PCB uyilo loyilo kufuneka lulandele le migaqo ilandelayo:

a) Ukulungelelanisa ngokufanelekileyo indawo yamacandelo kunye nokwandisa ukuxinana kwamacandelo kangangoko kunokwenzeka ukwenzela ukunciphisa ubude bocingo, ukulawula i-crosstalk kunye nokunciphisa ubungakanani bebhodi eprintiweyo;

b) Izixhobo ezinengqondo ezineempawu ezingenayo neziphumayo kwibhodi eprintiweyo kufuneka zibekwe kufutshane nesinxibelelanisi kangangoko kunokwenzeka kwaye zicwangciswe ngolandelelwano lonxibelelwano lwesekethe kangangoko kunokwenzeka;

c) Uyilo lwezowuni. Ngokwenqanaba lengqiqo, ixesha lokuguqulwa kwesignali, ukunyamezela ingxolo kunye nokudityaniswa kwengqiqo yamacandelo asetyenzisiweyo, amanyathelo afana nokwahlula okuhambelanayo okanye ukuhlukana okungqongqo kwee-loops zamkelwe ukulawula ingxolo ye-crosstalk yokunikezelwa kwamandla, umhlaba kunye nomqondiso;

d) Beka ngokulinganayo. Ukulungelelaniswa kwamacandelo kuwo wonke umphezulu webhodi kufuneka ucoceke kwaye ulungelelanise. Ukuhanjiswa kwamacandelo okufudumeza kunye nokuxinana kwee-wiring kufuneka kube yinto efanayo;

e) Zifezekise iimfuno zokulahla ubushushu. Ukupholisa umoya okanye ukongeza i-heat sinks, i-air duct okanye indawo eyaneleyo yokutshatyalaliswa kobushushu kufuneka igcinwe; ukupholisa ulwelo, iimfuno ezihambelanayo kufuneka kuhlangatyezwane nazo;

f) Amalungu e-Thermal akufuneki abekwe malunga nezixhobo zombane ophezulu, kwaye umgama owaneleyo kufuneka ugcinwe ukusuka kwamanye amacandelo;

g) Xa amacandelo anzima kufuneka afakwe, kufuneka acwangciswe ngokusondeleyo kwindawo yokuxhasa ibhodi eprintiweyo ngokusemandleni;

h) Kufuneka ihlangabezane neemfuno zofakelo lwecandelo, ugcino kunye novavanyo;

i) Imiba emininzi efana noyilo kunye neendleko zokwenziwa kufuneka ziqwalaselwe ngokubanzi.

PCB wiring imithetho

1. Indawo yocingo

Le miba ilandelayo kufuneka iqwalaselwe xa kumiselwa indawo yocingo:

a) Inani leentlobo zezixhobo eziza kufakelwa kunye neetshaneli zocingo ezifunekayo ukudibanisa la macandelo;

b) Umgama phakathi kwepateni yokuqhuba (kubandakanywa umaleko wamandla kunye nomgangatho ophantsi) wendawo yocingo yomqhubi oprintiweyo ongachukumisi indawo yocingo eprintiweyo ngexesha lokwenziwa kolwandlalo kufuneka ngokuqhelekileyo ungabi ngaphantsi kwe-1.25mm ukusuka kwisakhelo sebhodi eprintiweyo;

c) Umgama phakathi kwepateni yokuqhuba yomgangatho ophezulu kunye ne-groove yesikhokelo akufanele ibe ngaphantsi kwe-2.54mm. Ukuba i-groove kaloliwe isetyenziselwa ukumisa, ucingo lomhlaba luya kusetyenziswa njengesakhelo.

2. Imigaqo yocingo

I-wiring yebhodi eprintiweyo kufuneka ilandele ngokubanzi le migaqo ilandelayo:

a) Inani leeleya zocingo zecondakta eziprintiweyo zichongwa ngokweemfuno. Umlinganiselo we-wiring occupied channel kufuneka ngokubanzi ube ngaphezu kwama-50%;

b) Ngokwemiqathango yenkqubo kunye noxinaniso lwee-wiring, khetha ngokufanelekileyo ububanzi bocingo kunye nesithuba socingo, kwaye sizame ukufaka i-wiring efanayo ngaphakathi kwendawo, kwaye ubuninzi beecingo zomaleko ngamnye ziyafana, ukuba kuyimfuneko, iipads ezincedisayo ezingasebenziyo okanye iingcingo eziprintiweyo kufuneka. kongezwa ekunqongophelweni kweendawo zocingo;

c) Imicwe emibini emeleneyo yocingo kufuneka ibekwe ngokuthe ngqo enye kwenye kwaye igobe okanye igotywe ukunciphisa amandla eparasitic;

d) Iintambo zeeconductors eziprintiweyo kufuneka zibemfutshane kangangoko, ngakumbi kwiisignali zefrikhwensi ephezulu kunye neentambo zesignali ezinovakalelo oluphezulu; kwimigca yomqondiso ebalulekileyo efana neewotshi, ukulibaziseka kocingo kufuneka kuthathelwe ingqalelo xa kuyimfuneko;

e) Xa imithombo yamandla emininzi (imigangatho) okanye umhlaba (imigangatho) ihlelwe kwinqanaba elifanayo, umgama wokuhlukana akufanele ube ngaphantsi kwe-1mm;

f) Kwindawo enkulu yeepateni zokuqhuba ezinkulu kune-5×5mm2, iifestile kufuneka zivulwe ngokuyinxenye;

g) Uyilo lokuhlukaniswa kwe-thermal kufuneka lwenziwe phakathi kwemizobo yendawo enkulu yendawo yokunikezelwa kwamandla kunye nomgangatho womhlaba kunye neepads zabo zokudibanisa, njengoko kuboniswe kuMzobo we-10, ukwenzela ukuba ungachaphazeli umgangatho we-welding;

h) Iimfuno ezizodwa zezinye iisekethe ziya kuhambelana nemimiselo efanelekileyo.

3. Ukulandelelana kweengcingo

Ukuze kuphunyezwe i-wiring egqwesileyo yebhodi eprintiweyo, ulandelelwano lwe-wiring lufanele lugqitywe ngokuhambelana novakalelo lwemigca yesignali eyahlukeneyo ukuya kwi-crosstalk kunye neemfuno zokulibaziseka kokudluliselwa kwentambo. Imigca yesignali yocingo oluphambili kufuneka ibe mfutshane ngokunokwenzeka ukwenza imigca yabo yokudibanisa ibe mfutshane kangangoko. Ngokuqhelekileyo, i-wiring kufuneka ibe ngolu hlobo lulandelayo:

a) Umgca womqondiso omncinci we-analog;

b) Imigca yemiqondiso kunye nemigca emincinci yemiqondiso enomdla ngakumbi kwi-crosstalk;

c) Umgca wesignali yewotshi yenkqubo;

d) Iintambo zomqondiso ezineemfuno eziphezulu zokulibaziseka kokuthunyelwa kweengcingo;

e) Umgca womqondiso jikelele;

f) Umgca ongatshintshiyo okanye eminye imigca encedisayo.