Littelfuse 0230.750DRT2SW Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.750DRT2SW is a 750 mA, 250 V AC slow-blow glass cartridge fuse with axial through-hole mounting. This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and field replacement applications. Active alternatives within the Littelfuse 230 series provide enhanced compliance and expanded voltage ratings while maintaining core electrical and mechanical compatibility.

Substiute Parts

0230.750DRT2SW

Littelfuse Inc.In Stock: 8620230.750DRT2SW Datasheet

Current PartRFQ

0230.750DRT2SP

Littelfuse Inc.In Stock: 8780230.750DRT2SP Datasheet

DirectRFQ

0230.750DAT1P

Littelfuse Inc.In Stock: 8210230.750DAT1P Datasheet

Parametric EquivalentRFQ

0230.750DRT1P

Littelfuse Inc.In Stock: 109130230.750DRT1P Datasheet

Parametric EquivalentRFQ

0230.750DRT1SP

Littelfuse Inc.In Stock: 10210230.750DRT1SP Datasheet

Parametric EquivalentRFQ

0230.750DRT2P

Littelfuse Inc.In Stock: 10650230.750DRT2P Datasheet

Parametric EquivalentRFQ

0230.750DRT3P

Littelfuse Inc.In Stock: 7770230.750DRT3P Datasheet

Parametric EquivalentRFQ

0230.750DRT3SP

Littelfuse Inc.In Stock: 8880230.750DRT3SP Datasheet

Parametric EquivalentRFQ

0230.750MRT1SSP

Littelfuse Inc.In Stock: 9270230.750MRT1SSP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Current Rating: 750 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)
• Package / Case: Cartridge, Non-Standard (Axial) (exact match required)
• Size / Dimension: 0.177" Dia x 0.571" L (4.50mm x 14.50mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Melting I²t: 2.95 (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Substitute parts are grouped into two categories:

Direct Manufacturer Substitute: 0230.750DRT2SP provides identical electrical and mechanical specifications with enhanced DC voltage rating (125 V DC) and improved RoHS compliance (ROHS3 Compliant). Packaging differs (Tape & Reel vs. axial bulk).

Parametric Equivalents: 0230.750DAT1P, 0230.750DRT1P, 0230.750DRT1SP, 0230.750DRT2P, 0230.750DRT3P, and 0230.750MRT1SSP maintain all critical electrical and mechanical parameters. These parts are active products with ROHS3 compliance and expanded DC voltage ratings (125 V DC). Differences exist only in packaging format and minor resistance tolerances within acceptable engineering margins.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain electrical and mechanical equivalence to the 0230.750DRT2SW. Selection should be based on the following criteria:

For Direct Replacement: 0230.750DRT2SP is the primary direct substitute, offering identical electrical performance with enhanced DC voltage capability (125 V DC) and ROHS3 compliance. This part is active and carries expanded regulatory approvals (CE, CSA, UL).

For Active Product Continuity: 0230.750DRT1P, 0230.750DRT1SP, 0230.750DRT2P, 0230.750DRT3P, and 0230.750MRT1SSP are parametric equivalents suitable for new designs and ongoing production. All are active products with ROHS3 compliance and CE certification in addition to CSA and UL approvals.

For DC Applications: Parts with specified 125 V DC ratings (0230.750DRT2SP, 0230.750DRT1P, 0230.750DRT1SP, 0230.750DRT2P, 0230.750DRT3P, 0230.750MRT1SSP) are appropriate for circuits requiring DC voltage protection.

For AC-Only Applications: 0230.750DAT1P maintains AC-only specifications matching the original part and is suitable where DC voltage rating is not required.

Packaging Considerations: Tape & Reel (TR) packaging is standard for active products. Cut Tape (CT) format is available for 0230.750DRT1P. Packaging selection depends on assembly process requirements and order quantities.

Frequently Asked Questions (FAQ)

Q: Can 0230.750DRT2SP be used as a direct replacement for 0230.750DRT2SW?

A: Yes. Both parts share identical current rating (750 mA), AC voltage rating (250 V), response time (Slow Blow), fuse type (Cartridge, Glass), package type (Cartridge, Non-Standard Axial), physical dimensions (0.177" Dia x 0.571" L), melting I²t (2.95), and operating temperature range (-55°C ~ 125°C). The substitute offers enhanced DC voltage rating (125 V DC) and improved RoHS compliance (ROHS3).

Q: What is the difference between the parametric equivalents?

A: All parametric equivalents (0230.750DAT1P, 0230.750DRT1P, 0230.750DRT1SP, 0230.750DRT2P, 0230.750DRT3P, 0230.750MRT1SSP) maintain identical electrical and mechanical specifications. Differences exist only in packaging format (Tape & Reel vs. Cut Tape) and minor DC cold resistance tolerances (0.343 Ohms vs. 0.34 Ohms), which fall within acceptable engineering margins.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts are ROHS3 compliant. The original 0230.750DRT2SW is RoHS non-compliant. Substitution with active alternatives ensures compliance with current environmental regulations.

Q: Which substitute part should be used for DC applications?

A: Parts with specified 125 V DC ratings are appropriate for DC applications: 0230.750DRT2SP, 0230.750DRT1P, 0230.750DRT1SP, 0230.750DRT2P, 0230.750DRT3P, and 0230.750MRT1SSP. The original part and 0230.750DAT1P do not specify DC voltage ratings.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tape & Reel, Cut Tape, or bulk) does not affect electrical or mechanical performance. Selection is based on assembly process requirements and order quantities.

Q: Are all substitute parts certified by the same regulatory agencies?

A: Substitute parts carry expanded certifications. The original part is certified by CSA and UL. All substitute parts are certified by CE, CSA, and UL, providing broader regulatory coverage.

Q: Can 0230.750DAT1P be used in place of 0230.750DRT2SW?

A: Yes. Both parts share identical AC voltage rating (250 V), current rating (750 mA), response time (Slow Blow), fuse type (Cartridge, Glass), package type (Cartridge, Non-Standard Axial), physical dimensions, melting I²t, and operating temperature range. The substitute is an active product with ROHS3 compliance and expanded certifications (CE, CSA, UL).