The PCB yaqanjwa ngu-Austrian Paul Eisler, owaqala ukuzisa iibhodi zesekethe eziprintiweyo koonomathotholo ngo-1936. Ngo-1943, iTekhnoloji yamkelwa ukuba isetyenziselwe ezomkhosi e-United States, kwaye ngo-1948, ukwenziwa kwayo kwamkelwa ngokusemthethweni ukuba kusetyenziselwe urhwebo e-United States. Ukusukela phakathi kwiminyaka yoo-1950, iibhodi zesekethe eziprintiweyo bezisetyenziswa kakhulu.

I-PCB ikuyo yonke indawo, isetyenziswa ngokubanzi kunxibelelwano, kwezonyango, kulawulo lweemizi-mveliso, kwezomkhosi, kwezomkhosi, kwindiza, kubuchwephesha bobuchwephesha, kubathengi nakwamanye amashishini. Kuzo zonke iintlobo zeemveliso ze-elektroniki, i-PCB, njengeyona nto iphambili kwizixhobo zemveliso, idlala indima ebalulekileyo.

Kutheni le nto iPCBS iluhlaza?

Ukuba ulumkile, unokufumanisa ukuba uninzi lweePCBS ziluhlaza (mnyama, luhlaza okwesibhakabhaka, bomvu kunye neminye imibala mncinci), kutheni le nto? Ngokwenyani, ibhodi yesekethe ngokwayo imdaka. Umbala oluhlaza esiwubonayo yimask yokuthengisa. Umaleko wokumelana neSolder awunyanzelekanga ukuba ube luhlaza, kukho obomvu, omthubi, oluhlaza okwesibhakabhaka, omfusa, omnyama njalo njalo, kodwa oluhlaza lolona luqhelekileyo.

Malunga nokuba kutheni usebenzisa umaleko oluhlaza we-solder, kukho ikakhulu oku kulandelayo:

I-1) Oluhlaza alukhuthazi kangako emehlweni. Ukususela ebuntwaneni, utitshala usixelele ukuba okuluhlaza kulungele amehlo, khusela amehlo kwaye ulwe nokudinwa. Imveliso kunye nolondolozo lwabasebenzi akukho lula ukudinwa kwamehlo xa ujonge ibhodi ye-PCB ixesha elide, eya kuthi ibangele ukonakala kwamehlo okuncinci.

2) Ixabiso eliphantsi. Kuba kwinkqubo yemveliso, luhlaza yeyona nto iphambili, ixabiso lokuthenga ipeyinti eluhlaza yendalo iya kuba nkulu, iindleko zokuthenga ipeyinti eluhlaza ziya kuba sezantsi kuneminye imibala. Kwangelo xesha xa imveliso yobuninzi isebenzisa umbala ofanayo wepeyinti inokunciphisa iindleko zokutshintsha kwentambo.

3) Xa ibhodi ifakwe nge welding kwi-SMT, kufuneka ihambe ngetini kunye neposi kunye nokuqinisekiswa kokugqibela kwe-AOI. Ezi nkqubo kufuneka zilinganiswe ngokuma okubonakalayo, kwaye isiphumo sokuchongwa kwesixhobo singcono ukuba kukho imvelaphi eluhlaza.

Yenziwe njani i-PCB?

Ukwenza i-PCB, uyilo lwe-PCB kufuneka luyilwe kuqala. Uyilo lwe-PCB kufuneka luxhomekeke kwizixhobo zesoftware yoyilo lwe-EDA kunye namaqonga, anjengeCadence Allegro, iMentor EE, iiPads zeMentor, uMyili weAltium, iProtel, njl. Okwangoku, ngenxa yokuqhubekeka ngokuncinci, ukuchaneka kunye nesantya esiphezulu seemveliso ze-elektroniki, uyilo lwe-PCB aludingi kuphela ukugqiba unxibelelwano lwesekethe yamacandelo ahlukeneyo, kodwa kufuneka luqwalasele imiceli mngeni eyahlukeneyo eziswe sisantya esiphezulu kunye noxinano oluphezulu.

Inkqubo esisiseko yoyilo lwe-PCB imi ngolu hlobo lulandelayo: ulungiselelo lokuqala

Yintoni imigca emhlophe kwi-PCB?

Sihlala sibona imigca emhlophe kwi-PCBS. Wakhe wazibuza ukuba zintoni? Le migca imhlophe isetyenziselwa ukumakisha izinto kunye nokuprinta ulwazi olubalulekileyo lwe-PCB ebhodini, ebizwa ngokuba “yiprinta yokushicilela.” Ingaprintwa kwiscreen ebhodini okanye iprintwe kwi-PCB isebenzisa iprinta ye-inkjet.

Athini amacandelo kwi-PCB?

Maninzi amacandelo kwi-PCB, ngalinye linomsebenzi owahlukileyo, othi xa uwonke wenze umsebenzi opheleleyo we-PCB. Izinto ezikwi-PCB zibandakanya i-resistors, i-potentiometers, i-capacitors, i-inductors, i-relays, iibhetri, iifyuzi, abaguquli, ii-diode, i-transistors, i-LED, iitshintshi, njl.

Ngaba zikhona iingcingo kwiPCB?

Kubaqalayo, ii-PCBS azizisebenzisi iingcingo ukudibanisa. Oku kunomdla kuba uninzi lwezixhobo zombane kunye netekhnoloji ifuna iingcingo ukudibanisa. Akukho zingcingo kwi-PCB, kodwa ii-wiring zobhedu zisetyenziselwa ukuhambisa ngoku isixhobo kunye nokudibanisa zonke izinto.