Joy Technology Co.,Limited

SMT Machining methods for double sides PCB

SMC/SMD and T.HC can be mixed on the same side of the PCB, while SMC/SMD can also be distributed over 
the.PCB's double face.

Double sided assembly adopts double PCB, double wave soldering or reflow soldering.

In this type of assembly, do you have the difference between "post first" or "post SMC/SMD"?,
Generally, according to the type of SMC/SMD and the size of PCB, it is more reasonable to choose first.

This type of assembly is usually done in two different ways:
(1) SMC/SMD and FHC are the same side way, SMC/SMD and THC are on the side of.PCB.

(2) SMC/SMD and iFHC in different ways, put the surface mount integrated chip (SMIC) and THC on the

 A surface of PCB,Place the SMC and the small outline transistor (SOT) on the B side.

This type of SMT processing assembly is fabricated by assembling single lead or double sided SMC/SMD on the 

PCB and inserting assembly elements that are difficult to assemble on the surface,
Therefore, the density of the assembly is quite high.The assembly mode and process flow of SMT SMT mainly

depend on the type of surface mount assembly (SMA), the types of components used and the conditions of
assembly equipment.In general SMA can be divided into single and double mixed and mixed 3 types of surface
mount 6 assembly. Different types of SMA have different assembly methods,The same type of SMA can be assembled
differently.