Ishicilelwe ibhodi yesekethe (I-PCB) yinkxaso yamacandelo esekethe kunye neemveliso kwiimveliso zombane. Inika unxibelelwano lombane phakathi kwezinto zesekethe kunye nezixhobo. Ngokukhula ngokukhawuleza kwetekhnoloji ye-elektroniki, uxinano lwePCB luya lusiya luphakama. Ukukwazi uyilo PCB ukumelana uphazamiseko kwenza umahluko omkhulu. Ukuziqhelanisa kubonise ukuba nokuba uyilo lweesekethe luchanekile kwaye uyilo lwebhodi yesekethe olushicilelweyo aluchanekanga, ukuthembeka kweemveliso ze-elektroniki kuyakuchaphazeleka. Umzekelo, ukuba imigca emibini ebhityileyo efanayo ebhodini eprintiweyo isondelelene, kuyakubakho ukulibaziseka kwifom yomqondiso, okukhokelela kwingxolo ebonakalisiweyo ekupheleni komgca wokuhambisa. Ke ngoko, xa kuyilwa ibhodi yesekethe eprintiweyo, kufuneka sinikele ingqalelo kwindlela echanekileyo, sithobele umgaqo ngokubanzi woyilo lwe-PCB, kwaye kufuneka sihlangabezane neemfuno zoyilo lokuchasana.

Imigaqo ngokubanzi yoyilo PCB

Ubeko lwezinto kunye nokufaka iintambo kubalulekile ekusebenzeni ngokukuko kweesekethe zombane. Ukwenzela ukuyila i-PCB esemgangathweni kunye nexabiso eliphantsi, kufuneka kulandelwe le migaqo ngokubanzi:

1. Iingcingo

Imigaqo ye-wiring imi ngolu hlobo lulandelayo:

(1) Iingcingo ezifanayo kwiindawo zokufaka kunye nakwiziphumo kufuneka zithintelwe kangangoko kunokwenzeka. Kungcono ukongeza ucingo lomhlaba phakathi kweentambo ukunqanda ukudibana kwengxelo.

(2) Ububanzi ubuncinci bocingo lwe-PCB ubukhulu becala bugqitywe ngamandla okubambelela phakathi kocingo kunye ne-substrate yokwambathisa kunye nexabiso lokuhamba ngoku. Xa ubukhulu befoyile yobhedu bungu-0.5mm kwaye ububanzi buyi-1 ~ 15mm, okwangoku nge-2A, ubushushu abuyi kuba ngaphezulu kwe-3 ℃. Ke ngoko, ububanzi bocingo lwe-1.5mm bunokuhlangabezana neemfuno. Kwiisekethe ezihlanganisiweyo, ngakumbi iisekethe zedijithali, i-0.02 ~ 0.3mm ububanzi bocingo luhlala lukhethiwe. Ewe, xa kunokwenzeka, sebenzisa iingcingo ezibanzi, ngakumbi amandla kunye neentambo zomhlaba. Ubuncinci bezithuba zeengcingo buxhomekeke ikakhulu kukungqinwa kokugquma kunye noqhekeko lwamandla ombane phakathi kweentambo kwimeko ezimbi. Kwimijikelezo edityanisiweyo, ngakumbi iisekethe zedijithali, isithuba sinokuba ngaphantsi kwe-5 ~ 8mil ukuba nje inkqubo iyavuma.

(3) Ishicilelwe ngocingo olushicilelweyo ngokubanzi ithatha iarc ejikelezayo, kunye neAngle elungileyo okanye iAngle ebandakanyiweyo kwisekethe ephezulu iya kuchaphazela ukusebenza kombane. Ukongeza, thintela ukusebenzisa ifoyile enkulu yobhedu ngokusemandleni, kungenjalo, xa ushushu ixesha elide, ifoyile yobhedu kulula ukuyandisa nokuwa. Xa kufuneka kusetyenziswe iindawo ezinkulu zefoyile yobhedu, kungcono ukusebenzisa iigridi. Oku kuluncedo ekususweni kwefoyile yobhedu kunye ne-substrate bonding phakathi kobushushu obuveliswe yigesi eguqukayo.