Ke life tse foufetseng le tse patiloeng?
Blind vias: Ha lehlakoreng le leng feela la vias ke lera le ka ntle la PCB, ba bitsoa vias foufetseng.
E patoa ka vias: Ha mahlakoreng ka bobeli a vias patoa ka lera le ka hare la PCB, ba bitsoa vias patoa.
Litsela tse foufetseng le tse patiloeng li bōptjoa joang?
Mekhoa e meraro e latelang e ka etsa lifofu le ho patoa ka vias:
Ho cheka ka mechine ka botebo bo tsitsitseng
Sequential lamination le ho phunya
Leha e le efe lera lamination le ho phunya
Sefofu ke eng ka mokhoa oa ho etsa thepa?
Taba ea pele, re bua ka laser drill blind ka masoba. PCB e foufetse ka mokhoa oa ho etsa lintho ka tsela e latelang:
1) qeta likarolo tsohle tse ka hare pele;
2) laminate likarolo tse peli tsa prepreg le lakane ea koporo holim'a likarolo tse ka hare tse seng li felile tsa boto ea PCB;
3) cheka botebo bo laoloang ka bofofu ka PCB ka laser.
Ka kopo hlokomela ho nepahala ho bohlokoa haholo bakeng sa ba sa boneng ka pad.
Ha e le ka li-drill blind ka masoba, re nka li-PCB tse 4 tse nang le li-vias tse foufetseng ka har'a moalo oa 1 ho isa ho 2, mohlala, ts'ebetso ka tsela e latelang:
1) hlahisa makhapetla 1 le 2 e le PCB e tloaelehileng ea 2-layer, kahoo ho tla ba le li-drill holim'a lihlopha tsa 1 ho isa ho 2;
2) laminate liboto tse peli tsa mantlha hammoho e le hore re ka fumana PCB ea 4-layer, 'me re phunya plating ka masoba;
3) ha PCB e felile, o fumana PTH ho tloha ho 1 ho isa ho 4 le li-vias tse foufetseng ho tloha ho 1 ho isa ho 2.
Melemo ea ho sebelisa li-vias tse sa boneng le tse patiloeng ke life?
Melemo ea ho sebelisa sefofu le ho patoa e boletsoe ka tlase:
Ho fokotsa boholo le boima ba PCB
Ho fokotsa palo ea lihlopha
Ho fokotsa litšenyehelo tsa tlhahiso ea mefuta e 'maloa ea PCB ho tloha ho kopanya mesebetsi e mengata
Ho ntlafatsa ho lumellana ha motlakase
Ho eketsa litšobotsi tsa lihlahisoa tsa elektroniki
Ho etsa hore moralo o sebetse habonolo le kapele
Liphephetso tsa ho sebelisa lisebelisoa tse foufetseng le tse patiloeng ke life?
The miniaturization ea diameters ea li-vias tse foufetseng le tse patiloeng li beha litlhoko tse phahameng ho tlhahiso ea PCB.
Ho hlokahala lienjineri tse nang le boiphihlelo haholo ho rala lifofu le ho patoa ka li-PCB.
Ho thata haholo ho bokella lifofu le ho patoa ka li-PCB kaha li lula li e-na le li-pads tse nyane, joalo ka li-pads tsa BGA.
Ke eng e tloaelehileng ea blind via aspect ratio?
Ka boto ea laser drill blind vias board, sefofu se tloaelehileng ka karolo ea 1: 1.
Ho patoa ka eng?
Li-vias tse patiloeng ho PCB li na le masoba pakeng tsa likarolo tse ka hare. Re nka 6 lera foufetseng / patoa ka boto oa potoloho mohlala: vias foufetseng ka ka likoti ho tloha lera 2-3, 2-4, 2-5, 3-4, 3-5 le 4-5.
E patoa ka vs blind ka
Ho foufala ka tsela le ho patoa ka li-HDI PCBs, li lula li le teng ka har'a liboto tsa potoloho tse hatisitsoeng tsa theknoloji e phahameng ka nako e le 'ngoe. Empa ke mefuta e fapaneng ka ho felletseng ea li-vias.