Littelfuse 0257035.L Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0257035.L is a 35A automotive blade fuse rated for 32V DC operation, designed for ATO/ATC holder mounting. This part is classified as obsolete, making identification of active equivalent components essential for ongoing system support and procurement planning. The substitute part maintains identical electrical and mechanical specifications while offering improved availability through active product status.

Substiute Parts

0257035.L

Littelfuse Inc.In Stock: 9770257035.L Datasheet

Current PartRFQ

0287035.PXCN

Littelfuse Inc.In Stock: 1222040287035.PXCN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0287035.PXCN qualifies as a direct substitute for the 0257035.L based on the following critical parameters:

• Current Rating: Both parts rated at 35 A
• Voltage Rating: Both rated for 32 V DC
• Fuse Type: Both are automotive blade fuses
• Package / Case: Both use Blade, ATO/ATC form factor
• Melting I²t: Identical value of 2280
• DC Cold Resistance: Identical at 0.00161 Ohms
• Operating Temperature: Both operate across -40°C ~ 105°C
• RoHS Compliance: Both ROHS3 compliant

The 0287035.PXCN is manufactured by Littelfuse Inc. and maintains active product status, providing reliable long-term availability compared to the obsolete 0257035.L.

Parameter Comparison

Engineering Selection Recommendations

The 0287035.PXCN is the appropriate selection for applications currently specified with the 0257035.L. Both parts meet identical electrical and mechanical requirements for 35A automotive fuse applications at 32V DC. The substitute part carries active product status with broader regulatory approvals (CSA and UL certifications), ensuring continued availability and compliance support. The dimensional tolerance variance (0.752" L x 0.201" W x 0.484" H versus 0.750" L x 0.200" W x 0.480" H) remains within standard ATO/ATC blade fuse specifications and does not affect holder compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 0287035.PXCN be used as a direct replacement for the 0257035.L?

A: Yes. Both parts share identical current rating (35A), voltage rating (32V DC), fuse type (automotive blade), package form factor (ATO/ATC), melting I²t (2280), and DC cold resistance (0.00161 Ohms). They are mechanically and electrically interchangeable.

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

A: The primary difference is product status. The 0257035.L is obsolete, while the 0287035.PXCN is active. The substitute also carries expanded regulatory approvals (CSA and UL versus cULus) and is available in bulk packaging with significantly higher inventory levels.

Q: Will the 0287035.PXCN fit existing ATO/ATC fuse holders?

A: Yes. Both parts use the standard Blade, ATO/ATC package form factor. Dimensional variations (approximately 0.002" in length and width) fall within normal manufacturing tolerances for this fuse type and do not affect holder compatibility.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant. The 0287035.PXCN carries CSA and UL approvals, while the 0257035.L carries cULus approval. All certifications are suitable for automotive applications.

Q: What is the operating temperature range for both parts?

A: Both the 0257035.L and 0287035.PXCN operate across -40°C to 105°C, making them suitable for standard automotive environmental conditions.