Look at the osp process of nickel gold layer of 华体会体育·（中国）股份有限公司官网 proofing plate

The method for preventing the nICkel gold layer of the selective 华体会体育·（中国）股份有限公司官网from being corroded mainly includes step A: manufacturing the selective 华体会体育·（中国）股份有限公司官网; B: Immerse the concentrator board in the aqueous phase sealing agent solution with the concentration of 5% - 15% and pH value of 8.5~9.5 for 1~2 minutes to form a protective film on the nickel gold layer of the concentrator 华体会体育·（中国）股份有限公司官网 board; C: OSP processing is performed for the selection. Before the OSP treatment of the selective plate, the selective plate is immersed in the aqueous phase pore sealing agent solution to form a protective film on the nickel gold layer of the selective 华体会体育·（中国）股份有限公司官网. When the OSP treatment is required, the micro etching agent cannot enter the atomic pores in the nickel gold layer, thus avoiding the corrosion and blackening of the nickel gold layer by the micro etching agent. The final surface treatment of 华体会体育·（中国）股份有限公司官网 board mainly includes OSP organic flux, chEMIcal tin, chemical silver, chemical nickel gold, lead-free tin spraying and rosin coating. Rosin coating will be gradually eliminated by the first five with the further improvement of environmental requirements.

 Compared with the five mainstream surface treatment methods, OSP has gained a large share of 华体会体育·（中国）股份有限公司官网 market with its low cost advantage

OSP organic flux, also known as water-soluble organic flux, is more popular in China as copper surface antioxidant, which is a lead-free, water-soluble and environmentally friendly product. By selectively depositing a layer of organic solder mask on the fresh copper surface of the 华体会体育·（中国）股份有限公司官网, it can avoid the poor tin coating caused by the oxidation of the copper surface of the 华体会体育·（中国）股份有限公司官网 before SMT/SMD. The organic film will be dissolved by the flux during the SMT/SMD process, and the fresh copper surface will be exposed, so the metal tin can be easily expanded and combined on the copper surface. The OSP treated 华体会体育·（中国）股份有限公司官网 board has a flat surface, which is very conducive to tin spreading.

华体会体育·（中国）股份有限公司官网 selection board

Because of the good prospect of OSP, most 华体会体育·（中国）股份有限公司官网 liquid medicine manufacturers will have commercialized OSP liquid medicine. The well-known brands in the industry are Shikoku's F2 series, Sanwa's CuCcoat GV, Tamura's WPF-21, and Enthone OMI's Cu-106A series. There are also some 华体会体育·（中国）股份有限公司官网 liquid medicine suppliers in China that can provide commercialized OSP liquid medicine The main processes of OSP are: degreasing/degreasing, abrasive brushing, micro etching and OSP film deposition.

The pre process of OSP has a very important influence on the deposition of OSP film. Poor pretreatment will lead to poor deposition effect of OSP film or even failure of OSP film deposition.