Littelfuse 0230.500DRT1SP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0230.500DRT1SP is a 500 mA, 250 V AC / 125 V DC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in non-standard axial configurations. This component is classified as Active product status and carries full regulatory compliance (CE, CSA, UL). Substitute parts are identified when packaging or inventory availability requires alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

0230.500DRT1SP

Littelfuse Inc.In Stock: 7420230.500DRT1SP Datasheet

Current PartRFQ

0230.500DRT1P

Littelfuse Inc.In Stock: 34310230.500DRT1P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0230.500DRT1SP is determined by strict equivalence across the following critical parameters:

• Current Rating: 500 mA (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Through Hole (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)
• Breaking Capacity @ Rated Voltage: 35A AC, 10kA DC (exact match required)
• Melting I²t: 1.16 (exact match required)
• DC Cold Resistance: 0.6935 Ohms (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Approval Agency: CE, CSA, UL (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The only permitted variation is packaging format (Tape & Reel versus Cut Tape), which does not affect electrical or mechanical performance in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0230.500DRT1SP and 0230.500DRT1P are Active product status components manufactured by Littelfuse Inc. and carry identical regulatory certifications (CE, CSA, UL) and RoHS3 compliance. Selection between these parts is determined solely by packaging requirements and inventory availability.

The 0230.500DRT1SP is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The 0230.500DRT1P is supplied in Cut Tape (CT) format, suitable for manual assembly or lower-volume applications. Both formats contain the identical fuse component with no variation in electrical performance, mechanical fit, or thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 0230.500DRT1P replace the 0230.500DRT1SP in my circuit?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (500 mA, 250 V AC / 125 V DC, slow-blow response) and mechanical dimensions (0.177" Dia x 0.571" L). The only difference is packaging format (Cut Tape versus Tape & Reel).

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on a continuous reel suitable for automated pick-and-place assembly equipment. Cut Tape (CT) packaging supplies individual components or small quantities cut from tape, suitable for manual assembly or prototyping. The fuse component itself is identical in both formats.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0230.500DRT1SP and 0230.500DRT1P are ROHS3 Compliant and carry CE, CSA, and UL certifications.

Q: What is the melting I²t value and why does it matter?

A: The melting I²t value of 1.16 defines the thermal energy required to melt the fuse element. This parameter must remain constant across substitute parts to ensure identical overcurrent protection characteristics in the application circuit.

Q: Can I use these fuses in both AC and DC circuits?

A: Yes. Both parts are rated for 250 V AC and 125 V DC operation. The voltage rating must not be exceeded in either AC or DC applications.

Q: What is the operating temperature range?

A: Both parts operate across -55°C to 125°C. Ambient temperature conditions must remain within this range for proper fuse operation.