M20-9990445

Headers, Male Pins Overview

The Harwin M20-9990445 is a single-row, vertical pin header connector from the M20 series. It features a 2.54 mm pitch and provides four contacts for board-to-board or wire-to-board connections. Designed for through-hole mounting, the unit utilizes brass contacts with gold plating to ensure reliable signal transmission. The housing is constructed from black nylon (PA6T) rated UL94 V-0. It supports a current rating of 3A per contact and operates within a temperature range of -40°C to +105°C.

Headers, Male Pins Feature Summary

• Vertical orientation facilitates direct board stacking applications.
• Gold-plated brass contacts provide corrosion resistance and low contact impedance.
• UL94 V-0 rated nylon insulation ensures flame retardancy and thermal stability.

Headers, Male Pins Applications

• Interconnecting printed circuit boards in compact electronic assemblies
• Wire-to-board termination for signal and power distribution
• Prototyping and development board interfaces

Headers, Male Pins Procurement Notes

Verify the specific part number M20-9990445 against official Harwin documentation to confirm the single-row, four-position configuration. Ensure that the required mating stacking heights align with the available options: 10.04mm, 10.64mm, 11.04mm, and 16.54mm. Confirm that the through-hole termination style matches the target PCB layout requirements before finalizing procurement.

Headers, Male Pins Selection Notes

Select this component when a vertical, non-shielded header is required for low-current signal routing. The 2.54 mm pitch is standard for general-purpose interconnects. Consider the 3A current rating and 105°C maximum operating temperature for environmental compatibility. Verify that the unshrouded design does not conflict with adjacent mechanical constraints or mating connector geometries in the assembly.

Headers, Male Pins Part Context

This connector belongs to the Harwin M20 series, which offers various row counts and configurations. The M20-9990445 specifically represents the four-contact variant. It is designed to mate with corresponding socket connectors, such as the M20-7820446, to form complete interconnection systems. The series is characterized by its robust construction and standardized dimensions for widespread industrial use.

Headers, Male Pins Replacement Considerations

Direct substitutes must match the 2.54 mm pitch, single-row, four-pin, vertical through-hole specification. Verify that alternative components maintain identical current ratings and temperature ranges. Ensure physical compatibility regarding housing width and terminal length to guarantee proper PCB footprint alignment and mating engagement.