BK-AMXL-300 Equivalent & Substitute Parts

Part Overview

The BK-AMXL-300 is a 300 A automotive fuse rated for 125 V DC operation with bolt mount configuration and Auto Link package type. Manufactured by Eaton - Electronics Division, this component is classified as Active product status. The fuse is designed for automotive electrical protection applications requiring high current interruption capacity. Substitute parts may be required due to inventory availability, supply chain considerations, or design revision updates while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

BK-AMXL-300

Eaton - Electronics DivisionIn Stock: 1122BK-AMXL-300 Datasheet

Current PartRFQ

BK-AMX-300

Eaton - Electronics DivisionIn Stock: 1282BK-AMX-300 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK-AMXL-300 is determined by strict equivalence across the following critical parameters:

Current Rating: 300 A (exact match required)

Voltage Rating - DC: 125 V (exact match required)

Fuse Type: Automotive (exact match required)

Mounting Type: Bolt Mount (exact match required)

Package / Case: Auto Link (exact match required)

Breaking Capacity @ Rated Voltage: 3 kA (exact match required)

Operating Temperature Range: -40°C ~ 105°C (exact match required)

DC Cold Resistance: 0.00016 Ohms (exact match required)

Physical Dimensions: 0.630" L x 0.472" W x 0.335" H / 16.00 mm x 12.00 mm x 8.50 mm (exact match required)

Regulatory Compliance: cURus and UL approval (exact match required)

Environmental Compliance: ROHS3 Compliant (exact match required)

The substitute part BK-AMX-300 meets all specified parameters and qualifies as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the BK-AMXL-300 and BK-AMX-300 are Active status products manufactured by Eaton - Electronics Division with identical electrical and mechanical specifications. Both components carry cURus and UL regulatory approvals and maintain ROHS3 compliance. The parts are functionally interchangeable for applications requiring 300 A automotive fuse protection at 125 V DC with bolt mount configuration and Auto Link packaging.

Selection between these parts may be based on inventory availability. The BK-AMXL-300 maintains 1060 pieces in stock, while the BK-AMX-300 maintains 1238 pieces in stock. Both parts satisfy identical performance requirements and regulatory requirements for automotive electrical protection circuits.

Frequently Asked Questions (FAQ)

Q: Can BK-AMX-300 be used as a direct replacement for BK-AMXL-300?

A: Yes. The BK-AMX-300 is a parametric equivalent with identical current rating (300 A), voltage rating (125 V DC), fuse type (Automotive), mounting configuration (Bolt Mount), package type (Auto Link), breaking capacity (3 kA), operating temperature range (-40°C ~ 105°C), DC cold resistance (0.00016 Ohms), physical dimensions (0.630" L x 0.472" W x 0.335" H), and regulatory approvals (cURus, UL). Both parts are ROHS3 compliant and Active status.

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

A: Substitution eligibility requires exact matching of: current rating (300 A), DC voltage rating (125 V), fuse type (Automotive), mounting type (Bolt Mount), package type (Auto Link), breaking capacity (3 kA), operating temperature range (-40°C ~ 105°C), DC cold resistance (0.00016 Ohms), physical dimensions, and regulatory approvals (cURus, UL).

Q: Are there differences between the AMXL and AMX series designations?

A: The parts belong to different series (AMXL versus AMX). However, all specified electrical, mechanical, and regulatory parameters are identical, making them functionally equivalent for the specified application.

Q: What is the physical footprint compatibility?

A: Both parts share identical dimensions of 0.630" L x 0.472" W x 0.335" H (16.00 mm x 12.00 mm x 8.50 mm) and bolt mount configuration, ensuring mechanical compatibility in existing circuit board layouts and enclosure designs.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both BK-AMXL-300 and BK-AMX-300 are ROHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements for electronic component manufacturing and distribution.