Littelfuse 0677002.MXEP Ceramic Axial Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0677002.MXEP is a 2A 250VAC ceramic cartridge fuse with axial through-hole mounting. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The fuse provides slow-blow response characteristics suitable for applications requiring transient current protection in AC/DC circuits rated up to 250V.

Key Parameters

Parameter	Value
Current Rating	2 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Ceramic
Response Time	Slow Blow
Mounting Type	Through Hole
Package / Case	Cartridge, Non-Standard (Axial)
Size / Dimension	0.154" Dia x 0.433" L (3.90mm x 11.00mm)
Breaking Capacity @ Rated Voltage	35A
DC Cold Resistance	0.035 Ohms
Approval Agency	CSA, UL, VDE
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 0677002.MXEP is determined by strict equivalence across the following critical parameters:

Current Rating: 2 A (exact match required)
Voltage Rating: 250 V AC (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Cartridge, Non-Standard (Axial) (exact match required)

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents (Littelfuse Series): Parts from the same manufacturer with identical electrical and mechanical specifications but different packaging or product status.

Cross-Manufacturer Parametric Equivalents: Parts from alternative manufacturers meeting all critical electrical and mechanical parameters with compatible form factors.

Parameter Comparison

Parameter	0677002.MXEP (Main)	0877002.MRET1P	0677002.MXE	0675002.MXE	8020.0517.PT
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse	SCHURTER Inc.
Current Rating (Amps)	2 A	2 A	2 A	2 A	2 A
Voltage Rating - AC	250 V	250 V	250 V	250 V	250 V
Fuse Type	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Cartridge, Non-Standard (Axial)	Cartridge, Non-Standard (Axial)	Cartridge, Non-Standard (Axial)	Cartridge, Non-Standard (Axial)	Cartridge, Non-Standard (Axial)
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)	0.154" Dia x 0.433" L (3.90mm x 11.00mm)	0.154" Dia x 0.433" L (3.90mm x 11.00mm)	0.154" Dia x 0.433" L (3.90mm x 11.00mm)
Breaking Capacity @ Rated Voltage	35A	35A	35A	50A	35A
Melting I²t	20.8	24.6	20.8	6.7	32
DC Cold Resistance	0.035 Ohms	0.035 Ohms	0.035 Ohms	0.0405 Ohms	Not specified
Product Status	Obsolete	Active	Active	Active	Active
Approval Agency	CSA, UL, VDE	cULus, VDE	CSA, UL, VDE	CSA, UL	CQC, cURus, VDE
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute - 0677002.MXE (Littelfuse Inc.): This part is the direct equivalent to 0677002.MXEP, differing only in packaging (Bulk vs. standard). It maintains identical electrical specifications, mechanical dimensions, and regulatory certifications (CSA, UL, VDE). Product status is Active, ensuring long-term availability. This is the preferred substitute for direct replacement.

Secondary Substitute - 0877002.MRET1P (Littelfuse Inc.): This part meets all critical electrical parameters and maintains ROHS3 compliance with cULus and VDE certifications. Physical dimensions differ slightly (0.142" Dia x 0.394" L vs. 0.154" Dia x 0.433" L), requiring mechanical compatibility assessment. Melting I²t is higher (24.6 vs. 20.8), indicating slightly different thermal response. Product status is Active with higher inventory availability.

Cross-Manufacturer Substitute - 8020.0517.PT (SCHURTER Inc.): This part provides parametric equivalence across all critical electrical specifications with identical physical dimensions. Regulatory certifications include CQC, cURus, and VDE. Melting I²t is higher (32 vs. 20.8). Product status is Active. This option is suitable when Littelfuse-specific sourcing is not required.

Not Recommended - 0675002.MXE (Littelfuse): While this part shares the same current, voltage, and fuse type, it is RoHS non-compliant and has significantly lower melting I²t (6.7 vs. 20.8), indicating different thermal response characteristics. Use only if legacy system requirements explicitly allow non-compliant components.

Frequently Asked Questions (FAQ)

Q: Can 0877002.MRET1P be used as a direct replacement for 0677002.MXEP?

A: 0877002.MRET1P meets all critical electrical parameters (2A, 250VAC, Slow Blow, Ceramic Cartridge). However, physical dimensions differ: 0.142" Dia x 0.394" L versus 0.154" Dia x 0.433" L. Mechanical compatibility with the fuse holder must be confirmed before substitution.

Q: What is the difference between 0677002.MXEP and 0677002.MXE?

A: These parts are electrically and mechanically identical. The primary difference is packaging: 0677002.MXEP uses standard packaging while 0677002.MXE is supplied in Bulk. Both maintain ROHS3 compliance and identical regulatory certifications.

Q: Why is 0675002.MXE not recommended as a substitute?

A: Although 0675002.MXE shares the same current rating and voltage, it is RoHS non-compliant and has a significantly lower melting I²t value (6.7 vs. 20.8), resulting in different thermal response characteristics. This part should only be used if legacy system requirements explicitly permit non-compliant components.

Q: Can the SCHURTER 8020.0517.PT replace the Littelfuse 0677002.MXEP?

A: Yes. The SCHURTER 8020.0517.PT meets all critical electrical specifications and maintains identical physical dimensions. It carries CQC, cURus, and VDE certifications. This cross-manufacturer substitute is suitable when Littelfuse-specific sourcing is not required.

Q: What parameters must match exactly for substitution?

A: Current Rating (2A), Voltage Rating (250VAC), Fuse Type (Cartridge, Ceramic), Response Time (Slow Blow), Mounting Type (Through Hole), and Package/Case (Cartridge, Non-Standard Axial) must remain unchanged. Physical dimensions should be compatible with existing fuse holders.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message