1, for the lead is gold-plated silver treatment of integrated circuits, just wipe the lead with alcohol.
2, for the CMOS circuit that shorted the leads in advance, the short route can not be cut off before welding, and should be cut off after welding.
3, the staff should wear the anti-static bracelet on the anti-static workbench for welding operations, the workbench should be clean and tidy.
4, handheld integrated circuit, should hold the outer package of the integrated circuit, can not touch the lead.
5, welding, should use 20W internal heat type soldering iron, and the soldering iron must be reliably grounded.
6, welding, each lead welding time can not exceed 4s, continuous welding time can not exceed 10s.
7, to use a low melting point of the flux, the general flux melting point should not exceed 150℃.
8, for the MOS tube, the installation should be first S pole, then G pole and finally D pole in the order of welding