Littelfuse 0230.375DRT2SW Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.375DRT2SW is a 375 mA, 250 V AC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in axial configuration. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The 0230 series fuses are non-standard axial cartridge types with a 4.50mm diameter and 14.50mm length, rated for breaking capacity of 35A at rated voltage.

Substiute Parts

0230.375DRT2SW

Littelfuse Inc.In Stock: 9140230.375DRT2SW Datasheet

Current PartRFQ

0230.375DRT2SP

Littelfuse Inc.In Stock: 10830230.375DRT2SP Datasheet

DirectRFQ

0230.375DRT1P

Littelfuse Inc.In Stock: 7540230.375DRT1P Datasheet

Parametric EquivalentRFQ

0230.375DRT1SP

Littelfuse Inc.In Stock: 12350230.375DRT1SP Datasheet

Parametric EquivalentRFQ

0230.375DRT2P

Littelfuse Inc.In Stock: 10860230.375DRT2P Datasheet

Parametric EquivalentRFQ

0230.375DRT3P

Littelfuse Inc.In Stock: 8040230.375DRT3P Datasheet

Parametric EquivalentRFQ

0230.375DRT3SP

LittelfuseIn Stock: 9500230.375DRT3SP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0230.375DRT2SW are grouped based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

• Current Rating: 375 mA (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Physical Dimensions: 4.50mm Dia x 14.50mm L (exact match required)
• Melting I²t: 0.58 (exact match required)
• Mounting Type: Through Hole, Axial (exact match required)

All substitute parts listed maintain these core electrical and mechanical parameters. The primary differences among substitutes relate to packaging format (bulk vs. tape & reel), product status (active vs. obsolete), and compliance certifications (RoHS status and regulatory approvals).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical equivalence to the 0230.375DRT2SW. Selection among substitutes should be based on the following factors:

Product Status: The original part (0230.375DRT2SW) is obsolete. All substitute parts listed are active products with ongoing manufacturer support and availability.

Compliance and Certifications: The original part carries CSA and UL approvals but is RoHS non-compliant. All substitute parts are ROHS3 compliant and carry CE, CSA, and UL certifications, meeting current regulatory requirements for new designs and systems requiring updated compliance standards.

Packaging Format: The original part is supplied in bulk packaging. Substitute parts are available in tape & reel format, which is standard for automated assembly processes. Selection between substitute part numbers (DRT1P, DRT1SP, DRT2P, DRT2SP, DRT3P, DRT3SP) should be based on internal packaging designation and procurement requirements, as all maintain identical electrical and mechanical specifications.

DC Voltage Rating: Substitute parts include a 125 V DC rating specification, providing additional operational flexibility compared to the original part specification which lists only AC voltage rating.

Frequently Asked Questions (FAQ)

Q: Can any of the listed substitute parts directly replace the 0230.375DRT2SW?

A: Yes. All listed substitute parts maintain the same current rating (375 mA), AC voltage rating (250 V), fuse type (cartridge, glass), response time (slow blow), physical dimensions (4.50mm x 14.50mm), melting I²t (0.58), and breaking capacity (35A). These are the critical parameters for functional equivalence in fuse applications.

Q: What is the difference between the various substitute part numbers (DRT1P, DRT2P, DRT3P, etc.)?

A: The differences between substitute part numbers relate to internal packaging designations and tape & reel configurations. All maintain identical electrical and mechanical specifications. Selection should be based on procurement requirements and assembly equipment compatibility.

Q: Why do the substitute parts include a 125 V DC rating when the original part does not?

A: The original part specification lists only AC voltage rating. Substitute parts provide both AC and DC voltage ratings, offering broader application flexibility. The 125 V DC rating does not affect AC-only applications and represents an enhancement in specification documentation.

Q: Is the change from RoHS non-compliant to ROHS3 compliant significant?

A: Yes, for new designs and systems subject to current regulatory requirements. ROHS3 compliance is mandatory in many markets and industries. For legacy system maintenance using the original part, RoHS compliance may not be a requirement, but ROHS3-compliant substitutes are recommended for long-term system support and future upgrades.

Q: Are there any mechanical or dimensional differences between the original and substitute parts?

A: No. All parts maintain identical physical dimensions (0.177" diameter x 0.571" length, or 4.50mm x 14.50mm), mounting type (through hole, axial), and package case designation (cartridge, non-standard axial).

Q: What certifications do the substitute parts carry?

A: All substitute parts carry CE, CSA, and UL certifications. The original part carries CSA and UL certifications. The addition of CE certification on substitutes reflects current regulatory requirements in European markets.