Pali mainjiniya ambiri osadziwa zambiri pamakampani opanga zamagetsi.The opangidwa PCB matabwa nthawi zambiri mavuto osiyanasiyana chifukwa kunyalanyaza macheke ena mu siteji yotsatira ya kamangidwe, monga osakwanira mzere m'lifupi, chigawo chizindikiro silika chophimba kusindikiza pa dzenje, zitsulo pafupi kwambiri, malupu chizindikiro, etc. , mavuto a magetsi kapena mavuto a ndondomeko amayamba, ndipo pazovuta kwambiri, bolodi iyenera kusindikizidwanso, zomwe zimapangitsa kuti ziwonongeke.Chimodzi mwamasitepe ofunikira kwambiri pamapangidwe a PCB ndikuwunika.
Pali zambiri pofufuza pambuyo pa PCB board:
1. chigawo ma CD
(1) Kutalikirana kwa mapadi
Ngati ndi chipangizo chatsopano, muyenera kujambula nokha phukusi kuti muwonetsetse kuti pali malo oyenera.The pad spacing mwachindunji zimakhudza soldering wa zigawo zikuluzikulu.
(2) Kudzera kukula (ngati alipo)
Pazida zamapulagi, kukula kwa dzenje kuyenera kukhala ndi malire okwanira, ndipo nthawi zambiri ndikofunikira kusungitsa zosachepera 0.2mm.
(3) Fotokozani zosindikiza za silika
Kusindikiza kwazithunzi za chipangizocho ndikwabwino kuposa kukula kwenikweni kuti zitsimikizire kuti chipangizocho chikhoza kukhazikitsidwa bwino.
2. PCB board masanjidwe
(1) IC siyenera kukhala pafupi ndi m'mphepete mwa bolodi.
(2) Zipangizo zamagawo amtundu womwewo ziyenera kuyikidwa pafupi ndi mnzake
Mwachitsanzo, decoupling capacitor iyenera kukhala pafupi ndi pini yamagetsi ya IC, ndipo zipangizo zomwe zimapanga gawo limodzi logwira ntchito ziyenera kuikidwa m'dera limodzi poyamba, ndi zigawo zomveka bwino kuti zitsimikizire kukwaniritsidwa kwa ntchitoyo.
(3) Konzani malo a soketi molingana ndi kukhazikitsa kwenikweni
Ma soketi onse amatsogozedwa ku ma module ena.Malinga ndi dongosolo lenilenilo, kuti zikhale zosavuta kukhazikitsa, mfundo yoyandikana nthawi zambiri imagwiritsidwa ntchito pokonza malo a socket, ndipo nthawi zambiri imakhala pafupi ndi m'mphepete mwa bolodi.
(4) Samalirani njira ya soketi
Ma sockets onse ndi olunjika, ngati njirayo yatembenuzidwa, waya ayenera kusinthidwa.Pazitsulo zapulagi lathyathyathya, mayendedwe a soketi ayenera kulowera kunja kwa bolodi.
(5) Pasakhale zipangizo m’dera la Keep Out
(6) Magwero a kusokoneza ayenera kusungidwa kutali ndi madera ovuta
Zizindikiro zothamanga kwambiri, mawotchi othamanga kwambiri kapena mawotchi apamwamba kwambiri ndizomwe zimasokoneza ndipo ziyenera kusungidwa kutali ndi mabwalo ovuta, monga mabwalo obwezeretsanso ndi ma analogi.Pansi angagwiritsidwe ntchito kuwalekanitsa.
3. PCB bolodi mawaya
(1) Kukula kwake kwa mzere
Mzere wa mzere uyenera kusankhidwa molingana ndi ndondomeko ndi mphamvu zonyamulira panopa.The ang'onoang'ono mzere m'lifupi sangakhale ang'onoang'ono kuposa ang'onoang'ono mzere m'lifupi mwake PCB gulu wopanga.Nthawi yomweyo, mphamvu yonyamulira pano ndiyotsimikizika, ndipo m'lifupi mwake mzere woyenerera nthawi zambiri amasankhidwa pa 1mm/A.
(2) Mzere wa chizindikiro chosiyana
Kwa mizere yosiyana monga USB ndi Ethernet, dziwani kuti zotsatizanazi ziyenera kukhala zotalika mofanana, zofanana, ndi ndege yomweyo, ndipo kusiyana kumatsimikiziridwa ndi cholepheretsa.
(3) Samalani njira yobwereranso ya mizere yothamanga kwambiri
Mizere yothamanga kwambiri imakonda kupanga ma radiation a electromagnetic.Ngati malo opangidwa ndi njira yodutsamo ndipo njira yobwererayo ndi yaikulu kwambiri, koyilo imodzi yokha idzapangidwa kuti iwonetsere kusokoneza kwa electromagnetic, monga momwe tawonetsera pa Chithunzi 1. Choncho, poyendetsa, tcherani khutu ku njira yobwerera pafupi nayo.Bolodi lamitundu yambiri limaperekedwa ndi mphamvu yamagetsi ndi ndege yapansi, yomwe imatha kuthetsa vutoli.
(4) Samalani ndi mzere wa chizindikiro cha analogi
Mzere wa chizindikiro cha analogi uyenera kulekanitsidwa ndi chizindikiro cha digito, ndipo mawaya ayenera kupeŵedwa momwe angathere kuchokera ku gwero losokoneza (monga wotchi, DC-DC magetsi), ndipo mawaya ayenera kukhala ochepa momwe angathere.
4. Electromagnetic compatibility (EMC) ndi kukhulupirika kwa ma PCB board
(1) Kukana kuthetsa
Kwa mizere yothamanga kwambiri kapena mizere ya digito yokhala ndi ma frequency apamwamba komanso kutsata kwautali, ndikwabwino kuyika chopinga chofananira pamndandanda kumapeto.
(2) Mzere wa chizindikiro cholowera umalumikizidwa mofanana ndi capacitor yaying'ono
Ndi bwino kulumikiza athandizira mzere chizindikiro kuchokera mawonekedwe pafupi mawonekedwe ndi kulumikiza yaing'ono picofarad capacitor.Kukula kwa capacitor kumatsimikiziridwa molingana ndi mphamvu ndi mafupipafupi a chizindikiro, ndipo sikuyenera kukhala kwakukulu, mwinamwake kukhulupirika kwa chizindikiro kudzakhudzidwa.Pazizindikiro zolowera mothamanga kwambiri, monga kulowetsa makiyi, kachidutswa kakang'ono ka 330pF chitha kugwiritsidwa ntchito, monga tawonera pa Chithunzi 2.
Chithunzi 2: PCB board design_input sign line yolumikizidwa ndi capacitor yaying'ono
Chithunzi 2: PCB board design_input sign line yolumikizidwa ndi capacitor yaying'ono
(3) Kukhoza kuyendetsa galimoto
Mwachitsanzo, chizindikiro chosinthira chokhala ndi mphamvu yayikulu yoyendetsa galimoto imatha kuyendetsedwa ndi triode;kwa basi yokhala ndi ma fan-out ambiri, buffer ikhoza kuwonjezeredwa.
5. Screen yosindikiza ya bolodi PCB
(1) Dzina la board, nthawi, PN code
(2) Kulemba zilembo
Chongani mapini kapena makiyi olumikizirana ena (monga masanjidwe).
(3) Chizindikiro cha zigawo
Zolemba zamagulu ziyenera kuyikidwa m'malo oyenera, ndipo zolemba zowuma zitha kuikidwa m'magulu.Samalani kuti musayike pamalo a via.
6. Mark mfundo ya bolodi PCB
Kwa matabwa a PCB omwe amafunikira kugulitsa makina, mfundo ziwiri kapena zitatu za Mark ziyenera kuwonjezeredwa.
Nthawi yotumiza: Aug-11-2022