Types of Automotive PCBs

Flex PCBs – These boards are made of flexible plastic substrates. They are composed of PEEK, polyamide, or transparent polyester films. These boards can be twisted and bent. Find their applications around bends and corners in an automobile.
Rigid PCBs – The rigid boards are made of FR4. These boards aren’t flexible. They are usually found in display monitors and reverse cam screens.
Rigid-Flex PCBs – These are circuit boards are a combination of Rigid and Flexible boards. They are implemented in lighting systems.
HDI PCBs – These boards feature higher wire density per unit area, finer lines and spaces, and high pad connection density.  The HDI boards accommodate more components and play a prominent role in miniaturization. These boards are widely used for infotainment systems.
LED PCBs – The LED boards made of aluminum substrate since they require heat dissipation. They can be found in car indicators, headlights, and brake lights.