1. Kupisa kwemhepo kukwirisa kwakaiswa pamusoro pePCB yakanyungudutswa tin lead solder uye inopisa yakadzvanywa mhepo yekuyera (kuvhuvhuta flat) maitiro. Kuigadzira iyo oxidation inodzivirira coating inogona kupa yakanaka weldability. Iyo inopisa mhepo solder nemhangura zvinoumba komboni yemhangura-sikkim panosangana, ine ukobvu hunosvika 1 kusvika 2mil.
2. Organic Solderability Preservative (OSP) kuburikidza nekukura nemakemikari coating pamhangura isina chinhu yakachena. Iyi PCB multilayer firimu inokwanisa kuramba oxidation, kupisa kuvhunduka, uye mwando kudzivirira nzvimbo yemhangura kubva kune ngura (oxidation kana sulfurization, nezvimwewo) pasi pemamiriro akajairika. Panguva imwecheteyo, pane inotevera kupisa kwekushisa, welding flux inobviswa nyore nyore nekukurumidza.

3. Ni-au kemikari yakavharidzirwa pamusoro pemhangura ine gobvu, yakanaka ni-au chiwanikwa chemagetsi kudzivirira PCB multilayer board. Kwenguva yakareba, kusiyana neOSP, iyo inongoshandiswa seyero yekudzivirira, inogona kushandiswa kwenguva refu yekushandiswa kwePCB uye kuwana simba rakanaka. Mukuwedzera, ine kushivirira kwezvakatipoteredza iyo mamwe maitiro ekurapa epamusoro haana.

4. Electroless sirivheri deposition pakati OSP uye electroless nickel / goridhe plating, PCB multilayer muitiro iri nyore uye nokukurumidza.

Kuratidzwa munzvimbo dzinopisa, dzakanyorova uye dzakasvibiswa dzichiri kupa kuita kwakanaka kwemagetsi uye kunaka kwemagetsi, asi kusvibisa. Nekuti hapana nickel pasi pe sirivheri layer, iyo sirivha yakanaya haina simba rose remuviri re electroless nickel plating/kunyudzwa kwegoridhe.

5.Conductor ari pamusoro pePCB multilayer board akaputirwa negoridhe nickel, kutanga nedhiri renickel uyezve nedhiri regoridhe. Chinangwa chikuru chenickel plating ndechekudzivirira kupararira pakati pegoridhe nemhangura. Kune marudzi maviri egoridhe-yakapetwa nickel: goridhe rakapfava (goridhe rakachena, zvinoreva kuti haritaridzike kupenya) uye goridhe rakaomarara (rakapfava, rakaomarara, risingapfeki, cobalt uye zvimwe zvinhu zvinotaridzika kupenya). Ndarama yakapfava ndiyo inonyanya kushandiswa kugadzira chip kurongedza goridhe mutsara; Goridhe rakaomarara rinonyanya kushandiswa kune isiri-welded yekubatanidza magetsi.

6. PCB yakasanganiswa pamusoro pekurapa tekinoroji inosarudza nzira mbiri kana kupfuura dzekurapa pamusoro, nzira dzinozivikanwa ndeidzi: nickel goridhe anti-oxidation, nickel plating goridhe kunaya nickel goridhe, nickel plating goridhe inopisa mhepo, nickel inorema uye goridhe rinopisa mhepo kuyera. Kunyange zvazvo shanduko yePCB multilayer surface treatment process haina kukosha uye inoratidzika kure-kure, inofanira kuonekwa kuti nguva yakareba yekuchinja inononoka inotungamirira kuchinja kukuru. Nekuwedzera kuri kuda kwekuchengetedzwa kwezvakatipoteredza, tekinoroji yekurapa kwepamusoro yePCB inosungirwa kuchinja zvakanyanya mune ramangwana.