Littelfuse 0230003.DRT1SW Glass Cartridge Fuse 3A 250VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230003.DRT1SW is a 3A 250VAC axial glass cartridge fuse rated for slow-blow response with a breaking capacity of 100A at rated voltage. This part is classified as obsolete and operates across a temperature range of -55°C to 125°C. Due to its obsolete status, equivalent and substitute parts from the active product line are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Current Rating	3 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	Cartridge, Non-Standard (Axial)
Mounting Type	Through Hole
Size / Dimension	0.177" Dia x 0.571" L (4.50mm x 14.50mm)
Operating Temperature	-55°C ~ 125°C
Melting I²t	77
DC Cold Resistance	0.038 Ohms
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the 0230003.DRT1SW is determined by the following critical parameters that must remain constant:

Current Rating: 3 A
Voltage Rating (AC): 250 V
Fuse Type: Cartridge, Glass
Response Time: Slow Blow
Package / Case: Cartridge, Non-Standard (Axial)
Size / Dimension: 0.177" Dia x 0.571" L (4.50mm x 14.50mm)
Mounting Type: Through Hole
Melting I²t: 77

All substitute parts listed maintain these core electrical and mechanical parameters. Substitute parts from the active product line include DC voltage ratings (125 V DC) and enhanced breaking capacity specifications not present in the original part. Packaging variants (Tape & Reel, Cut Tape) differ from the original but do not affect electrical performance or mechanical fit.

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity AC	Breaking Capacity DC	Melting I²t	DC Cold Resistance (Ohms)	Product Status	RoHS Status	Packaging
0230003.DRT1SW	Littelfuse	3	250	—	Slow Blow	100A	—	77	0.038	Obsolete	RoHS non-compliant	—
0230003.DRT1SP	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.DAT1P	Littelfuse Inc.	3	250	125	Slow Blow	100A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.DRT1P	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Cut Tape (CT)
0230003.DRT2P	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.DRT2SP	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.DRT3P	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.DRT3SP	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.MRT1EP	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)
0230003.MRT1SSP	Littelfuse Inc.	3	250	125	Slow Blow	35A	10kA	77	0.0383	Active	ROHS3 Compliant	Tape & Reel (TR)

Engineering Selection Recommendations

All listed substitute parts are active products from Littelfuse and maintain electrical and mechanical compatibility with the 0230003.DRT1SW. The primary distinction between substitute options is breaking capacity and packaging format.

For applications requiring 100A breaking capacity at rated voltage, 0230003.DAT1P is the direct parametric equivalent. This part carries ROHS3 compliance and is available in Tape & Reel packaging with 782 pieces in stock.

For applications where 35A breaking capacity is acceptable, 0230003.DRT1P, 0230003.DRT2P, 0230003.DRT3P, 0230003.DRT3SP, 0230003.MRT1EP, and 0230003.MRT1SSP are all suitable alternatives. These parts are available in Tape & Reel packaging with varying inventory levels. 0230003.DRT1P is available in Cut Tape packaging with the highest inventory (12,400 pieces).

All substitute parts include DC voltage rating (125 V DC) and carry CE, CSA, PSE, and UL approvals. All substitute parts are ROHS3 compliant, addressing the RoHS non-compliance status of the original part.

Frequently Asked Questions (FAQ)

Q: Can 0230003.DRT1SP be used as a direct replacement for 0230003.DRT1SW?

A: Yes. Both parts maintain identical current rating (3A), AC voltage rating (250V), fuse type (glass cartridge), response time (slow blow), package case (cartridge, non-standard axial), and physical dimensions (0.177" Dia x 0.571" L). The 0230003.DRT1SP is an active product with ROHS3 compliance and includes DC voltage rating (125V DC) not specified in the original part.

Q: What is the difference between 0230003.DAT1P and 0230003.DRT1P?

A: Both parts are parametrically equivalent with identical electrical specifications. The primary difference is packaging: 0230003.DAT1P is supplied in Tape & Reel format with 782 pieces in stock, while 0230003.DRT1P is supplied in Cut Tape format with 12,400 pieces in stock. Breaking capacity specifications differ: 0230003.DAT1P provides 100A AC breaking capacity, while 0230003.DRT1P provides 35A AC breaking capacity.

Q: Does packaging format affect electrical performance or mechanical fit?

A: No. Packaging format (Tape & Reel or Cut Tape) does not affect electrical performance or mechanical fit. The physical dimensions and electrical characteristics remain identical across all packaging variants.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status. The original 0230003.DRT1SW is RoHS non-compliant.

Q: What approvals do the substitute parts carry?

A: All substitute parts carry CE, CSA, PSE, and UL approvals. The original part carried CSA, METI, and UL approvals.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message