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Littelfuse 0230.500HXSW Equivalent & Substitute Parts
Part Overview
The Littelfuse 0230.500HXSW is a 500 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, making equivalent and substitute parts necessary for ongoing design support and component procurement. The fuse is rated for operation across -55°C to 125°C and carries CSA and UL approvals.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 0230.500HXSW |
| Manufacturer | Littelfuse Inc. |
| Series | 230 |
| Current Rating | 500 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 | 1.16 |
| DC Cold Resistance | 0.688 Ohms |
| Operating Temperature Range | -55°C ~ 125°C |
| Approval Agency | CSA, UL |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitute parts for the 0230.500HXSW are determined by the following critical parameters:
- Current Rating: 500 mA (exact match required)
- Voltage Rating - AC: 250 V (exact match required)
- Response Time: Slow Blow (exact match required)
- Fuse Type: Cartridge, Glass (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)
- Melting I²t: 1.16 (exact match required)
- Operating Temperature Range: -55°C ~ 125°C (exact match required)
All substitute parts listed below meet these electrical and mechanical parameters. Substitute parts with active product status and enhanced compliance certifications (CE, CSA, UL) and RoHS3 compliance provide additional advantages over the obsolete main part.
Parameter Comparison
| Parameter | 0230.500HXSW | 0230.500HXSP | 0230.500HXASP | 0230.500HXP | 0230.500MXF17P | 0230.500MXF32P | 0230.500MXP | 0230.500VXP | 0230.500VXSP |
|---|---|---|---|---|---|---|---|---|---|
| Current Rating (mA) | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Voltage Rating - AC (V) | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 |
| Voltage Rating - DC (V) | Not specified | 125 | 125 | 125 | 125 | 125 | 125 | 125 | 125 |
| Response Time | Slow Blow | Slow Blow | Slow Blow | Slow Blow | Slow Blow | Slow Blow | Slow Blow | Slow Blow | Slow Blow |
| Fuse Type | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass |
| Package / Case | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) | Cartridge, Non-Standard (Axial) |
| Size / Dimension | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) | 0.177" Dia x 0.571" L (4.50mm x 14.50mm) |
| Melting I²t | 1.16 | 1.16 | 1.16 | 1.16 | 1.16 | 1.16 | 1.16 | 1.16 | 1.16 |
| DC Cold Resistance (Ohms) | 0.688 | 0.6935 | 0.6935 | 0.6935 | 0.6935 | 0.6935 | 0.6935 | 0.6935 | 0.6935 |
| Breaking Capacity @ Rated Voltage | 35A | 35A AC, 10kA DC | 35A AC, 10kA DC | 35A AC, 10kA DC | 35A AC, 10kA DC | 35A AC, 10kA DC | 35A AC, 10kA DC | 35A AC, 10kA DC | 35A AC, 10kA DC |
| Operating Temperature Range | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Approval Agency | CSA, UL | CE, CSA, UL | CE, CSA, UL | CE, CSA, UL | CE, CSA, UL | CE, CSA, UL | CE, CSA, UL | CE, CSA, UL | CE, CSA, UL |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
All substitute parts listed are active Littelfuse Series 230 components with identical electrical and mechanical specifications to the obsolete 0230.500HXSW. The substitute parts provide the following advantages:
- Active product status ensures ongoing availability and manufacturing support
- Enhanced approval certifications (CE added to existing CSA and UL)
- RoHS3 compliance for regulatory alignment with modern procurement standards
- Improved DC breaking capacity (10kA DC vs. unspecified for main part)
- Marginally lower DC cold resistance (0.6935 Ohms vs. 0.688 Ohms)
Selection among substitute parts should be based on packaging requirements (Bulk vs. standard) and inventory availability. All substitute parts are electrically and mechanically interchangeable with the 0230.500HXSW in through-hole axial fuse applications.
Frequently Asked Questions (FAQ)
Q: Can any of these substitute parts directly replace the 0230.500HXSW?
A: Yes. All listed substitute parts meet the critical electrical parameters (500 mA, 250 V AC, slow-blow response) and mechanical specifications (4.50mm x 14.50mm axial cartridge) required for direct replacement in the same circuit application.
Q: What is the difference between the substitute part numbers?
A: The substitute parts differ in packaging designation (HXSP, HXASP, HXP, MXF17P, MXF32P, MXP, VXP, VXSP) but maintain identical electrical and thermal characteristics. These designations reflect internal Littelfuse manufacturing and packaging variations. All parts are functionally equivalent.
Q: Why do substitute parts specify 125 V DC rating when the main part does not?
A: The 0230.500HXSW does not specify a DC voltage rating in the provided data. Substitute parts explicitly rate 125 V DC operation, providing additional design flexibility for applications requiring DC circuit protection. This does not affect AC-only applications.
Q: Are there compliance differences between the main part and substitutes?
A: Yes. The 0230.500HXSW carries CSA and UL approvals and is RoHS non-compliant. All substitute parts carry CE, CSA, and UL approvals and are RoHS3 compliant, meeting current regulatory requirements for new designs and procurement.
Q: What is the significance of the DC cold resistance difference?
A: The main part specifies 0.688 Ohms while substitute parts specify 0.6935 Ohms. This marginal difference (approximately 0.8% higher) is within normal manufacturing tolerance and does not affect circuit performance in standard fuse applications.
Q: Can I use these parts interchangeably in existing designs?
A: Yes, for through-hole axial mounting applications. The identical current rating, voltage rating, response time, and physical dimensions ensure mechanical and electrical compatibility. Verify that your circuit board layout accommodates the axial lead configuration.
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