80% printed circuit board is use PCB stencils assembly

80% printed circuit board is use PCB stencils assembly.
This is very high degree to PCB industry.

But Jim want to ask the stencil PCB have many types.
How to judge the PCB stencil is necessary?
Or why would I need a PCB Stencil?

First is the PCB assembly technology develop.
If you have read our HTD circuits shared articles before.
You must learn many PCB making technology.
PCB surface mount is this situation.
Stencils replace hand soldering of surface mount devices, and the inconsistencies created by hand soldering.

Second is the speed of PCB mount.
They allow for direct placement of solder paste to the surface to be soldered.
This mean the speed use PCB stencil can faster before.

From a purely statitical standpoint,80% PCB mount is use PCB stencil.
That also the reason why so many PCB supplies also produce PCB stencils.

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