Littelfuse 0672002.MXE Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0672002.MXE is a 2A 250VAC fast-blow glass cartridge fuse with axial through-hole mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The primary reason for sourcing substitute parts is the discontinued status of the original component. Equivalent alternatives must maintain identical electrical performance characteristics while potentially offering improved availability, compliance status, or operational temperature range.

Key Parameters

Parameter	Value
Current Rating	2 A
Voltage Rating (AC)	250 V
Response Time	Fast Blow
Mounting Type	Through Hole
Package Type	Cartridge, Non-Standard (Axial)
Breaking Capacity @ Rated Voltage	50 A
Size / Dimension	0.154" Dia x 0.433" L (3.90mm x 11.00mm)

Substitute Part Grouping Explanation

Substitution eligibility for the 0672002.MXE is determined by the following critical parameters:

Current Rating: Must be 2 A
Voltage Rating (AC): Must be 250 V
Response Time: Must be Fast Blow
Breaking Capacity @ Rated Voltage: Must be 50 A
Mounting Type: Must be Through Hole
Package Type: Must be Cartridge, Non-Standard (Axial)

The Littelfuse 0874002.MXEP meets all substitution criteria. While it differs in fuse element material (ceramic vs. glass) and has slightly different physical dimensions and resistance characteristics, these variations remain within acceptable tolerance for functional equivalence in this application category.

Parameter Comparison

Parameter	0672002.MXE (Original)	0874002.MXEP (Substitute)
Manufacturer	Littelfuse Inc.	Littelfuse Inc.
Current Rating (Amps)	2 A	2 A
Voltage Rating - AC	250 V	250 V
Response Time	Fast Blow	Fast Blow
Mounting Type	Through Hole	Through Hole
Fuse Type	Cartridge, Glass	Cartridge, Ceramic
Package / Case	Cartridge, Non-Standard (Axial)	Cartridge, Non-Standard (Axial)
Breaking Capacity @ Rated Voltage	50 A	50 A
Size / Dimension	0.154" Dia x 0.433" L (3.90mm x 11.00mm)	0.142" Dia x 0.394" L (3.60mm x 10.00mm)
DC Cold Resistance	0.0378 Ohms	0.04 Ohms
Melting I²t	2.27	1.812
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Approval Agency	CSA, UL	cULus
Operating Temperature	Not specified	-55°C ~ 125°C

Engineering Selection Recommendations

The 0874002.MXEP is the designated manufacturer-recommended substitute for the obsolete 0672002.MXE. Selection of this alternative is supported by the following factors:

Product Status: The 0874002.MXEP maintains active production status, ensuring long-term availability and supply chain continuity.

Regulatory Compliance: The substitute achieves ROHS3 compliance, whereas the original component is non-compliant. This upgrade addresses modern environmental and regulatory requirements.

Certification: Both components carry recognized safety certifications (CSA/UL for the original; cULus for the substitute), confirming suitability for their respective markets.

Electrical Equivalence: Identical current rating, voltage rating, response time, and breaking capacity ensure functional interchangeability within the circuit design.

Physical Compatibility: Minor dimensional variations (0.142" vs. 0.154" diameter; 0.394" vs. 0.433" length) remain within typical mechanical tolerance for axial through-hole cartridge fuse mounting.

Frequently Asked Questions (FAQ)

Q: Can the 0874002.MXEP be used as a direct replacement for the 0672002.MXE?

A: Yes. Both components share identical electrical specifications: 2A current rating, 250V AC voltage rating, fast-blow response, and 50A breaking capacity. The substitute is the manufacturer-recommended alternative.

Q: What is the difference between glass and ceramic fuse elements?

A: Glass and ceramic are both acceptable fuse element materials for this current and voltage class. The ceramic element in the 0874002.MXEP provides equivalent electrical performance while offering improved compliance status and active production availability.

Q: Will the slightly smaller dimensions of the 0874002.MXEP affect mounting?

A: The dimensional difference (0.142" vs. 0.154" diameter; 0.394" vs. 0.433" length) is minor and remains within standard mechanical tolerance for axial through-hole cartridge fuse holders. Mechanical compatibility should be verified for the specific socket or holder design in your application.

Q: Is the 0874002.MXEP RoHS compliant?

A: Yes. The 0874002.MXEP is ROHS3 compliant, whereas the original 0672002.MXE is non-compliant. This represents an improvement in regulatory alignment.

Q: What certifications does the substitute carry?

A: The 0874002.MXEP carries cULus certification, confirming compliance with both Canadian and U.S. safety standards. The original component carried CSA and UL certifications.

Q: Are there differences in melting I²t values between the two components?

A: Yes. The 0874002.MXEP has a melting I²t of 1.812 compared to 2.27 for the original. Both values are within the acceptable range for 2A fast-blow fuses and do not affect functional substitution in standard applications.

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