Littelfuse 0257025.L Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0257025.L is a 25A 32VDC automotive blade fuse designed for ATO/ATC holder applications. This part carries an Obsolete product status, making identification of active equivalent components essential for ongoing system support and procurement planning. The fuse provides fast-blow response characteristics with a breaking capacity of 1kA at rated voltage and operates across a temperature range of -40°C to 105°C. ROHS3 compliance and cULus approval certify its suitability for automotive electrical protection circuits.

Substiute Parts

0257025.L

Littelfuse Inc.In Stock: 10490257025.L Datasheet

Current PartRFQ

0287025.PXCN

Littelfuse Inc.In Stock: 3974260287025.PXCN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0257025.L is determined by strict equivalence across the following critical parameters:

• Current Rating: 25 A (exact match required)
• Voltage Rating - DC: 32 V (exact match required)
• Package / Case: Blade, ATO/ATC (exact match required)
• Fuse Type: Automotive (exact match required)
• Melting I²t: 1080 (exact match required)
• DC Cold Resistance: 0.00252 Ohms (exact match required)
• Operating Temperature Range: -40°C to 105°C (exact match required)

The Littelfuse 0287025.PXCN meets all substitution criteria as a direct equivalent. Both components share identical electrical characteristics, thermal performance, and mechanical form factor. The substitute part operates under Active product status with expanded approval certifications (CSA, UL) compared to the obsolete original.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0287025.PXCN is the direct substitute for the obsolete 0257025.L. Both components are manufactured by Littelfuse Inc. and maintain identical electrical and thermal specifications. The substitute part carries Active product status, ensuring continued availability and supply chain stability. Approval certifications for the substitute (CSA, UL) provide expanded regulatory coverage compared to the original cULus certification. Both parts maintain ROHS3 compliance and are suitable for direct replacement in automotive electrical protection applications requiring 25A 32VDC fast-blow fuse protection in ATO/ATC blade holders.

Frequently Asked Questions (FAQ)

Q: Can the 0287025.PXCN be used as a direct replacement for the 0257025.L?

A: Yes. Both fuses share identical current rating (25A), voltage rating (32VDC), package type (Blade ATO/ATC), response time (Fast Blow), melting I²t (1080), and operating temperature range (-40°C to 105°C). Physical dimensions are equivalent within manufacturing tolerance (original: 19.05mm x 5.08mm x 12.19mm; substitute: 19.10mm x 5.10mm x 12.30mm). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between the two part numbers?

A: The 0257025.L is classified as Obsolete, while the 0287025.PXCN is Active. The substitute part is packaged in Bulk format compared to the original 50-piece packaging. The substitute carries expanded regulatory approvals (CSA, UL) versus the original cULus certification. Electrical performance and thermal characteristics are identical.

Q: Are there any compatibility concerns with existing ATO/ATC holders?

A: No. Both fuses conform to the Blade, ATO/ATC package standard. Physical dimensions are equivalent within standard manufacturing tolerances, ensuring proper fit and electrical contact in all ATO/ATC blade fuse holders.

Q: What certifications apply to the substitute part?

A: The 0287025.PXCN carries CSA and UL approvals. Both the original and substitute maintain ROHS3 compliance and EAR99 export classification.

Q: Is the DC cold resistance identical between both parts?

A: Yes. Both the 0257025.L and 0287025.PXCN maintain a DC cold resistance of 0.00252 Ohms, ensuring equivalent electrical performance in circuit protection applications.