Zininzi iinjineli ezingenamava kwishishini le-elektroniki.Iibhodi zePCB eziyilwe zihlala zineengxaki ezahlukeneyo ngenxa yokungahoywa kweetshekhi ezithile kwinqanaba lamva loyilo, olufana nobubanzi bomgca obungonelanga, icandelo leleyibhile yesilika yoshicilelo lwesikrini kwi- via emngxunyeni, isokethi iValwe kakhulu, imijikelezo yomqondiso, njl.njl. , iingxaki zombane okanye iingxaki zenkqubo zibangelwa, kwaye kwiimeko ezinzulu, ibhodi kufuneka iphinde iprintwe, ibangele inkunkuma.Elinye lamanyathelo abaluleke ngakumbi kwinqanaba lamva loyilo lwePCB kukuhlolwa.
Kukho iinkcukacha ezininzi kwi-post-check yoyilo lwebhodi yePCB:
1. Ukupakishwa kwecandelo
(1) Isithuba sepadi
Ukuba sisixhobo esitsha, kufuneka uzobe ipakethe yecandelo ngokwakho ukuqinisekisa isithuba esifanelekileyo.Isithuba sepadi sichaphazela ngokuthe ngqo i-soldering yamacandelo.
(2) Ngobungakanani (ukuba bukhona)
Kwizixhobo zeplug-in, ubungakanani bomngxuma odlulayo kufuneka bube nomda owaneleyo, kwaye ngokuqhelekileyo kufanelekile ukugcina ungekho ngaphantsi kwe-0.2mm.
(3) Chaza ushicilelo lwesikrini sesilika
Ushicilelo lwescreen solwandlalo lwesixhobo lungcono kunobungakanani benene ukuqinisekisa ukuba isixhobo sinokufakelwa ngokutyibilikayo.
2. Uyilo lwebhodi yePCB
(1) I-IC ayifanele isondele kumda webhodi.
(2) Izixhobo zesekethe yemodyuli efanayo kufuneka zibekwe kufutshane enye kwenye
Ngokomzekelo, i-decoupling capacitor kufuneka isondele kwi-pin yombane ye-IC, kunye nezixhobo ezenza isiphaluka esifanayo esisebenzayo kufuneka zibekwe kwindawo enye kuqala, kunye neengqimba ezicacileyo zokuqinisekisa ukuzaliseka komsebenzi.
(3) Lungiselela indawo yesokethi ngokofakelo lwangempela
Iziseko zonke zikhokelela kwezinye iimodyuli.Ngokwesakhiwo sangempela, ukwenzela ukuba kube lula ukufakela, umgaqo wokusondeza ngokuqhelekileyo usetyenziselwa ukulungelelanisa indawo yesokhethi, kwaye ngokuqhelekileyo isondele kumda webhodi.
(4) Nika ingqalelo kwisalathiso sesokethi
Iisokethi zonke zikhokelela, ukuba ulwalathiso lubuyiselwa umva, ucingo luya kufuneka lube ngokwezifiso.Kwiziseko zeeplagi ezisicaba, isalathiso sesokethi kufuneka sibheke ngaphandle kwebhodi.
(5) Makungabikho zixhobo kwindawo yokuGcina
(6) Umthombo wokuphazamiseka kufuneka ugcinwe kude kwiisekethe ezibuthathaka
Izibonakaliso zesantya esiphezulu, iiwotshi ezikhawulezayo okanye iimpawu zokutshintsha kwangoku zizonke ziyimithombo yokuphazamiseka kwaye kufuneka zigcinwe kude kwiisekethe ezibucayi, ezifana neesekethe zokusetha kwakhona kunye neesekethe ze-analog.Umgangatho ungasetyenziselwa ukuwahlula.
3. PCB ibhodi wiring
(1) Ubungakanani bobubanzi bomgca
Ububanzi bomgca kufuneka bukhethwe ngokwenkqubo kunye nomthamo wangoku wokuthwala.Ububanzi bomgca omncinci abunakuba buncinci kunobubanzi bomgca omncinci womenzi webhodi wePCB.Ngexesha elifanayo, umthamo wangoku wokuthwala uqinisekisiwe, kwaye ububanzi bomgca obufanelekileyo bukhethwa ngokubanzi kwi-1mm / A.
(2) Umgca wesignali owahlukileyo
Kwimizila ehlukeneyo efana ne-USB kunye ne-Ethernet, qaphela ukuba umkhondo kufuneka ube nobude obulinganayo, ngokulinganayo, kunye nakwindiza enye, kwaye isithuba sinqunywe yi-impedance.
(3) Nika ingqalelo kwindlela yokubuya yemigca yesantya esiphezulu
Imigca enesantya esiphezulu iqhele ukuvelisa imitha ye-electromagnetic.Ukuba ummandla owenziwe ngumzila wokuhamba kunye nomzila wokubuyela ukhulu kakhulu, i-coil-turn-turn coil iya kuqulunqwa ukuze ikhuphe ukuphazamiseka kwe-electromagnetic, njengoko kuboniswe kuMzobo 1. Ngoko ke, xa uhamba, qaphela indlela yokubuyela ecaleni kwayo.Ibhodi ye-multi-layer inikezelwa ngoluhlu lwamandla kunye nenqwelomoya yomhlaba, enokusombulula ngempumelelo le ngxaki.
(4) Nika ingqalelo kumgca wesignali ye-analog
Umgca wesignali ye-analog kufuneka uhlukaniswe kwisignali yedijithali, kwaye i-wiring kufuneka igwenywe ngokusemandleni ukusuka kumthombo wokuphazamiseka (njengewotshi, umbane we-DC-DC), kwaye i-wiring kufuneka ibe mfutshane kangangoko kunokwenzeka.
4. Ukuhambelana kwe-Electromagnetic (EMC) kunye nengqibelelo yesiginali yeebhodi zePCB
(1) Ukuchasa ukupheliswa
Kwimizila yesantya esiphezulu okanye imigca yesignali yedijithali ene-frequency ephezulu kunye nemikhondo emide, kungcono ukubeka i-resistor ehambelanayo kwichungechunge ekupheleni.
(2) Umgca wesignali yegalelo uxhunywe ngokuhambelana ne-capacitor encinci
Kungcono ukudibanisa igalelo lomgca wesignali kwi-interface kufuphi ne-interface kwaye udibanise i-picofarad capacitor encinci.Ubungakanani be-capacitor bunqunywe ngokwamandla kunye nokuphindaphinda komqondiso, kwaye akufanele kube mkhulu kakhulu, ngaphandle koko ukunyaniseka komqondiso kuya kuchaphazeleka.Ukufumana iimpawu zesantya esisezantsi, njengegalelo eliphambili, i-capacitor encinci ye-330pF ingasetyenziswa, njengoko kuboniswe kuMfanekiso 2.
Umzobo 2: Ibhodi yePCB design_input umgca wesignali eqhagamshelwe kwi-capacitor encinci
Umzobo 2: Ibhodi yePCB design_input umgca wesignali eqhagamshelwe kwi-capacitor encinci
(3) Isakhono sokuqhuba
Ngokomzekelo, umqondiso wokutshintsha kunye nomqhubi omkhulu wokuqhuba unokuqhutywa yi-triode;kwibhasi enenani elikhulu le-fan-outs, isithinteli singongezwa.
5. Ushicilelo lwescreen sebhodi yePCB
(1) Igama lebhodi, ixesha, ikhowudi ye-PN
(2) Ukuphawula
Phawula izikhonkwane okanye imiqondiso engundoqo yolunye ujongano (olufana noluhlu).
(3) Ileyibhile yecandelo
Iileyibhile zecandelo kufuneka zibekwe kwiindawo ezifanelekileyo, kwaye iilebhile zecandelo elixineneyo zinokubekwa ngokwamaqela.Qaphela ukuba ungayibeki kwindawo yokudlula.
6. Phawula inqaku lebhodi yePCB
Kwiibhodi zePCB ezifuna ukuthengiswa komatshini, amanqaku amabini ukuya kwamathathu aMakisha kufuneka afakwe.
Ixesha lokuposa: Aug-11-2022