28-Pin PCB Header for Automotive Applications A 28-pin PCB header is a critical interconnect component widely used in automotive electronics to establish secure and reliable electrical connections between printed circuit boards (PCBs) and external devices or wiring harnesses. Designed to meet the stringent requirements of the automotive industry, this header ensures robust performance in harsh environments characterized by temperature fluctuations, vibrations, moisture, and electromagnetic interference (EMI). Key Features and Specifications 1. High Durability: Constructed from high-temperature-resistant thermoplastics and metal alloys, the header withstands operating temperatures ranging from -40°C to +125°C, making it suitable for under-the-hood and cabin applications. 2. Secure Mating: The header features a locking mechanism or friction-fit design to prevent accidental disconnections caused by vibrations, ensuring stable signal and power transmission. 3. Current and Voltage Ratings: Typically supports currents up to 5A per pin and voltages up to 250V, accommodating power distribution and signal transmission needs in automotive systems like ECUs, infotainment, and ADAS modules. 4. Pitch and Configuration: Available in common pitch sizes (e.g., 2.54mm, 3.96mm) with straight or right-angle orientations, enabling flexible PCB layout designs. 5. EMI/RFI Shielding: Some variants include shielded housings or grounding pins to minimize electromagnetic interference, crucial for sensitive automotive electronics. Applications - Engine Control Units (ECUs): Connects sensors and actuators to control modules. - Infotainment Systems: Links display units, audio systems, and telematics. - Lighting Systems: Powers LED modules and adaptive lighting controls. - ADAS & Safety Systems: Interfaces with radar, cameras, and collision avoidance systems. Compliance & Reliability Compliant with automotive standards such as USCAR, ISO 16750, and RoHS, the header undergoes rigorous testing for mechanical shock, thermal cycling, and salt spray resistance. Its gold-plated contacts enhance conductivity and corrosion resistance, ensuring long-term reliability. Conclusion The 28-pin PCB header is a versatile, high-performance solution for automotive electronics, offering durability, precision, and compliance with industry standards. Its design addresses the challenges of modern vehicles, supporting advancements in electrification, connectivity, and autonomous driving.