Yintoni i PCB ifestile

Iingcingo ezikwi-PCB zigutyungelwe ngeoyile, ezinokuthintela ukujikeleza okufutshane kunye nokonakalisa isixhobo. Oku kubizwa ngokuba yifestile kukususa umaleko wepeyinti ocingweni, ukuze ucingo lubonakaliswe kwityin.

Uyila njani i-PCB yefestile yokuvula i-PCB uyicwangcisa njani iwindows yokuvula iwindows

Njengoko ubona kumfanekiso ongentla, kukungena ngefestile. Ukuvulwa kwefestile ye-PCB akuqhelekanga, kwaye eyona ixhaphakileyo yeyona imodyuli yememori. Abo kuni badibanise ikhompyuter bayazi ukuba imodyuli yememori inomnwe omnye wegolide, njengoko kubonisiwe kumfanekiso ongezantsi:

Uyila njani i-PCB yokuvula i-PCB uyilo lokuseta i-wiring ukuvula iwindow

Umnwe wegolide apha uthetha ukuvula ifestile, iplagi kunye nokudlala.

Ukuvulwa kwefestile kukwangumsebenzi oqhelekileyo, oko kukuthi, i-ayina yentsimbi yonyusa ubungakanani befoyile yobhedu kwinqanaba elilandelayo, elilungele ukugqitha ngoku, okuqhelekileyo kwibhodi yamandla nakwibhodi yolawulo lweemoto.

Vula iiWindows kunye nobhedu oluqaqambileyo kuyilo lwePCB

Kuyilo, sihlala sihlangabezana neemfuno zabathengi zokuvula iiWindows kunye nokuqaqamba ubhedu, kodwa kunzima kakhulu ukunxibelelana nabo kuba abathengi banolwazi oluncinci okanye asicacanga kakuhle ngale nkqubo. Kuyilo lwethu, bahlala behlangana nabathengi kufuneka bongeze isiciko sekhuselo, ipleyiti yomda ubhedu oluqaqambileyo lwasekhaya, ngokusebenzisa umngxuma ovulekileyo wokunyusa i-welding, i-IC isinki yokufudumeza umva ubhedu obonakalisiweyo, iphedi ye-tin ebiweyo njalo njalo. Ngokwemeko eyiyo, masiqwalasele eminye imifanekiso ukucacisa.

1. Ukhuselo olukhuselayo

Ukuba umthengi ufuna ukongeza isiciko sokukhusela, into ekufuneka siyenzile kukongeza i-soldmask enobubanzi okungenani be-1mm. Kufuneka siqinisekise kunye nomthengi nokuba ngaba sifuna ukongeza umnatha wentsimbi. Xa usongeza iSoldmask, kufuneka sibeke isikhumba sobhedu somnatha womhlaba kwindawo yokongeza iSoldmask. Inqwelomoya weSoldmask kufuneka igqunywe, kungenjalo i-substrate iya kutyhilwa (FR4, njl.). Olunye uthungelwano olungelulo lomhlaba akufuneki luwele i-Soldmask. Yongeza indawo yeSoldmask kwimpembelelo yePCB ukuveza ubhedu omthubi. Iindawo ezingafakwanga ziya kugutyungelwa yi-solder blocking.

Uyila njani i-PCB yokuvula i-_PCB yoyilo ukuba ucwangcisa njani iwindows yokuvula

2, iwelding umngxuma wefestile

Kuyilo, sihlala sisiva umngxunya webhodi iphela okanye umngxunya weplagi yangaphakathi, xa usongeza imingxunya, sinika ingqalelo igama lenkampani yomngxunya we-plug ugcwaliswe nge-BGA, ngokuchaseneyo, akukho BGA yimingxunya yewindows edibeneyo (inkampani yethu imigaqo). Ukucaciswa kwenkampani ngokubanzi kudlula kwimingxunya eyi-12mil kufuneka ifakwe imingxunya yefestile.

Uyila njani i-PCB yokuvula i-_PCB yoyilo ukuba ucwangcisa njani iwindows yokuvula

3, IC pad ukusasaza ubushushu

Ngokubanzi, ngasemva IC ukusasaza ubushushu iphedi yongeza iwelding iwindow (yongeza i-soldmask yangasemva enkulu okanye elingana nephedi yomphezulu) kunye nomngxuma, kwaye ngasemva kwesinyithi sobhedu, ukuze ubeke ngcono ubushushu umngxuma ngasemva kwesikhumba sobhedu uphume ngcono.

Uyila njani i-PCB yokuvula i-_PCB yoyilo ukuba ucwangcisa njani iwindows yokuvula

4. Ukuba iiphedi zepati

Kwi-soldering ye-wave, ukusombulula ingxaki yokuqhagamshela i-tin ebangelwe kukususwa kweepads, siya kusebenzisa uhlobo lweetadpole zeetini zebiwe. Qaphela ulusu lobhedu olunobungakanani obufanayo njengoko i-solder kufuneka ifakwe.

Uyila njani i-PCB yokuvula i-_PCB yoyilo ukuba ucwangcisa njani iwindows yokuvula

Ungayiqonda njani i-tin kwiwindows ye-PCB yewiring

Isiphaluka sifuna ukuqhuba i-8-channel relay, xa i-relay ye-multi-channel ivaliwe xa ukwanda kwangoku, ukwenzela ukuba kuqinisekiswe umphumo wangempela, ekwandiseni umgca wangoku ngexesha elifanayo, kunethemba lokususa ukuxhathisa kwe-welding Umaleko womgca wangoku-ugcino lweoyile eluhlaza, emva kokuba ibhodi yenziwe, ungongeza i-tin phezulu, ukutyeba umgca, ungadlula ngaphezulu ngoku.

Ezona ziphumo zezi zilandelayo:

Uyila njani i-PCB yokuvula i-_PCB yoyilo ukuba ucwangcisa njani iwindows yokuvula

Indlela yokuphunyezwa yile ilandelayo:

Zoba nje umgca kwi-ToPlayer (okanye ezantsiLayer ngokuxhomekeke kuloluphi umgca umgca osetiweyo uku) ungqameko, uze uzobe umgca ohambelana nawo kwi-Topsolder (okanye ezantsi solder).

Uyilo lwePCB ukuseta iwindows

Uyilo lwe-CB lunokuseta iingcingo kwi-TOP / BOTTOM SOLDER layer.

TOP / BOTTOM SOLDER oyile eluhlaza oyile: Coat TOP / BOTTOM umaleko nge SOLDER ioyile eluhlaza ukuthintela i-tin ekugqobeni ifoyile yobhedu kunye nokugcina ubushushu.

Ukuvalwa kwefestile yeoyile eluhlaza kungasetwa kwiphedi, ngembobo kunye nokungabikho kombane kolu luhlu.

1. Ngokuzenzekelayo, iphedi iya kuvula ifestile kuyilo lwe-PCB (NGOKUPHELELEYO: 0.1016mm), oko kukuthi, iphedi iveza ifoyile yobhedu, yandisa i-0.1016mm, kwaye i-tin iya kongezwa ngexesha lokujikeleza kwe-wave. Akukho tshintsho loyilo lukhuthazwayo ukuqinisekisa ukuqiniswa;

2. Ngokuzenzekelayo, umngxunya uya kuvula ifestile kuyilo lwePCB (ISICELO: 0.1016mm), oko kukuthi, umngxunya uya kuveza ifoyile yobhedu, wandise u-0.1016mm, kwaye itoti iya kongezwa ngexesha lokujikeleza kwe-wave. Ukuba uyilo kukuthintela i-tin ukuba ingangeni emngxunyeni kunye nobhedu ekuphumeni, kuya kufuneka ujonge ukhetho lwe-PENTING kulongezo lomngxunya kwi-SOLDER MASK ukuvala umngxunya.

3, ukongeza, olu luhlu lunokuzimela ngaphandle kweentambo zombane, i-welding ukumelana neoyile eluhlaza ehambelana nokuvulwa kwewindow. Ukuba ikwicingo lefoyile yobhedu, isetyenziselwa ukonyusa umthamo okhoyo ngoku wocingo, kwaye ukuqhubekiswa kwe-tin kuyongezwa xa kusenziwa iwelding; Ukuba ikwicingo le-foil elingelobhedu, ngokubanzi yenzelwe ilogo kunye noshicilelo olukhethekileyo lwescreen somlinganiso, kwaye umaleko wokuprinta isikrini somlinganiswa unokungashiywa.