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0SPF025.TXS Equivalent & Substitute Parts
Part Overview
The 0SPF025.TXS is a 25A 1 kVDC fuse cartridge from Littelfuse Inc.'s POWR-GARD® SPF-S series, designed for solar photovoltaic applications. This part is discontinued at DiGi Electronics, necessitating identification of active equivalent models that maintain the same electrical and mechanical specifications for seamless system integration.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Current Rating | 25A |
| Voltage Rating (DC) | 1 kVDC |
| Fuse Type | Cartridge |
| Response Time | Fast Blow |
| Package / Case | 5AG, 10mm x 38mm (Midget) |
| Mounting Type | Requires Holder |
| Size / Dimension | 0.406" Dia x 1.500" L (10.31mm x 38.10mm) |
| Breaking Capacity @ Rated Voltage | 50kA |
| DC Cold Resistance | 0.0037 Ohms |
| Melting I²t | 2433 |
| Approval Agencies | CE, CSA, IEC, gPV, UL |
Substitute Part Grouping Explanation
Substitution of the 0SPF025.TXS is based on strict equivalence of the following critical parameters:
- Current Rating: 25A (exact match required)
- Voltage Rating: 1 kVDC (exact match required)
- Fuse Type: Cartridge (exact match required)
- Response Time: Fast Blow (exact match required)
- Package / Case: 5AG, 10mm x 38mm Midget (exact match required)
- Mounting Type: Requires Holder (exact match required)
- Physical Dimensions: 0.406" Dia x 1.500" L (exact match required)
The 0SPF025.H from Littelfuse Inc. satisfies all substitution criteria. Both parts share identical electrical ratings, physical dimensions, fuse classification, and mechanical mounting requirements. The 0SPF025.H is currently active in inventory and available in bulk packaging.
Parameter Comparison
| Parameter | 0SPF025.TXS (Main Part) | 0SPF025.H (Substitute) |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Current Rating (Amps) | 25A | 25A |
| Voltage Rating - DC | 1 kVDC | 1 kVDC |
| Fuse Type | Cartridge | Cartridge |
| Response Time | Fast Blow | Fast Blow |
| Package / Case | 5AG, 10mm x 38mm (Midget) | 5AG, 10mm x 38mm (Midget) |
| Size / Dimension | 0.406" Dia x 1.500" L (10.31mm x 38.10mm) | 0.406" Dia x 1.500" L (10.31mm x 38.10mm) |
| Mounting Type | Requires Holder | Requires Holder |
| Applications | Solar (Photovoltaic) | Solar (Photovoltaic) |
| DC Cold Resistance | 0.0037 Ohms | 0.004 Ohms |
| Breaking Capacity @ Rated Voltage | 50kA | 20kA |
| Product Status | Discontinued at DiGi Electronics | Active |
| Approval Agencies | CE, CSA, IEC, gPV, UL | CE, CSA, UL, VDE |
| RoHS Status | Not specified | ROHS3 Compliant |
Engineering Selection Recommendations
The 0SPF025.H is the direct equivalent and substitute for the discontinued 0SPF025.TXS. Both components are manufactured by Littelfuse Inc. and maintain identical current, voltage, and physical specifications critical for 1 kVDC photovoltaic system applications.
The 0SPF025.H offers the advantage of active product status with current inventory availability and ROHS3 compliance certification. Both parts maintain CE, CSA, and UL certifications, ensuring compliance with applicable standards for DC protection devices in solar installations.
The 0SPF025.H is available in bulk packaging, supporting both prototype and production-level deployments.
Frequently Asked Questions (FAQ)
Q: Are the 0SPF025.TXS and 0SPF025.H mechanically interchangeable? A: Yes. Both components feature identical 5AG 10mm x 38mm (Midget) package dimensions and require the same fuse holder. Physical interchangeability is complete.
Q: What is the difference in breaking capacity between these parts? A: The 0SPF025.TXS has a breaking capacity of 50kA at rated voltage, while the 0SPF025.H has 20kA. For applications within the 20kA specification, both parts function identically. Application circuits must be evaluated if breaking capacity above 20kA is required.
Q: Do both parts support solar photovoltaic applications? A: Yes. Both the 0SPF025.TXS and 0SPF025.H are specified for solar photovoltaic applications and carry the required gPV certification (where applicable).
Q: What are the compliance differences between these parts? A: The 0SPF025.H carries ROHS3 and REACH certifications. The 0SPF025.TXS certification status for these attributes is not provided. Both parts comply with CE, CSA, and UL standards.
Q: Can I use the 0SPF025.H as a direct drop-in replacement? A: Yes, for all practical purposes within the specified 20kA breaking capacity range. The electrical ratings, physical dimensions, and fuse response characteristics are identical.
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