Littelfuse 0230.600DRT1SW Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.600DRT1SW is a 600 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 available from the active Littelfuse 230 series product line, offering improved compliance status and expanded voltage ratings while maintaining identical electrical and mechanical specifications for direct circuit replacement.

Key Parameters

Parameter	Value
Current Rating	600 mA
Voltage Rating (AC)	250 V
Voltage Rating (DC)	Not specified
Response Time	Slow Blow
Fuse Type	Cartridge, Glass
Package / Case	Cartridge, Non-Standard (Axial)
Mounting Type	Through Hole
Size / Dimension	0.177" Dia x 0.571" L (4.50mm x 14.50mm)
Breaking Capacity @ Rated Voltage	35A
Melting I²t	1.75
DC Cold Resistance	0.477 Ohms
Operating Temperature Range	-55°C to 125°C
Approval Agencies	CSA, UL
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the 0230.600DRT1SW are selected based on strict electrical and mechanical parameter equivalence within the Littelfuse 230 series. All substitute parts maintain the following critical parameters:

Current Rating: 600 mA
Voltage Rating (AC): 250 V
Response Time: Slow Blow
Fuse Type: Cartridge, Glass
Package / Case: Cartridge, Non-Standard (Axial)
Mounting Type: Through Hole
Size / Dimension: 0.177" Dia x 0.571" L (4.50mm x 14.50mm)
Melting I²t: 1.75
Operating Temperature Range: -55°C to 125°C

Substitute parts are grouped into two categories:

Direct Manufacturer Substitute (Packaging Variant):

0230.600DRT1SP: Identical electrical specifications with Tape & Reel packaging and active product status

Parametric Equivalents (Electrical & Mechanical Equivalence):

0230.600DRT1P
0230.600DRT2P
0230.600DRT2SP
0230.600DRT3P
0230.600DRT3SP
0230.600MRT1SSP

All substitute parts are active products with ROHS3 compliance and expanded DC voltage rating (125 V DC) compared to the original part.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage AC	Voltage DC	Response Time	Breaking Capacity (AC)	Melting I²t	DC Cold Resistance	Product Status	RoHS Status	Packaging	Inventory
0230.600DRT1SW	Littelfuse Inc.	600 mA	250 V	Not specified	Slow Blow	35A	1.75	0.477 Ω	Obsolete	RoHS non-compliant	Bulk	895 Pcs
0230.600DRT1SP	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	937 Pcs
0230.600DRT1P	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	669 Pcs
0230.600DRT2P	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	818 Pcs
0230.600DRT2SP	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	666 Pcs
0230.600DRT3P	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	1117 Pcs
0230.600DRT3SP	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	994 Pcs
0230.600MRT1SSP	Littelfuse Inc.	600 mA	250 V	125 V	Slow Blow	35A	1.75	0.4805 Ω	Active	ROHS3 Compliant	Tape & Reel	972 Pcs

Engineering Selection Recommendations

All listed substitute parts are direct electrical and mechanical equivalents to the 0230.600DRT1SW. Selection among substitute parts should be based on the following factors:

Product Status: The original part is obsolete. All substitute parts are active products with current manufacturing support and availability.

Compliance: The original part is RoHS non-compliant. All substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and procurement.

Voltage Rating Enhancement: Substitute parts include 125 V DC rating in addition to the 250 V AC rating, providing expanded application flexibility without electrical parameter changes.

Packaging: The original part uses bulk packaging. All substitute parts are supplied in Tape & Reel format, suitable for automated assembly processes.

Certification: All substitute parts maintain CSA and UL approvals with additional CE certification, ensuring compliance with international standards.

Inventory Availability: All substitute parts maintain adequate stock levels (666–1117 Pcs), ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 0230.600DRT1SW with any of the listed substitute parts?

A: Yes. All substitute parts maintain identical current rating (600 mA), AC voltage rating (250 V), response time (slow blow), fuse type (cartridge, glass), package case (cartridge, non-standard axial), mounting type (through hole), physical dimensions (0.177" Dia x 0.571" L), melting I²t (1.75), and operating temperature range (-55°C to 125°C). Direct circuit replacement is supported.

Q: What is the difference between the substitute parts?

A: All substitute parts are electrically and mechanically equivalent. Differences are limited to internal manufacturing variants (indicated by suffix letters P, SP, SSP) and packaging configurations. These variants do not affect electrical performance or circuit compatibility.

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

A: The original part specification does not include a DC voltage rating. Substitute parts explicitly specify 125 V DC rating, providing additional application data. This does not change AC circuit performance and expands the part's usability in DC applications.

Q: Is the change from bulk packaging to Tape & Reel packaging significant?

A: Packaging format affects procurement and assembly processes but not electrical or mechanical performance. Tape & Reel packaging is standard for automated assembly. Manual assembly applications can accommodate this format without functional impact.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant. The original part is RoHS non-compliant. This compliance upgrade is mandatory for new designs and many procurement specifications.

Q: Do substitute parts maintain the same approval certifications?

A: Substitute parts maintain CSA and UL approvals from the original part and add CE certification. All parts meet the same international safety and performance standards.

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