M20-7852442

Overview

The M20-7852442 is a 48-position dual-row socket assembly from the Harwin M20 series. It features a 2.54 mm (0.1 in) pitch and utilizes through-hole termination for PCB mounting. The connector supports bottom or top entry mating configurations. Contact materials consist of phosphor bronze with gold plating on the mating interface, while the pins are tin-plated. The housing is constructed from black polyamide (PA6T), rated UL94 V-0, ensuring thermal stability within an operating temperature range of -40°C to 105°C. The unit weighs approximately 1.896 g.

Feature Summary

• Dual-row receptacle design supporting both bottom and top entry mating orientations
• Gold-plated phosphor bronze contacts ensure reliable signal transmission
• UL94 V-0 rated black PA6T insulation provides high thermal resistance

Applications

• High-density board-to-board interconnections
• Industrial control system module interfaces
• Telecommunications equipment backplanes

Procurement Notes

Verify component authenticity against official Harwin documentation due to potential supply chain variations. Confirm that the specific ordering suffix matches the required contact finish and housing color specifications. Ensure compatibility with mating header assemblies regarding stack height and pin length requirements before finalizing procurement orders.

Selection Notes

Select this model when a 48-position dual-row configuration is required with flexible entry options. Verify that the 2.54 mm pitch aligns with existing PCB layout constraints. Consider the through-hole installation method for mechanical robustness compared to surface-mount alternatives. Evaluate the gold contact finish against environmental exposure conditions to determine if it meets long-term reliability standards.

Part Context

This component belongs to the M20 series, which offers modular connectivity solutions. The part number structure indicates a 48-position socket assembly. It complements male headers within the same series to form complete interconnection systems. The design prioritizes space efficiency and secure locking mechanisms for demanding electronic applications.

Replacement Considerations

• M20-7852042
• M20-7851542

FAQ

Does the M20-7852442 support both top and bottom entry?

Yes, the connector design allows for mating from either the top or bottom side of the housing.

What is the material of the contact pins?

The contacts are made from phosphor bronze with gold plating on the mating area and tin plating on the termination pins.