Molao-motheo: Filimi ea tlhaho e thehoa holim'a koporo ea boto ea potoloho, e sireletsang ka tieo holim'a koporo e ncha, hape e ka thibela oxidation le tšilafalo ka mocheso o phahameng. Botenya ba filimi ea OSP hangata bo laoloa ho li-microns tse 0.2-0.5.
1. Phallo ea ts'ebetso: ho senya → ho hlatsoa metsi → khoholeho e nyenyane → ho hlatsoa metsi → ho hlatsoa acid → ho hlatsoa metsi a hloekileng → OSP → ho hlatsoa metsi a hloekileng → ho omisa.
2. Mefuta ea lisebelisoa tsa OSP: Rosin, Active Resin le Azole. Lisebelisoa tsa OSP tse sebelisoang ke Shenzhen United Circuits hajoale li sebelisoa haholo li-OSP tsa azole.
Ts'ebetso ea kalafo ea OSP holim'a boto ea PCB ke eng?
3. Likarolo: flatness e ntle, ha ho na IMC e thehoa pakeng tsa filimi ea OSP le koporo ea letlapa la boto ea potoloho, e lumellang ho soasoa ka ho toba ha solder le boto ea potoloho ea koporo nakong ea soldering (ntle ho metsi), thekenoloji e tlaase ea mocheso, theko e tlaase (litšenyehelo tse tlaase. ) Bakeng sa HASL), matla a fokolang a sebelisoa nakong ea ts'ebetso, joalo-joalo E ka sebelisoa ka bobeli mapolanka a potoloho ea theknoloji e tlaase le li-substrates tse phahameng tsa density chip packaging. PCB Proofing Yoko board e hlahisa mefokolo: ① tlhahlobo ea ponahalo e thata, ha e lokele ho soasoa ka makhetlo a mangata (ka kakaretso e hloka makhetlo a mararo); ② Sebaka sa filimi sa OSP se bonolo ho se ngoa; ③ litlhoko tsa tikoloho ea polokelo li phahame; ④ nako ea ho boloka e khuts'oane.
4. Mokhoa oa ho boloka le nako: Likhoeli tsa 6 ka liphutheloana tsa vacuum (mocheso 15-35 ℃, mongobo RH≤60%).
5. Litlhoko tsa sebaka sa SMT: ① Boto ea potoloho ea OSP e tlameha ho bolokoa mochesong o tlase le mongobo o tlase (mocheso 15-35°C, mongobo RH ≤60%) le ho qoba ho pepesehela tikoloho e tletseng khase ea asiti, 'me kopano e qala ka hare ho 48. lihora ka mor'a ho manolla sephutheloana sa OSP; ② E khothalletsoa ho e sebelisa nakong ea lihora tse 48 ka mor'a hore sekhechana se nang le lehlakore le le leng se felile, 'me ho khothaletsoa ho se boloka ka har'a khabinete e nang le mocheso o tlase ho e-na le liphutheloana tsa vacuum;