Littelfuse 0672.250MXEP Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0672.250MXEP is a 250 mA, 250 V AC/DC fast-blow glass cartridge fuse with axial through-hole mounting. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing system maintenance. The glass cartridge construction provides visual indication of fuse status and is widely used in industrial and consumer electronics applications requiring overcurrent protection.

Substiute Parts

0672.250MXEP

Littelfuse Inc.In Stock: 11160672.250MXEP Datasheet

Current PartRFQ

0874.250MXEP

Littelfuse Inc.In Stock: 10220874.250MXEP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0672.250MXEP is determined by strict equivalence across the following critical parameters:

• Current Rating: 250 mA (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)
• Approval Agency: CSA, UL or equivalent international certifications

The primary substitute identified is the Littelfuse 0874.250MXEP, which maintains all critical electrical parameters while utilizing ceramic cartridge construction instead of glass. This substitution is valid because ceramic and glass cartridge fuses with identical electrical ratings, voltage specifications, and breaking capacity are functionally equivalent for overcurrent protection applications.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0874.250MXEP is the recommended substitute for the obsolete 0672.250MXEP based on the following engineering criteria:

• Both parts maintain identical current rating (250 mA) and voltage rating (250 V AC), ensuring equivalent overcurrent protection performance.
• Both parts feature fast-blow response time and 50 A breaking capacity at rated voltage, preserving circuit protection characteristics.
• The 0874.250MXEP holds active product status with cULus certification, providing ongoing availability and regulatory compliance for new designs and production.
• Both parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements.
• The ceramic cartridge construction of the 0874.250MXEP provides equivalent functional performance to the glass cartridge of the 0672.250MXEP for overcurrent protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 0874.250MXEP directly replace the 0672.250MXEP in existing designs?

A: Yes. Both parts share identical current rating (250 mA), voltage rating (250 V AC), response time (fast blow), and breaking capacity (50 A). The primary difference is cartridge material (ceramic vs. glass) and minor dimensional variations. Mechanical fit must be verified for the specific PCB or holder design, as the 0874.250MXEP has slightly smaller dimensions (0.142" Dia x 0.394" L vs. 0.154" Dia x 0.433" L).

Q: What is the functional difference between glass and ceramic cartridge fuses?

A: Both glass and ceramic cartridge fuses provide equivalent overcurrent protection when electrical parameters are identical. The material difference does not affect electrical performance, breaking capacity, or response time. Ceramic construction may offer improved mechanical robustness in certain environmental conditions.

Q: Are there any compliance or certification differences between these parts?

A: The 0672.250MXEP carries CSA and UL certifications, while the 0874.250MXEP carries cULus certification. Both certifications meet North American regulatory requirements. The 0874.250MXEP's active product status ensures ongoing compliance support and availability.

Q: What should be considered when substituting these parts in existing assemblies?

A: Verify mechanical fit within the fuse holder or PCB footprint, as dimensional differences exist. Confirm that the holder design accommodates the slightly smaller ceramic cartridge (3.60mm diameter vs. 3.90mm). Electrical performance and protection characteristics remain equivalent.

Q: Why is the 0672.250MXEP obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The 0874.250MXEP represents the active equivalent in Littelfuse's current product portfolio, offering the same electrical protection specifications with ongoing manufacturing and support.