A through hole igomba rinopfuura neparonda pa PCB layer, uye chinangwa chayo chega ndechekubatana kune imwe trace pane imwe layer. Iwo anowanzo kuwanikwa mu-multi-layer PCBs, iyo inoda kuti chidimbu chimwe nechimwe chibatanidzwe neimwe nzira kana imwe.

Pane matatu akasiyana vhezheni vias anogona kuiswa mune chero multilayer PCB:

Blind vias: Vanobatanidza chikamu chekunze chePCB kune chikamu chemukati chePCB, asi kwete mberi. Naizvozvo, kana tiine mana-layer PCB, maviri ekutanga akaturikidzana achave nemakomba akaboorwa kuburikidza nematehwe, asi kwete yechitatu kana yechina layer.

Vakavigwa vias: Vanobatanidza maviri kana anopfuura emukati akaturikidzana kune mumwe nemumwe. Zvakare, muPCB yedu ina-layer, yechipiri neyechitatu mitsara ichacherwa uye yakabatana, nepo kunze kwekunze (yekutanga neyechina layer) haizoratidze chero maburi uye inotaridzika sebhodhi Nzvimbo isina chinhu.

Vias: Sezvaungave wadudzira pari zvino, izvi zvinodhirowa verbatim kuburikidza nebhodhi rose kuti abatanidze yekutanga neyechina layer yekunze (kana mamwe masanganiswa anobatanidza mativi mana pamwechete).

Zvakafanana naMario’s green tube, iyo kuburikidza negomba inopfuura nePCB uye inobatanidza iyo yakawanda-layer trace wiring.

Kurudzira kukura kwekugadzira kwako kuburikidza nekunzwisisa nemazvo

Pabasa rose rekuponesa muchindakadzi, hazviratidzike sekukosha, kunze kwekuti machubhu aya akasvibira haaite seanobatsira, nekuti zvinogutsa kusvetukira mukati. Ukuwo, Vias inotamba. basa rakakosha mumultilayer PCBs.

Nguva zhinji, zviri nani zvakare muzera diki rino, uye isu tasara nebasa rekuchengetedza nzvimbo yakawanda sezvinobvira. Tiine vias, isu tiri dzidziso ikozvino tinokwanisa kunzvenga nzvimbo dzese dziri pamusoro pekubira nzira yekutevera (zvese zvikamu zvedu zvakagara ipapo) uye nzira zvese zvinodiwa muchikamu chechipiri, chechitatu kana kunyange chechina. Kune vagadziri vanotsvaga nzira dzekuchengetedza nzvimbo, izvi zvinogona kunge zviri godsend.

Kana kushandisa mapofu vias, kuvigwa vias kana kuburikidza-gomba vias pamusoro redunhu bhodhi rako, mumwe betsero yauchawana ndiko kuderedza utachiona capacitance pakati pezvitsiga, zvikasadaro kuchaita kukuvadza chakakomba magadzirirwo ako. Izvi zvakaderedzwa parasitic capacitance imhaka yekuvandudzwa kwekupfupisa maronda. Kunyange zvazvo zvisiri hazvo chikonzero chikuru, kana dhizaini yakarurama, iwe zvechokwadi uchabatsirwa nekuwedzera vias kune dhizaini.

Kudhira kushivirira kunofanirwa kuve kwakanyatso kujeka kuti ubudirire kushandisa vias mukugadzira.

Zvimwe zvinofungwa usati wapasa chikumbiro

Kunyangwe iwe uchigona kusvetuka kubva pachigaro chako wotsvaga nzvimbo yekusaina, tora bhiza rako, nekuti pane zvimwe zvinoipira pakuwedzera mafirita kudhizaini yako (nei paine zvinogara zvichiipira?!).

Vias uye multilayer mapuranga anotakurwa pamwechete. Paunenge uchiita chero mashandiro pane akawanda edunhu mabhodhi, mutengo zvinhu zvinofanirwa kutariswa. Izvi zvinosanganisira kuchera nemakomba munzvimbo imwechete, kwete buri rimwe chete, asi maviri, matatu, kana kunyange mana mapuranga. Kana paine kunyange kushivirira kudiki kukanganisa mukuchera uye kurongedza, bhodhi redunhu rinogona kunge riri marara.

Kuti vaderedze mamiriro ezvinhu aya, vagadziri vanofanira kuderedza michina yavo uye kushivirira kusvika pachidimbu chemirimita, izvo zvichawedzera mutengo wekugadzira uye kugadzira. Senguva dzose, iva nechokwadi chekubata mugadziri wako pachine nguva sezvinobvira kuti uwane painogumira uye kugona kwayo usati wafamba nepaburi retsuro (kana yegirini chubhu, chero yaunoda).