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PCB Fabrication

PCB Fabrication
Since 2006, Hangzhou singo tech co.,ltd. has been distinguishing itself as a leader in pcb assembly, box building and electronic contract manufacturing experience brought us a range of abilities to manage throughout process of electronics PCB manufacturer, PCB assembly (PCBA), technical analysis, prototype, batch production and logistics. Unique sense of offering outstanding services is our label in winning international marketplace.
We can perform the repair and planned test for your PCB assembly (PCBA), such as BGA rework, test frame burning program and test frame etc. Your various batch production could be processed by our dedicated engineers.
A bare board PCB (printed circuit boards) and the bare board testing play critical roles in PCB creation. Bare board, is the PCB before the electric components or through holes are placed on it. A bare board printed circuit boards are comprising of:
*Metal Coating
*Conductive Pathways
Our capabilities include designing bare boards to your bespoke needs to that they can support the components that you require.
In addition, our bare board (PCB) also help you in panelization as well as placing your Printed circuit board to larger boards.
Maximum Board LayersUp to 12 layers
Bare Board TypesSingle Sided PCB, Double Sided PCB, Multilayer PCB, Rigid PCB, Flex PCB, Rigid-Flex PCB
Board thickness (multilayer board)Maximum:0.13" (any layers); Minimum: 0.025" (4 layer)
Board thickness (1- or 2-layer board)0.02", 0.031”, 0.039”, 0.047”, 0.062”, 0.078”, 0.094”, 0.118", 0.125"
Tolerance of board thickness+/- 10%
Base materialsFR-4, FR-406 (Tg 150 deg C), FR-408 (Tg 170 deg C), G10, CEM3, Rogers, Alumina Ceramic
Copper weight and minimum trace width/space required0.5 oz (min. trace width/space 4 mil), 1 oz (min. trace width/space 5 mil),
2 oz (min. trace width/space 7 mil), 4 oz (min. trace width/space 12 mil),
6 oz (min. trace width/space 20 mil), 8 oz (min. trace width/space 40 mil)
Minimum conductor width and space0.003" (0.075 mm) for conductors including trace and annular ring
Minimum finished hole size0.006" (0.15mm).
Silkscreen/Legend colorswhite, yellow, black, pink, red
Solder Mask (LPI)Colors: Green, Black, Red, Blue, Purple, Yellow, Silver, Gold
Maximum hole aspect ratio10:01
Surface platingTin/Lead HASL, immersion gold (soft gold), electrolytic gold (hard gold), immersion tin, immersion silver, OSP
Blind/buried viasYes
Bare Board TestingIsolation Testing: This means verifying that the required resistance between two separate electrical connections is met.
Continuity Testing: Which involves verifying there are no open points within the circuit.
Multilayer PCB
The demand for multilayer PCBs is on the rise; not without reason. Being small and light in weight, they find extensive application in a range of industries. Some of the major benefits of multilayer PCBs include:
*Small Size and light weight: 
A big advantage that comes with multilayer PCBs is that they are inherently small and light in weight and therefore lend themselves to portability. With miniaturization on the rise as far as a whole lot of appliances go, this is a big plus in favor of multi-layered PCBs.
 In terms of quality and deliverables, they tend to be far superior and reliable compared to single or double-layered PCBs. That they are also more durable is an added perk!
*High on flexibility: 
Where flexible construction techniques are used; what results is flexible multilayer PCBs. This works very well in applications where bending and flexing is a desired trait.
 With multilayer PCBs being high-density and incorporating several layers, they lend themselves to high capacity and speed.
*Single connection point:
 Multilayer PCBs work as one cohesive unit and therefore need a single connection point. This is a big advantage even when it comes to the design of the electronic product especially where miniaturization is key.
As an experienced LED PCB Manufacturer at Singo, we bring complex designs to life. Our extensive capabilities in LED printed circuit boards include:
*Rigid, flexible as well as rigid flexible boards for LED.
*Metal Core LED circuit boards
*Embedded LED PCB
*SMD LED circuit boards
*A wide range of finishes - SMOBC/HASL, electrolytic gold, electroless gold, electroless silver, immersion gold, immersion tin, and OSP
*Option of base plate - Copper or Aluminum
*Choice of PCB Core - FR-4, Epoxies and aluminum laminated with copper
*Dielectric thickness: .003"
*ROHS compliant/Lead free assemblies
*Automated Optical PCB Inspection, Electrical testing and sample inspections
A metal core PCB also referred to as a thermal PCB and MCPCB, differs from the traditional FR4 printed circuit boards in that incorporates a metal material as its base. With a thermally conductive dielectric layer, the prepeg dielectric ensures that heat is transferred to the base plate. The base plate, usually made of aluminium or copper, in turn, offers mechanical integrity while transferring the heat to the mounting surface or to the air. With the heat diverted away from the printed critical board components, thermal management is ensured.
What the PCB metal core ensures, therefore, is:
*Proper thermal management
*Improved product reliability
*Improved mechanical durability
Our capabilities in metal Core PCB span the following:
*Aluminium, Copper as base material
*Single Layer, Chip-on-board, Double Sided, Double Layered and Multilayer Metal Core PCB