Littelfuse 0675005.MXEP Ceramic Axial Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0675005.MXEP is a 5A 250VAC ceramic cartridge fuse with axial through-hole mounting. This component 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 tolerance before circuit protection activation.

Key Parameters

Parameter	Value
Current Rating	5 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Ceramic
Response Time	Slow Blow
Mounting Type	Through Hole
Package / Case	Cartridge, Non-Standard (Axial)
Breaking Capacity @ Rated Voltage	50 A
Size / Dimension	0.154" Dia x 0.433" L (3.90mm x 11.00mm)
DC Cold Resistance	0.0113 Ohms
Approval Agency	CSA, UL

Substitute Part Grouping Explanation

Substitution eligibility for the 0675005.MXEP is determined by the following critical parameters:

Current Rating: 5 A (exact match required)
Voltage Rating (AC): 250 V (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 from Littelfuse Inc. and parametric equivalents from alternative manufacturers. All listed substitutes maintain identical electrical ratings and mechanical form factors to ensure functional interchangeability within the specified application envelope.

Parameter Comparison

Parameter	0675005.MXEP (Main)	0875005.MXEP	0675005.MXE	0677005.MXE	8020.0521.PT
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	SCHURTER Inc.
Current Rating (Amps)	5 A	5 A	5 A	5 A	5 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)
Breaking Capacity @ Rated Voltage	50 A	50 A	50 A	50 A	40 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)	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)
DC Cold Resistance	0.0113 Ohms	0.00954 Ohms	0.0113 Ohms	0.014 Ohms	Not specified
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant
Approval Agency	CSA, UL	cULus	CSA, UL	CSA, UL, VDE	CQC, cURus, VDE

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 0675005.MXEP, the 0875005.MXEP from Littelfuse Inc. is the primary substitute. This part maintains identical electrical specifications, carries active product status, and holds ROHS3 compliance with cULus certification. Physical dimensions differ slightly (0.142" Dia x 0.394" L versus 0.154" Dia x 0.433" L), requiring mechanical fit verification in existing PCB layouts or fuse holders.

The 0675005.MXE provides parametric equivalence with identical dimensions and electrical ratings to the main part, maintaining CSA and UL approvals. However, this part carries RoHS non-compliant status, limiting suitability for new designs subject to environmental regulations.

The 0677005.MXE offers parametric equivalence with expanded approval agency coverage (CSA, UL, VDE) and active product status. RoHS non-compliance restricts application in regulated environments. Melting I²t value of 140 differs from the main part specification of 58.8.

The 8020.0521.PT from SCHURTER Inc. provides cross-manufacturer substitution with identical mechanical form factor and electrical ratings. This part holds ROHS3 compliance and multi-agency certification (CQC, cURus, VDE). Breaking capacity is rated at 40A versus 50A for Littelfuse alternatives, and operating temperature range is specified as -20°C to 70°C.

Frequently Asked Questions (FAQ)

Q: Can the 0875005.MXEP be used as a direct replacement for the 0675005.MXEP?

A: The 0875005.MXEP is electrically equivalent with identical current, voltage, and response characteristics. Physical dimensions differ slightly, requiring verification that the smaller cartridge (0.142" Dia x 0.394" L) fits existing fuse holder specifications. Mechanical compatibility must be confirmed before substitution.

Q: What is the difference between the Littelfuse and SCHURTER alternatives?

A: Both manufacturers provide 5A 250VAC ceramic axial fuses with identical electrical ratings and form factors. The SCHURTER 8020.0521.PT has a lower breaking capacity (40A versus 50A) and narrower operating temperature range (-20°C to 70°C). Littelfuse alternatives maintain 50A breaking capacity and broader temperature tolerance.

Q: Are all substitute parts RoHS compliant?

A: The 0875005.MXEP and 8020.0521.PT are ROHS3 compliant. The 0675005.MXE and 0677005.MXE are RoHS non-compliant. For applications requiring environmental compliance, select only ROHS3-compliant alternatives.

Q: Which substitute has the broadest regulatory approval?

A: The 0677005.MXE carries approvals from CSA, UL, and VDE. The 8020.0521.PT holds certifications from CQC, cURus, and VDE. Selection depends on specific regional or application requirements.

Q: Does the DC cold resistance variation affect substitution suitability?

A: All substitute parts maintain DC cold resistance values within the range of 0.00954 to 0.014 Ohms. These variations are within acceptable tolerance for ceramic cartridge fuse applications and do not preclude functional substitution.

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