Dab tsi yog qhov txawv ntawm PCBs?
PCB units muaj nyob rau hauv ntau hom rau ntau hom kev siv. Xaiv qhov tsim nyog tsim nyog rau cov khoom lag luam yuav xav tau tus kws tshaj lij los txiav txim siab txog kev npaj siv lub cuab yeej, nws qhov ntev thiab nws lub zog tshwj xeeb. Tshawb xyuas cov hauv qab no kom nkag siab txog hom ntawv luam tawm Circuit boards thiab hom twg tsim nyog rau koj qhov kev sim siab:
PCBs ib leeg: PCB fabrication yuav ua rau lub rooj tsav xwm Circuit Court tawm ntawm ib txheej ntawm substrate thiab nyias txheej ntawm hlau. Tag nrho cov khoom yog soldered mus rau ib sab.
Ob-sided PCBs: Ib hom PCB uas cov ntawv hlau conductive siv rau ob sab ntawm lub substrate.
Lub qhov yuav raug laum los ntawm qhov nruab nrab ntawm lub rooj tsav xwm Circuit Court kom muaj kev sib txuas khiav mus rau ob sab.
Multilayer PCBs: Yam tsawg kawg ntawm peb txheej ob-txheej PCBs stacked nyob rau sab saum toj ntawm ib leeg nrog ob peb txheej ntawm rwb thaiv tsev kom txo cov cua sov. Cov nplaum nplaum tshwj xeeb khaws cov PCBs ua ke.
Flexible PCBs: Cov ntawv luam tawm Circuit Court boards showcasing hloov tau yooj yim substrates los pab engineers hloov mus rau compact khoom duab. Lub tshuab yuav muaj nyob rau hauv daim ntawv ntawm ib leeg-sab, ob-sided los yog multilayer tsim.
Rigid PCBs: Pab tau rau cov neeg siv khoom lag luam uas ua kom zoo ib yam thoob plaws hauv lawv lub neej. Rigid PCBs yog tsim los siv rugged substrates uas tiv thaiv kev sib tw.
Rigid-flex PCBs: Cov ntawv luam tawm hauv Circuit Court siv ob qho tib si nruj thiab hloov tau yooj yim. Cov kev teeb tsa no tso cai rau cov neeg tsim khoom lag luam kom txuag tau qhov chaw, vim tias txoj kev sib txuas yooj yim thiab yooj yim tuaj yeem suav nrog rau tib lub rooj sib tham.
Aluminium-backed PCBs: Ib hom PCB uas hloov cov txhuas substrate qhov twg fiberglass yuav. Tsim los siv nrog lub zog siab PCB hluav taws xob zoo li LED teeb.
High-frequency PCBs: Circuit Court board engineered xa cov teeb liab muaj zog li 2 GHz.
Dab tsi yog PCBs tsim los ntawm?
Cov txheej txheem PCB fabrication zoo li txawv raws li lub hom phiaj ntawm chav tsev thiab yuav tsum muaj hwj chim npaum li cas los ua kom muaj lub tshuab hluav taws xob ua haujlwm. Ua ntej xaiv cov khoom siv rau lub rooj sib txoos hauv Circuit Court, nws yog ib lub tswv yim zoo kom paub koj tus kheej nrog plaub qhov tseem ceeb ntawm PCB chav tsev:
Substrate: Cov txheej txheem thav duab ntawm lub rooj tsav xwm Circuit Court - tag nrho cov khoom txuas rau saum npoo no.
Laminates: Cov ntaub ntawv uas tuav tag nrho cov txheej PCB ua ke.
Lub npog ntsej muag: zaum saum cov ntawv ci tooj liab rau kev sib cais thiab tiv thaiv kev sib txuas ntawm ib puag ncig.
Silkscreen: Fastens rau lub npog ntsej muag kom cov khoom tuaj yeem sau npe.
Dab tsi yog schematic?
Daim duab schematic, lossis schematic daim duab, yog ib qho kev sawv cev ntawm cov ntsiab lus ntawm lub cev siv cov duab kos duab kos duab tsis yog cov duab tiag tiag.
Dab tsi yog qhov khoom xa tuaj rau PCB Layout kev pabcuam?
Rau PCB Layout kev pabcuam xaj, cov ntaub ntawv hauv qab no yuav muab rau hauv cov ntaub ntawv tso tawm:
Tag Nrho Gerber datasets suav nrog Laum cov ntaub ntawv (Circuit layers, Mask layers, Silk layers, Outline, Launch layers, Paste layers)
Xaiv & Muab cov ntaub ntawv
Final Bill of Material file
Project Netlist thiab PDF file
Dab tsi ntawm cov khoom siv feem ntau siv los ua cov PCBs nruj?
FR4 khoom
High teeb liab ceev cov ntaub ntawv
High-speed FR4 substrate nrog DF 1Ghz.
Kev kub ceev FR4 substrate nrog Df 10Ghz
Tsawg Df cov khoom siv ceramic, kev ua haujlwm ntawm 10Ghz
PTFE cov khoom siv los yog cov khoom siv PTFE reinforced
High-temperature PTFE khoom
Dab tsi ntawm cov txheej txheem fabrication yog siv los ua nruj PCBs?
Muaj ntau cov txheej txheem fabrication siv los ua cov PCBs nruj. Cov kauj ruam hauv qab no suav nrog ntau cov txheej txheem.
Lamination
Drilling
tooj liab plating
Tooj liab etching
Solder daim npog qhov ncauj
Nto tiav
Cov khoom siv silkscreen
Depanelization
Kev sim
Dab tsi ntawm kev ntsuam xyuas ua kom nruj PCBs dhau?
Hluav taws xob Test rau Qhib thiab luv luv
AOI (Automated Optical Inspection)
TDR Impedance Test
Nyob zoo Cov Kev Ntsuas Kev Ntsuas
Kev tshuaj xyuas qhov muag tsis pom kev
Solderability Test
Kev Ntsuas Kub
Daim kab xev Test
Peel Test
Ionic Contamination Test
Nws yuav siv sij hawm ntev npaum li cas los tsim ib lub PCB nruj?
Cov hauv qab no yog hais txog lub sijhawm xav tau los tsim cov PCBs nruj hauv Richfulljoy.
Nws yuav siv sij hawm 1-5 hnub rau ceev tig nruj PCBs.
1-2 lub lis piam raug coj los ua qauv thiab cov khoom me me ntawm cov PCBs nruj.
2-4 lub lis piam yog siv rau kev tsim khoom loj ntawm PCBs nruj.
Dab tsi yog qhov txawv txav: Rigid PCB vs flex PCB?
Qhov sib txawv tseem ceeb ntawm rigid PCB board thiab flex PCB board yog:
1), Lawv yog tsim los ntawm cov khoom sib txawv: nruj Circuit Court boards yog tsim los ntawm FR4, ceramic, hlau core, PTFE thiab lwm yam, tag nrho cov ntawm lawv yog nruj (tsis tuaj yeem khoov), thaum hloov pauv PCB yog tsim los ntawm polyimide (PI), PET , Kapton matrial uas tuaj yeem khoov tau ntau txhiab zaus;
2), Yog hais tias lawv yog bendable los yog tsis: nruj PCB tsis khoov, tab sis flex PCB yog khoov tau;
3), Lawv muaj kev siv sib txawv: cov khoom siv hluav taws xob tsis zoo yog siv rau hauv cov khoom siv hluav taws xob uas tsis txav mus los, tab sis flex circuit boards yog siv rau hauv cov khoom siv uas ib txwm txav mus los, xws li lub koob yees duab, laptops, xov tooj ntawm tes, txav probes thiab lwm yam.
Nws raug nqi npaum li cas los tsim ib lub PCB nruj?
Nws yog ib qho nyuaj hais tias muaj pes tsawg lub PCB nruj. Cov hauv qab no yog hais txog cov ntsiab lus tseem ceeb uas cuam tshuam rau tus nqi ntawm PCB nruj.
Base khoom hom
Txheej suav ntawm cov tawv PCB
Tooj thickness
Lub thickness ntawm lub nruj PCB
Layup qauv
Qhov muag tsis pom / faus vias
Nto tiav
Kev siv tshuab tshwj xeeb lossis kev xav tau
Dab tsi yog qee qhov txiaj ntsig ntawm kev siv cov PCBs nruj?
Rigid PCBs yog cov siv dav tshaj plaws PCBs. Nws cov txiaj ntsig tseem ceeb yog:
High dimension stability
Kev ntseeg siab
Tus nqi qis