Littelfuse 0257010.L Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0257010.L is a 10A 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. The fuse provides fast-blow protection with a 1kA breaking capacity and operates across the -40°C to 105°C temperature range. Due to its obsolete classification, direct substitution with an active equivalent part is necessary for new designs and system maintenance.

Substiute Parts

0257010.L

Littelfuse Inc.In Stock: 9390257010.L Datasheet

Current PartRFQ

0287010.PXCN

Littelfuse Inc.In Stock: 3231800287010.PXCN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0257010.L is determined by strict equivalence across the following critical parameters:

• Current Rating: 10 A (exact match required)
• Voltage Rating (DC): 32 V (exact match required)
• Package / Case: Blade, ATO/ATC (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 1 kA (exact match required)
• Fuse Type: Automotive (exact match required)
• Mounting Type: Requires Holder (exact match required)

The substitute part Littelfuse 0287010.PXCN meets all critical electrical and mechanical parameters. Dimensional variations (0.750" vs 0.752" length, 0.200" vs 0.201" width, 0.480" vs 0.484" height) remain within acceptable tolerances for ATO/ATC holder compatibility. The DC cold resistance specification (0.0077 Ohms) is identical across both parts.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0287010.PXCN is the direct active equivalent for the obsolete 0257010.L. Both parts are manufactured by Littelfuse Inc. and maintain identical electrical specifications, thermal characteristics, and mechanical form factors. The substitute part carries Active product status with UL approval certification, ensuring continued availability and compliance support. The 0287010.PXCN is available in bulk packaging with significantly higher inventory levels (323,127 pcs vs. 865 pcs), supporting both immediate procurement and long-term supply chain requirements. ROHS3 compliance is maintained across both parts, with the substitute part additionally carrying REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the 0287010.PXCN be used as a direct replacement for the 0257010.L in existing designs?

A: Yes. Both parts share identical electrical ratings (10A, 32VDC), response characteristics (Fast Blow), breaking capacity (1kA), and mechanical form factor (Blade, ATO/ATC). Dimensional tolerances between the parts remain compatible with standard ATO/ATC holder specifications.

Q: What is the significance of the product status change from Obsolete to Active?

A: The Active status of the 0287010.PXCN ensures ongoing manufacturer support, availability, and compliance documentation. This eliminates supply chain risk associated with obsolete components and provides access to current certification records.

Q: Are there differences in packaging between these parts?

A: The 0257010.L is packaged in a 50-piece configuration, while the 0287010.PXCN is supplied in bulk packaging. Both maintain identical component specifications; packaging format does not affect electrical or mechanical performance.

Q: Do the dimensional variations between parts affect holder compatibility?

A: No. The dimensional differences (0.750" to 0.752" length, 0.200" to 0.201" width, 0.480" to 0.484" height) fall within the tolerance range for ATO/ATC blade fuse holders and do not impact mechanical fit or electrical contact.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0257010.L and 0287010.PXCN are ROHS3 Compliant. The substitute part additionally carries REACH Unaffected status.