Mohammed Dogar
Mohammed Dogar
Vice President MCU Business Development
Published: May 17, 2023

The importance of quality and reliability in the context of semiconductor devices and embedded designs cannot be overstated. These components are the backbone of modern electronic systems, powering everything from consumer electronics to industrial machinery and critical infrastructure.

For businesses operating in these markets, the quality and reliability of their products are key success drivers. A product that fails or malfunctions due to quality issues can result in significant financial losses, damage to brand reputation, and even safety hazards. Products known for their high quality and reliability, on the other hand, can command a premium price, increase customer loyalty, and drive business growth.

Quality in the context of semiconductor devices can be defined as the level of acceptable behavior and variability as it relates to the functional specifications of a given device. In other words, it is the probability that a component will consistently perform a specific function under specific conditions for a specific period of time. The failure rate is measured in Defects per Million (DPM) or Parts per Million (PPM).

Renesas Electronics is an established semiconductor market leader with proven quality in demanding applications, including in the industrial and automotive segments. We implement processes to ensure quality is built in from the ground up, which helps us to deliver trusted embedded design innovations to shape a limitless future. The Renesas name has been synonymous with quality for decades with close to zero PPM, thanks to our established quality assurance systems.

Our commitment to quality and reliability is evident in our quality policy and quality assurance system. By complying with all applicable legal and regulatory requirements, enhancing product safety and trust, continuously improving the quality of products and services, and striving to improve the quality management system, Renesas ensures that our products meet the highest standards of quality and reliability.

‘Tried & True’ – Renesas MCUs Made for You


Quality control and reliability verification in design

Quality control and reliability verification in design are critical to ensuring the overall quality of a product. It is at the design stage that the foundation for product quality is established and then built upon and refined throughout the manufacturing process. In the design stage, there are several key areas that must be considered to ensure quality and reliability. One of the most important is to ensure that the design meets all relevant regulatory requirements. This includes ensuring that the product is safe and complies with relevant safety standards. Another important consideration is ensuring that the design is robust and reliable. This involves designing the product to withstand the stresses and strains of its intended use. This includes identifying any potential weaknesses and addressing them before the product is released for manufacturing.

To ensure quality control and reliability verification in design, Renesas has implemented several measures. Key among them is the use of a quality management system (QMS) that encompasses all aspects of the design process, from concept to production. The QMS is designed to ensure that all products meet the required standards for quality and reliability and that any issues that arise during the design process are addressed promptly. It includes measures such as product testing, failure analysis, and corrective actions to ensure that any issues are resolved quickly and effectively. We also employ a range of other measures to ensure quality and reliability in the design stage, including the use of advanced simulation tools to model product performance and identify potential design issues, along with rigorous testing and validation of all components and subsystems. By implementing these measures, Renesas is able to ensure all products are designed to the highest standards of quality and reliability, enhancing not only customer satisfaction but also contributing to the overall safety and well-being of society.

Quality control in production

Quality control in production is a critical aspect of ensuring that high-quality products are produced consistently. It involves a range of activities aimed at monitoring and managing the production process to ensure required quality standards are met.

The first step here is the establishment of quality standards. These standards should be well-defined and communicated to all personnel involved in the production process. The standards should cover all aspects of production, including materials, equipment, personnel, and the production process itself. Once these standards are in place, it is important to monitor the process to ensure standards continue to be met. This involves regular inspections of both production equipment and the products being produced. Any issues or defects should be identified and corrected immediately to prevent further issues down the line.

Quality control in production also involves regular product testing to ensure they meet the required quality standards. This may involve destructive or non-destructive testing, depending on the nature of the product. Destructive testing involves testing the product to the point of failure, while non-destructive testing involves testing the product without damaging it. One important aspect is the use of statistical process control (SPC) techniques. SPC involves the use of statistical tools to monitor the production process and identify any issues that could arise, which allows for quick corrective action to be taken, reducing the risk of defects and improving overall product quality.

Another important aspect of quality control in production is the use of quality assurance systems which help ensure the production process is consistent and meets the required quality standards. These may include documentation, training programs, and regular audits to ensure that the production process is following the established quality standards.

Quality control in production is a critical aspect of ensuring that high-quality products are produced consistently. It involves establishing quality standards, monitoring the production process, testing products, using statistical process control techniques, and implementing quality assurance systems. By focusing on quality control in production, companies can improve their products, increase customer satisfaction, and improve their overall business performance.

Quality assurance of product

Quality assurance of a product is a process that ensures the product meets the desired quality standards and specifications. It is a proactive approach to prevent defects, mistakes, and errors in the product and ensure customer satisfaction.

At Renesas, quality assurance is an essential part of our quality policy. We aim to provide highly reliable, high-quality products and services to our customers, and quality assurance plays a crucial role in achieving this goal. Our quality assurance process involves several steps, including product quality monitoring and customer support. We monitor product quality throughout the manufacturing process to ensure that the products meet the desired specifications and standards. We also conduct extensive testing and verification to identify and address any potential issues or defects in the product.

In addition, we provide comprehensive customer support to ensure that our customers receive the highest quality products and services. Our customer support team is available to answer any questions or concerns our customers may have and to provide technical support when needed. To ensure the effectiveness of our quality assurance process, we continually review and improve our quality management system. We strive to identify areas for improvement and implement corrective actions to prevent similar issues from occurring in the future.

Quality assurance is a critical component of our commitment to providing high-quality products and services to our customers. We believe that by prioritizing quality, we can build trust with our customers and contribute to the success of their businesses.

Renesas Electronics quality assurance for semiconductor devices

A global leader in semiconductor solutions, Renesas places a strong emphasis on quality assurance for all our products, including critical microcontrollers (MCUs) used in embedded systems. The company understands that the reliability and performance of these devices are critical to the success of embedded designs and our customers’ overall business growth.

Renesas Quality Assurance


Addressing four key aspects ensures the quality and reliability of our products:

  1. Reliability: Renesas employs various reliability testing methods to ensure that its semiconductor devices meet the required standards for durability and functionality. These tests include temperature cycling, high-temperature operating life (HTOL) testing, and electrostatic discharge (ESD) testing. In addition, the company conducts extensive accelerated life testing (ALT) to predict a device's longevity and performance under extreme conditions.
  2. Failure Mechanisms: Despite rigorous testing, semiconductor devices may still experience failures due to various factors such as environmental stress, manufacturing defects, or design flaws. Renesas has a thorough understanding of failure mechanisms and conducts detailed failure analysis to identify the root cause of any issue. This helps the company to implement corrective actions to prevent similar issues from occurring in the future.
  3. Failure Analysis: Renesas uses advanced analytical techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray analysis to conduct failure analysis. A dedicated team of experts specializes in analyzing the physical and electrical properties of a device to identify the cause of failure. This analysis is critical to ensuring that the issue is properly addressed and resolved.
  4. Basic Recommendations for Handling and Using Semiconductor Devices: Renesas also provides basic recommendations for handling and using its semiconductor devices. These recommendations include precautions for electrostatic discharge, handling and storage instructions, and guidance for soldering and rework. Proper handling and use of the device can help minimize the risk of failures and extend the device's life.

In conclusion, quality assurance is of utmost importance for semiconductor devices such as MCUs used in embedded systems. Renesas Electronics is proud to be consistently recognized in the market as a high-quality supplier, ensuring the development of the most advanced and reliable products across a wide range of applications. We place a strong emphasis on reliability, understanding failure mechanisms, performing failure analysis, and providing basic recommendations for handling and using semiconductor devices. By ensuring the quality and reliability of our products, we help our customers to increase the value of their embedded designs, enhance their competitiveness, and drive business growth.

Visit the Renesas Quality & Reliability page to learn more and find Reliability Reports, Certifications, Manufacturing Bulletins and additional documentation.

Reference our Semiconductor Reliability Handbook for additional details.

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General Reliability Literature PDF 14.70 MB 日本語
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