M20-7851042

Overview

The Harwin M20-7851042 is a dual in-line header connector from the M20 series, designed for vertical through-hole mounting. It features a 2.54 mm (0.100 inch) pitch with 10 positions per row, totaling 20 contacts arranged in two rows. The connector utilizes male pin terminals with tin plating on the mating interface and tail. Constructed with a black polyamide (PA6T/nylon 6T) insulator rated UL94 V-0, it supports a working temperature range of -40°C to +105°C. The unit is supplied in bulk packaging and is currently active.

Feature Summary

• Vertical board-to-board or cable connection capability via through-hole solder termination
• Dual in-line configuration with 10+10 positions for high-density signal routing
• Tin-plated brass contacts ensure reliable conductivity and corrosion resistance
• UL94 V-0 flammability rating provides enhanced safety for electronic assemblies

Applications

• Industrial control system interconnections
• Consumer electronics internal wiring
• Telecommunications equipment backplanes
• Automotive electronic module interfaces

Procurement Notes

Verify the specific ordering suffix against the official Harwin datasheet to confirm contact plating and insulation material specifications. Ensure the selected variant matches the required vertical orientation and through-hole termination style. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm current production status and availability before finalizing procurement plans.

Selection Notes

Select this component when a vertical, dual-row header with a 2.54 mm pitch is required for through-hole assembly. The tin-plated contacts are suitable for general-purpose applications where gold plating is not strictly necessary. Consider the 3A current rating per contact and the -40°C to +105°C operating range to ensure compatibility with the target environmental conditions and electrical loads.

Part Context

This connector belongs to the Harwin M20 series, a widely used family of rectangular connectors known for their reliability and versatility. The M20 series offers various configurations including headers, sockets, and wire housings in both single and dual in-line formats. This specific model represents a standard vertical header option within that extensive portfolio.

Replacement Considerations

M20-7851042P