43020-0400 – MOLEX

Overview

The Molex 43020-0400 Micro-Fit 3.0 plug housing is a critical component for reliable wire-to-wire connections in power applications, offering a robust 4-position configuration with a 3.0mm pitch. Its UL 94 V-0 flammability rating and 350V voltage rating underscore its suitability for demanding environments. A key design consideration for engineers is balancing the high current carrying capacity of 5A per contact against potential thermal rise within densely packed enclosures; proper airflow and conductor gauge selection are paramount to prevent exceeding the +105°C maximum operating temperature and ensuring long-term system integrity.

Key Features

• 4 Position, 2 Row Configuration
• 3.0 mm (0.118 in) Pitch
• Panel Mount, Straight Mounting Angle
• Crimp Termination Style
• 5 A Current Rating
• UL 94 V-0 Flammability Rating
• Black Nylon Housing, 30.2 mm x 12.3 mm x 15.3 mm

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Power distribution in compact automotive modules
• Signal integrity in industrial control interfaces
• Low-voltage DC power sequencing for consumer electronics
• Internal power interconnects in medical devices