The ESQ-120-39-G-D is a high-quality, durable, and versatile rectangular connector manufactured by Samtec Inc. It is part of the ESQ series, known for its 0.050" (1.27 mm) pitch and high density capabilities. This particular model features a double row configuration with 20 positions per row, totaling 40 positions. Its design makes it suitable for a wide range of board-to-board connections where space is a premium.

Applications:

• Board-to-board connections in compact electronic devices.
• High-density interconnections in data centers and networking equipment.
• Medical devices requiring reliable and space-efficient connectors.
• Industrial automation systems where robust connections are essential.
• Telecommunications equipment for signal routing and integrity.

Features:

• 0.050" (1.27 mm) Pitch: Enables high-density connections, saving valuable board space.
• 40 Total Positions: Provides ample signal and power lines for complex interconnections.
• Double Row Configuration: Maximizes connection density while maintaining signal integrity.
• Gold Plating: Ensures excellent conductivity and resistance to corrosion, enhancing signal reliability.
• Surface Mount Termination: Facilitates easy and reliable soldering to the PCB.
• Insulator Material: High-temperature thermoplastic allows for reflow soldering processes.

Benefits:

• Space Saving: The fine pitch allows for more connections in a smaller area, optimizing board layout.
• High Reliability: Gold-plated contacts provide a secure and stable connection, minimizing signal loss and ensuring long-term performance.
• Easy Assembly: Surface mount termination simplifies the soldering process, reducing assembly time and costs.
• Versatile Application: Suitable for a broad range of industries and applications due to its robust design and high-density capabilities.
• Improved Signal Integrity: The design minimizes signal reflections and crosstalk, ensuring high-quality signal transmission.

Additional Details:

The ESQ-120-39-G-D connector features a gold plating on the contacts, ensuring optimal conductivity and corrosion resistance. The insulator material is typically a high-temperature thermoplastic, making it suitable for reflow soldering processes. The connector is designed for surface mount termination, simplifying the assembly process. It is essential to consult the manufacturer's datasheet for detailed specifications, including voltage and current ratings, operating temperature range, and mating recommendations. The “G” in the part number typically indicates gold plating, and “D” suggests a double row configuration. Samtec provides extensive technical documentation and support for their products, ensuring proper integration and optimal performance. This connector is often used with Samtec's mating cable assemblies for a complete interconnect solution. The specific mating connectors will depend on the application's requirements for cable type, length, and termination style.