JCAS050.XP Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The JCAS050.XP is a 50 A automotive fuse rated for 32 V AC and 32 V DC operation, manufactured by Littelfuse Inc. under the JCASE™ 495 series. This slow-blow fuse is designed for automotive applications requiring a holder-mounted installation with Auto Link package configuration. The part is currently active in production with 706 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same fuse category and voltage specifications.

Substiute Parts

JCAS050.XP

Littelfuse Inc.In Stock: 745JCAS050.XP Datasheet

Current PartRFQ

JCAS050.X

Littelfuse Inc.In Stock: 1008JCAS050.X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the JCAS050.XP is determined by strict equivalence across the following critical parameters:

• Current Rating: 50 A (exact match required)
• Voltage Rating - AC: 32 V (exact match required)
• Voltage Rating - DC: 32 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Type: Automotive (exact match required)
• Package / Case: Auto Link (exact match required)
• Size / Dimension: 0.555" L x 0.472" W x 1.063" H (exact match required)

The JCAS050.X meets all substitution criteria as a parametric equivalent within the Littelfuse automotive fuse portfolio.

Parameter Comparison

Engineering Selection Recommendations

Both the JCAS050.XP and JCAS050.X are active production parts manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for automotive applications. Selection between these parts may be based on inventory availability, with JCAS050.X currently showing higher stock levels at 900 units compared to 706 units for JCAS050.XP. Both parts are suitable for direct substitution in automotive fuse holder applications requiring 50 A protection at 32 V AC/DC with slow-blow response characteristics.

Frequently Asked Questions (FAQ)

Q: Can JCAS050.X be used as a direct replacement for JCAS050.XP?

A: Yes. Both parts are identical in current rating (50 A), voltage ratings (32 V AC/DC), response time (slow blow), package type (Auto Link), and physical dimensions (0.555" L x 0.472" W x 1.063" H). They are parametric equivalents suitable for direct substitution.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution requires exact equivalence in current rating, AC and DC voltage ratings, response time classification, fuse type (automotive), package configuration (Auto Link), and physical dimensions. Deviation in any of these parameters disqualifies a part from substitution.

Q: Are there any compliance or certification differences between these parts?

A: No. Both JCAS050.XP and JCAS050.X maintain identical RoHS3 compliance and REACH unaffected status. Both are active production parts from Littelfuse Inc.

Q: What is the significance of the Auto Link package designation?

A: Auto Link is the mechanical package configuration that defines the physical form factor and holder compatibility. Both substitute parts use identical Auto Link packaging, ensuring mechanical interchangeability in automotive fuse holder applications.

Q: Does the color designation (Red) affect substitution?

A: Color is a visual indicator of the 50 A current rating in automotive fuse standards. Both parts are red, confirming identical current rating specifications and maintaining consistency with automotive fuse color coding conventions.