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Molex Mini-Fit Jr. 4.2mm PCB Header Connector Kit — 5557/5559, 2–12 Pin
A comprehensive Molex Mini-Fit Jr. 4.2mm PCB header connector kit — through-hole PCB mount headers in 2 to 12 pin configurations, both vertical and right-angle orientations. These PCB headers are the board-side mating connector for Molex Mini-Fit Jr. cable assemblies — solder to your PCB and connect the cable housing. The standard for PC power supply PCB connectors, motor driver power inputs, and high-current PCB power connections.
Kit Contents
- Vertical PCB headers: 2, 3, 4, 5, 6, 8, 10, 12-pin
- Right-angle PCB headers: 2, 3, 4, 5, 6, 8, 10, 12-pin
Key Specifications
- Series: Molex Mini-Fit Jr. (5557/5559) | Pitch: 4.2mm
- Mounting: Through-hole PCB (vertical and right-angle)
- Current rating: 9A per contact
- Mating: Molex Mini-Fit Jr. cable housing
- Compliance: RoHS compliant
Typical Applications
- PC power supply PCB power input header
- Motor driver PCB power connector
- Industrial power electronics PCB header
- Battery pack PCB power connector
- High-current PCB power distribution header

