Ububanzi bomgca kunye neenkcukacha zesithuba kwiiPCB ezinomaleko-2

Kule posi yebhlog, siza kuxoxa ngezinto ezisisiseko ekufuneka ziqwalaselwe xa ukhetha ububanzi bomgca kunye neenkcukacha zendawo kwii-PCB ezi-2.

Xa kuyilwa kunye nokuvelisa iibhodi zesekethe eziprintiweyo (PCBs), enye yeengcamango eziphambili kukumisela ububanzi bomgca ofanelekileyo kunye neenkcukacha zezithuba. Ezi nkcukacha zinempembelelo enkulu ekusebenzeni kwePCB, ukuthembeka, kunye nokusebenza.

1. Qonda iziseko zobubanzi bomgca kunye nesithuba:

Ngaphambi kokuba singene kwiinkcukacha, kubalulekile ukuqonda ngokucacileyo ukuba ububanzi bomgca kunye nezithuba zithetha ntoni. Ububanzi bomgca bubhekisa kububanzi okanye ubungqingqwa bemikhondo yobhedu okanye iikhondaktha kwi-PCB. Kwaye isithuba sibhekisa kumgama phakathi kwale mikhondo. Le milinganiselo idla ngokuchazwa kwiimilimitha okanye iimilimitha.

2. Qwalasela iimpawu zombane:

Into yokuqala ekufuneka iqwalaselwe xa ukhetha ububanzi bomgca kunye neenkcukacha zesithuba ziimpawu zombane zePCB. Ububanzi bomkhondo buchaphazela amandla okuphatha ngoku wesekethe kunye ne-impedance. Imikhondo etyebileyo inokuphatha imithwalo yangoku ephezulu ngaphandle kokubangela ilahleko exhathisayo. Ukongeza, isithuba phakathi komkhondo uchaphazela amandla e-crosstalk kunye nokuphazamiseka kwe-electromagnetic (EMI) phakathi komkhondo okufutshane okanye izinto. Qwalasela inqanaba lamandla ombane wesekethe, amaza omqondiso, kunye novakalelo lwengxolo ukumisela iinkcukacha ezifanelekileyo zombane.

3. Iingqwalasela zokulahla ubushushu:

Enye inkalo ebalulekileyo ekufuneka iqwalaselwe kulawulo lwe-thermal. Ububanzi bomgca kunye nesithuba somgca sidlala indima ekutshitshiseni ubushushu obufanelekileyo. Umkhondo obanzi uququzelela ukuhanjiswa kobushushu ngokufanelekileyo, ukunciphisa amathuba okuba ngamacandelo ebhodini ashushu. Ukuba iPCB yakho idinga ukumelana nezicelo zamandla aphezulu okanye isebenze kwindawo yobushushu obuphezulu, umkhondo obanzi kunye nezithuba ezinkulu zinokufuneka.

4. Umthamo wokuvelisa:

Xa ukhetha ububanzi bomgca kunye nesithuba, amandla okwenza umvelisi wePCB kufuneka aqwalaselwe. Ngenxa yezixhobo kunye nonyino lwenkqubo, ayingabo bonke abavelisi abanokufikelela kububanzi obumxinwa kakhulu kunye nezithuba ezixineneyo. Kubalulekile ukubonisana nomenzi wakho ukuze uqinisekise ukuba iinkcukacha ezikhethiweyo zifezekisiwe ngaphakathi kwamandla abo. Ukungaphumeleli ukwenza oko kunokubangela ukulibaziseka kwemveliso, ukunyuka kweendleko, okanye iziphene zePCB.

5. Umqondiso wemfezeko:

Ingqibelelo yomqondiso ibalulekile kuyilo lwePCB. Ububanzi bomgca kunye neenkcukacha zesithuba zinokuchaphazela kakhulu ingqibelelo yesignali yeesekethe zedijithali ezikhawulezayo. Umzekelo, kuyilo lwe-frequency ephezulu, ububanzi bemigca emincinci kunye nesithuba esingqongqo kunokufuneka ukunciphisa ukulahleka komqondiso, ukungahambelani kwe-impedance, kunye nokubonakaliswa. Ukulinganisa ingqibelelo yomqondiso kunye nokuhlalutya kunokunceda ukucacisa iinkcukacha ezifanelekileyo zokugcina ukusebenza kakuhle.

6. Ubungakanani bePCB kunye nokuxinana:

Ubungakanani bePCB kunye noxinaniso nazo zidlala indima ebalulekileyo ekumiseleni ububanzi bomgca kunye neenkcukacha zesithuba. Iibhodi ezincinci ezinesithuba esincinci zinokufuna umkhondo omncinci kunye nezithuba ezixineneyo ukulungiselela lonke uqhagamshelo oluyimfuneko. Kwelinye icala, iibhodi ezinkulu ezinemithintelo yendawo encinci zinokuvumela umkhondo obanzi kunye nezithuba ezinkulu. Kubalulekile ukulinganisa phakathi kokuphumeza umsebenzi ofunekayo kunye nokuqinisekisa ukwenziwa kwezinto ngaphakathi kwendawo yebhodi ekhoyo.

7. Imigangatho yoshishino kunye nezikhokelo zoyilo:

Ekugqibeleni, kuyacetyiswa ukuba ubhekisele kwimigangatho yoshishino kunye nezikhokelo zoyilo xa ukhetha ububanzi bomgca kunye neenkcukacha zesithuba. Imibutho efana ne-IPC (i-Electronic Industries Council) ibonelela ngemigangatho ethile kunye nezikhokelo ezinokusebenza njengezingqinisiso ezibalulekileyo. La maxwebhu anikezela ngolwazi oluneenkcukacha malunga nobubanzi bomgca obufanelekileyo kunye nesithuba sezicelo ezahlukeneyo kunye nobuchwepheshe.

Isishwankathelo

Ukukhetha ububanzi bomgca obuchanekileyo kunye neenkcukacha zesithuba kwi-PCB ene-2-layer linyathelo elibalulekileyo kwinkqubo yoyilo. Ukuqinisekisa ukusebenza kakuhle, ukuthembeka, kunye nokuveliswa, izinto ezifana neempawu zombane, ukuqwalaselwa kwe-thermal, amandla okuvelisa, ukunyaniseka komqondiso, imilinganiselo ye-PCB, kunye nemigangatho yoshishino kufuneka ithathelwe ingqalelo. Ngokuphonononga ngononophelo le miba kunye nokusebenza ngokusondeleyo nomvelisi wePCB, ungayila iPCB echanekileyo, esebenzayo, kwaye ehlangabezana neemfuno zakho.