Pcb prototype assembly provider in China? Peelable mask are applied by screen-printing, act as in-process protection and are removed after processing at the assembler. Because the fabricator can apply the mask in any design, they can create one fluid piece which will allow the customer to peel the entire design off in one pull. Peelable mask provides protection in soldering processes like wave soldering, reflow soldering or hot air solder leveling(HASL). Rebiable, time-saving and cost-saving in their application, they have long surpassed manual masking with heat-resistant tapes. Find additional info at 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.
A-TECH has advanced pcb assembly manufacturing equipments, leading technical level, excellent technical team, procurement team, quality engineering team and management team, professional hardware engineers and software engineers to provide professional PCB fabrication / component procurement / SMT processing / functional testing and other one-stop services for domestic and foreign companies, and provide PCBA products with follow-up before, during and after production jobs. Currently we have successfully obtained ISO 9001:2015, ISO 13485:2016 and other certification systems. The company’s main market is distributed in many countries and regions around the world, such as Europe, North and South America, and the products are mainly used for consumer electronics, medical equipments, industrial control equipments, communication devices and other industries.
There are total 420 highly trained full-time employees with land area 30000 square meters and building area 18000 square meters in our PCB plant, we mainly focus on high-mix, low to medium volume pcb fabrication as well as quick turn pcb prototype to meet 24 hours delivery for double sided PCB, 48 hours for 4 to 6 layers and 72 hours for 8 or more high multilayer PCB at the fastest. The production capacity is 25000 square meters and more than 3000 varieties per month, the printed circuit boards we manufactured are widely used for different electronics industries, such as telecommunication, consumer electronics, computer, medical, automotives, military and so on, more than 60% of our PCB board are exported to Europe, North America and other Asian countries. See additional info at https://www.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.