Lub hauv paus ntsiab lus: Ib zaj duab xis organic yog tsim rau ntawm tooj liab ntawm lub rooj tsav xwm hauv Circuit Court, uas ruaj khov tiv thaiv qhov chaw ntawm cov tooj liab tshiab, thiab tuaj yeem tiv thaiv oxidation thiab kev ua qias tuaj ntawm qhov kub thiab txias.OSP zaj duab xis thickness feem ntau yog tswj ntawm 0.2-0.5 microns.
1. Cov txheej txheem ntws: degreasing → dej ntxuav → micro-erosion → dej ntxuav → acid ntxuav → dej ntshiab → OSP → ntxuav dej ntshiab → ziab.
2. Hom OSP cov ntaub ntawv: Rosin, Active Resin thiab Azole.Cov ntaub ntawv OSP siv los ntawm Shenzhen United Circuits yog tam sim no dav siv azole OSPs.
Dab tsi yog OSP txheej txheem kho ntawm PCB pawg thawj coj saib?
3. Nta: zoo flatness, tsis muaj IMC yog tsim los ntawm OSP zaj duab xis thiab tooj liab ntawm Circuit Court board ncoo, tso cai ncaj qha solder ntawm solder thiab Circuit Court board tooj liab thaum lub sij hawm soldering (zoo wettability), tsis tshua muaj kub ua technology, uas tsis muaj nqi (tsis muaj nqi. ) Rau HASL), lub zog tsawg yog siv thaum lub sij hawm ua, thiab lwm yam. Nws tuaj yeem siv rau ob qho tib si qis-tech circuit boards thiab high-density chip ntim substrates.PCB pov thawj Yoko board prompts lub shortcomings: ① zoo li kev soj ntsuam yog nyuaj, tsis haum rau ntau reflow soldering (feem ntau yuav tsum tau peb zaug);② OSP zaj duab xis nto yog ib qho yooj yim mus khawb;③ cia ib puag ncig yuav tsum muaj siab;④ Lub sijhawm khaws cia yog luv.
4. Txoj kev khaws cia thiab sijhawm: 6 lub hlis hauv lub tshuab nqus tsev ntim khoom (kub 15-35 ℃, av noo RH≤60%).
5. SMT qhov yuav tsum tau muaj: ① OSP Circuit Court board yuav tsum tau khaws cia ntawm qhov kub thiab txias (kub 15-35 ° C, av noo RH ≤60%) thiab tsis txhob raug rau ib puag ncig uas muaj cov roj acid, thiab kev sib dhos pib hauv 48 teev tom qab unpacking OSP pob;② Nws raug nquahu kom siv nws li ntawm 48 teev tom qab cov khoom ib leeg tiav lawm, thiab nws raug pom zoo kom khaws cia rau hauv lub txee uas tsis muaj qhov kub thiab txias es tsis txhob ntim khoom ntim;