Littelfuse 0298175.ZXB Automotive Fuse 175A 32VDC Auto Link Equivalent & Substitute Parts

Part Overview

The Littelfuse 0298175.ZXB is a 175A automotive fuse rated for 32VDC operation with slow-blow response characteristics and bolt-mount installation. This MEGA® series fuse is designed for automotive electrical circuit protection in high-current applications. The part maintains active product status with full compliance to RoHS3 and REACH standards. Equivalent and substitute parts are identified based on identical electrical ratings, mechanical specifications, and functional performance parameters to ensure direct interchangeability in automotive circuit protection applications.

Substiute Parts

0298175.ZXB

Littelfuse Inc.In Stock: 11100298175.ZXB Datasheet

Current PartRFQ

0298175.UXT

Littelfuse Inc.In Stock: 12530298175.UXT Datasheet

Parametric EquivalentRFQ

0298175.ZXA

Littelfuse Inc.In Stock: 14490298175.ZXA Datasheet

Parametric EquivalentRFQ

0298175.ZXEH

Littelfuse Inc.In Stock: 21500298175.ZXEH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0298175.ZXB are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution criteria include:

• Current Rating: 175 A (exact match required)
• Voltage Rating: 32 V DC (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Bolt Mount (exact match required)
• Package / Case: Auto Link (exact match required)
• Breaking Capacity: 2 kA (exact match required)
• Melting I²t: 168000 (exact match required)
• Operating Temperature Range: -40°C to 125°C (exact match required)
• DC Cold Resistance: 0.000294 Ohms (exact match required)
• Physical Dimensions: 1.149" L × 0.750" W × 0.390" H (exact match required)
• Compliance: RoHS3 and REACH standards (exact match required)

All substitute parts listed below meet these criteria and are manufactured by Littelfuse Inc. within the MEGA® series.

Parameter Comparison

Engineering Selection Recommendations

All four part numbers—0298175.ZXB, 0298175.UXT, 0298175.ZXA, and 0298175.ZXEH—are functionally equivalent and maintain active product status. Each part is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for automotive applications.

The primary distinction among these parts is the approval agency certification. The 0298175.ZXB, 0298175.UXT, and 0298175.ZXA carry cULus certification, while the 0298175.ZXEH carries UL certification. Both certification pathways are recognized for automotive fuse applications. Selection between these parts should be based on specific circuit design requirements, existing certification documentation, and supply chain availability rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Are all listed substitute parts electrically interchangeable with the 0298175.ZXB?

A: Yes. All substitute parts (0298175.UXT, 0298175.ZXA, 0298175.ZXEH) share identical electrical ratings of 175A at 32VDC, slow-blow response characteristics, 2kA breaking capacity, and 168000 melting I²t values. They are direct electrical equivalents.

Q: Do the substitute parts have the same physical dimensions?

A: Yes. All parts measure 1.149" L × 0.750" W × 0.390" H (29.20mm × 19.05mm × 9.90mm) and use the Auto Link package configuration with bolt-mount installation. They are mechanically interchangeable.

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

A: Both certifications are recognized standards for automotive fuse applications. cULus indicates certification by UL to both Canadian and U.S. standards, while UL indicates certification to U.S. standards only. The choice between them depends on the geographic scope of your application and existing design documentation.

Q: Can I substitute 0298175.ZXEH for 0298175.ZXB in an existing design?

A: Yes, provided your design documentation and certification requirements accept UL certification in place of cULus certification. All other electrical, mechanical, and thermal parameters are identical.

Q: Are all substitute parts currently in stock?

A: Inventory levels vary. The 0298175.ZXB has 1031 units, 0298175.UXT has 1188 units, 0298175.ZXA has 1370 units, and 0298175.ZXEH has 2100 units available as new original stock.

Q: What is the DC cold resistance specification used for?

A: DC cold resistance (0.000294 Ohms) is a measure of the fuse element's resistance at room temperature. This parameter is critical for calculating voltage drop across the fuse in high-current circuits and ensuring proper circuit performance.