Capacity selection calculation of super capacitor

The selection and calculation of the capacity of the super capacitor need to understand the various parameters of the load circuit, because our goal is to select a suitable capacity to support the load under the conditions of the use of the load parameters, and reach our expected time...

Clock memory circuit super capacitor backup battery application design selection

The selection of the super capacitor directly determines the product design cost and maximizes the use efficiency of the super capacitor; the matching of circuit parameters can also ensure that the capacitor works in the best state, and will not cause abnormal losses to the long service life.

In the face of increasingly strict environmental protection policies, the old PCB factory announced the closure

On August 20, Kingboard’s subsidiary Marsh Circuit Board (Shenzhen) Co., Ltd. issued a "Notice to Employees": Affected by environmental protection policies and the urban development and renewal of Shenzhen’s Pingshan District, Marsh Circuit Board is scheduled to be released on September 30, 2018. The operation was ended a few days ago and the whole plant was disbanded. Such a long-established and not-small-scale circuit board company was disbanded, and it was embarrassing. It is reported that Daxin Circuit Board (Shenzhen) Co., Ltd. was founded in 1993. It is one of the largest copper-clad panel manufacturers in the world and a subsidiary of the Kingboard Chemical Group. Kehui, Jiangmen Rongxin, etc.

5G and automotive electronics make efforts to expand the third-generation semiconductor material market

Toward Industry Research Institute pointed out that compared with the current mainstream silicon wafers (Si), the third-generation semiconductor materials SiC and GaN not only have the characteristics of high voltage resistance, but also have the advantages of high temperature resistance and high frequency operation. Not only can the chip area be greatly reduced, but also the design of the peripheral circuit can be simplified, so as to reduce the volume of the module, the peripheral components of the system and the cooling system. In addition to the design of lightweight vehicles, the low on-resistance and low switching loss of the third-generation semiconductors can also greatly reduce the energy conversion loss during vehicle operation. Both are quite helpful to the improvement of the endurance of electric vehicles. Therefore, Si

The tax refund is good for the integrated circuit industry, and Yangtze River Storage receives a tax refund of 186 million yuan

Recently, Yangtze River Storage Technology Co., Ltd. received a tax refund of 186 million yuan. 　　 It is reported that Yangtze River Storage is one of the three largest memory fabs in my country. It is jointly invested and constructed by Ziguang Group, the National Integrated Circuit Industry Investment Fund, Hubei Integrated Circuit Industry Investment Fund, and Hubei Science and Technology Investment Group, and is responsible for the national memory base project. 　　 YMTC successfully developed China's first 32-layer 3D NAND flash memory chip in 2017. According to Diao Shijing, co-president of Ziguang Group, YMTC’s 32-layer 3DNAND flash memory chips will be mass-produced in the fourth quarter of this year, and its 64-layer 3DNAND flash memory chips will be mass-produced in the fourth quarter of this year.

STMicroelectronics MCU out of stock in the first half of the year did not improve

At the beginning of this year, NXP, the leader in automotive electronic chips, launched the global microcontroller chip increase this year, and announced that it will increase the price of multiple product lines across the board since the previous quarter. Among them, the MCU will increase by 6%. The market expects May be out of stock for a whole year. 　　 Since last year (2017), many MCU manufacturers around the world have extended their product shipment lead times from four months to six months, and it is even rarer for Japanese MCU manufacturers to extend as long as nine months. According to Taiwan media reports, in the second half of last year, STMicroelectronics reported a significant increase in demand for automotive electronics and serious product shortages. Other IDM factories such as Texas Instruments, Renesas, and NXP also experienced the same situation.

Import tariffs on August 23, connectors bear the brunt

According to the frontier announcement of the "Announcement of the Member of the Customs Tariff Commission of the State Council on Imposing Additional Tariffs on Imports of US$50 Billion Originating in the United States," the second list of tariffed goods from the United States and Canada will be adjusted. Starting from 01, additional tariffs will be imposed. 　　 This also means that related imported products originating in the United States will be subject to a 25% tariff. This is also the first product in electronic components that has been affected by tariff increases. Previously, the original import tax rate for connectors was 0%. 　　 It is understood that the brands of related connectors are related to 3M, MOLEX, TE, TYCO, AMPHENO

MediaTek's first public 5G test prototype equipped with M70 baseband

Recently, at the "IC60 Special Exhibition for the 60th Anniversary of Integrated Circuits" held in Taiwan, MediaTek publicly released its own 5G test prototype last time, equipped with MediaTek M70 baseband, which is based on TSMC’s 7nm process. There is a good improvement in heat control. 　　 It is reported that MediaTek has invested in 5G research and development for 5 years, and is committed to turning complex 5G technology into fingertip-sized chips. The 5G prototype is exhibited in this exhibition, which is a phased achievement based on previous generation chips. 　　MediaTek’s 5G prototype is not a single device, but a multi-device combination product system, because of 5G technology

20 million batteries/IC, 300,000 tons of scrap metal, more than 30 cemeteries, and the tide of scrapping shared bicycles is coming

In the heyday of the shared bicycle industry, there were more than 70 brands across the country. With the accelerated integration of the industry, more than 60 brands have been withdrawn from the market, forming a three-pronged situation dominated by Mobike/Harrow/ofo. According to data from the China Bicycle Association, in 2016, a total of 2 million shared bicycles were released in 30 cities across the country; according to the "China Shared Bicycle Industry Development Report (2018)" jointly released by the China Academy of Information and Communications Technology and the Mobike Policy Research Institute, In 2017, 23 million new cars were launched in 200 cities across the country. According to the above data, at least 25 million vehicles will be shared within two years