Uyilo lwePCB ye-Mulble (iBhodi yeSekethe eprintiweyo) inokuba nzima kakhulu. Isibakala sokuba uyilo lufuna ukusetyenziswa okungaphezulu kweengqibelelo ezimbini kuthetha ukuba inani lesekethe elifunekayo aliyi kuba nakho ukufakwa kwindawo ephezulu nangaphantsi. Naxa isekethe ifanelekile kwezi zingqekembe zangaphezulu, umyili we-PCB unokuthatha isigqibo songeza amandla kunye neminqwazi engaphakathi ukuze unesiphene sentsebenzo.
Kwimicimbi ye-irrmal ukuya kwi-EMI ye-EMI (i-electromagnetic) okanye i-ESD (i-ESD (i-ESD (i-elektrostatic) imiba, zininzi izinto ezahlukeneyo ezinokukhokelela ekusebenzeni nasekufumaneni nasekupheliswe. Nangona kunjalo, nangona umsebenzi wakho wokuqala njengomyili kukulungisa iingxaki zombane, kubalulekile ukuba ungatyesheki ubumbeko lomzimba lweBhodi yeSiphaluka. Iibhodi ezingenamsebenzi zombane zisenokugoba okanye zijijeke, zenza ukuba kube nzima kwindibano okanye zingenakwenzeka. Ngethamsanqa, ingqalelo kwi-PCB yomzimba ngexesha lomjikelo woyilo uya kunciphisa iingxaki zendibano. Ibhalansi ye-Deler-to-Deler yenye yeendawo eziphambili zeBhodi yeSikethi esizinzileyo.
01
I-PCB eNgcolileyo
Ukujonga okuluncedo sisitaki apho indawo enomgangatho wecandelo kunye necandelo leBhodi yeSiphaluka eprintiweyo zombini ngokulinganayo. Injongo kukuphelisa iindawo ezinokuthi zisebenze xa ziphantsi koxinzelelo ngexesha lenkqubo, ngakumbi ngexesha lesigaba sokulwa. Xa iBhodi yeSekephethi iye yakhiwe, kunzima ukuyibeka iflethi ngenxa yendibano. Oku kuyinyani ngakumbi kwiibhodi zesekethe eziya kuthi zidityaniswe kwiNtaba yeNtaba yeBhola ezenzekelayo kunye neMigca yokuBela. Kwiimeko ezigqithisileyo, ukungcungcutheka kunokuthintela iNdibano yePCBA ehlanganisiweyo (iBhodi yeBhodi yeSiphaluka eprintiweyo) kwimveliso yokugqibela.
Imigangatho yokuhlola i-IPC kufuneka ithintele ezona bhodi zityhafileyo ezivela kwizixhobo zakho. Nangona kunjalo, ukuba inkqubo ye-PCB yovelwano ayiphelelwanga ngokupheleleyo kulawulo, emva koko unobangela wokugoba kakhulu kusahambelana noyilo. Ke ngoko, kucetyiswa ukuba ujonga ubume be-PCB kwaye wenze uhlengahlengiso oluyimfuneko ngaphambi kokubeka iodolo yakho yokuqala. Oku kunokubangela izivuno ezibi.
02
Icandelo leBhodi yeSekethe
Isizathu esiDibeneyo esiDibeneyo kukuba iBhodi yeSiphaluka eprintiweyo ayiyi kuba nakho ukufezekisa iflethi eyamkelekileyo kuba ulwakhiwo lwayo lomnqamlezo luyi-asymmetric malunga neziko layo. Umzekelo, ukuba uyilo lwe-8-Wellist lusebenzisa imiqondiso emi-8 okanye ubhedu ngaphezulu kweziko lubandakanya iindiza zasekuhlaleni kunye ne-4 itafile kwelinye icala le-stack ingekabikho emva kokufudumeza nokucinezelwa, yonke imilebe iya kutshitshiswa.
Ke ngoko, kuyinto elungileyo yokuyila i-stack ukuze udidi lobuqhetseba (inqwelomoya okanye uphawu) lubonakaliswe ngokubhekisele kwiziko. Kumfanekiso ongezantsi, iindidi eziphambili nezantsi zihambelana, l2-L7, L3-L3 kunye ne-L4-L5 umdlalo. Mhlawumbi i-copper yobhedu kuzo zonke iimbonisekiso ziya kuthelekiswa, ngelixa isambatho seplashe senziwe ikakhulu sisithethi esiqinileyo. Ukuba le yimeko, iBhodi yeSekephethi inethuba elihle lokugqibezela umphezulu weflethi, umphezulu ofanelekileyo kwindibano ezenzekelayo.
03
I-PCB Deechtric Ubir
Ikwangumkhwa olungileyo wokulinganisa ubungqingqwa bomaleko wesidlo sayo yonke i-stack. Ngokufanelekileyo, ubukhulu bomsebenzi ngamnye wedlegitric kufuneka bubonakaliswe ngendlela efanayo uhlobo lwe-biber luchwethezwe.
Xa ubukhulu buhlukile, kunokuba nzima ukufumana iqela lezinto ezibonakalayo ekulula ukwenziwa. Ngamanye amaxesha ngenxa yeempawu ezinje nge-Antenna yokuThola, i-Asymmetric Start ingenakufikelelwa, kuba umgama omkhulu ophakathi komkhondo we-Annena kunye nendiza kwindiza yayo ingafuneka, kodwa nceda uqhubeke. Olunye ukhetho. Xa i-Delecric Sping yeDelecric iyafuneka, uninzi lwabavelisi luya kucela okanye batyeshele ngokupheleleyo ukudideka, kwaye ukuba abanakuyeka, banokuyeka umsebenzi. Abafuni kwakha iibatch ezininzi ezinqabileyo ezinesivuno esisezantsi, kwaye ekugqibeleni bafumana iiyunithi ezifanelekileyo ezifanelekileyo ukuze bahlangabezane nenani le-odolo yoqobo.
04
Ingxaki yokulinganisa i-PCB
I-Bows kunye ne-twist zezona ngxaki ziqhelekileyo. Xa i-stack yakho ayilungelelaniswanga, ikho enye imeko ebangela impikiswano ekuhlolweni kokugqibela - ubukhulu bePCB kwiindawo ezahlukeneyo kwiBhodi yeSiphalukana ziya kutshintsha. Le meko ibangelwa kukubonakala okubonakala kancinci kuyilo oluncinci kwaye kungaqhelekanga, kodwa kunokwenzeka ukuba ubeko lwakho luhlala lubanzi Ihlala ibonwa kwiibhodi ezisebenzisa ii-ouns ezi-2 zobhedu kunye nenani eliphezulu leendawo. Kwenzeka ntoni ukuba enye indawo yeBhodi yayinendawo enkulu yendawo ethululwayo, ngelixa enye inxenye yayingenasimahla kobhedu. Xa ezi zigqwirha zihlaselwe, icala lobhedu licinezelwe phantsi kubunzima, ngelixa icala elingenasimahla okanye elisimahla licinezelwe phantsi.
Uninzi lweebhodi zesekethe zisebenzisa isiqingatha se-over okanye i-1 yobhedu aliyi kuchaphazeleka, kodwa olunzima kakhulu, kokukhona ilahleko enkulu. Umzekelo, ukuba une-8 yeengca ze-3 yee-ounces ze-3 zobhedu, iindawo ezinomsindo wobhedu oluncinci ngokulula zinokuwela phantsi kwengqondo yobukhulu becala. Ukuthintela oku kungenzeki, qiniseka ukuba ugalele ngokulinganayo kulo lonke icala. Ukuba oku akunakwenzeka ukuba kuthathelwe ingqalelo umbane okanye ububanzi, ubuncinci ukongeza ezinye iingcango kwi-Holes kwi-Wight Shopper Fair kwaye uqiniseke ukubandakanya iipads kwimingxunya nganye. Le mibutho / izakhiwo zepad ziya kubonelela ngenkxaso yoomatshini kwi-Axis ye-Y Axis, ngaloo ndlela kuncitshiswa ukuphulukana nobungqingqwa.
05
Nikela impumelelo
Naxa beyila kwaye beyila i-PCBS ye-Winde-Winder, kufuneka unikele ingqalelo kuzo zombini iindlela zombane kunye nobume bomzimba, nokuba ufuna ukulalanisa kwezi zinto zimbini ukufezekisa uyilo olusebenzayo nolwenziwe ngefeni. Xa kunzima ngeendlela ezahlukeneyo, hlala ucinga ukuba kunzima okanye akunakwenzeka ukugcwalisa icandelo ngenxa yesaphetho sesaphetha kunye nepemethe, uyilo lweempawu zombane ezigqibeleleyo azisebenzi kancinci. Lungiselela i-stack kwaye unikele ingqalelo ekusasazeni kobhedu kwi-sunder nganye. La manyathelo anyusa ithuba lokufumana iBhodi yeSekethe ekulula ukuhlanganisana kwaye afake.