Littelfuse 0505010.UXEP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0505010.UXEP is a 10A ceramic cartridge fuse rated for 450V AC operation, designed for through-hole mounting in 3AB/3AG package format. This fast-blow fuse is actively manufactured and maintained in production inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

0505010.UXEP

Littelfuse Inc.In Stock: 10740505010.UXEP Datasheet

Current PartRFQ

0505010.MXEP

Littelfuse Inc.In Stock: 19920505010.MXEP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0505010.MXEP qualifies as a parametric equivalent to the 0505010.UXEP based on the following critical substitution parameters:

• Current Rating: Identical at 10 A
• Voltage Rating - AC: Identical at 450 V
• Fuse Type: Identical ceramic cartridge construction
• Response Time: Identical fast-blow characteristic
• Package / Case: Identical 3AB, 3AG, 1/4" x 1-1/4" (Axial) format
• Mounting Type: Identical through-hole configuration
• Breaking Capacity: Identical at 20kA AC, 1kA DC
• Melting I²t: Identical at 91
• DC Cold Resistance: Identical at 0.0167 Ohms
• Operating Temperature Range: Identical -55°C ~ 125°C
• Physical Dimensions: Identical 0.275" Dia x 1.288" L (6.99mm x 32.72mm)
• RoHS Status: Both ROHS3 Compliant

The 0505010.MXEP includes additional DC voltage rating specification (250V DC) not explicitly stated in the 0505010.UXEP datasheet parameters, but this does not restrict substitution in AC-primary applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 0505010.UXEP and 0505010.MXEP are active production parts manufactured by Littelfuse Inc. and maintain identical electrical and mechanical specifications for AC circuit protection applications. The 0505010.MXEP carries additional regulatory approvals (CE, cULus, SEMKO) and explicit DC voltage rating documentation (250V DC), making it suitable for dual-voltage applications. Both parts are ROHS3 compliant and carry MSL Level 1 rating, indicating no moisture sensitivity restrictions during storage and handling.

Selection between these parts should be based on procurement availability, packaging requirements (the 0505010.UXEP is available in standard packaging while the 0505010.MXEP is supplied in bulk), and application voltage requirements. For AC-only circuits rated at 450V, either part provides equivalent protection. For applications requiring documented DC voltage capability, the 0505010.MXEP is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the 0505010.MXEP be used as a direct replacement for the 0505010.UXEP in existing designs?

A: Yes. Both parts share identical current rating (10A), AC voltage rating (450V), fuse type (ceramic cartridge), response time (fast-blow), package format (3AB/3AG), and breaking capacity (20kA AC, 1kA DC). Physical dimensions and mounting characteristics are identical, enabling direct substitution in through-hole applications.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format and documented specifications. The 0505010.UXEP is supplied in standard packaging, while the 0505010.MXEP is supplied in bulk. The 0505010.MXEP includes explicit DC voltage rating (250V DC) and additional regulatory approvals (CE, cULus, SEMKO) not listed for the 0505010.UXEP.

Q: Are both parts suitable for AC circuit protection at 450V?

A: Yes. Both the 0505010.UXEP and 0505010.MXEP are rated for 450V AC operation with identical fast-blow response characteristics and 20kA AC breaking capacity.

Q: What is the physical package size for these fuses?

A: Both parts use the 3AB/3AG cartridge format with dimensions of 0.275" diameter by 1.288" length (6.99mm x 32.72mm). This is a standard through-hole axial package compatible with conventional fuse holders.

Q: Are these parts RoHS compliant?

A: Yes. Both the 0505010.UXEP and 0505010.MXEP are ROHS3 compliant and carry MSL Level 1 rating, indicating no moisture sensitivity restrictions.