PCB wiring uyilo, ukuze kuphuculwe ilaphu ngomlinganiselo iseti epheleleyo yeendlela, apha, ukubonelela uyilo PCB ukuphucula isantya ilaphu ngomlinganiselo woyilo ngempumelelo kunye nobuchule obusebenzayo, hayi kuphela kubathengi ukugcina umjikelo wophuhliso lweprojekthi, kodwa nokwandisa umgangatho woyilo olugqityiweyo.
1. Qinisekisa inani leeleya zePCB
Ubungakanani bebhodi yesekethe kunye neentambo zocingo kufuneka zimiselwe ekuqaleni koyilo.Ukuba uyilo lufuna ukusetyenziswa kwe-high-density ball grid array (BGA) amacandelo, kuyimfuneko ukuba kuthathelwe ingqalelo inani elincinci lomaleko weentambo ezifunekayo kwi-wiring yezi zixhobo.Inani lee-wiring layers kunye ne-stack-up method inefuthe elithe ngqo kwi-wiring kunye nokuphazamiseka kweengcingo eziprintiweyo.Ubungakanani bebhodi bunceda ukugqiba indlela yokupakisha kunye nobubanzi beengcingo eziprintiweyo ukufezekisa uyilo olufunwayo.
Kuhlala kucingelwa ukuba imigangatho embalwa yebhodi, iphantsi kweendleko, kodwa kukho ezinye izinto ezininzi ezichaphazela iindleko zokuvelisa ibhodi.Kwiminyaka yakutshanje, umahluko weendleko phakathi kweebhodi ezininzi zincitshiswe kakhulu.Kungcono ukuqala uyilo kunye neengqimba ezininzi zokujikeleza kunye nokusabalalisa ubhedu ngokulinganayo ukuze ugweme ukunyanzeliswa ukuba ungeze iileyile ezintsha kufuphi nokuphela koyilo xa inani elincinci lezibonakaliso lifunyenwe ukuba alihambelani nemithetho kunye nendawo. iimfuno ezichaziweyo.Ukucwangcisa ngokucophelela ngaphambi koyilo kuya kunciphisa i-wiring kwiinkathazo ezininzi.
2. Yila imithetho kunye nezithintelo
Imigca yemiqondiso eyahlukeneyo ineemfuno ezahlukeneyo zocingo, ukuhlula zonke iimfuno ezikhethekileyo zomgca wesignali, iindidi ezahlukeneyo zokuyila azifani.Iklasi nganye yesignali kufuneka ibe neyokuqala, iphezulu iphambili, imithetho engqongqo.Imigaqo inxulumene nobubanzi bocingo oluprintiweyo, inani eliphezulu le-vias, i-parallelism, i-signal line interactions, kunye nokunciphisa umaleko, okunempembelelo ebalulekileyo ekusebenzeni kwesixhobo se-cabling.Ukuqwalaselwa ngokucokisekileyo kwiimfuno zoyilo kuyinyathelo elibalulekileyo kwi-wiring eyimpumelelo.
3. Uyilo lwamacandelo
Ukuze kuphuculwe inkqubo yokuhlanganisa, uyilo lwemithetho yokwenziwa kwezinto (DFM) ibeka izithintelo kubume becandelo.Ukuba isebe lendibano livumela ukunyakaza kwecandelo, isiphaluka sinokulungiswa ngokufanelekileyo, okwenza kube lula ukuzenzekelayo i-wiring.Imigaqo echaziweyo kunye nemiqobo ichaphazela uyilo loyilo.
Iitshaneli zomzila kunye neendawo kufuneka ziqwalaselwe ngexesha loyilo.Ezi ndlela kunye nemimandla zicacile kumyili, kodwa isixhobo socingo oluzenzekelayo siya kuqwalasela kuphela umqondiso ngexesha, ngokubeka imiqobo ye-wiring kwaye usete umaleko womgca wesignali inokuba ilaphu, unokwenza isixhobo socingo sibe ngathi. Umyili ucinge ukuba ukugqitywa kocingo.
4. Uyilo lwabalandeli
I-Fan ngaphandle kwinqanaba loyilo, ukwenza izixhobo zocingo ezizenzekelayo ukuba zidibanise izikhonkwane zokudibanisa, izixhobo zokunyuka komhlaba, isikhonkwane ngasinye kufuneka sibe nomngxuma omnye, ukwenzela ukuba kwimfuno yoqhagamshelwano olungaphezulu, ibhodi inokudityaniswa kumaleko angaphakathi, uvavanyo lwe-in-circuit (ICT) kunye nokuhlaziywa kweesekethe.
Ukuze wenze i-automated wiring tool eyona nto isebenzayo, kubalulekile ukusebenzisa elona likhulu kunokwenzeka ngesayizi kunye nocingo oluprintiweyo, kunye ne-spacing ebekwe kwi-50 mils efanelekileyo.Sebenzisa uhlobo lwe-vias eyandisa inani leendlela zendlela.Xa uyila i-fan-out, qwalasela uvavanyo lwe-in-circuit.Izixhobo zovavanyo zinokubiza kwaye zisoloko zi-odolwa xa imveliso epheleleyo ikufuphi, kwaye kusemva kwexesha ukuba kuqwalaselwe ukongeza iinodi ukuphumeza uvavanyo lwe-100%.
Emva kokuqwalaselwa ngononophelo kunye nolindelo, uyilo lovavanyo lwesekethe kwisekethe lunokwenziwa kwangoko kwinkqubo yoyilo kwaye luqondwe kamva kwinkqubo yokuvelisa, kunye nohlobo lwe-fan-out egqitywe yindlela yocingo kunye novavanyo lwesekethe kwisekethe, ngamandla kunye nokumisa kwakhona kuphembelela i-wiring kunye noyilo lwe-fan-out.Ukuze kuncitshiswe i-impedance ye-inductive eyenziwe ngumgca woxhulumaniso lwe-capacitor yokucoca, umngxuma ongaphezulu kufuneka ube kufutshane kangangoko kunokwenzeka kwizikhonkwane zesixhobo sokunyuka komphezulu, ukuba kuyimfuneko, ingasetyenziselwa indlela ngesandla, enokuba nefuthe umbono wokuqala wendlela yocingo, kwaye inokukhokelela ekubeni uqwalasele kwakhona ukusetyenziswa koluphi uhlobo lomngxuma ongaphezulu, kuyimfuneko ukuqwalasela ubudlelwane phakathi komngxuma ongaphezulu kunye ne-pin inductive impedance kunye nokuseta okuphambili kwe ingcaciso yomngxuma ngaphezulu.
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Ixesha lokuposa: Aug-22-2023