Littelfuse 0298100.ZXB Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0298100.ZXB is a 100 A automotive fuse rated for 32 V DC operation with slow-blow response characteristics. This MEGA® series component features bolt mount installation and is designed for automotive electrical circuit protection applications. The part maintains active product status with full compliance to RoHS3 and REACH regulations. Equivalent substitute parts are available to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

0298100.ZXB

Littelfuse Inc.In Stock: 11970298100.ZXB Datasheet

Current PartRFQ

0298100.UXT

Littelfuse Inc.In Stock: 12400298100.UXT Datasheet

Parametric EquivalentRFQ

0298100.ZXA

Littelfuse Inc.In Stock: 14050298100.ZXA Datasheet

Parametric EquivalentRFQ

0298100.ZXEH

Littelfuse Inc.In Stock: 51580298100.ZXEH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

All substitute parts for the 0298100.ZXB maintain identical electrical and mechanical specifications across the following critical parameters:

• Current Rating: 100 A
• Voltage Rating (DC): 32 V
• Fuse Type: Automotive
• Response Time: Slow Blow
• Mounting Type: Bolt Mount
• Package / Case: Auto Link
• Breaking Capacity @ Rated Voltage: 2 kA
• Melting I²t: 31100
• Operating Temperature Range: -40°C ~ 125°C
• DC Cold Resistance: 0.000562 Ohms
• Physical Dimensions: 1.149" L x 0.750" W x 0.390" H
• RoHS3 Compliance: Yes
• REACH Status: Unaffected

Substitution is valid when all parameters listed above match between the main part and substitute part. Variations in approval agency certification or inventory levels do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All four part numbers (0298100.ZXB, 0298100.UXT, 0298100.ZXA, and 0298100.ZXEH) are functionally equivalent for automotive fuse applications requiring 100 A at 32 V DC with slow-blow characteristics. Selection between these parts may be based on:

Approval Agency Certification: Parts 0298100.ZXB, 0298100.UXT, and 0298100.ZXA carry cULus certification. Part 0298100.ZXEH carries UL certification. Both certifications are recognized standards for automotive electrical components.

Inventory Availability: Part 0298100.ZXEH maintains the highest inventory level at 5090 pieces. Parts 0298100.ZXA (1307 pieces), 0298100.UXT (1192 pieces), and 0298100.ZXB (1167 pieces) are also available in quantity.

All parts maintain active product status and full compliance with RoHS3 and REACH regulations, confirming suitability for current and future automotive applications.

Frequently Asked Questions (FAQ)

Q: Can 0298100.UXT, 0298100.ZXA, and 0298100.ZXEH be used interchangeably with 0298100.ZXB?

A: Yes. All four parts share identical electrical ratings (100 A, 32 V DC), response characteristics (slow-blow), mechanical specifications (bolt mount, Auto Link package), and physical dimensions. They are direct functional equivalents.

Q: What is the difference between cULus and UL certification?

A: Both are recognized safety certifications for electrical components. cULus indicates certification by UL for both Canadian and U.S. standards. UL indicates certification for U.S. standards. The choice between them depends on application jurisdiction and regulatory requirements.

Q: Are the physical dimensions identical across all substitute parts?

A: Yes. All parts measure 1.149" L x 0.750" W x 0.390" H (29.20mm x 19.05mm x 9.90mm) and use the same Auto Link bolt mount package, ensuring mechanical compatibility in existing installations.

Q: Do all substitute parts meet the same environmental and compliance standards?

A: Yes. All four parts are ROHS3 compliant, REACH unaffected, and rated for operation across -40°C to 125°C. They meet identical regulatory requirements for automotive applications.

Q: Which part should be selected based on availability?

A: Part 0298100.ZXEH offers the highest inventory level. However, all parts are available in quantity. Selection should prioritize application-specific certification requirements and supply chain logistics.

Q: Is DC cold resistance a critical parameter for substitution?

A: Yes. All substitute parts maintain identical DC cold resistance of 0.000562 Ohms, ensuring equivalent electrical performance and heat dissipation characteristics in circuit protection applications.