M20-7881146

Overview

The M20-7881146 is a rectangular connector header from the Harwin M20 series, designed for board-to-board or cable applications. It features a vertical orientation with a 2.54 mm (0.100 inch) pin spacing and a dual inline configuration comprising 22 positions. The component utilizes square-shaped male pins with tin plating on both mating and tail sections, constructed from brass contacts housed in black polyamide insulation rated UL94 V-0. It supports through-hole solder termination and operates within a temperature range of -40°C to 105°C, providing a current rating of 3A per contact.

Feature Summary

• Dual inline layout facilitates high-density interconnections in compact electronic assemblies
• Vertical design enables direct board mounting without requiring additional height clearance
• Tin-plated brass contacts ensure reliable conductivity and corrosion resistance
• Polyamide housing provides mechanical stability and thermal endurance up to 105°C

Applications

• Industrial control systems requiring robust board-to-board connections
• Consumer electronics utilizing vertical header configurations
• Telecommunications equipment needing reliable signal transmission
• Automotive electronics operating in varied thermal environments

Procurement Notes

Verify the specific ordering suffix against the official Harwin datasheet to confirm exact pin count, row configuration, and termination style. Ensure compatibility with mating connectors regarding pitch and contact geometry. Confirm RoHS compliance status and material composition requirements for your specific application environment before finalizing procurement orders.

Selection Notes

Select this component when a vertical, dual-row header with 2.54mm pitch is required for through-hole assembly. Consider the 3A current rating and 105°C maximum operating temperature for suitability. Verify that the square pin shape and tin plating meet the mating interface specifications. Ensure the PCB footprint matches the specified dimensions for proper alignment and soldering.

Part Context

This part belongs to the M20 series, a widely used line of rectangular connectors known for their versatility in various industrial and commercial applications. The series offers multiple configurations including single and dual rows, different orientations, and various termination styles to suit diverse design needs.

Replacement Considerations

Consult the official Harwin M20 catalog for cross-reference options. Potential substitutes may include other M20 series variants with identical pitch but different pin counts or orientations. Ensure any replacement maintains the same electrical ratings and mechanical fit.