Littelfuse 0672001.MXE Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0672001.MXE is a 1 A, 250 V AC/DC fast-blow glass cartridge fuse with axial through-hole mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The glass cartridge construction provides visual indication of fuse status and is widely used in legacy electronic equipment requiring reliable overcurrent protection.

Substiute Parts

0672001.MXE

Littelfuse Inc.In Stock: 7770672001.MXE Datasheet

Current PartRFQ

0874001.MXEP

LittelfuseIn Stock: 12560874001.MXEP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0672001.MXE is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 1 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 50 A (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Cartridge, Non-Standard (Axial) (exact match required)

The Littelfuse 0874001.MXEP meets all substitution criteria. While the fuse cartridge material differs (ceramic instead of glass), the electrical performance characteristics, current and voltage ratings, response time, breaking capacity, and physical mounting configuration remain equivalent. The ceramic construction represents an active product alternative with enhanced operating temperature range and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0874001.MXEP is the designated manufacturer substitute for the obsolete 0672001.MXE. Both components maintain identical electrical performance specifications: 1 A current rating, 250 V AC voltage rating, fast-blow response time, and 50 A breaking capacity. Both components satisfy ROHS3 compliance requirements and carry recognized safety certifications (CSA/UL for the original part; cULus for the substitute).

The 0874001.MXEP offers the advantage of active product status with established supply chain availability. The ceramic cartridge construction provides a defined operating temperature range (-55°C to 125°C), whereas the original glass cartridge does not specify operating temperature limits. Physical dimensions show minor variation, with the ceramic cartridge measuring slightly smaller in both diameter and length. The lower DC cold resistance (0.086 Ohms versus 0.1056 Ohms) and reduced melting I²t value (0.406 versus 0.508) reflect the ceramic material properties and do not affect functional equivalence for the specified electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can the 0874001.MXEP directly replace the 0672001.MXE in existing designs?

A: Yes. Both components share identical current rating (1 A), voltage rating (250 V AC), response time (fast blow), breaking capacity (50 A), and mounting configuration (through-hole axial cartridge). The electrical performance is equivalent.

Q: What is the primary difference between these two fuse cartridges?

A: The main difference is cartridge material: the 0672001.MXE uses glass construction, while the 0874001.MXEP uses ceramic construction. This material difference does not affect electrical equivalence but provides the ceramic variant with a specified operating temperature range.

Q: Are there physical dimension differences that could affect board layout?

A: Yes. The 0874001.MXEP is slightly smaller: 0.142" diameter x 0.394" length compared to 0.154" diameter x 0.433" length for the 0672001.MXE. Verify that fuse holder specifications accommodate the ceramic cartridge dimensions before implementation.

Q: Do both parts carry the same safety certifications?

A: Both components carry recognized safety certifications. The 0672001.MXE holds CSA and UL approval. The 0874001.MXEP holds cULus approval. Both meet ROHS3 compliance requirements.

Q: Why is the 0672001.MXE classified as obsolete?

A: The 0672001.MXE is no longer in active production. The 0874001.MXEP represents the current active equivalent from Littelfuse, ensuring continued availability and supply chain support.