Littelfuse 0230.250DRT1SW Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.250DRT1SW is a 250 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. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and field replacement applications.

Substiute Parts

0230.250DRT1SW

Littelfuse Inc.In Stock: 8120230.250DRT1SW Datasheet

Current PartRFQ

0230.250DRT1SP

Littelfuse Inc.In Stock: 11810230.250DRT1SP Datasheet

DirectRFQ

0230.250DRT1P

Littelfuse Inc.In Stock: 11960230.250DRT1P Datasheet

Parametric EquivalentRFQ

0230.250DRT2P

Littelfuse Inc.In Stock: 10510230.250DRT2P Datasheet

Parametric EquivalentRFQ

0230.250DRT2SP

Littelfuse Inc.In Stock: 8000230.250DRT2SP Datasheet

Parametric EquivalentRFQ

0230.250DRT3P

Littelfuse Inc.In Stock: 11740230.250DRT3P Datasheet

Parametric EquivalentRFQ

0230.250DRT3SP

Littelfuse Inc.In Stock: 11820230.250DRT3SP Datasheet

Parametric EquivalentRFQ

0230.250MRT1SSP

Littelfuse Inc.In Stock: 7880230.250MRT1SSP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0230.250DRT1SW are determined by the following critical parameters that must remain constant:

• Current Rating: 250 mA
• Voltage Rating - AC: 250 V
• Response Time: Slow Blow
• Fuse Type: Cartridge, Glass
• Mounting Type: Through Hole
• Package / Case: Cartridge, Non-Standard (Axial)
• Size / Dimension: 0.177" Dia x 0.571" L (4.50mm x 14.50mm)
• Melting I²t: 0.216
• Operating Temperature: -55°C ~ 125°C

All substitute parts listed maintain these core electrical and mechanical parameters. Substitute parts may differ in packaging format, product status, compliance certifications, and DC voltage rating specifications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain electrical and mechanical compatibility with the 0230.250DRT1SW. Selection among substitute parts should be based on the following criteria:

Product Status: The 0230.250DRT1SW is obsolete. All listed substitute parts are active products with current manufacturing support and availability.

Compliance and Certifications: The original part carries CSA and UL approvals. All substitute parts extend certification coverage to include CE compliance in addition to CSA and UL, providing broader regulatory acceptance for international applications.

RoHS Compliance: The original part is RoHS non-compliant. All substitute parts are ROHS3 compliant, meeting current environmental and hazardous substance restrictions applicable to electronic components.

DC Voltage Rating: The original part does not specify a DC voltage rating. All substitute parts are rated for 125 V DC, providing defined performance in DC circuit applications.

Packaging Format: The original part is supplied in bulk packaging. Substitute parts are supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

Breaking Capacity: The original part specifies 35A breaking capacity at rated voltage. Substitute parts specify 35A AC and 10kA DC breaking capacity, providing enhanced fault current handling capability in DC applications.

Frequently Asked Questions (FAQ)

Q: Can the 0230.250DRT1SW be directly replaced with any of the listed substitute parts?

A: Yes. All substitute parts maintain the critical electrical parameters (250 mA current rating, 250 V AC voltage rating, slow-blow response) and mechanical specifications (cartridge glass fuse type, through-hole mounting, axial configuration, 4.50mm x 14.50mm dimensions) required for direct substitution.

Q: What is the primary difference between the original part and the substitute parts?

A: The original 0230.250DRT1SW is obsolete and RoHS non-compliant. All substitute parts are active products with ROHS3 compliance, extended certification coverage (CE, CSA, UL), and defined DC voltage ratings (125 V DC). Substitute parts are also supplied in Tape & Reel packaging format rather than bulk.

Q: Are there differences in electrical performance between the substitute parts?

A: No. All substitute parts share identical electrical characteristics: 250 mA current rating, 250 V AC voltage rating, 0.216 melting I²t, slow-blow response time, and -55°C to 125°C operating temperature range. DC cold resistance values are equivalent (2.43 Ohms versus 2.41 Ohms in the original part).

Q: Which substitute part should be selected for new designs?

A: Any of the listed substitute parts are suitable for new designs. Selection may be based on packaging requirements, inventory availability, or specific certification needs. All parts are electrically and mechanically interchangeable.

Q: Does the Tape & Reel packaging of substitute parts affect compatibility?

A: No. Tape & Reel packaging is a supply format used for automated assembly processes. The fuse component itself is identical regardless of packaging format. Manual assembly applications can use substitute parts supplied in Tape & Reel format without modification.

Q: What is the significance of the 125 V DC rating on substitute parts?

A: The 125 V DC rating specifies the maximum DC voltage at which the fuse operates safely. This parameter is not specified on the original part. Substitute parts with this rating provide defined performance in both AC and DC circuit applications.

Q: Are substitute parts backward compatible with existing circuit designs using the 0230.250DRT1SW?

A: Yes. Substitute parts maintain identical mechanical fit (same dimensions and axial cartridge configuration) and electrical performance (same current rating, voltage rating, and response characteristics). No circuit modifications are required.