芯片焊接大法（绝对实用） A N 114 H A N D S O L D E R I N G TU T O R I A L FOR FINE PITCH QFP DEVICES Scope 5. Solder flux - liquid type in dispenser This document is intended to help designers create 6. Solder wick - size C 0.075" (1.9 mm) their initial prototype systems using Silicon Lab's TQFP and LQFP devices where surface mount 7. Magnifier - 4X minimum. An inexpensive assembly equipment is not readily available. This headset OptiVISOR by Donegan Optical Co. is application note assumes that the reader has at least used for this example. basic hand soldering skills for through-hole solder- ing. The example presented will be the removal, 8. ESD mat or tab……