Via yemunharaunda yemhangura ukobvu yakatetepa uye zvakare gomba rakavhurika PCB indasitiri yekugadzira yakatarisana pamwe, imwe yeakakomba ehunyanzvi nyaya munguva yapfuura kurudyi gomba hurukuro yakavhurika uye zvinyorwa zvekutsvaga zvakaganhurirwa muPCBB bhodhi sisitimu sarudzo yeplank, jira reiyo CTE yemafuta ekuwedzera coefficient yakakura, gare gare musangano kutonhora uye kupisa kupisa kwakakonzera gomba kutsemuka kutadza kesi kuongororwa, senge kugadzira mhangura pasina kubva kuPCB pachayo, Hole mhangura electroplating kuongorora uye kugadzirisa matambudziko. Iri bepa rinoongorora chikonzero chendarira yakatetepa mugomba kubva pachinhu chePCB electroplating, uye inotiudza maitiro ekudzivirira PCB kukundikana kunokonzerwa nedunhu rakavhurika nekuda kwendarira yakatetepa mugomba kubva padanho re electroplating.

Kazhinji kutaura, mazhinji egomba remhangura hukobvu hwetsika bhodhi redunhu rinodiwa pakati pe0.8-1mil. Kana ari mamwe emabhodhi ematunhu akakwirira, akadai seHDI, nekuti gomba rakapofomara harisi nyore kusarudza electroplate uye kuti riite waya yakatetepa, izvo zvinodiwa mugomba ukobvu hwemhangura zvichadzikiswa zvine mwero, saka kunewo hushoma hwakapedzwa gomba remhangura ukobvu ye 0.4mil kana zvimwe zvakatemwa. Nekudaro, kune mamwe akasarudzika makesi, akadai semabhodhi makuru edunhu masisitimu anoda gomba kukora kwe0.8mil kana kupfuura nekuda kwegungano rakakosha uye kudikanwa kwekuvimbika kwenguva refu yekushandisa. MuIPC-6012, pane yakajeka giredhi remhangura kumeso kwegomba, saka nderipi gomba gomba kutsanangurwa kunodiwa, zvinoenderana nezvinodiwa zvechigadzirwa, pakupedzisira zvinotsanangurwa nemutengi.

Pcb mugomba mhangura ukobvu mwero uye apedza mhangura ukobvu kuumbwa

Iyi inotevera chati yekuyerera yakajairika yePBB yakajairwa:

Pcb mugomba mhangura ukobvu mwero uye apedza mhangura ukobvu kuumbwa

Pcb mugomba mhangura ukobvu mwero uye apedza mhangura ukobvu kuumbwa

Tinogona kuona zvakajeka kubva kumaviri manhamba, yedu PCB yakapedza mhangura ukobvu ndeye pcb base mhangura ukobvu uye ukobvu ndiro yemagetsi nemagetsi, pakupedzisira, izvo zvakapedzwa ukobvu hwemhangura hwakakura kupfuura hwendefa pcb, uye isu tese tiri PCB mugomba mhangura ukobvu, zvinozadzikiswa mune mbiri maitiro e electroplating, ndiko kuti, ukobvu hwese ndiro hodhi yakanamirwa pamhangura electroplating mhangura ukobvu uye magiraidhi.

Iyo yakapera mhangura ukobvu hwePCB inoumbwa neiyo base mhangura ukobvu hwePCB pamwe neiyo yekupedzisira ukobvu hwemabhodhi emagetsi uye girafu magetsi, ndokuti, iyo yakapera mhangura ukobvu hwakakura kupfuura hwaro mhangura yePCB. Ukobvu hwemhangura yemakomba ese ePBB yedu inopedzwa neelectroplating munzira mbiri, ndiko kuti, ukobvu hwemhangura yemakomba akaomeswa ebhodhi rese uye nekukora kwemhangura kwemagetsi akasarudzika.

Zvakajairika zvapedza zvigadzirwa 1OZ yakapedza mhangura ukobvu, gomba mhangura zvinoenderana neIPC nhanho 2 yakajairwa, kazhinji mhangura (yakazara ndiro yakanamirwa pamadziro) ukobvu we 5-7um, maviri mhangura (graphic plating) ukobvu hwe 13-15um, saka gomba remhangura ukobvu pakati pe18 -22um, pamwe nekucheka uye zvimwe zvikonzero zvinokonzerwa nekurasikirwa, yekupedzisira gomba mhangura ingangoita 20UM.

Standard zvinodiwa zvendarira ukobvu mugomba (IPC-6012B, GJB 362A-96, QJ3103-99)

Pcb mugomba mhangura ukobvu mwero uye apedza mhangura ukobvu kuumbwa

Kuburikidza neburi electroplating chinhu chakakosha kwazvo muPCB yekugadzira maitiro. Kuti uone kubatana kwemagetsi kwematanho akasiyana esimbi inoitisa, mhangura ine yakanaka magetsi conduction inoda kuiswa pamadziro egomba repaburi. Nemakwikwi anowedzera anotyisa ezvigadzirwa zvemagetsi, inosungirwa kuisa pamberi zvinodiwa pamusoro pekuvimbika kwezvigadzirwa zvePBB, uye hukobvu hwepakati nepaburi electroplating layer rave chimwe chezvinhu kuyera kuvimbika kwePCB. Chinhu chakakosha chinokanganisa kukora kwemhangura kwegomba rePCB ndiko kudzika kwakadzika kwesimba rePCB.

An yakakosha indekisi kuongorora zvinoitwa pcb yakanamirwa pamuromo mugomba ndiko kufanana kwakaita mhangura unhani ukobvu mugomba. Mune indasitiri yePBB, yakadzika yakanamirwa pamadziro inotsanangurwa sechiyero cheiyo yemhangura yekukora ukobvu pakati pegomba kusvika kune yemhangura yekukora ukobvu pamuromo wegomba.

Kuti ugone kutsanangura zvirinani kugona kwekudzika kwakadzika, iyo ukobvu hwekuzarura chiyero, ndiko kuti, ukobvu hwehupamhi reshiyo, inowanzo shandiswa.

Pcb bhodhi haina kukora asi mukova wakakura, magetsi anogona kugoverwa muelectroplating maitiro ari akafanana yunifomu, iyo ion kupararira mugomba iri yakanaka, iyo electroplating mhinduro yakadzama yakanamirwa pamwero yekugona kukosha inowanzo kuve yakati kurei; Pane kupesana, kana iro reshiyo yeukobvu kusvika pakudarika iri yepamusoro, gomba remadziro rinoratidza chiitiko che “imbwa pfupa”, (chiitiko chendarira gobvu pamuromo uye mutete mutete uri pakati pegomba), iyo yakadzika yakanamirwa pamuromo. Kukwanisa kugeza kuri kushoma.

Yakakwira yakadzika yakanamirwa pamhepo chinzvimbo chine zvinotevera zvakanakira:

1. Kuvandudza kuvimbika

Kufanana kweukobvu hwesimbi yakasarudzika yemhangura pamadziro egomba yakagadziridzwa, iyo inopa vimbiso iri nani yekutonhora uye kupisa kwePCB mune inotevera nzvimbo yekumisikidza uye kushandiswa kwezvigadzirwa zvigadzirwa, kuitira kudzivirira kutadza mune ekutanga nhanho, kuwedzera hupenyu hwehupenyu hwezvigadzirwa uye nekuvandudza kuvimbika kwakanyanya kwezvigadzirwa.

2. Kuvandudza kushanda zvakanaka

Electroplating maitiro anowanzo ari “bottleneck” maitiro mune ekugadzira maitiro, iko kuvandudzwa kwekudzika kwakadzika kugona kunogona kupfupisa iyo nguva yekupaka, kunatsiridza kugadzirwa uye kugona.

3. Deredza zvigadzirwa zvekugadzira

Pcb mafekitori kazhinji anotenda kuti kana yakadzika yakanamirwa pamhepo chinzvimbo yakawedzera ne10%, izvo zvinhu mutengo unogona kuderedzwa neinenge 10%. Iyo chaiyo kubatsirwa kwechinhu chimwe ichi ingori miriyoni imwe chete yuan / gore, tisingataure zvakateedzana zvisina kunangana mabhenefiti mushure mekuvandudza chigadzirwa mhando.