Low capacitance, low residual voltage! Wei'an semiconductor discharge tubes are advancing in the field of security

      With the development of image processing technology, the requirements for image clarity, i.e. image pixels, are gradually increasing. At the same time, the localization and iteration of image processing chips are accelerating, and the performance requirements for the front-end protection devices of image processing chips are getting higher and higher, especially the protection devices used in video ports, which pay more attention to their capacitance and clamping voltage (residual voltage).

      In response to this, WAYON, which focuses on the field of protection devices, has launched the WEOS4-80/8ASx series of low-capacitance, low-residual-voltage, high-performance semiconductor discharge tubes, which are currently supplied in large quantities to the security and network communication markets.

Precise conduction and fast response

      WAYON WEOS4-80/8ASx series products are abbreviated as TSS (Thyristor Surge Suppresser), which is a switch-type overvoltage protection device. It can be directly connected across the protected circuit when in use. It has the characteristics of precise conduction, fast response, strong surge absorption ability, high reliability, etc. It is suitable for BNC interface (coaxial interface) surge protection in video surveillance systems DVR (Digital Video Recorder) and NVR (Network Video Recorder) in the security field.

DVR

      TSS working principle:

      Open circuit state: When the TSS circuit is working normally, the device does not operate. At this time, its high resistance ensures that the two lines are completely disconnected.

Normal Circuit Operation

      Short-circuit state: When there is a transient overvoltage in the circuit that exceeds the TSS protection voltage threshold, the TSS device will turn on and short-circuit the transient current to ground, ensuring the safety of the protected equipment.

Operation during a Fault

Low cost, high performance

      Once upon a time, the security monitoring images not only had poor clarity, but also had serious interference and snow noise, which greatly reduced the monitoring image quality. With the development of video monitoring technology and the iterative update of image processing chips, video high definition has become an irreversible trend. However, in order to meet the demand for high definition, the surge resistance of some chips has to be sacrificed.

      Through process adjustment and optimized circuit layout, Wei'an WEOS4-80/8ASx series products only use a single-stage protection solution to effectively protect the subsequent image processing IC chip, greatly reducing the overall cost.

Typical applications of WEOS4-80/8ASx in circuits

      At the same time, the low capacitance design of WEOS4-80/8ASx can meet the pixel requirements of higher image clarity, while the low residual voltage design makes the application range of post-stage image processing IC chips wider. This product is further optimized on the 0080 process platform, and a series of performance-optimized products are obtained by improving the junction depth, concentration and layout distribution of key processes.

V - I Characteristics

Chip structure diagram

TSS action waveform when surge occurs

      Therefore, the performance of the WEOS4-80/8ASx series products is ahead of similar products of most domestic manufacturers. The main packaging forms are conventional SMB/SMA packaging and miniaturized DFN2020-2L (2*2) packaging, which can meet the product application scenarios of small space, low capacitance and low residual pressure.

Package outline drawing

Customized development services

      Wei'an Semiconductor discharge tubes are deeply involved in the fields of network communication and security, and have been mass-produced and shipped to many well-known customers in the fields of network communication and security. In the application solution design stage, the company can develop customized protection device products according to the different application needs of customers, or optimize the application solution with customers.

WEOS4-80/8ASx Main Series Specifications

      In terms of chips, Weian has launched a low residual voltage process platform, a low capacitance process platform and a balanced parameter process platform, and through a series of process optimizations, it has launched products with better residual voltage and capacitance.

      In terms of packaging, Wei'an has launched a series of miniaturized packaging products, dual-channel integrated products, and miniaturized DFN packaging products, which have been supplied to the market in large quantities and have been widely praised by customers.

      WAYON always adheres to the core values ​​of "customer-oriented, technology-based, and hard-working spirit", is committed to leading the market through technological innovation, and strives to become a leading brand of global circuit protection components and power semiconductors.