (3AB/3AG, 0.275" Dia x 1.288" L), and identical breaking capacity (100A AC, 10kA DC). No circuit redesign or board layout modification is required.

Q: Are there any differences in approval certifications between these parts?

A: No. Both parts carry identical certifications: CE, CSA, K-MARK, PSE, and UL. Both are ROHS3 compliant and REACH unaffected.

Q: What determines whether a fuse can substitute for the 0325003.MXP?

A: Substitution requires exact matching of current rating (3 A), AC voltage rating (250 V), DC voltage rating (125 V), fuse type (Cartridge, Ceramic), response time (Slow Blow), package form factor (3AB/3AG, 1/4" x 1-1/4"), breaking capacity (100A AC, 10kA DC), and melting I²t value (200). Deviation in any of these parameters disqualifies a part from substitution.

Q: Can this fuse be used in both AC and DC circuits?

A: Yes. The 0325003.MXP and 0325003.HXP are rated for both AC and DC operation with separate voltage ratings: 250 V AC and 125 V DC. The application circuit must not exceed these respective voltage limits.

Q: What is the significance of the Slow Blow response time?

A: Slow Blow fuses tolerate temporary inrush currents without nuisance blowing, making them suitable for circuits with transient current spikes. This characteristic is identical between both parts and must be maintained in any substitution.