X-PCB is one of the leading manufactures of prototypes and small volume PCB in China, specializing in PCB manufacturing,especially rigid-flex pcb and multilayer FPC.
The mentioned board is a 3 layer pcb. Its board thickness is 1.6mm. The flex area thickness is 0.12mm. Yellow cover film and white silkscreen are used on this board. For the dense PADs, black solder mask is specified. The surface finishing is immersion AU.
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Polyimide And FR4
Product Feature And Application
Through many years of development, X-PCB has been regarded as a creditable manufacturer by international customers in China. The company specializes in the production of all kinds of PCB (Double- sided Board, Multi-layers Board, HDI, FPC).
The hot air leveling is also called hot air solder leveling. It is the technology that coat the PCB surface with molten tin-lead solder and heat the compressed air to blow leveling, to form a coating layer that prevents the copper from being oxidated, but also provides good solderability. When in HAL, solder and copper form copper-tin intermetallic at the junction. The thickness of solder that protect the copper surface is about 7 ~ 11μm. When in HAL, PCB need to be immersed in molten solder.
This board’s copper thickness is 1oz. PI material is needed at the gold finger and FR4 stiffener is needed at the dense PADs. It also has 100ohm differential impedance.
● We have our own factory and can efficiently meet your request and cost savings for you.
● We use Class A raw materials, the pursuit of high-quality board. We have 42 engineers online 24 hours a day to provide you with a high level of service.
● Our complaint rate is less than 0.5%, you can pay the money after checking our boards, there should be no risk for you.