PCB uhlobo lokhuseleko

Ngokwemigaqo elula, ukugcinwa kwePCB kunokuchazwa ngolu hlobo lulandelayo:

Isakhelo se-wiring se-PCB senziwe ngumyili wezinto zangaphandle kwiindawo ezingamiselwanga kwibhodi yesekethe, apho umkhondo wobhedu okanye ezinye izinto zebhodi yesekethe ziya kungena okanye ziwele. Indawo inganakho okanye iqulathe ubhedu kwaye inokuba yeyayo nayiphi na imilo.

Kwiimeko ezininzi, imimandla yokugcina isetyenziselwa ukugcina iindawo ezithile zebhodi zikude ngokwaneleyo kwamanye amacandelo ukukhusela okanye ukunciphisa i-EMI. Nangona kunjalo, zikwasetyenziselwa ukubonelela ngezithuba zokukhuphela umkhondo we-fan-out of surface-mounted components. Imizekelo yiprosesa okanye ii-FPGas, ezihlala zihlola i-PCB kunye neebhodi zophuhliso. Ezinye iintlobo zokubhuka eziqhelekileyo zidweliswe apha ngezantsi.

Uhlobo lokhuseleko PCB

I-eriyali

Ngokufanelekileyo, olona hlobo luqhelekileyo lokubhukisha kukugcina indawo yocingo lobhedu ejikeleze ibhodi okanye i-eriyali edityanisiweyo ukukhusela i-EMI ekuchaphazeleni ukuthembeka kwesiginali esithunyelwayo okanye esifunyenweyo. Ukugcinwa kusenokuqulatha iingcingo ze-eriyali kwezinye iisekethi.

L iinxalenye

Kuqhelekile ukwenza indawo yokuphuma kwe-fan ejikeleze izinto (ngakumbi ii-radiator ze-EM). Kuyinyani kwii-microprocessors, i-FPgas, i-AFE kunye nolunye uhlobo oluphakathi ukuya kwinqanaba eliphakamileyo lokubala iipini (ezisetyenziswa rhoqo kwiiphakheji zepatch).

L Indawo yokucacisa emaphethelweni

Ukucoca i-Edge kubaluleke kakhulu kwimveliso. Ngokukodwa, iiphaneli zahlulwe zaziibhodi ezizodwa ngexesha lendibano ye-PCB. Ukwenza oku, ukucoca ngokwaneleyo kufuneka kushiyelwe iingcingo okanye amanqaku.

L ukulandelela

Ngamanye amaxesha kunokuba luncedo ekuchazeni iindawo zokubhukisha ezijikeleze umkhondo. Ngamanye amaxesha isetyenziselwa imigca yokuhambisa ezisisiseko se-coplanar ukufezekisa i-impedance elawulwayo.

L ukubhola

Iipleyiti ezininzi zifakwe ngezikhonkwane okanye iibholiti. Kule meko, kuyanceda ukuchaza izithuba ezijikeleze imingxunya. Isithuba esaneleyo sinokuchaphazela ukuhlangana, ukuphazamisa ukusebenza kwesekethe, kwaye kunokudala nomonakalo webhodi yesekethe. Kwimingxunya evulekileyo, uhlala ulandela nje imigaqo ye-CM’s DFM.

L isinxibelelanisi

Depending on the connector type in terms of layout and placement, your board design may need to consider two considerations: the footprint of the connector board and the paneling. Ngokwesiqhelo, ubeko lwesinxibelelanisi okanye iplagi ayibandakanyi sithuba socingo lwangaphandle okanye uqhagamshelo lwentambo. Kule meko, ukugcina ilizwe kubalulekile ukuqinisekisa ukuba isekethe yenzeka ngokwenyani njengoko kulindelwe.

L tshintsha

Olunye usebenziso olulungileyo lokugcina kukubonelela ngendawo yokutsiba okanye ukuhambisa utshintsho oluthe tyaba.

Uluhlu olungentla lunika iintlobo eziqhelekileyo kunye nokusetyenziselwa ukugcinwa kwePCB. Kwezinye iimeko, nangona kunjalo, unokufuna ukuchaza iindawo ezigciniweyo. Umzekelo, ukuba uyilo lwakho lusebenzisa izinto; Umzekelo, kwii-amplifiers ezisebenzayo, apho kukho ukungangqinelani okukhulu kwe-impedance phakathi kwegalelo kunye nemveliso, isekethe inokuba semngciphekweni wokuvuza ngoku, ngoko ke kunokuba yimfuneko ukubonelela ngolu hlobo lulandelayo lokhuselo: I-PCB yokhuseleko. Nangona ingahlelwa njengendawo ekhuselweyo, iringi yokhuselo isebenza njengesithintelo somzimba kwizinto zangaphandle kunye nokufaka iintambo, kwaye kuthintela ukungaphakathi kwangaphakathi ekuphumeni kuloo ndawo. Ngoku sikulungele ukujonga indlela yokuqinisekisa ukuba ukubhukisha kuyawenza umsebenzi wawo.

Hlala kude neengxaki

Amanyathelo okugcina i-PCB asebenza kuphela ukuba bayazifezekisa iinjongo zabo. Oku kukubonelela ngokwahlukeneyo kwiindawo ezithile zebhodi kuyo nayiphi na into yangaphandle. Ukufezekisa oku, kufuneka ulandele ezi zikhokelo ze-Keepout ezilungileyo.

Inkqubo yokugcinwa kwePCB

L Chonga ukuba kutheni kufuneka kugcinwe ntoni

L Chonga ukuba kufuneka indawo engakanani ngokokusetyenziswa kwayo

L Sebenzisa iziphawuli zesikrini zokuchonga iindawo zokubhukisha

L Qiniseka ukuba uxwebhu lwakho loyilo luqulathe ulwazi lokugcina

Ukubanjwa kwe-PCB yinto exabisekileyo kuyilo lwebhodi yakho, kuqinisekiswa ukuba isebenza njengoko kulindelwe. Ngokulandela ezi zikhokelo kwaye uzisebenzise ngokupheleleyo, unokuthintela ukungaboni ngasonye kunye nokuphucula ukuthembeka kwePCBA emva kokuthunyelwa.