Soldering Circuit Boards Pcb
The advantages of PCB assembly are as follows:
1. Small size of electronic products
The volume of welded components is only about 1/10 of that of traditional cartridge components. Generally, after SMT SMT processing, the volume of electronic products can be reduced by 40%~60%.
2. Low efficiency and cost
PCB is easy to realize automation, improve production efficiency, save material, energy, equipment, manpower, time, reduce cost by 30%~50%.
3. Light weight
The weight of the SMT component is only 10% of that of the conventional cartridge, and the SMT can reduce the weight by 60%~80%.
4. High reliability and strong anti-vibration ability.
5, good high-frequency characteristics, reduce electromagnetic and rf interference.
6. Low defect rate of solder joints.
FR4, Alu, CEM3,Taconic,Rogers
Number of layers
Min.Thickness for inner layers
(Cu thickness are excluded)
Bow and twist
outer Cu weight
inner Cu weight
PTH hole tolerance
NPTH Hole tolerance
Min hole size
Min solder mask clearance
Flying probe tester
HASL,ENIG,immersion silver，immersion tin, OSP....