A through hole ndi dzenje lomwe limadutsa pa trace pa PCB wosanjikiza, ndipo cholinga chake chokha ndikulumikizana ndi mzere wina pagawo lina. Nthawi zambiri amapezeka mu ma PCB amitundu yambiri, omwe amafunikira kuti gawo lililonse lilumikizidwe mwanjira ina.

Pali mitundu itatu yosiyanasiyana ya vias yomwe imatha kuphatikizidwa mu PCB yamitundu yambiri:

Akhungu vias: Iwo kulumikiza wosanjikiza akunja kwa PCB kwa wosanjikiza wamkati wa PCB, koma palibenso. Chifukwa chake, ngati tili ndi PCB yamagulu anayi, magawo awiri oyamba adzakhala ndi mabowo obowoleredwa, koma osati gawo lachitatu kapena lachinayi.

Anakwiriridwa vias: Iwo kulumikiza zigawo ziwiri kapena kuposa mkati wina ndi mzake. Apanso, mu PCB yathu yamagulu anayi, yachiwiri ndi yachitatu idzabowoleredwa ndikugwirizanitsa, pamene zigawo zakunja (zoyamba ndi zinayi) sizidzawonetsa mabowo ndikuwoneka ngati bolodi Malo opanda kanthu.

Vias: Monga momwe mungadziwire pano, izi zimabowoleredwa liwu ndi liwu kudzera pa bolodi lonse kuti zilumikize zigawo zoyamba ndi zinayi za gawo lakunja (kapena zosakaniza zina zomwe zimalumikiza zigawo zinayi pamodzi).

Zofanana ndi chubu chobiriwira cha Mario, dzenjelo limadutsa pa PCB ndikulumikiza mawaya amitundu yambiri.

Limbikitsani kukula kwa mapangidwe anu pomvetsetsa bwino

Pantchito yonse yopulumutsa mwana wamfumu, sizikuwoneka ngati zofunika, kupatula kuti machubu obiriwira awa samawoneka ngati apindulitsa, chifukwa ndi okhutiritsa kwambiri kulumphira. Komano, Vias amasewera. gawo lofunikira mu ma PCB ambiri.

Nthawi zambiri, zimakhala bwinonso m’zaka zazing’onozi, ndipo tatsala ndi ntchito yosunga malo ambiri momwe tingathere. Ndi vias, ndife theoretically tsopano okhoza kuzilambalala mipata onse pamwamba wosanjikiza kuba trace njira (zigawo zathu zonse atakhala pamenepo) ndi njira zonse zofunika mu wachiwiri, wachitatu kapena ngakhale wachinayi wosanjikiza. Kwa opanga omwe akufunafuna njira zopulumutsira malo, izi zikhoza kukhala godsend.

Pamene kukhazikitsa vias akhungu, kukwiriridwa vias kapena kudzera-dzenje vias pa bolodi dera lanu, phindu lina mudzapeza ndi kuchepetsa capacitance parasitic pakati pa kuda, mwinamwake izo kuwononga kwambiri kapangidwe wanu. Izi kuchepetsedwa parasitic capacitance ndi chifukwa kusintha kufupikitsa kuda. Ngakhale kuti si chifukwa chachikulu, ngati mapangidwe ndi olondola, inu ndithudi kupindula powonjezera vias kuti kamangidwe.

Kubowola kulolerana kuyenera kukhala yolondola kwambiri kuti akwaniritse bwino kudzera pakupanga.

Mfundo zina musanapereke ntchito

Ngakhale mutha kudumpha pampando wanu ndikuyang’ana malo olowera, gwirani kavalo wanu, chifukwa pali zovuta zina pakuwonjezera zosefera pamapangidwe anu (chifukwa chiyani pamakhala zovuta?!).

Ma Vias ndi ma multilayer board amanyamulidwa palimodzi. Mukamagwira ntchito iliyonse pama board ozungulira angapo, mtengo wake uyenera kuganiziridwa. Izi zikuphatikizapo kuboola mabowo mofanana ndendende, osati dzenje limodzi lokha, koma matabwa awiri, atatu, ngakhale anayi. Ngati pali vuto lololera pang’ono pakubowola ndi kusungitsa, bolodi laderali lingakhalenso zinyalala.

Kuti athetse vutoli, opanga ayenera kuchepetsa makina awo ndi kulolerana kwa kachigawo kakang’ono ka millimeter, zomwe zidzawonjezera mtengo wa kupanga ndi kusonkhana. Monga nthawi zonse, onetsetsani kuti mwalumikizana ndi wopanga wanu pasadakhale kuti mupeze zofooka ndi kuthekera kwake musanadutse dzenje la kalulu (kapena chubu chobiriwira, chilichonse chomwe mungafune).