M20-7894042

Overview

The Harwin M20-7894042 is a 40-position socket assembly from the M20 series, designed for surface mount technology. It features a single row with a 2.54 mm (0.1 inch) pitch and utilizes gold-plated phosphor bronze contacts housed in black polyamide insulation rated UL94 V-0. The connector supports a current rating of 3A per contact and operates within a temperature range of -40°C to +105°C. This component is specifically engineered for board-to-board or cable applications, offering a low-profile solution for high-density interconnect requirements in electronic assemblies.

Feature Summary

• Surface mount socket assembly with 40 positions
• Gold-plated phosphor bronze contacts for reliable conductivity
• Black polyamide insulation with UL94 V-0 flammability rating
• Single row configuration with 2.54 mm pitch

Applications

• Board-to-board interconnections
• Cable-to-board connections
• High-density electronic assemblies
• General purpose industrial electronics

Procurement Notes

Verify end-of-life status and availability through authorized distributors. Confirm RoHS compliance details and check for alternative sourcing options due to potential discontinuation. Ensure compatibility with mating headers and validate soldering profiles for surface mount processes before integration into production lines.

Selection Notes

Select this component for applications requiring a single-row, surface-mount socket with 40 positions. Consider the 2.54 mm pitch and 3A current rating when designing circuit layouts. Verify that the operating temperature range of -40°C to +105°C meets environmental requirements. Ensure mechanical clearance allows for the specified stack height and surface mount footprint.

Part Context

Part of the Harwin M20 series, known for robust rectangular connectors. The M20 line offers various configurations including headers, sockets, and wire housings. This specific model represents a high-pin-count socket option within the series, suitable for applications needing reliable signal and power transmission in compact spaces.

Replacement Considerations

M20-7894042 is a discontinued part. Potential substitutes include other 40-position SMT sockets from the M20 series or compatible connectors from other manufacturers with identical 2.54 mm pitch and pin count. Verify mechanical dimensions and electrical ratings before substitution.