M20-7872046

Overview

The M20-7872046 is a dual-in-line (DIL) socket assembly manufactured by Harwin Inc. within the M20 series. It features a 20-position configuration with a 2.54 mm pitch and two rows of contacts. The component utilizes surface-mount technology (SMT) for vertical board attachment. Contact materials are specified as brass, with tin plating on the termination side. The housing is constructed from polyamide (PA6T), rated UL94 V-0 for flammability. Operating temperature ranges from -40°C to +105°C. Rated current is 3A per contact at 250V. Unit weight is approximately 1.818 g.

Feature Summary

• Dual-entry design allows mating from both top and bottom sides of the PCB.
• Vertical SMT mounting facilitates automated placement and compact board integration.
• Square contact shape ensures secure retention and alignment during mating.

Applications

• Board-to-board interconnections requiring dual-sided access
• Wire-to-board assemblies utilizing DIL female sockets
• High-density electronic modules needing vertical SMT headers

Procurement Notes

Verify the specific ordering suffix against the official Harwin datasheet to confirm contact plating and entry type. Confirm RoHS compliance status through the manufacturer's environmental documentation. Check for end-of-life notifications or obsolescence alerts prior to finalizing procurement plans. Ensure ECAD models match the physical footprint dimensions for accurate PCB layout integration.

Selection Notes

Select this component when dual-sided mating capability is required for space-constrained designs. The 2.54 mm pitch suits standard DIL connector systems. Verify that the 3A current rating meets circuit requirements. Consider the vertical profile height for clearance constraints in stacked assemblies. Ensure soldering profiles align with SMT reflow specifications for PA6T insulation.

Part Context

This part belongs to the Harwin M20 series, designed for high-reliability interconnects. The M20 line offers various configurations including single and double row options. This specific model provides a 20-position solution with dual-entry functionality. It complements male header counterparts in the same series for complete system connectivity.

Replacement Considerations

M20-7871046: Similar 20-position DIL socket but differs in entry type and plating. M20-7871342: 26-position variant with gold/tin plating. Verify mechanical compatibility and electrical ratings before substitution. Cross-reference pinout and footprint dimensions to ensure direct replacement feasibility without PCB redesign.