1. Introduction  

With the rapid advancement of technology, automobiles are making significant strides toward intelligence and connectivity. Modern in-car systems integrate numerous electronic devices such as entertainment systems, navigation systems, and autonomous driving sensors, all of which demand high voltage stability. However, during vehicle operation, various transient overvoltage threats may occur, such as those caused by engine ignition, lightning induction, and power switching. These overvoltage pulses can severely damage onboard electronics, causing system failures and negatively affecting driving safety and the overall driving experience. The transient voltage suppression diode (TVS) is an efficient overvoltage protection device that quickly responds to transient overvoltage events, clamping the voltage to a safe level and protecting automotive electronics from damage. The SLESD5311N-2TR, as a high-performance TVS diode, has broad application prospects in the smart automotive field.

Slkor Transient Protection Diode SLESD5311N-2TR product photo

2. SLESD5311N-2TR Product Overview  

The SLESD5311N-2TR is a transient voltage suppression diode manufactured by a renowned semiconductor company. It features advanced packaging technology, offering advantages such as compact size, light weight, and easy installation, making it highly suitable for the high-density assembly needs of automotive electronics. Key parameters of the diode are as follows:  

- Reverse working voltage (Vrwm): 5V, meaning the diode is in a cutoff state with minimal current consumption when the normal operating voltage is below 5V;  

- Breakdown voltage (min): 6V, breakdown voltage (max): 9V, where the diode rapidly conducts when the voltage exceeds this range;  

- Reverse leakage current (Ir): 0.1uA, indicating extremely low leakage current in the cutoff state, with negligible impact on the circuit;  

- Maximum clamping voltage: 10V, which effectively limits transient overvoltage to within 10V, ensuring protection for subsequent electronic devices.

Slkor Transient Protection Diode SLESD5311N-2TR specification

Parameters of Slkor Transient Protection Diode SLESD5311N-2TR

3. Applications of SLESD5311N-2TR in Smart Automotive Systems  

- (a) Protection of In-Car Entertainment Systems  

In-car entertainment systems are an essential part of modern vehicles, providing rich entertainment options for both drivers and passengers. However, the electronic components inside these systems are highly sensitive to voltage fluctuations. During vehicle operation, events like engine ignition or power switching can generate transient overvoltage, potentially disrupting the entertainment system's functionality or damaging internal chips and circuits. The SLESD5311N-2TR can be installed at the power input and signal lines of the entertainment system, quickly conducting when transient overvoltage occurs and clamping the voltage to a safe level, thereby protecting the system’s electronics from damage.

- (b) Protection of Navigation Systems  

Navigation systems, an integral component of smart automotive systems, provide drivers with accurate location data. The GPS modules, processors, and other electronic components within navigation systems require stable voltage supply. Factors like lightning induction and power fluctuations can cause transient overvoltage, affecting the system’s accuracy and stability. The SLESD5311N-2TR can be used in the power protection circuit of navigation systems, effectively suppressing transient overvoltage and ensuring the system operates smoothly.

- (c) Protection of Autonomous Driving Sensors  

With the development of autonomous driving technology, more vehicles are equipped with sensors like cameras and radar. These sensors have strict voltage stability requirements, as transient overvoltage could damage the sensors, compromising the performance and safety of the autonomous driving system. The SLESD5311N-2TR can be installed in the power circuits and signal interfaces of autonomous driving sensors, providing reliable overvoltage protection to ensure the stable operation of the system.

4. Advantages of SLESD5311N-2TR  

- (a) Fast Response  

The SLESD5311N-2TR boasts a rapid response speed, quickly conducting as soon as transient overvoltage occurs and clamping the voltage to a safe level, effectively protecting automotive electronics from damage.  

- (b) Low Leakage Current  

With a reverse leakage current of just 0.1uA, the diode consumes negligible energy in its cutoff state, minimizing any impact on the vehicle’s battery life.  

- (c) High Reliability  

Constructed with high-quality materials and advanced manufacturing processes, the diode is highly reliable and stable, capable of functioning reliably in the harsh operating conditions of automobiles.

5. Conclusion  

The transient voltage suppression diode SLESD5311N-2TR, with its excellent performance and broad applicability, holds significant value in the smart automotive sector. It effectively protects automotive electronics from transient overvoltage damage, enhancing the reliability and safety of smart vehicle systems and providing drivers and passengers with a more comfortable and secure driving experience. As smart vehicle technology continues to evolve, the demand for voltage protection in automotive electronics will only increase, and the SLESD5311N-2TR will play an even more critical role in the field. With ongoing technological advancements and innovations, it is expected that the performance of the SLESD5311N-2TR will continue to improve, providing even more reliable protection for smart automotive systems in the future.

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.