Superfast Recovery Rectifier is the most popular use for diodes. Fast rectifiers convert alternating current (AC) to direct current (DC). They only allow one-way flow of electrons. Rectifiers have many uses and are often found serving as components of high-voltage direct current power transmission systems and DC power supplies. Fast rectifier diodes feature very low reverse recovery time, very low switching losses and low noise turn-off switching. Super Fast Rectifiers,Fast Recovery Rectifiers,Super Fast Recovery Rectifier,Ultra Fast Rectifier Diodes Changzhou Changyuan Electronic Co., Ltd. , https://www.changyuanelectronic.com
"The PCB board we participated in this time is mainly used for downlights and indoor energy-saving lamps. It is divided into four types: general guide aluminum substrate, middle guide aluminum substrate, high-conductivity aluminum substrate, and FR4 light strip. Within 2.0, w/(m·k), high conductivity can be achieved around 3.0 w/(m·k), but the market demand for high-conductivity products is relatively small.†Zhao Wei, head of the engineering engineering process of Heding, told reporters.
In addition, the precision of this product is very high, based on the needs of lighting focus, Heding circuit began to carry out in-depth research and development in the process. "At present, the distance error of the three-point and one-line center of the PCB board produced by us is no more than 0.15mm, and the error of the pad and the three-hole center point is less than 3mil, which is a market leading position in technology." Zhao Wei said.
At present, the 2014 (5th) High-tech Golden Globe Award - the annual LED good product selection has entered the WeChat voting stage: August 8 - September 30.
If you have already paid attention to the official WeChat LED, please click on the menu bar "Golden Ball Award - I want to vote" under the official WeChat of Gaogong LED Network to vote.
If you have not paid attention to the high-tech LED WeChat, please pay attention to the official WeChat (micro-signal: weixin-gg-led) of Gaogong LED network, and then click on the menu bar "Golden Ball Award - I want to vote" under the official WeChat LED official website. . 
[Text|High-tech LED reporter Long Zonghui] With the fierce competition in the LED lighting terminal market, various accessory companies expressed pressure on Shanda, because more buyers put the price in the first place. Such a market environment has created some companies to reduce product quality requirements in order to guarantee orders and corresponding profits, as well as the PCB market. Many of the previous nominal thermal conductivity tests have been far apart, and the industry has its own standards and standard industry specifications.