Littelfuse 0875005.MRET1P Equivalent & Substitute Parts

Part Overview

The Littelfuse 0875005.MRET1P is a 5A 250VAC ceramic cartridge fuse with axial through-hole mounting. This slow-blow fuse is designed for circuit protection in applications requiring reliable overcurrent interruption at rated voltage. The part maintains active product status with 798 units in current inventory. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and safety certifications align with the original specification.

Substiute Parts

0875005.MRET1P

Littelfuse Inc.In Stock: 8630875005.MRET1P Datasheet

Current PartRFQ

C310T-SC-5-R-TR1

Eaton - Electronics DivisionIn Stock: 7789C310T-SC-5-R-TR1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Eaton C310T-SC-5-R-TR1 qualifies as a parametric equivalent based on the following critical substitution criteria:

• Current Rating: Identical at 5 A
• Voltage Rating (AC): Identical at 250 V
• Fuse Type: Identical ceramic cartridge construction
• Response Time: Identical slow-blow characteristic
• Package / Case: Identical non-standard axial cartridge form factor
• Mounting Type: Identical through-hole configuration
• Physical Dimensions: Identical at 0.142" Dia x 0.394" L (3.60mm x 10.00mm)
• Breaking Capacity: Identical at 50A
• Operating Temperature Range: Identical at -55°C ~ 125°C

These parameters define the functional and mechanical interchangeability of the substitute part within the same circuit protection application.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0875005.MRET1P and Eaton C310T-SC-5-R-TR1 maintain active product status and meet the core electrical and mechanical requirements for 5A 250VAC ceramic cartridge fuse applications. The Eaton substitute carries broader international safety certifications (CQC, cURus, KC, TUV, VDE) compared to the Littelfuse cULus approval. Both parts comply with RoHS directives. Selection between these parts should consider packaging format availability (Tape & Reel versus Cut Tape) and regional certification requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can the Eaton C310T-SC-5-R-TR1 directly replace the Littelfuse 0875005.MRET1P in existing designs?

A: Yes. Both parts share identical electrical ratings (5A, 250VAC), fuse type (ceramic cartridge), response characteristic (slow-blow), physical dimensions (0.142" Dia x 0.394" L), and breaking capacity (50A). Through-hole mounting compatibility is confirmed.

Q: What is the difference in packaging between these two parts?

A: The Littelfuse part is supplied in Tape & Reel (TR) format, while the Eaton equivalent is supplied in Cut Tape (CT) format. Both are suitable for component placement and assembly; packaging selection depends on production line requirements and inventory management practices.

Q: Are there differences in thermal performance between these substitutes?

A: Both parts operate across the identical temperature range of -55°C to 125°C. The Melting I²t values differ slightly (60.9 for Littelfuse versus 57.5 for Eaton) and DC Cold Resistance values differ (0.00954 Ohms versus 7.3 mOhms), but these variations remain within acceptable tolerances for equivalent slow-blow ceramic cartridge fuses at this current rating.

Q: Which certifications apply to each part?

A: The Littelfuse 0875005.MRET1P carries cULus certification. The Eaton C310T-SC-5-R-TR1 carries CQC, cURus, KC, TUV, and VDE certifications. Selection should align with regional regulatory requirements for the end application.

Q: Are both parts RoHS compliant?

A: Yes. The Littelfuse part is ROHS3 Compliant, and the Eaton part is RoHS Compliant. Both meet environmental compliance standards.