Littelfuse 0230.375MXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.375MXP is a 375 mA, 250 V AC / 125 V DC glass cartridge fuse with slow-blow response characteristics. This through-hole component is designed for circuit protection in applications requiring non-standard axial cartridge packaging. The part maintains active product status with full compliance to RoHS3, CE, CSA, and UL standards. Equivalent and substitute parts are identified when identical electrical parameters and mechanical compatibility are maintained across the specified voltage and current ratings.

Substiute Parts

0230.375MXP

Littelfuse Inc.In Stock: 14330230.375MXP Datasheet

Current PartRFQ

0230.375HXP

Littelfuse Inc.In Stock: 10740230.375HXP Datasheet

Parametric EquivalentRFQ

BK/C515-375-R

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0230.375MXP are classified based on strict electrical and mechanical parameter matching:

Parametric Equivalent (Direct Substitute): Parts maintaining identical current rating (375 mA), AC voltage rating (250 V), DC voltage rating (125 V), response time (Slow Blow), fuse type (Cartridge, Glass), mounting type (Through Hole), and physical dimensions (4.50mm x 14.50mm) are classified as parametric equivalents. These parts are interchangeable without circuit redesign.

Manufacturer Recommended Substitute: Parts with matching current rating (375 mA), AC voltage rating (250 V), response time (Slow Blow), and fuse type (Cartridge, Glass) but differing in package form factor (2AG standard vs. non-standard axial) or DC voltage specification are classified as manufacturer-recommended substitutes. These require mechanical compatibility verification in the target application.

Parameter Comparison

Engineering Selection Recommendations

0230.375HXP (Littelfuse Inc.): This part is a direct parametric equivalent to the 0230.375MXP. All electrical parameters, mechanical dimensions, thermal characteristics, and regulatory certifications are identical. This substitute is suitable for direct replacement without circuit modification. Both parts maintain active product status and full RoHS3 compliance.

BK/C515-375-R (Eaton - Electronics Division): This part shares the core electrical specifications (375 mA, 250 V AC, Slow Blow, Cartridge Glass) but differs in package form factor (2AG standard vs. non-standard axial) and physical dimensions (5.50mm x 15.20mm vs. 4.50mm x 14.50mm). The DC voltage rating is not specified for this part. The melting I²t value (1.531) differs from the main part (0.58), indicating different thermal response characteristics. This substitute requires mechanical compatibility verification in the target application socket or holder. Regulatory compliance includes CSA and UL certifications; CE certification status is not specified.

Frequently Asked Questions (FAQ)

Q: Can the 0230.375HXP be used as a direct replacement for the 0230.375MXP?

A: Yes. The 0230.375HXP is a parametric equivalent with identical electrical ratings (375 mA, 250 V AC, 125 V DC), response time (Slow Blow), physical dimensions (4.50mm x 14.50mm), and regulatory certifications. Direct substitution is supported without circuit redesign.

Q: What are the key differences between the 0230.375MXP and BK/C515-375-R?

A: Both parts share the same current rating (375 mA), AC voltage rating (250 V), and response time (Slow Blow). However, they differ in package form factor (non-standard axial vs. 2AG standard), physical dimensions (4.50mm x 14.50mm vs. 5.50mm x 15.20mm), melting I²t (0.58 vs. 1.531), and DC cold resistance (1.1685 Ohms vs. 0.81 Ohms). The BK/C515-375-R does not specify a DC voltage rating.

Q: Is the BK/C515-375-R mechanically compatible with the 0230.375MXP socket?

A: Mechanical compatibility depends on the specific socket or holder design in the target application. The BK/C515-375-R uses standard 2AG packaging (5.50mm x 15.20mm) while the 0230.375MXP uses non-standard axial packaging (4.50mm x 14.50mm). Physical dimension verification is required before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 0230.375HXP and BK/C515-375-R are both ROHS3 compliant, matching the compliance status of the main part 0230.375MXP.

Q: What regulatory certifications apply to each part?

A: The 0230.375MXP and 0230.375HXP carry CE, CSA, and UL certifications. The BK/C515-375-R carries CSA and UL certifications; CE certification status is not specified in the provided data.