The auto sector is experiencing one of the greatest technological changes in its history. Electrification, intelligent driving, vehicle connectivity, and strict safety rules are fast transforming the way vehicles are designed and produced. Ever since the car PCB and automotive printed circuit board became a key component of ADAS and battery management systems, as well as infotainment and body electronics, their place has never been so central, or so challenging.
This ultimate guide will be based on more than 10 years of practical experience in the PCB business, through which you will clearly understand what PCBs in cars are, current and emerging design standards in automotive PCBs, prominent standards and certifications worldwide, material and process trends, and we will also introduce you to a reliable, high-quality automotive PCB manufacturer.
Automobile PCB is a printed circuit board manufactured and designed to work under the harsh environment and conditions of the car. The cars that contain these PCBs include numerous parts of the vehicle, and some include the engine control units (ECUs) through to navigation systems and electric drives in electric cars. Due to the importance of the automotive printed circuit boards, the boards are constructed using materials and designs that make them highly thermally stable, strong in mechanical strength, in addition to their long life and reliability.
The high variations of the automotive and consumer PCBs can be attributed to the severe requirements of the automotive applications. The automotive PCBs should be reliable to withstand drastic changes in temperature, continuous vibrations, and extended life cycles, which are not normally experienced by consumer electronics.
Automotive PCBs are designed for application in different car systems, which meet some performance and safety standards.
Modern automobiles are equipped with Electronic Control Units (ECUs) that control these engines, such as the fuel injection, ignition timing, emissions, and transmission. These ECUs combine highly complex multi-layer PCBs that are developed to operate in high temperature and vibration conditions to guarantee accuracy in sensor processing and real-time authority loops.
In electric and hybrid cars, automotive PCBs are fundamental parts of Battery Management Systems (BMS), inverter control, on-board chargers (OBC), and DC-DC converters. They can work with high currents, allowing for the accurate checking of cells, control thermal and electrical safety in high-voltage settings, vital to the reliability and longevity of EV powertrains.
ADAS systems such as radar, LiDAR, ultrasonic sensors, and camera modules require high-density and high-frequency automotive PCBs to facilitate the processing of analog/digital signals, data fusion, and real-time decision making. Such PCBs should have signal integrity and be able to withstand large temperature variations and electromagnetic noise.
The Anti-Lock Braking Systems (ABS), Electronic Stability Control (ESC), and airbag deployment units are critical safety systems that u
