Chinangwa inokosha pcb pamusoro kurapwa kuti pave weldability zvakanaka kana zvemagetsi performance.Because chaiwo mhangura iri mhepo unowanzonyengera muchimiro oxides, hazvingaiti kuramba mhangura kwenguva refu, saka mhangura runodikanwa mamwe marapiro .
1.Hot Air Nhambo (Hal / HASL)
Hot mhepo munoenzanisa, aizivikanwawo mhepo inopisa solder munoenzanisa (soMunyengetero Hal / HASL), iyo zvemapuranga pamusoro pcb pamusoro muchidziisa yakaumbwa gaba solder (kutungamirira) uye akashandisa compressed mhepo kuti rose (furidza) sandara ano, kuti akadini marongera hwemhangura oxidation nemishonga, uye rinogona weldability pamusoro unhani layer.The solder uye mhangura dzakanaka achiumbwa pejoinhi kuumba compound.The pcb vanofanira kunyudzwa solder yakanyungudutswa panguva mhepo inopisa conditioning.The mhepo banga flushes nemvura solder pamberi solder solidifies.The mhepo banga kunogona kuderedza vaikunga ari solder pamusoro mhangura nomumativi kudzivirira Welding zambuko.
2.Organic Weldable Protective Agent (OSP)
OSP inodhindwa redunhu bhodhi (pcb) mhangura foil pamusoro Mabatirwo ruzivo imwe mhando kusangana zvinodiwa RoHS directive.OSP ndiko chidimbu kubva Organic Solderability zvisaora. It inonziwo iri Organic pokunamatidza firimu, hunonziwo yemhangura mudziviriri, uye ainziwo Preflux muna English.In Muchidimbu OSP munhu mishonga dzakachinjwa paiva makemikari ganda pamusoro pemvura yakachena, vakashonga copper.This firimu ane Anti oxidation, chafariz kuvhunduka uye mwando nemishonga, izvo zvinogona kudzivirira yemhangura pamusoro kubva nengura (oxidation kana vulcanization) chaiye environment.But ari nekutambira nomoto kupisa, unodzivirira firimu uye anofanira kukurumidza kubviswa nokuda zvinoyerera nyore, saka chete anogona munonatsa mhangura pose anoratidza ari pfupi nguva solder yakanyungudutswa pakarepo kuva hwakasimba solder majoini.
3.Full Plate nickel / Gold
Plate nickel / Gold iri kuifukidza pamusoro pemvura pcb uye ipapo kuifukidza marongera chendarama. The nickel yakanamirwa pamifananidzo iri kunyanya kudzivisa diffusion ndarama uye copper.Now pane mhando mbiri electroplating nickel goridhe: nyoro goridhe yakanamirwa pamifananidzo (goridhe, ndarama pamusoro anotarira haana inopenya) uye zvakaoma nendarama yakanamirwa pamifananidzo (pamusoro ndiko kumeso uye zvakaoma, pfeka-tichidzivisa , ane zvimwe zvinhu zvakadai cobalt, ndarama anotarira zvakawanda chiedza) .Soft goridhe dzinowanzotsigi- kushandiswa Chip kavha goridhe waya; The zvakaoma goridhe dzinowanzotsigi- kushandiswa zvemagetsi interconnection mune dzisiri nomoto nzvimbo.
4.Immersion Gold
kunyudza goridhe zvinenge zvakazara gobvu, electrically yakanaka nickel-goridhe chiwanikwa pamusoro yemhangura pamusoro, izvo zvinogona kudzivirira pcb kwenguva refu time.In Uyezve, rune kubvumirawo zvimwe pamusoro kurapwa technologies.In Uyezve, kunyura goridhe kunogonawo pokutaura hwemhangura, iyo kuchabatsirawo kutungamirira-akasununguka gungano.
5.Immersion Tin
Sezvo solders zvose dzinobva netini, netini rukoko anogona kuwirirana mhando solder.Tin muitiro pakati sandara mhangura gaba yeimwe inogona kuumbwa, chikamu ichi chinoita rinorema gaba ane akafanana mhepo inopisa munoenzanisa kuti weldability zvakanaka uye hapana mhepo inopisa nokuputsa flatness pamusoro nemusoro dambudziko; kunyudza gaba haagoni inochengeterwa yakarebesa uye anofanira vakaungana maererano kugadzirisa gaba.
6.Immersion Silver
The sirivha kwacho iri pakati makemikari unhani uye electroless nickel yakanamirwa pamifananidzo. Zvichiitika nyore uye fast.Even kana pachena kuti vakuchidzire, mwando kusvibiswa, sirivha anogona kuramba weldability zvakanaka asi acharasikirwa kwayo luster.The sirivha haana simba zvakanaka kwemakemikari yakanamirwa pamifananidzo nickel / kunyura ndarama nekuti hakuna nickel pasi sirivha rukoko.
7.ENEPIG (Electroless nickel Electroless Palladium kunyudza Gold)
tichienzanisa ENEPIG uye ENIG, pane chimwezve paiva palladium pakati nickel uye goridhe. Palladium kunogona kudzivisa ngura Fani anokonzerwa kuzvitsinhanisa maitiro, uye kuti kugadzirira zvizere kunyudza gold.Gold hwakada yakafukidzwa palladium kungotaurwa inowanikwa akanaka.
8.Plating Hard Gold
Kuti uvandudze kusakara-kuramba pfuma yacho chigadzirwa, kuwedzera kupinza nhamba yakanamirwa pamifananidzo nendarama rakaoma.
