Lus Nug: Cov ntaub ntawv dab tsi xav tau rau daim ntawv cog lus nyiaj txiag? Thaum twg kuv yuav tsum thov qhov kev tsocai?
Flexibility thiab Rigidity: Cov ntaub ntawv yooj yim yog ib ntu loj zuj zus ntawm PCB lag luam. Raws li peb ntsib qhov kev sib tw ntawm kev ua kom haum cov khoom siv hluav taws xob ntau ntxiv rau hauv cov pob me me, cov qauv hloov tau yooj yim yog cov kev daws teeb meem ntau tab tom pib tshawb nrhiav. Qhov zoo ntawm qhov chaw, qhov hnyav, thiab ntim khoom tau zoo -cov ntaub ntawv. Txawm li cas los xij, tus nqi thiab kev mob siab rau feem ntau yog tsim nyog los xyuas kom meej cov khoom ua rau kev lag luam.
Qhov no tsim nyog PCB cov neeg tsim qauv muab cov lus qhia ntxov los ua haujlwm nrog cov tuam txhab tsim khoom kom ntseeg tau tias koj tus qauv tsim tau thiab daws txhua yam teeb meem ntsig txog cov khoom muaj. Kev thov ib daim ntawv teev nyiaj txiag thaum ntxov ntawm tus txheej txheem kuj ua rau muaj kev nkag siab zoo los xyuas kom meej tias koj tus qauv tsim haum nyob rau hauv qhov project tag nrho cov peev nyiaj.
Nov yog qhov tseem ceeb tshaj plaws hauv kev nqis peev nyiaj txiag:
Cov Khoom Txheej Txheem Tshaj Tawm
Txawm hais tias koj muaj cov khoom siv tshwj xeeb lossis cov khoom siv tau yooj yim, nws yog qhov zoo tshaj plaws los thov kev sib tw los ntawm koj cov chaw tsim khoom nyiam. Qhov no yog lub sijhawm zoo los nrhiav seb cov ntaub ntawv twg (yog tias muaj) hauv pawg muaj lub sijhawm ua haujlwm ntev thiab yuav tsum tau muab tso rau hauv qhov project ncua sij hawm. Obviously, cov khoom siv yuav txo cov sij hawm txhuas thiab tshem tawm cov nqi tsawg kawg nkaus. Txawm li cas los xij, yog tias cov ntaub ntawv xav tau sij hawm ua ntej ntev dua, "pre- xaj" cov ntaub ntawv thaum ua tiav cov qauv tsim tom qab khaws cov pawg tuaj yeem pab txo lub sijhawm ua haujlwm tag nrho.
Qhov loj npaum li cas koj xav tau rau cov khoom?
Tus nqi ib thooj nyob ntawm seb muaj pes tsawg daim uas tuaj yeem ua zes rau ntawm cov khoom tsim tawm. Lub complexity ntawm tus tsim feem ntau dictates qhov loj ntawm cov panels siv. Qhov ntau thiab tsawg ntawm vaj huam sib luag yog 12 "x 18" thiab 18 "x 24" nrog tsawg kawg yog 1-nti ciam teb nyob ib ncig ntawm lub vaj huam sib luag rau prototyping, tooling qhov, thiab lwm yam, zoo txo qhov chaw muaj rau 10 "x 12" lossis 16 "x 22". Plexible thiab rigid elasticity PCBs feem ntau muaj cov duab txawv txawv thiab tuaj yeem ua kom haum rau cov vaj huam sib luag no, lossis muaj tswv yim zes qhov chaw los pab txhim kho kev siv vaj huam sib luag, uas tuaj yeem cuam tshuam cov nqi.
Lwm qhov cuam tshuam rau tus nqi yog seb nws puas yuav xa raws li ib daim ntawv lossis hauv ib qho array. Yog tias koj xav tau cov khoom sib sau ua ke hauv ib qho array, nws yog qhov zoo tshaj kom suav nrog qhov no hauv cov phiaj xwm hais txog nyiaj txiag. Ua haujlwm nrog koj cov chaw tsim khoom thiab, tshwj tsis yog lawv twb tau tsim ib qho array, qhia rau lawv txog tus nqi -ib qho zoo; yog tias ib qho array tau tsim, xyuas kom meej tias nws siv qhov loj tshaj plaws ua tau ntau lawm panels.
Cov kev xav tau zoo yog dab tsi?
IPC Chav Kawm 2, IPC Chav Kawm 3, thiab MIL-31032 txhua tus muaj cov kev xav tau sib txawv thiab nqe lus, uas yog qhov tseem ceeb rau koj qhov kev kwv yees. Koj puas xav tau Part 3 xeem? Qhov no kuj cuam tshuam rau tag nrho cov nqi.
Qhov tsawg kawg nkaus laum qhov loj yog dab tsi?
Qhov tsawg kawg nkaus laum qhov loj tuaj yeem cuam tshuam tus nqi. Cov cuab yeej drilling feem ntau pheej yig dua li laser drilling, tab sis cov tshuab drilling me dua 0.008 " tuaj yeem cuam tshuam tus nqi. Cov nqi ntxiv ntawm cov tshuab drilling me me nyob ntawm cov chaw tsim khoom thiab cov txheej txheem, yog li nws yog qhov tseem ceeb kom nkag siab cov yam ntxwv no.
Dab tsi yog qhov dhau ntawm - qhov kev teeb tsa?
Koj puas xav txog qhov dhau los ntawm - qhov kev teeb tsa los ua tus qauv hauv koj tus qauv? Puas muaj cov dig muag vias thiab faus vias? Puas muaj microvias? Yog tias muaj, cov vias no puas tau ntim, stacked, lossis staggered? Muaj pes tsawg txheej? Tus naj npawb ntawm lamination cycles xav tau los tsim cov qauv hloov pauv hloov tau yooj yim los yog muaj kev cuam tshuam loj rau tus nqi.
Dab tsi yog qhov kev xaiv ntawm qhov chaw tiav?
Saj zawg zog thiab rigid saj zawg zog designs yuav siv tib lub nto tiav kev xaiv raws li cov ntaub ntawv nruj. Koj puas xav tau HASL? Lead-dawb HASL SL, OSP, Silver, Tin, ENIG, ENEPIG, ENIG- cov no txhua tus muaj cov ntsiab lus sib txawv, thiab ob qho tib si tus nqi thiab lub sij hawm xa khoom raug cuam tshuam los ntawm cov chaw tsim khoom sab hauv thiab qhov chaw ua tiav feem ntau siv.
Los teb cov lus nug qub:
Kev thov tus nqi thaum ntxov ntawm lub voj voog tsim tuaj yeem pab txiav txim siab seb tus qauv tsim haum rau cov khoom siv nyiaj. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog thaum siv cov ntaub ntawv hloov tau yooj yim thiab nruj, raws li cov khoom siv xws li kev siv cov khoom siv thiab los ntawm - cov qauv hauv qhov tuaj yeem cuam tshuam cov nqi. Tom qab kwv yees cov ntaub ntawv thiab tus naj npawb ntawm cov khaubncaws sab nraud povtseg raws li cov qauv thiab cov kev xav tau zoo, hu rau koj lub chaw tsim khoom rau kev sib tw thiab kev siv nyiaj txiag. Qhov no yog lub sijhawm zoo los pib sib tham thiab nug cov lus nug kom ntseeg tau tias koj tsis txhob ua yuam kev ntxiv cov nqi tsim tsim.