Ngoyilo lomngxunya we-HDI PCB
Kwindlela yokuyilwa kwe-PCB ephezulu, i-PCB ye-PCB ye-Mulb ihlala isetyenziswa, kwaye ngomngxunya yinto ebalulekileyo kuYilo lwePCIB yePCB. Imngxunya kwi-PCB iqokelelwe ngamacandelo amathathu: umngxunya, indawo ye-pid ye-pid ejikeleze umngxunya kunye nendawo yombane. Okulandelayo, siya kuyiqonda i-PCB ephezulu yePCB ngengxaki yomngxunya kunye neemfuno zoyilo.
Impembelelo yomngxunya kwi-HDI PCB
KwiBhodi ye-HDI PCB ye-Multilayer, i-Intercontect phakathi kwe-theather enye kunye nolunye ungqameko kufuneka liqhagamshelwe kwimingxunya. Xa i-frequency ingaphantsi kwe-1 GHZ, imingxunya inokudlala indima elungileyo ngokuhambelana, kwaye ukungabinakho kwenqanaba leparasic kunye ne-gesicy kungakhathazwa. Xa i-frequency ingaphezulu kwe-1 GHZ, isiphumo sempembelelo ye-parasitic yomngxunya ogqithisileyo kwingqibelelo yomqondiso ayinakutyeshelwa. Okwangoku, umngxunya ongaphezulu uveza indawo yokubeka eqingqiweyo kwiNdlela yokuHamba, eya kukhokelela kwimiqondiso, ukulibaziseka, umdla kunye nezinye iingxaki zengqibelelo.
Xa umqondiso udluliselwa kolunye ungqimba ngomngxunya, umaleko womqondiso welayini ikwasebenza njengendlela yokuyilwa komqondiso, kwaye ukubuya kwangoku kuya kuhamba phakathi kweengqungquthela eziphakathi kwe-canocimatives kunye nezinye iingxaki.
Uhlobo lwayo-umngxunya, ngokubanzi, ngokusebenzisa umngxunya wahlulwe waba ziindidi ezintathu: ngomngxunya, umngxunya ongaboniyo kunye nomngxunya ongcwatywe.
Umngxunya ongaboniyo: umngxunya obekwe kumphezulu webhodi yesekethe eprintiweyo, ukuba nobunzulu obuthile ukunxibelelana phakathi komgca ongaphezulu kunye nomgca wangaphakathi ophakathi. Ubunzulu bomngxunya uhlala ungadluli kwinqanaba elithile le-aperture.
Umngxunya oRutyumbe: umngxunya wonxibelelwano kwi-Inner Famer yeBhodi yeSekethe eprintiweyo engafaniyo kumphezulu weBhodi yeSiphaluka.
Ngomngxunya: Lo mngxunya uyadlula kuyo yonke iBhodi yeSekethe kwaye inokusetyenziselwa ukudityaniswa kwangaphakathi okanye njengendawo yokufumana indawo yokufumana amacandelo. Kuba umngxunya kwinkqubo kulula ukuyifezekisa, iindleko ziphantsi, ngoko ngokubanzi zisetyenziswe
Ngoyilo lomngxunya kwi-PCB ephezulu
Kwindlela yokuyila ye-PCB ephezulu, eyona ibonakala ilula nge-Hole ihlala izisa iziphumo ezibi kwisehlo sesekethe.
. Sebenzisa ubungakanani obukhulu ukunciphisa ukunyathela;
(2) Inqanaba lokukodwa indawo yodwa, engcono. Ukujonga ukuxinana ngomngxunya kwi-PCB, ngokubanzi i-D1 = D2 + 0.41;
(3) zama ukungatshintsheli ungqameko lomqondiso kwi-PCB, oko kukuthi, zama ukunciphisa umngxunya;
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(5) I-PIN ye-PIN yokubonelela kwaye umhlaba kufuneka usondele emngxunyeni. Okufutshane okufutshane phakathi komngxunya kunye nePIN, engcono, kuba baya kukhokelela ekunyukeni kwandise.
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Ukongeza, kubude be-hole yenye yezona zinto ziphambili ezichaphazela umngxunya wokuthintela.Com ephezulu kunye ne-Ezantsi kwaye ilingane nobubanzi be-PCB ilingana nobungqingqwa be-PCB. Ngenxa yenani elinyukayo lemigca yePCB, ubukhulu be-PCB ihlala ifikelela ngaphezulu kwe-5 mm.
Nangona kunjalo, kuYilo lwePCB ephezulu ye-PCB, ukwenzela ukunciphisa ingxaki ebangelwa ngumngxunya, ubude bobude bulawulwa ngaphakathi kwe-2.0mm.20mm kunye ne-Apertra Hole yi-0.20mm ~ 0.30mm.