2023-03-18
Static electricity in life is a very familiar natural phenomenon. Since static electricity will cause interference, ESD electrostatic discharge has become a hazard to electronic products and equipment, resulting in functional disorders and even component damage of electronic products and equipment. The scale of modern semiconductor devices is getting larger and lower, and the operating voltage is getting lower and lower, which leads to the sensitivity of semiconductor devices to external electromagnetic harassment is also greatly improved. More and more attention has been paid to the interference caused by ESD circuits and the damage caused by components, CMOS circuits and interface circuits.
Electrostatic protection devices, also known as transient voltage suppression diode arrays (TVS Array), are single or multiple ESD protection devices designed by multiple TVS grains or diodes with different layouts to have specific functions. ESD electrostatic protection diode response speed (less than 0.5ns), low capacitance, low on-voltage, high integration, small size, easy to install, can simultaneously achieve multiple data line protection, is the industry's most ideal high frequency data protection device.
ESD electrostatic protection components have the characteristics of low capacitance, fast response time and high flexibility, it and ESD electrostatic diode is actually the same kind of protection device, but our name is not the same, the product is the same thing.
Today, Li Yang focuses on one of the most commonly used electrostatic protection devices - ESD electrostatic protection components.
First, ESD electrostatic protection components concept
ESD electrostatic protection components are divided into ESD one-way electrostatic protection devices and ESD two-way electrostatic protection devices:
One-way ESD devices can only pass the positive breakdown voltage (VBR) signal, if the negative will cause ESD device breakdown, and two-way ESD devices can pass the positive and negative breakdown voltage (VBR) signal;
Two.ESDWhat is the role of electrostatic protection components?
In fact, the role of the circuit protection device ESD is a bit like people sometimes buy insurance, the car to buy car insurance is the same reason, the circuit also needs protection. In normal circumstances can not see its role, once the circuit surge, pulse, static electricity, the role played at this time is no small matter, he can protect the entire circuit system from surge, pulse, static damage to reduce the loss. Although ESD static electricity may cause the product to work abnormally, crash, and even damage and cause other safety problems. However, we can rest assured that before the product is generally listed, domestic or foreign testing departments require ESD static electricity and other surge impact testing to ensure that everything is qualified to be listed, which please rest assured.
Many functions of electrostatic protection components have been applied to military or civilian products, such as electrostatic dust removal, electrostatic spraying, electrostatic separation, electrostatic copying, etc., which involve various electrostatic protection devices. With the development of science and technology, power and electronic products are increasingly diversified and complicated, circuit protection is getting more and more attention, and more and more circuit protection components are applied, so the selection of ESD electrostatic protection components can be combined with the three aspects of ESD rapid response time, low clamp voltage, and high current surge bearing capacity. You can also consult Liyang professional and technical personnel to provide you with detailed solutions.
