In today's rapidly advancing technological world, even the smallest electronic components play a crucial role in driving the innovation of smart devices. Among these, the transient voltage suppression (TVS) diode, as a key element in protecting circuits from voltage transients, is making a significant impact in the automotive electronics sector with its unique capabilities. Tesla, a pioneer in electric vehicles and autonomous driving technology, has recently partnered with semiconductor giant TSMC to produce its latest Full Self-Driving (FSD) chip using 3nm-4nm process technology, further advancing the development of autonomous driving. Behind this innovation, the silent protection provided by electronic components like the SMBJ28A transient voltage suppression diode is especially critical.

Slkor Transient Protection Diode SMBJ28A product photo

The SMBJ28A transient voltage suppression diode is a protective component designed for high-voltage environments. With a reverse working voltage (Vrwm) of 28V, it maintains a stable cutoff state under normal operating conditions, preventing current flow and ensuring low power consumption and efficient operation. When the device experiences sudden voltage spikes or surges, the SMBJ28A responds swiftly, with a breakdown voltage range between 31.1V and 35.8V. This effectively limits overvoltage to a safe range, preventing damage or malfunction caused by excessive voltage.

Slkor Transient Protection Diode SMBJ28A specification

Notably, the reverse leakage current (Ir) of the SMBJ28A is as low as 5μA, ensuring high stability in the reverse cutoff state, reducing energy waste, and enhancing the overall reliability of the device. Additionally, its maximum clamping voltage is 45.4V, meaning that during an overvoltage event, the SMBJ28A can clamp the voltage to this safe level, providing a solid protective barrier for the downstream circuitry.

Parameters of Slkor Transient Protection Diode SMBJ28A

Tesla's collaboration with TSMC undoubtedly injects new energy into the development of autonomous driving technology. The FSD chip produced using 3nm-4nm technology offers higher integration, lower power consumption, and greater computational power, providing Tesla's autonomous driving system with more accurate and real-time data processing capabilities. However, as chip performance improves, the stability requirements for the operating environment become more stringent. In the complex automotive electronic systems, voltage transients and surges are inevitable, and the presence of protective components like the SMBJ28A transient voltage suppression diode ensures that the FSD chip can operate stably in harsh electromagnetic environments.

Tesla’s choice of TSMC as the manufacturer for its FSD chips reflects not only the advanced manufacturing processes but also the company’s extensive experience and high-quality assurance in semiconductor production. Meanwhile, Samsung’s continued production of older versions of autonomous driving chips highlights the coexistence of collaboration and competition between different manufacturers in the automotive electronics sector, jointly driving technological progress and development.

In summary, the SMBJ28A transient voltage suppression diode plays a crucial role in safeguarding the innovation of Tesla’s FSD chips with its unique capabilities. As autonomous driving technology matures, we look forward to more high-quality electronic components like the SMBJ28A emerging to provide solid support for the development of smart vehicles. We also anticipate deeper collaborations between companies like Tesla and TSMC, which will continue to drive future innovations in autonomous driving technology.

About Slkor：

Slkor has research and development offices in Busan, South Korea, Beijing, China, and Suzhou, China. Most of the wafer manufacturing and packaging and testing are carried out within China. The company employs and collaborates with individuals and organizations worldwide, with a laboratory for product performance and reliability testing and a central warehouse located at its headquarters in Shenzhen. Slkor has filed for over a hundred invention patents, offers more than 2,000 product models, and serves over ten thousand customers globally. Its products are exported to countries and regions including Europe, the Americas, Southeast Asia, and the Middle East, making it one of the rapidly growing semiconductor companies in recent years. With well-established management systems and streamlined workflows, Slkor has rapidly enhanced the brand awareness and reputation of its "SLKOR" brand through its outstanding quality and standardized services. Its product range includes three major series: diodes, transistors, and power devices, with recent introductions of new products such as Hall elements and analog devices, expanding its presence in sensors, Risc-v microcontrollers, and other product categories.