Welcome to Well-Tech - one of the leading manufacturers and suppliers of PCB products in China. Our factory is engaged in PCB manufacturing and offering customized pb-free hasl surface finishing competitive price pcb for industrial control at competitive price. High reliability, strong diversity and expert advice are our characteristics. Please contact us if you have inquiry.
HASL-LF: HASL-LF deposition thickness is irregular, 1 µm to 10 µm. But it’s lead free with RoHS compliance. Not suitable for dense feet IC and BGA soldering, because it’s lack of flatness and uniformity. Its storage period is lower (approx. 18 months). The cost is lower than other finish.
Material /Laminate: FR4 TG150
Board thickness: 1.6mm
Copper weight: 2/1/1/2oz
The affect of surface treatment on soldering as below,