Excellent pcb prototype assembly manufacturer in China? We are engaged in the production, processing and sales of PCB manufacturing. A-TECH focuses on providing a variety of PCB manufacturing for customers, offering blind vias pcb, via in pad pcb, countersink pcb, edge plating pcb, thick copper pcb and impedance control pcb. A-TECH has the ability to meet different needs. PCB manufacturing is available in multiple types and specifications. The quality is reliable and the price is reasonable. Since the establishment, A-TECH has always been adhering to the service concept to serve every customer wholeheartedly. We receive acclaim from customers by providing thoughtful and caring services. Read more information on pcb manufacturer China.
The main difference between a FR4 board and MCPCB is the thermal conductivity dielectric material in the MCPCB. This acts as a thermal bridge between the IC components and metal backing plate. Heat is conducted from the package through the metal core to an additional heat sink. On the FR4 board the heat remains stagnant if not transferred by a topical heatsink. According to lab testing a MCPCB with a 1W LED remained near an ambient of 25C, while the same 1W LED on a FR4 board reached 12C over ambient. LED PCB always be produced with Aluminum core, but sometimes steel core PCB also be used.
Our automated X-Ray inspection systems are able to monitor a variety of aspects of a printed circuit board in assembly production. The inspection is done after the soldering process to monitor defects in soldering quality. Our equipment is able to “see” solder joints that are under packages such as BGA, CSP and FLIP chips where the solder joints are hidden. This allows us to verify that the assembly is done correctly. The defects and other information detected by the inspection system can be quickly analyzed and the process altered to reduce the defects and improve the quality of the final products. In this way not only are actual faults detectd, but the process can be altered to reduce the fault levels on the boards coming through. Use of this equipment allows us to ensure that the highest standards are maintained in our assembly.
A-TECH CIRCUITS was founded in 2003, which was a UL(E357001), ISO9001:2015, ISO14001:2015, IATF16949:2016 and RoHS certificated (printed circuit boards) PCB manufacturer and PCB assembly manufacturer with 15 years’ experience, the headquarter and sales office was located in ShenZhen city of China, the manufacturing facilities was located in HuiZhou city where is about 150KM from ShenZhen city. See even more information on atechpcb.com.
Tg means Glass Transition Temperature. As flammability of printed circuit board (PCB) is V-0 (UL 94-V0), so if the temperature exceeds designated Tg value, the board will changed from glassy state to rubbery state and then the function of PCB will be affected. If working temperature of your product is higher than normal (130-140C), then have to use High Tg PCB material which is > 170C. and popular PCB high value are 170C, 175C, and 180C. Normally the FR4 circuit board Tg value should be at least 10-20C higher than working temperature of product. If you 130TG board, working temperature will be lower than 110C; if use 170 high TG board, then maximum working temperature should be lower than 150C.