Pcb factory manufacturer with bstpcb.com? Flex printed circuit boards (PCBs) are flexible sheets of insulating material, typically polyimide, with copper traces etched into them. The finished panel can be bent or flexed without damage. Flex PCBs are for applications where space is limited, and flexibility is required, such as in mobile phones and wearable electronics. There are many different types of printed circuit boards (PCBs), each with advantages and disadvantages. The type of PCB that is best suited for a particular application depends on the requirements of the application. Discover even more info at metal backed pcb.
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.
Since beginning, as a printed circuit board (PCB) vendor in Asia, Best Technology is dedicating to be your best partner of advance, high-precision printed circuit boards, such as heavy copper boards, ultra thin PCB, mixed layers, high TG, HDI, high frequency (Rogers, Taconic), impedance controlled board, Metal Core PCB (MCPCB) such as Aluminum PCB, Copper PCB, and Ceramic PCB (conductor Copper, AgPd, Au, etc) and so on.
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.
The design, as well as the manufacture of flexible PCBs, is a very nimble job. Seemingly minor errors such as two metal traces not being insulated on a high-voltage board, for example, can result in an arc leading to the destruction of the circuit. Errors in manufacturing can come by way of wrong selection of materials, improper design, and other such factors that can result in the capability of the flexible PCB to bend and take the required shape. If the PCB tends to fall from a height or any other external forces such as frequent plugging and unplugging of the PCB, it can cause damage to your PCB. Unreliable and faulty components can damage the board in many ways. One of them is the fact that they are unable to protect the PCB from overheating.
According to different manufacturing method, current there’re three basic types for ceramic board: A) Thick Film Ceramic Board Thick Film Ceramic PCB: Using this technology, the thickness of conductor layer exceeds 10 micron, more thick than spurting technology. The conductor is silver or gold palladium, and was printed on ceramic substrate. More for Thick Film Ceramic PCB. B) DCB Ceramic Board DCB (Direct Copper Bonded) technology denotes a special process in which the copper foil and the core (Al2O3 or ALN), on one or both sides, are directly bonded under appropriate high temperature and pressure. Read more information at https://www.bstpcb.com/.
Double sided flex circuits consists with double sided copper conductors and can be connected from both sides. It allows more complicated circuit designs, more components assembled. The major material used are copper foil, polyimide and coverlay. Adhesiveless stack up is popular for better dimensional stability, high temperature, thinner thickness. Dual access flexible circuit board refer to the flex circuit which can be accessed from both top and bottom side but only has only layer of conductor trace. Copper thickness 1OZ and coverlay 1mil, it similar with 1 layer FPC and opposite side FFC. There’re coverlay openings on both sides of flex circuit so that there’re solderable PAD on both top and bottom sides, that is similar with double sided FPC, but dual access flex circuit board has different stack up because of only one copper trace, so no plating process is need to make plated through hole (PTH) to connect between top and bottom side, and trace layout is much more simple. Capability: We are continued to improve our MCPCB, FR4 PCB & FPC & Ceramic PCB manufacturing level to get satisfactory result from customers and ourselves.
The layer on top of the copper foil is called the soldermask layer. This layer gives the PCB its green (or, at PCB & MCPCB, red) color. It is overlaid onto the copper layer to insulate the copper traces from accidental contact with other metal, solder, or conductive bits. This layer helps the user to solder to the correct places and prevent solder jumpers. In the example below, the green solder mask is applied to the majority of the PCB, covering up the small traces but leaving the silver rings and SMD pads exposed so they can be soldered to. Soldermask is most commonly green in color but nearly any color is possible. We use red for almost all the PCB & MCPCB boards, white for the IOIO board, and purple for the Best Technology boards.