Jun Yao Electronics Talks about Circuit Protection under Device Limitations

Li Zejian described the circuit protection products on the current market as “gold is not enough” because different customers have different requirements for protection devices and different historical periods will have different contradictions, and each single product has its limitations. Protection devices (such as GDT and SPG) are typical examples. They have the advantages of large current capacity and small capacitance. They are suitable for primary protection of communication products, but because they are switching devices, they cannot be directly used for active circuits. And because it is a gas-type protection device, it is relatively unsatisfactory in terms of response speed, motion accuracy, and residual pressure. Therefore, the secondary protection is generally limited by a voltage limiting protection device. Pressure-limiting devices (such as TVS Diode and TVS Diode Array) have the advantages of fast response and low residual voltage. However, Si-based TVS Diode devices generally have low surge tolerance, which makes such protection devices not directly applicable. Primary protection; in addition, they have large self-capacitance values ​​and are not suitable for direct use in high-frequency circuits. In other words, in the existing market, there is no single product that can completely solve these problems.

When a single product does not solve the problem, Junyao Electronics provides countermeasures based on actual and experienced FAE, providing targeted solutions, and combining different protection components to complement each other to achieve overall protection. Li Zejian stated that Junyao Electronics Co., Ltd. specializes in R&D and production of overvoltage and overcurrent protection devices. It is one of the most complete suppliers of protection devices and can provide professional circuit protection solutions. It has professional EMC and UL laboratories. The platform can be tested based on IEC61000-4-5, IEC61000-4-2, GR1089, ITU-K.21/20, UL1363, UL1449 3RD, UL498, UL498A and other standards, and has achieved UL's witnessing laboratory. Do preliminary verification tests for customers to provide strong support for shortening the R&D cycle of customer products and reducing the R&D expenses of customers' products.

New Requirements and Challenges for Circuit Protection Devices While providing circuit protection solutions, customers have successively asked more requests from AEM:

Low pulse discharge tube,

No freewheeling discharge tube,

Smaller devices,

Smaller capacitance,

More cost-effective products,

Products that can solve diverse EMC problems;

This puts higher standards on protection device suppliers. Li Zejian said: This requires the device to have a far-sighted vision for the production of business, and considerable self-development capabilities, continue to introduce new, constantly have new products to meet consumer demand, so as to lead the market, the front runners in the business sector, in today and In the future, there is a world of independence.

Junyao Electronic Circuit Protection Product Line Evolution Diagram Li Zejian stated that Junyao Electronics has always attached great importance to R&D, and new products will be available every period of time. For example, GDT can achieve a minimum size of 1,206 at present and can withstand 6KV lightning strike test, while GDT Both SPG and SPG have introduced low-pulse products, customers can choose according to different requirements. For another example, the minimum capacitance of TVS Diode Array can be less than 1pF, which is especially suitable for ESD protection of high-speed data interfaces such as HDMI and USB3.0. TVS Diode has launched the Datong Stream HF series, which can be directly used for the primary protection of the base station power supply, optimizing the traditional protection scheme. From this perspective, Junyao Electronics can basically provide corresponding solutions for different needs.

Junyao Electronics attended the 2012 China (Chengdu) Electronics Show held on August 16th -18th, and held an "Innovative Circuit Protection Solution" at the "Twelfth Symposium on Circuit Protection and Electromagnetic Compatibility" at the same time seminar Program" theme technical presentation. The seminar was held on August 16, 2012. Venue: Hanting Hall, Chengdu Jiaozi International Conference Center. The seminar is currently being webcast.