Pcb provider in China
Top rated pcb manufacturer 2022? As a professional PCB manufacturer and with more than 15 years’ rich experience in PCB manufacturing, A-TECH is capable of manufacturing various PCB types, include: single-sided PCB, double-sided PCB, multilayer PCB up to 30 layers, Aluminum PCB, flexible PCB, Rigid-flex PCB, HDI PCB, Microwave RF PCB etc. We’re skilled in different special pcb technology, include: thick copper PCB, Hybrid PCB, PCB edge plating, Via In Pad(Resin Plugged), Countersink & Countersunk, Half plated hole, press fit hole, control depth routing, impedance control. We can also meet different demands of PCB surface finish, include: HASL, HAL(Lead free), Immersion gold/Tin/silver, hard gold plated, gold fingers, OSP, Peelable mask, carbon ink etc. We have HASL, HAL(Lead free), Immersion gold and OSP surface finish in house to meet majority PCB demands with ripid delivery. Read more information at pcb manufacturer.
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.
The PCB assembly process is a combination of the SMT(Surface Mounting Technology) process and the DIP(Dual In-line Package) process. According to the requirements of different production technologies, it can be divided into a single-sided SMT placement process, a single-sided DIP insertion process, a single-sided mixed process, single-sided placement and insertion Mixed process, double-sided SMT mounting process and double-sided mixed process, etc. The PCBA process involves board cutting, printing, patching, reflow soldering, plug-in, wave soldering, testing and quality inspection.
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 extra 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.
