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Home Industry News How Automotive PCBs Differ from Ordinary PCBs?

How Automotive PCBs Differ from Ordinary PCBs?

  • July 21, 2023

How Automotive PCBs Differ from Ordinary PCBs?

The automotive industry is constantly evolving, with new technologies and innovations being introduced every year. One area that has seen significant advancements is automotive electronics. From infotainment systems to advanced driver assistance systems (ADAS), modern cars are becoming more reliant on electronics. However, these systems are only as good as the printed circuit boards (PCBs) that power them. In this article, we will explore the importance of quality and reliability in automotive PCBs.

Material Selection: FR-4 HTG and Polyimide

One of the key differences between automotive PCBs and ordinary PCBs is the materials used. While ordinary PCBs typically use FR-4 fiberglass material, automotive PCBs require higher-level materials such as FR-4 HTG or polyimide materials that have better high-temperature tolerance. This is because automotive PCBs need to have better stability and reliability in high-temperature environments.

FR-4 fiberglass material

Process Requirements: Strict Soldering and Protection Treatment

Automotive PCBs also require stricter soldering and protection treatment to ensure circuit stability and reliability. The more severe working environment and vibration impact that automotive PCBs need to withstand means their process requirements are higher. This includes more rigorous testing and quality control measures.

Environmental Adaptability: High-Temperature Resistance and Anti-Vibration Capabilities

Automotive PCBs need to adapt to more complex automotive working environments, such as high temperature, low temperature, humidity, and vibration. Therefore, automotive PCBs need to have better high-temperature resistance, humidity resistance, and anti-vibration capabilities. This ensures that the PCBs can function properly in a variety of conditions, which is crucial for the reliability of automotive electronics.

Reliability: Anti-Aging, Anti-Corrosion, and Anti-Interference

Because automotive PCBs play a more important role in automotive electronic systems, their reliability requirements are higher. Automotive PCBs need to withstand long-term work and severe working environments, and therefore require better anti-aging, anti-corrosion, and anti-interference capabilities. Additionally, automotive PCBs need to undergo strict reliability testing to ensure their stability and reliability under various extreme conditions.

Advancements in Automotive PCB Materials

As automotive electronics continue to advance, so do the materials used in automotive PCBs. Manufacturers are now using new materials such as ceramic and metal core PCBs to meet the higher demands of the industry. These materials offer increased thermal conductivity and better heat dissipation, which is crucial for the reliability of automotive electronics.

Meeting the Demands of the Automotive Industry

At BICHENG, we understand the importance of quality and reliability in automotive PCBs. Our newly shipped PCBs use Rogers RO4350B material, which offers better high-temperature tolerance and is lead-free. The double-sided Rogers RO4350B PCB has a base copper of 17um and RO4350B dielectric of 20mil, with a finished board thickness of 0.58 mm. The PCB has 27 components, 30 total pads, and 61 vias, and has undergone 100% electrical testing to ensure its quality and reliability.

double-sided Rogers RO4350B PCB

As a leading PCB supplier, we are committed to meeting the demands of the automotive industry. Our strict quality control measures and use of high-quality materials ensure that our PCBs meet the highest standards of reliability and stability. We also understand the importance of meeting delivery deadlines and providing excellent customer service. If you have any technical questions about our products or services, please contact Jane at

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