Littelfuse 0230002.DRT3SW Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230002.DRT3SW is a 2 A, 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 design support and production continuity. The substitute parts listed maintain the core electrical and mechanical specifications while offering improved product status and compliance certifications.

Key Parameters

Parameter	Value
Current Rating	2 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 Range	-55°C ~ 125°C
Melting I²t	30
DC Cold Resistance	0.0692 Ohms
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 0230002.DRT3SW is based on strict equivalence of the following electrical and mechanical parameters:

Current Rating: 2 A (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: 0.177" Dia x 0.571" L / 4.50mm x 14.50mm (exact match required)
Mounting Type: Through Hole, Axial (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Melting I²t: 30 (exact match required)

All substitute parts listed below meet these criteria. The primary differences among substitutes are packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Obsolete). Substitute parts also provide enhanced DC voltage rating (125 V DC) and improved regulatory certifications compared to the main part.

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Packaging	Product Status	Breaking Capacity AC	Breaking Capacity DC	DC Cold Resistance (Ω)	RoHS Status
0230002.DRT3SW	Littelfuse Inc.	2	250	—	Slow Blow	—	Obsolete	100A	—	0.0692	RoHS non-compliant
0230002.DRT3SP	Littelfuse Inc.	2	250	125	Slow Blow	Tape & Reel (TR)	Active	35A	10kA	0.0698	ROHS3 Compliant
0230002.DRT1P	Littelfuse Inc.	2	250	125	Slow Blow	Cut Tape (CT)	Active	35A	10kA	0.0698	ROHS3 Compliant
0230002.DRT2P	Littelfuse Inc.	2	250	125	Slow Blow	Tape & Reel (TR)	Active	35A	10kA	0.0698	ROHS3 Compliant
0230002.DRT2SP	Littelfuse Inc.	2	250	125	Slow Blow	Tape & Reel (TR)	Active	35A	10kA	0.0698	ROHS3 Compliant
0230002.DRT3P	Littelfuse Inc.	2	250	125	Slow Blow	Tape & Reel (TR)	Active	35A	10kA	0.0698	ROHS3 Compliant
0230002.MRT1SSP	Littelfuse Inc.	2	250	125	Slow Blow	Tape & Reel (TR)	Active	35A	10kA	0.0698	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically equivalent to the 0230002.DRT3SW and are suitable for direct replacement in applications requiring a 2 A, 250 V AC slow-blow glass cartridge fuse in axial through-hole configuration.

The primary selection criteria are:

Product Status: All substitute parts carry Active product status, ensuring long-term availability and manufacturing support, unlike the obsolete main part.

Regulatory Compliance: All substitute parts are ROHS3 compliant and carry CE, CSA, PSE, and UL certifications. The main part is RoHS non-compliant and carries only CSA, METI, and UL certifications.

Packaging Format: Selection between substitute parts depends on procurement and assembly requirements:

Cut Tape (CT) packaging: 0230002.DRT1P
Tape & Reel (TR) packaging: 0230002.DRT3SP, 0230002.DRT2P, 0230002.DRT2SP, 0230002.DRT3P, 0230002.MRT1SSP

DC Voltage Rating: All substitute parts provide 125 V DC rating, extending application flexibility beyond the main part's AC-only specification.

Frequently Asked Questions (FAQ)

Q: Can 0230002.DRT3SP, 0230002.DRT1P, 0230002.DRT2P, 0230002.DRT2SP, 0230002.DRT3P, and 0230002.MRT1SSP be used interchangeably with 0230002.DRT3SW?

A: Yes. All substitute parts maintain identical electrical ratings (2 A, 250 V AC), response characteristics (slow-blow), physical dimensions (0.177" Dia x 0.571" L), and mounting configuration (through-hole axial). The primary differences are packaging format and product status.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging (0230002.DRT1P) is supplied on continuous tape cut to specified lengths, suitable for manual or semi-automated assembly. Tape & Reel packaging (0230002.DRT3SP, 0230002.DRT2P, 0230002.DRT2SP, 0230002.DRT3P, 0230002.MRT1SSP) is wound on reels for automated pick-and-place assembly equipment. Selection depends on production assembly capabilities.

Q: Why do substitute parts have a 125 V DC rating while the main part does not?

A: The substitute parts are rated for both 250 V AC and 125 V DC operation, providing broader application compatibility. The main part specification lists only 250 V AC. This enhancement does not affect AC-only applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant. The main part (0230002.DRT3SW) is RoHS non-compliant. For applications requiring RoHS compliance, any of the substitute parts are suitable.

Q: What certifications do the substitute parts carry?

A: All substitute parts carry CE, CSA, PSE, and UL certifications. The main part carries CSA, METI, and UL certifications. Substitute parts provide expanded regulatory coverage.

Q: Are there inventory considerations when selecting a substitute?

A: Current inventory levels vary by part number. 0230002.DRT1P has the highest inventory (3962 Pcs), followed by 0230002.DRT3P (1407 Pcs). Availability should be confirmed with the supplier for production requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message