Compared with Zener diodes, what are the application advantages of ESD (TVS) protection chips?

The P/N junction area of ESD (TVS) devices is larger than that of Zener diodes, resulting in ESD (TVS) devices not only having stronger high-voltage tolerance, but also greatly reducing the voltage cut-off rate

. ESD (TVS) devices have a better effect on the safety protection of low operating voltage circuits of handheld devices.


Comparison of TVS and ceramic capacitors: surface mount ceramic capacitors can also be used for ESD protection, which is cheap and simple; but the high voltage withstand capacity of ceramic capacitors is weak, 5kV high voltage can make 10% of ceramic capacitors invalid; 10kV high voltage can make 60% Ceramic capacitors fail.


According to the IEC61000-4-2 standard, for the use of general handheld devices, each connector must withstand a contact impulse voltage greater than 8kV. Since ESD (TVS) can withstand a voltage of 15kV, ESD (TVS) is more suitable for handheld devices, effectively ensuring the pass rate and reliability of the final product.

Comparison of TVS and MLV: Multilayer metal oxide structure devices (MLV) can also effectively suppress instantaneous high-voltage shocks, but they have nonlinear voltage-current characteristics, and the cut-off voltage can reach 2 to 3 times the initial cut-off voltage. This makes it suitable for the protection of lines and devices that are less sensitive to voltage, such as power supply circuits.

ESD (TVS) protection chip has better voltage cut-off factor and lower capacitance, especially suitable for high-frequency and high-speed signal connectors of handheld devices.


The micro-surface packaging of ESD (TVS) chips is not only suitable for automatic assembly process, but also can integrate other functions (such as EMI and RFI filter protection), etc., which can greatly reduce device cost, optimize hardware system design, and improve PCB board-level anti-interference performance and reliability.



The above content is from: https://jy-semicon.com/



评论

发表评论

此博客中的热门博文

RS485 Connector ESD/EOS Solution

图片
  RS485   Connector ESD/EOS   Solution   Content: 1. Introduction to RS485 Interface 2.Features of RS485 3. JY electronics ' ESD/EOS Protection Solution for RS485 Interface   RS-485 interface is an interface standard.It is a new balanced transmission standard approved by the Electronic Industries Association (EIA) in 1983,  RS-485 interface is only an electrical standard that describes the physical layer of the interface, such as protocols, timing, serial or parallel data, and links are all defined by the designer or by a higher-level protocol.             RS-485 defines the electrical characteristics of drivers and receivers using a balanced multipoint transmission line. The RS-485 standard was generated to compensate for the short distance and low rate of RS-232 communication. 2. What are the characteristics   of RS485 interface 2.1 Low interface voltage level , not easy to damage the chip RS485 electrical characteristic...
阅读全文

PS/2 Connector EDS/EOS Solution

图片
Contents 1. Introduction to PS/2 connector 2. PS/2 connector characteristics 3. Jingyang electronics' ESD/EOS protection solution for PS/2 interface 1. Introduction to PS/2 connector The PS/2 connector is an connector on a PC-compatible computer system that can be used to connect a keyboard and mouse. PS/2 is named after the personal computer launched by IBM in 1987: Personal System/2 (PS/2 series). This is a special connector for mouse and keyboard. It is a 6-pin circular connector but the mouse Only 4 pins are used to transmit data and power supply, and the remaining 2 pins are empty. It should be noted that when connecting to the PS/2 connector. When using the connector, pay attention to distinguish the mouse and keyboard connectors. The corresponding colors are as follows: Generally, for a motherboard that complies with the PC99 specification, the mouse connector is green and the keyboard connector is purple. In addition, it can also be judged from the relative position of the ...
阅读全文

TVS-Transient Voltage Suppressor Diode(1)

图片
Transient Voltage Suppressor Diode is an efficient protective device in the form of a diode. This device is frequently used in the primary protection section of circuits to address overvoltage situations. It is important to distinguish between TVS and clamping diodes, as they are not the same. ·  Clamping Diodes Standard diodes and Zener diodes can also be used for overvoltage/transient protection. However, they are not as robust as transient voltage suppressor diodes because standard diodes and Zener diodes are specifically designed for rectification and voltage regulation. ·  Transient Events in Circuits   ·  TVS Diode Symbol Unidirectional TVS ·  Bidirectional TVS         ·  Futures of TVS Diode Bidirectional diodes have identical characteristic curves in both the positive and negative directions, making their connection to the circuit irrelevant. In comparison to the negative direction, the unidirectional diode has a higher...
阅读全文