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Kutheni ibhodi yesekethe eprintiweyo idinga ulawulo lwe-impedance?Kumgca wesiginali yothumelo yesixhobo sombane, ukuxhathisa okufunyenweyo xa isiginali ye-frequency ephezulu okanye i-electromagnetic wave propagate ibizwa ngokuba yi-impedance.Kutheni le nto iibhodi zePCB kufuneka zingasebenzi ngexesha lenkqubo yokwenziwa komzi-mveliso webhodi yesekethe?Makhe sihlalutye kwezi zizathu zine zilandelayo: 1. Ibhodi yesekethe yePCB ye ...
- Kutheni uninzi lweebhodi zeesekethe ezinamanani amaninzi zingamaleko alinganayo?
Kukho iibhodi zeesekethe ezinecala elinye, elinamacala amabini kunye ne-multi-layer.Inani leebhodi ze-multi-layer alikhawulelwanga.Ngoku kukho ngaphezu kwe-100-layer PCBs.IiPCBs eziqhelekileyo ezinomaleko obuninzi zine umaleko kunye neebhodi ezintandathu.Ke kutheni abantu benombuzo othi "Kutheni iibhodi zePCB ezininzi zingamanani alinganayo? Xa sithetha ngokuthelekisekayo, iiPCB ezinamanani alinganayo zineePCB ezingaphaya kwamanani angaqhelekanga, ...
- Uyilo olunesiqingatha somngxuma weBhodi yeSekethe
Isiqingatha somngxuma owenziwe ngesinyithi sithetha ukuba emva komngxuma wokubhobhoza (i-drill, i-gong groove), emva koko i-2 igrunjiwe kwaye imile, kwaye ekugqibeleni isiqingatha somngxuma owenziwe ngesinyithi (groove) sigcinwa.Ukuze ulawule ukuveliswa kweebhodi zetsimbi ezinesiqingatha, abavelisi bebhodi yesekethe badla ngokuthatha amanyathelo athile ngenxa yeengxaki zenkqubo ekudibaneni kweemingxuma ezinesiqingatha ezinentsimbi kunye nemingxuma engaxutywanga.Intsimbi enesiqingatha yomngxuma...
- I-PCB UBUME UKUGQIBELA, IZINTO EZILUNGILEYO NOBUHLUNGU
Nabani na obandakanyekayo kushishino lwebhodi yesekethe eprintiweyo (PCB) bayaqonda ukuba iiPCBs zinemiphetho yobhedu kumphezulu wazo.Ukuba zishiywe zingakhuselekanga ngoko ubhedu luya ku-oxidize kwaye luwohloke, okwenza ibhodi yesekethe ingasebenzi.Ukugqitywa komphezulu kwenza ujongano olubalulekileyo phakathi kwecandelo kunye nePCB.Ukugqitywa kunemisebenzi emibini ebalulekileyo, ukukhusela ukujikeleza kobhedu okuveziweyo kunye ...
- I-A&Q yePCB (2)
9. Yintoni isisombululo?Impendulo: Kumgama we-1mm, isisombululo semigca okanye imigca yezithuba enokuthi yenziwe ngokumelana nefilimu eyomileyo inokubonakaliswa ngobungakanani obupheleleyo bemigca okanye izithuba.Umahluko phakathi kwefilimu eyomileyo kunye ne-resistance film thickness Ubukhulu befilimu ye-polyester bunxulumene.Ukuqina komgangatho wefilimu ochasayo, ukuncipha kwesisombululo.Xa ukukhanya...
- Izinto ezahlukeneyo zeBhodi yeSekethe
Ukutsha kwezinto, okukwaziwa ngokuba yi-flame retardancy, ukuzicima, ukumelana nomlilo, ukumelana nomlilo, ukumelana nomlilo, ukutsha kunye nokunye ukutsha, kukuvavanya amandla ezinto eziphathekayo ukuxhathisa ukutsha.Isampuli yezinto ezinokutsha zivutha ngumlilo ohlangabezana neemfuno, kwaye ilangatye liyasuswa emva kwexesha elichaziweyo.Inqanaba lokutsha li...
- Ibhodi yeCeramic PCB
Iibhodi zeesekethe zeCeramic ngokwenene zenziwe ngezinto zombane ze-ceramic kwaye zingenziwa kwiimilo ezahlukeneyo.Phakathi kwabo, ibhodi yesekethe ye-ceramic ineempawu ezibalaseleyo zokumelana nokushisa okuphezulu kunye nokufakelwa kombane ophezulu.Ineengenelo zokungaguquguquki kwe-dielectric ephantsi, ilahleko ye-dielectric ephantsi, i-thermal conductivity ephezulu, uzinzo oluhle lweekhemikhali, kunye nokwandiswa kwe-thermal efanayo ...
- Uyenza njani ipcb kwiphaneli?
1. Ifreyim yangaphandle (icala elibambekayo) lephaneli yeBhodi yeSekethe eShicileleyo kufuneka yamkele uyilo lwe-loop evaliweyo ukuqinisekisa ukuba ijigsaw yePCB ayisayi konakala emva kokulungiswa kwifixture;2. PCB panel ububanzi ≤260mm (SIEMENS umgca) okanye ≤300mm (FUJI line);ukuba ukukhutshwa okuzenzekelayo kuyadingeka, ububanzi bepaneli yePCB × ubude ≤125 mm×180 mm;3. Ubume bejigsaw yePCB kufuneka ibe kufutshane nesikwere kangangoko...
- Ukuthintela njani ukungqubana kwebhodi yePCB ngexesha lenkqubo yokuvelisa
I-SMT (iNdibano yeBhodi yeSekethe eShicileleyo, i-PCBA) ikwabizwa ngokuba yi-surface Mount technology.Ngexesha lenkqubo yokuvelisa, i-solder paste iyafudumala kwaye inyibilike kwindawo yokufudumala, ukwenzela ukuba iipadi ze-PCB zidibaniswe ngokuthembekileyo kunye nezixhobo zokunyuka komphezulu ngokusebenzisa i-solder paste alloy.Le nkqubo siyibiza ngokuba yireflow soldering.Uninzi lweebhodi zesekethe zithande ukugoba kunye nokujija ibhodi xa unde...
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