Structure of PCB

Printed circuit boards (PCBs) are the basic building block of many modern electronic devices. It’s the foundation of printed circuit boards, whether it’s the simple single-layer boards used in your garage door opener, the six-layer board in your smartwatch, or the 60-layer, ultra-high-density, high-speed circuit boards used in supercomputers and servers. It is the circuit on which all other electronic components are mounted. Semiconductors, connectors, resistors, diodes, capacitors, and radio devices are assembled and “talk” to each other via the PCB.

Flexible PCB

Flexible circuit boards can be designed to withstand extreme temperatures – between -200° C and 400° C – which explains why they are so desirable for borehole measurements in the oil and gas industry.

Number of Layers1-8 layer
Build Time3-5days
Polyimide base materialPolyimide Flex
FPC Thickness0.08-0.4mm

Min Track/Spacing

Min Hole Size(diameter)


Coverlay(Flex Part)Yellow Coverlay,White Coverlay,Black Coverlay
Silkscreen ColorWhite,Black
Surface FinishImmersion gold,OSP,Immersion silver,Immersioni Tin
Finished Copper0.5-2oz

Aluminum PCB

Among all Metal core PCBs, Aluminum PCB is the most common type. The base material consists of an aluminum core and standard FR4. It features a thermal clad layer that dissipates heat in a highly efficient manner while cooling components and increasing the overall performance of the products. Currently, Aluminum Backed PCB is regarded as the solution to high power and tight tolerance applications.

MaterialAluminum core (Domestic 1060), Copper core, FR4 covering
Thermal conductivity


Min. Track/Spacing4mil
Min. Hole Size0.8mm
Base MaterialAluminum, FR4, Flex, Flex-rigid, HDI, Rogers, etc.
Board Thickness0.4-3.2mm
Surface Finishing

Immersion gold, OSP, Hard Gold,Immersion SIlver,Enepig

Finsih Cooper1-4oz

Metal Core PCB

Clients order aluminum pcbs more often, because the price of aluminum pcb is much more economic, they are used for LED lighting, audio frequency apparatus and communication electronic equipment.

Aluminum thickness 0.8-2.0mm
Thermal conductivity1.5W/(m·K) and 2.0W/(m·K).
Peeling strength9lb/in
Solder resistanceSF: 288℃, >180 sec.

Breakdown voltage

Dielectric loss angle


FlammabilityUL 94V-0
Build time3-5 Day
Silk ScreenWhite,Black,Blue
Finished Copper0.5-2oz