Littelfuse 0230.375DRT2P Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.375DRT2P is a 375 mA slow-blow glass cartridge fuse rated for 250 V AC and 125 V DC operation. This through-hole component is designed for circuit protection in applications requiring reliable overcurrent interruption with a non-standard axial cartridge form factor. The part maintains active product status with CE, CSA, and UL approvals, ensuring compliance with international safety standards. Substitute parts are identified when original inventory becomes unavailable or when equivalent electrical and mechanical specifications are required for system continuity.

Substiute Parts

0230.375DRT2P

Littelfuse Inc.In Stock: 10860230.375DRT2P Datasheet

Current PartRFQ

BK/C515-375-R

Eaton - Electronics DivisionIn Stock: 2123BK/C515-375-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0230.375DRT2P is determined by the following critical parameters:

• Current Rating: 375 mA (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Through Hole (exact match required)
• RoHS Compliance: ROHS3 Compliant (required for regulatory alignment)

The Eaton BK/C515-375-R meets all primary electrical specifications and maintains equivalent circuit protection performance. Physical dimensions vary slightly due to different cartridge form factors (non-standard axial versus 2AG standard), which may require mechanical accommodation in the host application.

Parameter Comparison

Engineering Selection Recommendations

The Eaton BK/C515-375-R serves as a direct electrical substitute for the Littelfuse 0230.375DRT2P based on matched current rating, AC voltage rating, response time classification, and fuse type. Both components maintain ROHS3 compliance and carry CSA and UL approvals, satisfying regulatory requirements for circuit protection applications.

Physical form factor differences exist between the non-standard axial cartridge (Littelfuse) and the 2AG standard cartridge (Eaton). The Eaton substitute exhibits slightly larger dimensions and lower DC cold resistance. These differences require verification of mechanical fit within the host application's fuse holder or cartridge receptacle before implementation.

The Littelfuse component specifies 125 V DC rating, while the Eaton substitute does not provide explicit DC voltage specification. Applications requiring confirmed DC voltage protection should reference the Eaton component's technical documentation to establish DC performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/C515-375-R be used as a direct replacement for the Littelfuse 0230.375DRT2P?

A: The Eaton component matches all primary electrical specifications: 375 mA current rating, 250 V AC voltage rating, slow-blow response time, and glass cartridge fuse type. Physical dimensions differ due to form factor variation (2AG versus non-standard axial). Mechanical compatibility with the existing fuse holder must be confirmed before substitution.

Q: What are the key differences between these two fuse cartridges?

A: The primary differences are physical dimensions and DC cold resistance. The Littelfuse component measures 4.50mm x 14.50mm with 1.1685 Ohms resistance, while the Eaton component measures 5.50mm x 15.20mm with 0.81 Ohms resistance. Electrical performance for AC circuit protection is equivalent.

Q: Are both components RoHS compliant?

A: Yes, both the Littelfuse 0230.375DRT2P and Eaton BK/C515-375-R are ROHS3 compliant, meeting environmental and hazardous substance restrictions.

Q: Which approval agencies certify these components?

A: The Littelfuse component carries CE, CSA, and UL approvals. The Eaton component carries CSA and UL approvals. Both meet North American and international safety standards for circuit protection devices.

Q: Does the Eaton substitute support DC voltage applications?

A: The Eaton BK/C515-375-R does not provide explicit DC voltage rating in the available specifications. The Littelfuse component specifies 125 V DC operation. DC application requirements should be confirmed with Eaton technical documentation before substitution.