1. Overview

Spring loaded rectangular connectors are a specialized type of electrical interconnect system featuring spring-actuated contact elements. Their design enables reliable electrical connections in applications requiring high mating cycles, vibration resistance, and precise alignment compensation. These connectors play a critical role in modern electronics by enabling robust power and signal transmission in challenging environments such as automotive testing, industrial automation, and medical equipment.

2. Main Types and Functional Classification

3. Structure and Components

Typical construction includes:

• Contact Elements: Phosphor bronze or beryllium copper with gold plating
• Insulation Housing: High-temperature thermoplastics (LCP, PPS)
• Actuation Mechanism: Precision compression springs (0.5-5N force range)
• Shielding: Optional EMI/RFI protection layers
• Retention System: Mechanical latches or magnetic assist

4. Key Technical Specifications

5. Application Fields

Primary industries:

• Telecommunications: 5G base stations, optical transceivers
• Industrial Automation: Robotic arms, conveyor systems
• Military/Aviation: Radar systems, flight control panels
• Medical: Patient monitoring systems, MRI equipment
• Automotive: EV battery test fixtures, autonomous driving sensors

6. Leading Manufacturers and Products

7. Selection Guidelines

Key considerations:

1. Determine current/voltage requirements with safety margins
2. Evaluate environmental conditions (temperature, humidity, shock)
3. Match contact pitch with PCB layout constraints
4. Consider termination type (solder, crimp, press-fit)
5. Verify compliance with standards (IPC, MIL-STD)
6. Calculate total cost of ownership including maintenance

8. Industry Trends

Emerging developments:

• Miniaturization: 0.4mm pitch connectors for wearable devices
• High-speed capabilities: 56Gbps differential pairs
• Smart integration: Embedded sensors for condition monitoring
• Eco-friendly materials: Halogen-free polymers and lead-free plating
• Automated mating: Robotics-compatible alignment systems