Detail technical of two layer flexible circuit board
The flexible PCB name used by factories you should know
Two layer flexible circuit board, or named double sided flexible circuit board.
Some flexible PCB factory worker just uses two layer flexible circuit board.
So if you want place a flexible PCB order from them, use same name with FPC worker can help more easy.
Then two layer flexible circuit boards use more widely than one layer FPC.
The construction of two layer flexible circuit board
If you have read our Metal Core PCB articles, you will understand this part more easy.
Differ with MCPCB construction, two layer flexible circuit board have five layer in total.
Top and bottom layer were insulating layer to protect circuit layers.
And both side of the circuit layer also laminated insulating layer.
This means one between the conductive layer and two out side layers on the top and bottom.
Emma recommond you compare one and two layer flexible circuit stackup, you will remember those stackup.
There were so many flex PCB factories in China, even some of them have produced their own standard thickness.
We want to more PCB purchase know the common sense of two layer flexible circuit board’s thickness.
So here we discuss the thickness of two layer flexible circuit board where the average of most flexible PCB factories.
Usually the thinnest thickness of two layer flexible circuit boards can reach 6 mils.
And the most thick can reach 10 mils.
If you can special requirement, some high end flexible PCB factories can meet your require.
Compare with one layer flexible circuit board, two layer flexible circuit board have more use areas.
Due to it’s high electronic performance and flexible bending ability, most of RF devices are use two layer flexible circuit board.
Those RF devices like high end audio and GPS equipments.
First advantage is high density than one layer flexible circuit board.
You know high density mean can carrying higher current, and have higher electronic performance.
Then is small space of two layer flexible circuit board.
Due to the signals are run on two circuit layers, two layer flexible circuit board can design more small space.
In some smart high end audio or GPS device, small space is the biggest advantage.
This point is the biggest difference with one layer flexible circuit board.
We have mentioned that two layer flexible circuit board have high density than one layer FPC.
This means it may have high electronic performance and good electronic parameters.
Our 4MCPCB flex PCB designer told Emma the current carrying capabilities of the signal trance range from a few million-amps to several amps.
Due to differing flexible PCB factory have difference electronic parameter, we cannot give exact data.
Top three articles of flexible PCB