Pcb provider with atechpcb.com
Pcb prototype assembly supplier 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. Discover even more information on pcb prototype assembly.
As a primary testing technique in PCB assembly, AOI applies to fast and accurate inspection of errors or defects occurring in PCB assembly process, so that high quality of PCB assemblies can be ensured with no defect after their leaving assembly line. AOI is contributive to efficiency improvement because it is placed on SMT assembly line, just after reflow. As soon as some problems are inspected and reported by AOI equipment, engineers can instantly change corresponding parameters in the previous stages of the assembly line, so that remaining products will be correctly assembled. AOI can cover primarily come in soldering and components categories. In terms of soldering, AOI detect the defects ranged from open circuits, solder bridges, solder shorts, insufficient solder to excess solder. Component defects include lifted lead, missing components, misaligned or misplaced components.
Metal Core PCB means the core (base) material for PCB is the metal, not the normal FR4/CEM1-3, etc. and currently the most common metal used for MCPCB manufacturer are Aluminum, Copper and steel alloy. Aluminum has good heat transferring and dissipation ability, but yet relatively cheaper; copper has even better performance but relatively more expensive, and steel can be divided into normal steel and stainless steel. It more rigid than both aluminum and copper, but thermal conductivity is lower than them too. People will choose their own base/core material according to their different application.
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.
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. Find extra information at https://www.atechpcb.com/.
