Best Technology yenye abavelisi pcb ilungileyo eprintiweyo ababoneleli ngebhodi yesekethe e China
Ulwimi
Best Technology yenye abavelisi pcb ilungileyo eprintiweyo ababoneleli ngebhodi yesekethe e China
Kwihlabathi le-electronics, iibhodi zeesekethe eziprintiweyo (PCBs) zidlala indima ebalulekileyo ekudibaniseni nasekunikeni amandla amacandelo ahlukeneyo. Ziyintsika yazo zonke izixhobo zombane, ukusuka kwii-smartphones ukuya koomatshini bemizi-mveliso. Xa kuziwa ekuyileni i-PCB yeprojekthi, ubukhulu bomaleko wobhedu yingqwalasela ebalulekileyo. IiPCB zobhedu olunzima, ezikwabizwa ngokuba ziiPCB zobhedu ezishinyeneyo, ziye zanda kakhulu ekutshajini iimoto ngenxa yeempawu zazo ezizodwa kunye neenzuzo. Kweli nqaku, siza kuxubusha ukuba kutheni sithathela ingqalelo iiPCB zobhedu olunzima kwiprojekthi yakho yangoku ephezulu.
Yintoni i-PCB yobhedu olunzima?
I-PCB yobhedu enzima yibhodi yesekethe enomaleko wobhedu ongqindilili ngokungaqhelekanga, oqhele ukugqitha ii-ounces ezi-3 ngonyawo lwesikwere (oz/ft²). Xa kuthelekiswa, ii-PCBs eziqhelekileyo zidla ngokuba nobungqingqwa bobhedu obuyi-1 oz/ft². IiPCB zobhedu ezinzima zisetyenziswa kwizicelo apho kufuneka khona umsinga ophezulu, okanye ibhodi kufuneka imelane noxinzelelo lomatshini kunye nobushushu.
Izibonelelo zePCBs zeCopper enzima
l Umthamo wangoku oPhezulu
Umaleko wobhedu otyebileyo kwiPCB yobhedu enzima ivumela umthamo wangoku ophezulu. Oku kuyenza ilungele usetyenziso lwamandla aphezulu njengombane, izilawuli zeemoto, kunye nezixhobo zamashishini. IiPCB zobhedu ezinzima zinokuthwala ukuya kuthi ga kwi-amps ezingama-20 okanye ngaphezulu, xa kuthelekiswa nomgangatho we-5-10 amps we-PCB eqhelekileyo.
l Ulawulo lweThermal
IiPCB zobhedu ezinzima zaziwa ngobuchule bazo obubalaseleyo bolawulo lobushushu. Umaleko wobhedu otyebileyo uvumela ukutshatyalaliswa kobushushu obungcono, ukunciphisa umngcipheko wokushisa kunye nokungaphumeleli kwecandelo. Oku kubenza balungele izicelo ezifuna amandla aphezulu kunye nokuvelisa ubushushu obuninzi.
l Ukuqina
IiPCB zobhedu ezinzima zomelele kwaye zomelele kuneePCB eziqhelekileyo. Umaleko wobhedu otyebileyo ubonelela ngenkxaso yomatshini engcono, ibenza baxhathise umonakalo ovela kungcangcazelo, ukothuka, kunye nokugoba. Oku kubenza balungele imeko engqongileyo kunye nezicelo zamashishini.
l Ukwandiswa kokuguquguquka
IiPCB zobhedu olunzima zibonelela ngolwandiso lobubhetyebhetye kuyilo xa kuthelekiswa neePCB eziqhelekileyo. Umaleko wobhedu otyebileyo uvumela ukuyila okuyinkimbinkimbi kunye nokudibanisa, ukunciphisa ubukhulu bebhodi. Oku kubenza balungele usetyenziso apho indawo ilinganiselwe.
l Umqondiso ongcono weMfezeko
Umaleko wobhedu otyebileyo kwiiPCB zobhedu obunzima zibonelela ngentembeko yophawu olungcono. Oku kunciphisa umngcipheko wokulahlekelwa ngumqondiso kunye nokuphazamiseka, okubangelwa ukusebenza okuthembekileyo kunye nokusebenza kakuhle kwesekethe.
Uyilo lobungqingqwa beKopolo lwePCB yobhedu olunzima?
Ngenxa yobunzima bobhedu kwi-PCB yobhedu enzima bungqingqwa ke FR4 PCB eqhelekileyo, ngoko kulula ukujijwa ukuba ubungqingqwa bobhedu abuhambelani nenye kumaleko alinganayo. Umzekelo, ukuba uyila i-8 layers yobhedu enzima ye-PCB, ngoko ukutyeba kobhedu kwinqanaba ngalinye kufuneka kulandele L8=L1, L7=L2, L6=L3, L5=L4 umgangatho.
Ukongeza, unxulumano phakathi kobuncinci bendawo yomgca kunye nobubanzi obuncinci bomgca nawo kufuneka buthathelwe ingqalelo, landela umthetho woyilo kuya kunceda ukugudisa imveliso kunye nokunciphisa ixesha lokukhokela. Ngezantsi yimithetho yoyilo phakathi kwabo, i-LS ibhekisela kwindawo yomgca kwaye i-LW ibhekisela kububanzi bomgca.
Gqoka imithetho yomngxuma kwibhodi yobhedu enzima
A plated ngokusebenzisa umngxuma (PTH) kwibhodi yesekethe eprintiweyo kukudibanisa icala phezulu kunye ezantsi ukwenza umbane. Kwaye xa uyilo lwe-PCB luneemaleko ezininzi zobhedu, iiparamitha zemingxuma kufuneka ziqwalaselwe ngononophelo, ngakumbi iidamitha zomngxuma.
KwiTekhnoloji eBalaseleyo, ubuncinci bedayamitha ye-PTH kufuneka bube>=0.3mm ngelixa i-annular yobhedu kufuneka ibe yi-0.15mm ubuncinane. Ngobunzima bobhedu bodonga lwe-PTH, i-20um-25um njengento engagqibekanga, kunye nobuninzi be-2-5OZ (50-100um).
Iiparamitha ezisisiseko zePCB yobhedu olunzima
Nazi ezinye iiparamitha ezisisiseko zePCB yobhedu enzima, ndiyathemba ukuba oku kunokukunceda ukuba uqonde ukubanako kweTekhnoloji eNgcono ngcono.
l Izinto ezisisiseko: FR4
l Ubunzima bobhedu: 4 OZ~30 OZ
l Ubhedu obunzima obugqithisileyo: 20 ~ 200 OZ
l Ulwandlalo: Umzila, ukubetha, V-Sika
l Imaski yeSolder: Mhlophe/Mnyama/Buhlaza/Luhlaza/Ioyile eBomvu (Ushicilelo lwemaski yeSolder akulula kwiPCB yobhedu olunzima.)
l Ukugqitywa komphezulu: Igolide yokuntywiliselwa, i-HASL, i-OSP
l Ubungakanani bePaneli enkulu: 580*480mm (22.8"*18.9")
Ukusetyenziswa kweePCB zeCopper ezinzima
IiPCB zobhedu ezinzima zisetyenziswa kwizicelo ezahlukeneyo, kubandakanya:
l Izibonelelo zamandla
l Abalawuli beemoto
l Oomatshini bemizi-mveliso
l Iimoto ze-elektroniki
l I-Aerospace kunye neenkqubo zokukhusela
l Iziguquli zelanga
l Ukukhanya kwe-LED
Ukukhetha ubukhulu bePCB obufanelekileyo bubalulekile kwimpumelelo yayo nayiphi na iprojekthi. IiPCB zobhedu ezinzima zibonelela ngeempawu ezizodwa kunye neenzuzo ezizenza zilungele ukusetyenziswa kwamandla aphezulu kunye nobushushu obuphezulu. Ukuba ufuna ukuqinisekisa ukuthembeka kunye nokusebenza kweprojekthi yakho, cinga ukusebenzisa iiPCB zobhedu ezinzima. IThekhnoloji egqwesileyo ineminyaka engaphezu kwe-16 yamava okuvelisa kwiiPCB zobhedu ezinzima, ngoko ke siqinisekile ukuba sinokuba ngoyena mthengisi unokuthenjwa eTshayina. Wamkelekile ukuba uqhagamshelane nathi nangaliphi na ixesha ngayo nayiphi na imibuzo okanye nayiphi na imibuzo malunga PCBs.
