3-640861-3

Edgeboard Connectors Overview

The 3-640861-3 is a single-edge female card edge connector from the MTA-156 series by TE Connectivity AMP Connectors. It features 3 positions with a 0.156-inch (3.96 mm) pitch. The contacts are made of phosphor bronze with a tin finish, designed for reliable signal transmission. The housing is constructed from polyester and is colored red. It supports a card thickness of 0.062 inches (1.57 mm) and utilizes an IDC termination method. The component operates within a temperature range of -55°C to 105°C and includes a top-mounting opening feature.

Edgeboard Connectors Feature Summary

• Single-edge female configuration for standard card edge applications
• Tin-plated phosphor bronze contacts ensuring durability
• IDC termination method for efficient assembly
• Polyester housing material providing structural stability

Edgeboard Connectors Applications

• Standard card edge interconnections
• Industrial control panel wiring
• Electronic module mounting systems

Edgeboard Connectors Procurement Notes

Verify the specific contact finish and housing material against the latest manufacturer datasheet before integration. Confirm that the IDC termination type aligns with the intended assembly process. Ensure the operating temperature range meets the environmental requirements of the final application. Cross-reference the part number with official TE Connectivity documentation to confirm current availability status.

Edgeboard Connectors Selection Notes

Select this connector when a single-edge female interface is required for 0.062-inch thick cards. The MTA-156 series offers a standardized 0.156-inch pitch suitable for general-purpose board-to-board connections. Consider the tin contact finish for cost-effective solutions where high corrosion resistance is not critical. Verify compatibility with existing PCB layout constraints and mounting hole specifications.

Edgeboard Connectors Part Context

This component belongs to the MTA-156 family of card edge connectors, widely used in industrial and commercial electronics. The series provides various position counts and termination styles to accommodate different design needs. The 3-640861-3 specifically addresses low-pin-count applications requiring robust mechanical retention and electrical continuity through its single-edge design.

Edgeboard Connectors Replacement Considerations

Compatible substitutes include 3-640866-3 and other variants within the MTA-156 series. Verify pin count, pitch, and termination method match before substitution. Check for differences in housing color or flange features if mechanical constraints exist.