Introduction to ESD devices

Locked-type element, fast reaction speed;


Packaging forms are various: FBP2C, SOD523, SOD323, SOT23, sot23-6, SOT553, SOT563, SO8, dfn-10l, etc. Encapsulation comes in many forms. Is introduced: BESD protection device for high speed data transmitting end (I/O) of protection device, designed in the circuit can avoid sensitive circuits affected by static electricity, low capacitance, small size, high integration, fast response characteristics, than the traditional PESD (polymers) have lower voltage clamping the voltage and the turning point, which can better protect sensitive components.

Application scope: USB, HDMI, antenna, MOBILE, RS232, GPS, LCD, SWITCH, ADSL, SIM, SD, ie1394, DVI, HDMI, MP4, etc.


Problems with ESD


The damage and damage caused by ESD (electrostatic discharge) to electronic products can be divided into two types: sudden damage and potential damage. The so-called sudden injury refers to the device is seriously damaged, functional loss. This kind of damage can usually be found in the quality inspection in the production process, so the cost of rework maintenance is mainly brought to the factory. Potential damage refers to that parts of the device are damaged, the function has not been lost, and can not be found in the detection of production process, but it will make the product unstable, good and bad in use, thus posing greater harm to product quality. Of the two types of damage, the potential failure accounted for 90%, and the sudden failure accounted for only 10%. That is to say, 90% of the electrostatic damage can't be detected until it is in the hands of the user. Most of the problems related to static damage, such as frequent cell phone crashes, automatic shut-down, poor voice quality, loud noise, good time difference and wrong keys. Because of this, electrostatic discharge is regarded as the biggest potential killer of electronic product quality, and electrostatic protection has become an important part of electronic product quality control. The differences in the stability of domestic and foreign brands of mobile phones basically reflect their differences in the electrostatic protection and anti-static design of products