Littelfuse 0672002.MXEP Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0672002.MXEP is a 2A 250VAC fast-blow glass cartridge fuse with axial through-hole mounting. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The part features a non-standard axial cartridge form factor with CSA and UL approval certifications.

Substiute Parts

0672002.MXEP

Littelfuse Inc.In Stock: 7930672002.MXEP Datasheet

Current PartRFQ

0874002.MXEP

Littelfuse Inc.In Stock: 20670874002.MXEP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0672002.MXEP is determined by the following critical electrical and mechanical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Cartridge, Non-Standard (Axial) (exact match required)
• Breaking Capacity @ Rated Voltage: 50 A (exact match required)

The primary substitute, Littelfuse 0874002.MXEP, maintains all critical electrical parameters while transitioning from a glass cartridge to a ceramic cartridge construction. This material change does not affect functional compatibility within the specified electrical and mechanical constraints. Both parts are manufactured by Littelfuse Inc. and carry equivalent regulatory approvals.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0874002.MXEP is the designated manufacturer substitute for the obsolete 0672002.MXEP. Selection of the 0874002.MXEP is supported by:

• Active product status with current manufacturing availability
• Identical electrical ratings (2A, 250VAC, 50A breaking capacity, fast-blow response)
• Equivalent regulatory certifications (cULus approval covers both CSA and UL requirements)
• ROHS3 compliance maintained
• Ceramic construction provides enhanced thermal stability with specified operating temperature range (-55°C ~ 125°C)

Physical dimensions differ slightly (0874002.MXEP is marginally smaller), requiring verification of mechanical fit within the host assembly. DC cold resistance and melting I²t values remain within acceptable tolerance for fast-blow fuse applications at the specified current rating.

Frequently Asked Questions (FAQ)

Q: Can the 0874002.MXEP directly replace the 0672002.MXEP in existing assemblies?

A: Electrical compatibility is confirmed across all critical parameters. Physical fit must be verified, as the 0874002.MXEP has slightly reduced dimensions (0.142" Dia x 0.394" L versus 0.154" Dia x 0.433" L). Mounting hardware and cartridge holder tolerances should be evaluated.

Q: What is the primary difference between these two fuses?

A: The main difference is cartridge material: the 0672002.MXEP uses glass construction, while the 0874002.MXEP uses ceramic construction. Both maintain identical electrical performance at 2A, 250VAC with fast-blow response characteristics.

Q: Are the regulatory approvals equivalent?

A: The 0874002.MXEP carries cULus certification, which encompasses both CSA and UL approvals required by the original 0672002.MXEP. Compliance requirements are met.

Q: Why is the 0672002.MXEP obsolete?

A: The 0672002.MXEP is classified as obsolete by the manufacturer. The 0874002.MXEP represents the active product line continuation with equivalent electrical specifications and improved thermal operating range.

Q: Are there differences in melting I²t values?

A: Yes. The 0672002.MXEP has a melting I²t of 2.27, while the 0874002.MXEP has 1.812. Both values are characteristic of fast-blow fuses at the 2A rating and do not affect functional substitution within the specified application parameters.