Littelfuse 0230.375VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.375VXP 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 CE, CSA, and UL approval agencies. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across compatible applications.

Substiute Parts

0230.375VXP

Littelfuse Inc.In Stock: 10110230.375VXP Datasheet

Current PartRFQ

0230.375HXP

Littelfuse Inc.In Stock: 10740230.375HXP Datasheet

Parametric EquivalentRFQ

0230.375MXP

Littelfuse Inc.In Stock: 14330230.375MXP 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 0230.375VXP are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents (Littelfuse Series 230): The parts 0230.375HXP and 0230.375MXP are parametric equivalents manufactured by Littelfuse Inc. within the same 230 series. These parts share identical electrical specifications: 375 mA current rating, 250 V AC / 125 V DC voltage ratings, slow-blow response, 35A AC / 10kA DC breaking capacity, 0.58 melting I²t, and matching physical dimensions (0.177" Dia x 0.571" L). All three parts maintain the same operating temperature range (-55°C ~ 125°C), approval certifications (CE, CSA, UL), and RoHS3 compliance. The primary distinction lies in internal construction or manufacturing process variants, which do not affect electrical performance or mechanical compatibility.

Manufacturer Recommended Substitute (Eaton Electronics Division): The part BK/C515-375-R is a manufacturer-recommended substitute from Eaton Electronics Division. This part matches the 375 mA current rating and 250 V AC voltage specification. However, it differs in the following parameters: package designation (2AG, 5mm x 15mm versus non-standard axial), physical dimensions (0.217" Dia x 0.598" L versus 0.177" Dia x 0.571" L), melting I²t (1.531 versus 0.58), DC cold resistance (0.81 Ohms versus 1.1685 Ohms), and breaking capacity specification (35A AC only, without DC rating). The BK/C515-375-R lacks a specified DC voltage rating and operating temperature range. Approval certifications include CSA and UL but exclude CE.

Parameter Comparison

Engineering Selection Recommendations

For Direct Electrical and Mechanical Compatibility: The Littelfuse 0230.375HXP and 0230.375MXP are direct substitutes for the 0230.375VXP. All three parts maintain identical electrical performance, physical dimensions, and approval certifications. Selection among these three Littelfuse variants depends on inventory availability and internal manufacturing process requirements specific to the application.

For Alternative Sourcing with Design Considerations: The Eaton BK/C515-375-R is a manufacturer-recommended alternative that shares the 375 mA current rating and 250 V AC voltage specification. However, this part introduces design trade-offs: increased physical dimensions (0.217" Dia x 0.598" L), higher melting I²t (1.531), lower DC cold resistance (0.81 Ohms), and absence of specified DC voltage rating and operating temperature range. The BK/C515-375-R lacks CE approval certification. Use of this substitute requires verification that the application circuit design accommodates the dimensional differences and can operate without explicit DC voltage and temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0230.375HXP and 0230.375MXP be used interchangeably with the 0230.375VXP? A: Yes. These three Littelfuse parts are parametric equivalents with identical electrical specifications, physical dimensions, and approval certifications. They are direct substitutes within the same 230 series.

Q: What are the key differences between the Littelfuse 0230.375VXP and the Eaton BK/C515-375-R? A: The primary differences are package designation (non-standard axial versus 2AG), physical dimensions (0.177" Dia x 0.571" L versus 0.217" Dia x 0.598" L), melting I²t (0.58 versus 1.531), DC cold resistance (1.1685 Ohms versus 0.81 Ohms), and certification scope (CE, CSA, UL versus CSA, UL only). The Eaton part lacks specified DC voltage rating and operating temperature range.

Q: Will the Eaton BK/C515-375-R fit in a circuit designed for the Littelfuse 0230.375VXP? A: Physical compatibility depends on the specific circuit board layout and fuse holder design. The Eaton part has larger dimensions (0.217" Dia x 0.598" L) compared to the Littelfuse part (0.177" Dia x 0.571" L). Mechanical fit must be confirmed before substitution.

Q: Are all substitute parts RoHS3 compliant? A: Yes. The Littelfuse 0230.375HXP, 0230.375MXP, and Eaton BK/C515-375-R are all ROHS3 compliant.

Q: What is the significance of the melting I²t difference between the Littelfuse and Eaton parts? A: Melting I²t is a measure of the thermal energy required to melt the fuse element. The Littelfuse parts (0.58) have lower melting I²t compared to the Eaton part (1.531), indicating faster thermal response. This difference affects the fuse's protective characteristics and must be considered in circuit protection design.

Q: Which substitute part should be selected for applications requiring CE certification? A: The Littelfuse 0230.375HXP or 0230.375MXP are the appropriate choices, as both maintain CE approval certification. The Eaton BK/C515-375-R does not include CE certification.