Littelfuse 0325005.H Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0325005.H is a 5 A 250 V AC/DC ceramic cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 3AB and 3AG package formats. This part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts maintain identical electrical ratings and mechanical specifications while offering improved compliance status and extended operating temperature ranges.

Substiute Parts

0325005.H

LittelfuseIn Stock: 10120325005.H Datasheet

Current PartRFQ

0325005.HXP

Littelfuse Inc.In Stock: 10310325005.HXP Datasheet

DirectRFQ

0325005.MXP

Littelfuse Inc.In Stock: 10440325005.MXP Datasheet

Parametric EquivalentRFQ

0325005.VXP

Littelfuse Inc.In Stock: 10570325005.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Current Rating: 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" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 400 A (exact match required)
• Melting I²t: 25 (exact match required)
• Size / Dimension: 0.275" Dia x 1.288" L (6.99mm x 32.72mm) (exact match required)

All substitute parts listed below meet these criteria. Variations in DC Cold Resistance (0.0522 Ohms vs. 0.0518 Ohms), operating temperature range, and compliance certifications do not affect functional substitutability for the specified electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (0325005.HXP, 0325005.MXP, 0325005.VXP) are functionally equivalent to the obsolete 0325005.H across all critical electrical and mechanical parameters. Selection among these active alternatives should be based on the following factors:

Product Status: The main part 0325005.H is obsolete. All substitute parts maintain active product status, ensuring continued availability and manufacturing support.

Compliance Certifications: The substitute parts carry expanded approval certifications (CE, CSA, PSE, UL) compared to the main part (CSA, UL), providing broader regulatory acceptance across international markets.

RoHS Compliance: All substitute parts are ROHS3 compliant, whereas the main part is non-compliant. This distinction is significant for applications subject to RoHS regulations.

Operating Temperature Range: Substitute parts specify an operating temperature range of -55°C to 125°C, providing defined thermal performance boundaries for circuit design. The main part does not specify an operating temperature range.

Inventory Availability: Current stock levels are 927 units (0325005.HXP), 989 units (0325005.MXP), and 1028 units (0325005.VXP), all exceeding the 963 units available for the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can 0325005.HXP, 0325005.MXP, and 0325005.VXP be used interchangeably with 0325005.H?

A: Yes. All three substitute parts maintain identical electrical ratings (5 A, 250 V AC), fuse type (ceramic cartridge), response time (slow blow), mechanical dimensions (0.275" Dia x 1.288" L), and breaking capacity (400 A). The minor variation in DC cold resistance (0.0522 Ohms vs. 0325005.H at 0.0518 Ohms) does not affect functional performance in circuit applications.

Q: Why is the main part 0325005.H classified as obsolete?

A: Obsolescence reflects the manufacturer's decision to discontinue production. Active substitute parts with identical specifications are available to support ongoing design and production requirements.

Q: What is the significance of ROHS3 compliance in the substitute parts?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive, restricting the use of specific hazardous materials in electrical and electronic equipment. This is required for products sold in the European Union and many other regulated markets. The main part 0325005.H is non-compliant.

Q: Are there differences in packaging between the main part and substitutes?

A: The main part 0325005.H is specified with "-" packaging notation. All substitute parts are supplied in bulk packaging. Both configurations maintain the same 3AB, 3AG cartridge format and through-hole mounting specifications.

Q: Do the substitute parts have different operating temperature specifications?

A: Yes. The substitute parts specify an operating temperature range of -55°C to 125°C. The main part does not specify an operating temperature range. This defined range in the substitutes provides explicit thermal performance boundaries for circuit design and environmental stress analysis.

Q: What certifications do the substitute parts carry?

A: All substitute parts carry CE, CSA, PSE, and UL certifications. The main part carries CSA and UL certifications only. The expanded certification set in the substitutes provides regulatory acceptance across additional international markets.

Q: Is there a preferred substitute part among 0325005.HXP, 0325005.MXP, and 0325005.VXP?

A: All three parts are functionally equivalent. Selection may be based on inventory availability, packaging preferences, or supply chain considerations. Current inventory levels are 927 units (0325005.HXP), 989 units (0325005.MXP), and 1028 units (0325005.VXP).