Factory Direct: Telecom Cellphone Main Board Assembly Production

This is a PCB assembly project for cellphone main baord. Consumer electronics, from audio products to wearables, gaming or even virtual reality, are all getting more and more connected. The digital world we live in requires a high level of connectivity and advanced electronics and capabilities, even for the simplest of the products, empowering users worldwide.As an automotive electronics company and automotive PCBA manufacturer, we, at ANKE, deliver high quality services in engineering, design and prototyping.

Layers	10 layers
Board thickness	0.8MM
Material	Shengyi S1000-2 FR-4(TG≥170℃)
Copper thickness	1oz(35um)
Surface Finish	ENIG Au Thickness 0.8um; Ni Thickness 3um
Min Hole(mm)	0.13mm
Min Line Width(mm)	0.15mm
Min Line Space(mm)	0.15mm
Solder Mask	Green
Legend Color	White
Board size	110*87mm
PCB assembly	Mixed surface mount assembly on both sides
ROHS complied	Lead FREE assembly process
Minimum components size	0201
Total components	677 per board
IC packge	BGA,QFN
Main IC	Texas Instruments, Toshiba,On Semiconductor, Farichild,NXP,ST,Linear
Test	AOI, X-ray, Functional Test
Application	Telecom/Consumer Electronics

SMT Assembly Process 1. Place (curing) Its role is to melt the patch glue so that the surface mount components and the PCB board are firmly bonded together. The equipment used is a curing oven, located behind the placement machine in the SMT line. 2. Re-soldering Its role is to melt the solder paste, so that the surface mount components and the PCB board are firmly bonded together. The equipment used was a reflow oven, located behind the pads. Mounter on SMT production line. 3. SMT assembly cleaning What it does is remove solder residues such as ux The assembled PCB is harmful to human body. The equipment used is a washing machine, the location may be Not fixed, it may be online or offline. 4. SMT assembly inspection Its function is to check welding quality and assembly quality The assembled PCB board. The equipment used includes magnifying glass, microscope, in-circuit tester (ICT), needle tester, automatic optical inspection (AOI), X-RAY inspection system, functional tester, etc. 5. SMT assembly rework Its role is to rework the failed PCB board Fault. The tools used are soldering iron, rework station, etc. anywhere on the production line. As you know, there are some small issues during production, so hand rework assembly is the best way. 6. SMT assembly packaging PCBMay provides assembly, custom packaging, labeling, cleanroom production, sterilization management and other solutions to provide a complete custom solution for your company's needs. By using automation to assemble, package and validate our products, we can provide our customers with a more reliable and efficient production process. Electronic manufacturing service provider for Automotive, we cover numerous applications: > Automotive camera product > Temperature & humidity sensors > Headlight > Smart lighting > Power modules > Door controllers & door handles > Body control modules > Energy management

Third, the prices are different due to complexity and density. PCB will be different cost even if materials and process are the same, but with different complexity and density. For example, if there are 1000 holes on both circuit boards, the hole diameter of one board is larger than 0.6mm and the hole diameter of the other board is less than 0.6mm, which will form different drilling costs. If two circuit boards are same in other requests, but the line width is different also results in different cost, such as one board width is larger than 0.2mm, while the other one with is less than 0.2mm. Because boards width less than 0.2mm have higher defective rate, which means the production cost is higher than normal.

Fourth, the prices are different because of various customer requirements. The customer requirements will directly affect the non-defective rate in production. Such as one board accords to IPC-A-600E class1 requires 98% pass rate, while accords to class3 requires only have a 90% pass rate, causing different costs for the factory and finally lead to changes in product prices.