Littelfuse 0675.400MXEP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0675.400MXEP is a 400 mA, 250 V AC/DC ceramic cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in axial configuration. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The fuse provides 50 A breaking capacity at rated voltage with CSA and UL approval certifications.

Substiute Parts

0675.400MXEP

Littelfuse Inc.In Stock: 9480675.400MXEP Datasheet

Current PartRFQ

0875.400MXEP

Littelfuse Inc.In Stock: 7430875.400MXEP Datasheet

DirectRFQ

0675.400MXE

Littelfuse Inc.In Stock: 7440675.400MXE Datasheet

Parametric EquivalentRFQ

0677.400MXE

Littelfuse Inc.In Stock: 7560677.400MXE Datasheet

Parametric EquivalentRFQ

8020.0510.PT

SCHURTER Inc.In Stock: 37958020.0510.PT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0675.400MXEP is determined by the following critical parameters:

• Current Rating: 400 mA (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 Substitutes (Littelfuse): Parts from the same manufacturer with identical electrical ratings and response characteristics but different series designations or packaging configurations.

Parametric Equivalents (Cross-Manufacturer): Parts from alternative manufacturers meeting identical electrical specifications and mechanical form factors.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 0875.400MXEP: Active product status with cULus certification. Dimensional variation (0.142" Dia x 0.394" L vs. 0.154" Dia x 0.433" L) requires mechanical fit verification in existing mounting configurations. Identical electrical ratings and 50 A breaking capacity. ROHS3 compliant with operating temperature range of -55°C to 125°C.

Littelfuse 0675.400MXE: Active product status with CSA and UL certifications matching the original part. Identical dimensions and electrical characteristics. RoHS non-compliant status requires compliance assessment for new designs. Identical 50 A breaking capacity and 0.3035 Ohms DC cold resistance.

Littelfuse 0677.400MXE: Active product status with CSA, UL, and VDE certifications. Identical dimensions to the original part. Breaking capacity reduced to 35 A and DC cold resistance increased to 0.36 Ohms. ROHS3 compliant. Suitable for applications where 35 A breaking capacity is acceptable.

SCHURTER 8020.0510.PT: Active product status with CQC, cURus, and VDE certifications. Cross-manufacturer equivalent with identical dimensions and electrical ratings. Breaking capacity of 35 A and operating temperature range of -20°C to 70°C. ROHS3 compliant. Highest inventory availability (3781 Pcs).

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0875.400MXEP be used as a direct replacement for the 0675.400MXEP?

A: The 0875.400MXEP meets all electrical specifications (400 mA, 250 V AC, slow-blow ceramic cartridge fuse). However, dimensional differences (0.142" Dia x 0.394" L vs. 0.154" Dia x 0.433" L) require verification of mechanical fit in the existing mounting footprint before implementation.

Q: What is the difference between the 0675.400MXE and the 0675.400MXEP?

A: Both parts are from the Littelfuse 675 series with identical electrical ratings, dimensions, and DC cold resistance. The primary difference is RoHS compliance status: the 0675.400MXEP is ROHS3 compliant, while the 0675.400MXE is RoHS non-compliant. For new designs, the ROHS3 compliant version is recommended.

Q: Why does the 0677.400MXE have a lower breaking capacity (35 A vs. 50 A)?

A: The 0677.400MXE is from a different Littelfuse series with different internal construction characteristics, resulting in a 35 A breaking capacity. This part is suitable only for applications where the lower breaking capacity meets system requirements.

Q: Is the SCHURTER 8020.0510.PT suitable for all applications requiring the 0675.400MXEP?

A: The SCHURTER 8020.0510.PT meets all critical electrical and mechanical parameters (400 mA, 250 V AC, slow-blow ceramic cartridge, identical dimensions). The 35 A breaking capacity and operating temperature range of -20°C to 70°C must be verified against application requirements. Cross-manufacturer substitution requires validation of thermal and electrical performance in the specific circuit.

Q: What packaging options are available for these substitute parts?

A: The 0675.400MXEP is supplied in non-specified packaging. The 0875.400MXEP, 0677.400MXE, and 8020.0510.PT are available in bulk packaging. Packaging configuration should be confirmed with the supplier based on procurement requirements.

Q: Are all substitute parts ROHS3 compliant?

A: The 0875.400MXEP, 0677.400MXE, and 8020.0510.PT are ROHS3 compliant. The 0675.400MXE is RoHS non-compliant. For applications requiring RoHS compliance, select from the compliant alternatives.