Makers offer an array of products and one-stop solutions for key terminal devices.
Mainland China PCB assembly companies adopt single-, double-sided, multilayer, flexible, rigid-flex, HDI and IC substrate PCBs. More than 70 percent of the line is based on the first three, with the third accounting for the bulk, while a growing number use HDI boards. The last subcategory is forecast to reach nearly 20 percent of output by 2018, driven by the smartphone and tablet PC markets.
Local makers accept low-volume, high-mix orders and provide one-stop solutions for value addition.
Global Circuit (Shenzhen) Co. Ltd offers production, component sourcing, assembly, testing, packing and logistics, and Fullwill Technology Co. Ltd PCB design, layout and assembly, and contract manufacturing and testing.
The key materials used include PCBs, electronic components, soldering wire, paste and adhesives. Most are obtained locally. The first input can be sourced from foreign providers from Taiwan and Japan on request.
Suppliers such as Shenzhen Baoli Electronics Co. Ltd make PCBs in-house. The company turns out double-sided, up to 22-layer and aluminum-base units. Global Circuit produces multilayer and flexible boards respectively with a maximum 22 and six tiers, HDI and aluminum variants.
ICs come from major players such as Atmel, TI, Fairchild, Toshiba and STMicroelectronics.
Despite the rising cost of labor, prices are expected to stay at current levels due to intense rivalry.
Here is a selection of PCB assemblies:
PCB assembly for car devices
Shenzhen Baoli Electronics Co. Ltd's model D600S PCB assembly for automotive GPS, speeding reminder devices and compasses has an FR-4 board and measures 55x63mm.
The unit integrates about 75 BGA chips, which are placed using SMT or through-hole method. It undergoes function testing at the board, subassembly and system levels, and automated optical inspection.
The company requires a minimum order quantity of 500 units. Delivery is within 20 days.
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PCB assembly has up to 0201 components
Cirket Electronics Co.'s model CKTSMT000108 PCB assembly adopts a 6-layer board with an FR-4 base, immersiongold surface finish and 1oz copper thickness.
The 126x162x1.6mm unit incorporates components as small as 0201, and supports as tight as 0.4mm QFP and 0.3mm IC pitches. In terms of BGA, the maximum size is 74x74mm, with the minimum ball diameter and pitch of 0.4mm and 1mm.
SMT and DIP are the placement techniques used.
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PCB assembly meets RoHS
Fullwill Technology Co. Ltd offers the Prototype Service PCB Assembly with 0201 Chip model based on SMT. The unit has a 50x50mm minimum board size and 0.3mm pitch. It accommodates up to 0201 components in BGA, CSP or LLP.
The model complies with RoHS. The minimum order quantity is 100 units. Delivery is within 15 days.
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PCB assembly with FR-4 base
Global Circuit (Shenzhen) Co. Ltd's model GC-A-012 PCB assembly for TVs adopts a 4-layer board with an FR-4 base. It can have up to 0201 components, which are placed via SMT.
The product supports 0.5mm-pitch BGA packages and 0.2mm ZIF connector soldering. It meets RoHS.
The company accepts a minimum order of 100 units, and has a 7-day delivery lead time.
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PCB assembly for power supply systems
Mecca Electronics (China-HK) Co. Ltd's model PCBA Assembly for Power Supply PCB assembly is produced using surface-mount equipment. The maker accepts OEM orders.
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