Uyilo lwe Ibhodi PCB uhlala eneengxaki ezinje nezinjalo? Namhlanje ndiyayithanda inkqubo yenethiwekhi xiaobian icebise ukuba eli nqaku libandakanyeke kuyilo lwebhodi ye-PCB iminyaka emininzi yeenjineli, amava eplani eprintiweyo ebhodi yesekethe ukuze abelane nawe. Wamkelekile ukuqokelela!

Iimveliso ze-elektroniki, uyilo lwebhodi ye-PCB yinkqubo yoyilo eyimfuneko ukusuka kumzobo wombane ukuya kwimveliso ethile, kunye nokuqiqa koyilo lwayo kuhambelana kakhulu nemveliso kunye nomgangatho wemveliso. Nangona kunjalo, kubantu abaninzi ababandakanyeka kuyilo lwe-elektroniki, abanamava ambalwa kule nkalo. Nangona bafundile uyilo lwebhodi yePCB, Kodwa ukuyila kwePCB kuhlala kuneengxaki. Injineli eyacetyiswa nguXiaobian ibisenza uyilo lwebhodi ye-PCB iminyaka emininzi. Uya kuthi abelane ngamava akhe kuyilo lwebhodi yesekethe eprintiweyo kunye nawe, ngethemba lokudlala indima yokwenza isitena ukutsala ijeyidi. Isoftware yoyilo lwePCB ekhuthazwe yinjineli yayiyiTANGO kwiminyaka embalwa edlulileyo, kwaye ngoku isebenzisa iPROTEL2.7 YOKUFUNDA NGOKUQALA.

Uyilo lwePCB

Umyalelo oqhelekileyo wokubekwa kwezinto kwi-PCB:

1, beka izinto kwindawo emileyo ngokusondeleyo kulwakhiwo, njengesokethi yamandla, ukukhanya kwesikhombisi, iswitshi, isinxibelelanisi, njl.njl. zihanjiswe ngempazamo;

2, izinto ezizodwa kunye nezinto ezinkulu ezibekwe emgceni, ezinje ngezixhobo zokufudumeza, iinguqu, i-IC, njl .;

3. Beka izixhobo ezincinane.

Umgama phakathi kwecandelo kunye nomda wePCB

Ukuba kunokwenzeka, onke amacandelo kufuneka abekwe ngaphakathi kwe-3mm ukusuka kumda webhodi ye-PCB okanye ubuncinci kunokubukhulu bebhodi ye-PCB. Kungenxa yokuba kwimveliso emininzi ye-plug-ins ye-assembly kunye ne-wave soldering, kufuneka inikezelwe kwi-groove yesikhokelo sokusetyenziswa. Kwangaxeshanye, ukwenzela ukuthintela iziphene komphetho okubangelwa processing imilo, ukuba kukho izinto ezininzi kakhulu kwibhodi PCB, Ukuba kufuneka ugqithe ngaphaya koluhlu lwe-3mm, unokongeza umda oncedisayo we-3mm kumda webhodi ye-PCB, kwaye uvule isakhelo esimilise i-V kumda oncedisayo, onokwaphulwa ngesandla ngexesha lokuvelisa.

Ukuzahlula phakathi koxinzelelo oluphezulu nolusezantsi

Kukho isekethe yevolthi ephezulu kunye nesekethe yevolthi ephantsi ngaxeshanye kwiibhodi ezininzi zePCB, izinto zesekethe ephezulu yombane kunye nenxalenye yevolthi esezantsi kufuneka yahlulwe kwaye ivuleke, kwaye umgama wokuzahlula unxulumene nokuma kwamandla ombane. Ngokwesiqhelo, ibhodi ye-PCB kufuneka ibe yi-2mm kude ne-voltage yokumelana kwi-2000kV, kwaye inani elingaphezulu koku kufuneka lonyuswe, umzekelo, ukuba uvavanyo lwamandla ombane yi-3000V, Umgama phakathi kwemigca yamandla ombane aphezulu naphantsi kufuneka ubengaphezulu kwe-3.5mm, kwiimeko ezininzi ukunqanda i-creepage, kodwa nakwibhodi ye-PCB phakathi kwendawo ephezulu nephantsi yombane.

Ibhodi yePCBling cabling

Ubume beekhondaktha eziprintiweyo kufuneka zibe mfutshane kangangoko, ngakumbi kwiisekethi ezihamba rhoqo; Ukujika kwentambo eprintiweyo kufuneka kujikelezwe, kwaye i-Angle elungileyo okanye i-Angle ebukhali iya kuchaphazela ukusebenza kombane kwimeko yesekethe ephezulu kunye nokuxinana kwe-wiring; Xa kufakwa iiphaneli ezimbini, iingcingo kumacala omabini kufuneka zibe zi-perpendicular, oblique, okanye zi-bent ukuthintela ukufana komnye nomnye ukunciphisa ukudibana kwe-parasitic. Iingcingo ezishicilelweyo ezisetyenzisiweyo njengegalelo kunye nemveliso yesekethe kufuneka zithintelwe ngokuhambelana komnye nomnye kangangoko ukuthintela ingxelo. Kungcono ukongeza iingcingo ezisekayo phakathi kwezi zingcingo.

Ububanzi wocingo oluprintiweyo

Ububanzi becingo kufuneka luhlangane neemfuno zokusebenza kombane kwaye kube lula kwimveliso. Ixabiso lazo elincinci lixhomekeke kubungakanani bangoku, kodwa ubuncinci akufuneki bube ngaphantsi kwe-0.2mm. Kuxinano oluphezulu, imigca echanekileyo eshicilelweyo, ububanzi bocingo kunye nokushiya izithuba kuyinto enqwenelekayo ngokubanzi yi-0.3mm; Ukunyuka kweqondo lobushushu lobubanzi becingo kufuneka kuthathelwe ingqalelo kwimeko yangoku ephezulu. Uvavanyo lwepaneli enye lubonisa ukuba xa ubukhulu befoyile yobhedu ingama-50μm, ububanzi bocingo yi-1 ~ 1.5mm kwaye okwangoku yi-2A, ukunyuka kweqondo lobushushu kuncinci kakhulu. Ke ngoko, ucingo olunobubanzi be-1 ~ 1.5mm lunokuhlangabezana neemfuno zoyilo ngaphandle kokubangela ukunyuka kweqondo lobushushu.

Iingcingo eziqhelekileyo zomhlaba zabaqhubi abaprintiweyo kufuneka zibengqindilili kangangoko kunokwenzeka, zisebenzisa imigca emikhulu kuno-2 ukuya ku-3mm ukuba kunokwenzeka, ngakumbi kwiisekethe ezinee-microprocessors. Ngenxa yokuba umgca wasekhaya ulunge kakhulu, ngenxa yotshintsho lokuhamba ngoku, utshintsho lomhlaba olunokubakho, ukungazinzi kwinqanaba lomqondiso wexesha, kuya kwenza ukonakala kokunyamezelana kwengxolo; Imigaqo ye-10-10 kunye ne-12-12 inokusetyenziswa xa kufakwa iingcingo phakathi kwe-DIP ezipakishwe izikhonkwane ze-IC, oko kukuthi, xa kudluliswa iingcingo ezimbini phakathi kwezikhonkwane, ububanzi bephedi bunokusetwa kwi-50mil, ububanzi bomgca kunye nokushiya umgca zii-10mil, xa lucingo olunye kuphela oludlulisiweyo phakathi kwezikhonkwane, ubukhulu bephedi bunokusetwa kwi-64mil, ububanzi bomgca kunye nokushiya umgca zii-12mil.

Ukuqelelaniswa kweengcingo eziprintiweyo

Isithuba phakathi kweengcingo ezikufutshane kufuneka sihlangabezane neemfuno zokhuseleko lombane, kwaye ukulungiselela ukusebenza kunye nemveliso, isithuba kufuneka sibanzi kangangoko kunokwenzeka. Ubuncinci bezithuba kufuneka ubuncinci zilungele ukuba umbane uzinze. Le volthi ngokubanzi ibandakanya ukusebenza kwamandla ombane, umbane owongeziweyo wokunyuka kwamandla kunye nephezulu yevolthi ebangelwa zezinye izizathu.

Ukuba iimeko zobugcisa zivumela inqanaba lentsalela yentsimbi phakathi kweentambo, isithuba siya kuncitshiswa. Umyili ke kuya kufuneka ayithathele ingqalelo le nto xa ejonga amandla ombane. Xa ukuxinana kweengcingo kungaphantsi, umsantsa womgca wesiginali unokunyuka ngokufanelekileyo, umgca womqondiso ngokungafani okukhulu kwinqanaba eliphezulu, nelisezantsi kufuneka libe lifutshane kangangoko kunokwenzeka kwaye landise isithuba.

Ukukhuselwa kunye nokucwangciswa kweengcingo eziprintiweyo

Ucingo lomhlaba woluntu lwentambo eprintiweyo luya kucwangciswa emaphethelweni ebhodi yesekethe eprintiweyo kangangoko kunokwenzeka. Ubuninzi befoyile yobhedu kufanele ukuba igcinwe njengocingo lomhlaba kwibhodi ye-PCB, ukuze isiphumo sokukhusela silunge ngakumbi kunocingo olude lomhlaba, iimpawu zomgca wokuhambisa kunye nomphumo wokukhusela ziya kuphuculwa, kwaye zidlale indima ekunciphiseni amandla asasaziweyo. Ucingo lomhlaba woluntu olushicilelweyo lukulungele ukwenza iluphu okanye inethiwekhi, kuba xa kukho imijikelezo emininzi edibeneyo kwibhodi enye, ngakumbi xa kukho izinto ezisebenzisa amandla amaninzi, ukusikelwa umda kwigrafu kuvelisa isiseko esinokubakho umahluko, ibangela ukuncitshiswa kokunyamezelana kwengxolo, xa kusenzeka iluphu, umahluko onokubakho wokunciphisa umhlaba uncitshisiwe.

Ukongeza, umhlaba kunye nomzobo wamandla kufuneka uhambelane nendlela yokuhamba kwedatha kangangoko kunokwenzeka, eyimfihlelo yokuphucula ingxolo; Ibhodi PCB Multilayer kungathatha maleko eziliqela njengoko umaleko uvikele, umbane umaleko umaleko, umaleko komhlaba kungathathwa njengoko umaleko uvikele, umaleko jikelele jikelele kwaye umaleko amandla ziyilelwe umaleko engaphakathi ibhodi PCB multilayer, umqondiso uphawu uyilo umaleko ngaphakathi kunye maleko engaphandle.