Ngenxa yezizathu ezininzi, zininzi iintlobo ezahlukeneyo zeprojekthi yokwenza i-PCB efuna iintsimbi ezithile zobhedu. Sifumana imibuzo kubathengi abangaqhelananga nomqondo wobunzima bobhedu amaxesha ngamaxesha, ke eli nqaku linenjongo yokusombulula ezi ngxaki. Ukongeza, oku kulandelayo kubandakanya ulwazi malunga nefuthe lobunzima beqela le-PCB, kwaye sinethemba lokuba olu lwazi luya kuba luncedo nakubathengi abasele beqhelene nomxholo. Ukuqonda okunzulu kwenkqubo yethu kunokukwenza ukuba ukwazi ukucwangcisa ishedyuli yokwenziwa kwemveliso kunye neendleko zonke.
Ungacinga ngobunzima bobhedu njengokuqina okanye ukuphakama komkhondo wobhedu, oluyinto eqhelekileyo engumba wedatha yefayile ye-gober ayiqwalaseli. Iyunithi yemilinganiselo yi-ouneces kwi-Squere nganye (oz / ft2), apho i-1.0 ye-Oz iguqulwe ibe yinto eyi-140 mils (35 μm).
I-PCBS ye-PCBS enkulu ihlala isetyenziswa kwizixhobo ze-elektroniki okanye nasiphi na isixhobo esinokuthi sihlupheke kwiindawo ezinobunzima. Ukuhamba okukhulu kunokubonelela ngokuqina okukhulu, kwaye unokwenza ukuba umkhondo ukuqhubela phambili okwangoku ngaphandle kokunyusa ubude okanye ububanzi bomkhondo wenqanaba elisebenzayo. Kwelinye icala le-equation, imilinganiselo yobhedu ilula ngamanye amaxesha icacisiwe ukufezekisa umkhondo othile ngaphandle kwemfuneko yobude obuncinci bohlobo okanye ububanzi. Ke ngoko, xa ubala umkhondo, "Ubunzima bobhedu" yintsimi efunekayo.
Elona xabiso lixhaphakileyo lobhedu liyi-1.0 ye-ounce. Gqibezela, ulungele uninzi lweeprojekthi. Kweli nqaku, kubhekisa ekunqumleni ubunzima bokuqala kwixabiso eliphezulu ngexesha lenkqubo yokwenza i-PCB. Xa ucacisa ikowuteshini ye-Couper ye-Couper kwiQela lethu lentengiso, nceda ubonise ixabiso lokugqibela (elidlelweyo) lobunzima obufunekayo.
I-PCBS ye-PCB ithathelwa ingqalelo ukuba ibe yi-PCBS kunye ne-ORDRE ye-ORDRERNERRY PROPER isusela kwi-3 oz / ft2 ukuya kwi-10 oz / ft2. Ubunzima bobhedu lwePCB yePCB ye-Worper ende evelise ubusuka kwii-ounces ezi-4 ngonyawo ngaphaya kweenyawo ezingama-20 ngonyawo ngalunye. Isisindo esiphuculweyo sobhedu, sidibene ne-face the spresing kunye nendawo efanelekileyo kwimngxunya, inokuvula iBhodi yeSiphako esibuthathaka kwiqonga eliqinileyo nelinokuthenjwa. Abaqhubi beqela lobhedu liya kukhulisa kakhulu ubukhulu be-PCB iphela. Ubungqingqwa bobhedu kufuneka buhlale luqwalaselwa ngexesha loyilo lwesekethe. Umthamo wokuphefumla okhoyo umiselwa bububanzi nobubanzi becala elinzima.
Ixabiso eliphezulu lobhedu aliyi kunyusa isikhundla ngokwayo, kodwa sibangela ukuba ubunzima bongezelelweyo kunye nexesha elifunekayo labasebenzi, ubunjineli benkqubo, kunye nokuqinisekiswa komgangatho, okukhokelela ekunyukeni kwexesha. Okokuqala, la manyathelo ongezelelweyo kufuneka athathwe, kuba ubhedu olongezelelekileyo kwi-lamote lufuna ixesha lokufumana ixesha lokufumana kwaye kufuneka lihambelane nezikhokelo ze-DFM. The copper weight of the circuit board also affects its thermal performance, causing the circuit board to absorb heat faster during the reflow soldering stage of PCB assembly.
Nangona kungekho ngcaciso iqhelekileyo yobhedu olunzima, lwamkelwa ngokubanzi ukuba ukuba ii-oyile ezi-3 (oz) okanye ngaphezulu kobhedu zisetyenziswa kumaleko wesekethe oprintiweyo, ibizwa ngokuba yi-PCB yesekethe eshicilelweyo. Nasiphi na isekethe yobhedu ngaphezulu kwe-4 yee-ounces kwinyawo nganye (i-FT2) ikwahlelwa njenge-PCB yobhedu. Ubhedu olugqithisileyo lithetha ama-20 ukuya kwangama-200 eenyawo ngonyawo ngalunye.
Esona sibonelelo siphambili kwiibhodi zesekethe ezinzima kukukwazi kwabo ukuvezwa rhoqo kwi-subres eninzi, amaqondo obushushu aphezulu kunye nemijikelezo ye-thermal aphindaphindiweyo, enokutshabalalisa iibhodi zesekethe eziqhelekileyo. Iplate yobhedu inomthamo ophembelela, owenza ukuba ihambelane nezicelo phantsi kweemeko ezinzima, ezinjengokhuselo kunye neemveliso zecandelo le-aerospace. Ezinye izibonelelo zeebhodi zesekethe ezinzima zophango zibandakanya:
Ngenxa yemilinganiselo yobhedu emininzi kumlinganiso wesekethe omnye, ubungakanani bemveliso ye-compact
Ubhedu olunzima ngokusebenzisa imingxunya edlulayo okwangoku nge-PCB kwaye uncede ukutshintshela ubushushu kwi-SUFF SART
I-Airborne Sunner Serving Sperner Translamer
Iibhodi zesekethe ezishicilelweyo eziprintiweyo zisetyenziselwe iinjongo ezininzi, ezinje ngotolo lweCardar, ukusasazwa kobushushu, ukusasazwa kwamandla ePrist, njl njl. Iibhodi zesekethe ezishicilelweyo eziprintiweyo zisetyenziselwa:
Ukunikezwa Amandla
Ukuhanjiswa kombane
Izixhobo ze-welding
Umzi mveliso wemoto
Abavelisi bepaneli yelanga, njl.
Ngokweemfuno zoyilo, iindleko zemveliso zePCB ye-SPORD enkulu iphezulu kune-PCB eqhelekileyo. Ke ngoko, eyona nto inzima kakhulu uyilo, iphakame indleko zokuvelisa i-PCBS enzima.