Txheej txheem cej luam
Ib pob khoom siv PCB tuaj yeem dhau daim ntawv txheeb xyuas thiab tseem ua tsis tau qhov liab -pen test.
Cov pawg-up hais tias "standard." Daim ntawv tooj liab hais tias "1 oz." Qhov saum npoo tiav hais tias "ENIG." Tsis muaj ib qho ntawm cov kev nkag yuav tsum tsis yog, tab sis txhua tus tuaj yeem txhais tau qee yam txawv rau PCB tus tsim, tus tsim khoom, EMS tus neeg muab khoom, thiab tus neeg yuav khoom.
Qhov ntawd yog qhov uas tej yaam num pib drift.
PCB pawg- nce rau kev sib dhos yuav tsum txhais tau ib qho kev tswj xyuas PCB kev tsim kho thaum tawm hauv chav tsim khoom txaus los tawm tswv yim, tshuaj xyuas kev tsim khoom.
Lub hom phiaj yog txhawm rau txheeb xyuas qhov yuav tsum tau ua ntawm cov khoom lag luam nyob ntawm, uas cov ntsiab lus ntawm PCB cov chaw tsim khoom tuaj yeem ua kom zoo, thiab cov kev hloov pauv twg xav tau kev pom zoo ua ntej kev tsim khoom pib.
Cov teeb meem nyuaj dua feem ntau yog los ntawm cov ntawv sau uas pom meej rau txhua tus tab sis yeej tsis tau raug txhais ua lus.
Khiav Red-Cwj mem Test Ua ntej tso PCB
Ua ntej tso tawm PCB rau kev tsim khoom, nyeem cov khoom tsim khoom zoo li tsis muaj ib pab pawg twg tau koom nrog cov rooj sib tham tsim ua ntej.
Tom qab ntawd ncig txhua daim ntawv uas tuaj yeem txhais tau ntau dua ib txoj hauv kev.
Hauv kev tshuaj xyuas qhov project, thawj qhov kev qhia meej yog feem ntau xav tsis thoob: cov ntaub ntawv twg yog qhov kev tswj hwm?
Ib pawg- cov lus nyob rau hauv cov ntaub ntawv layout, ib daim ntawv nyob rau hauv kev tsim cov duab kos, thiab ib qho kev xav hauv cov lus tuaj yeem ua rau txhua tus saib tsim nyog thaum piav qhia me ntsis txawv boards. Kom txog rau thaum ib qho ntawm lawv raug txheeb xyuas raws li cov txheej txheem tso tawm, cov cuab yeej thiab kev npaj tsim khoom tau tsim nyob ib puag ncig kev xav.
"Siv Tus Neeg Tsim Khoom Tus Qauv Txheej Txheem-Up"
Qhov no tuaj yeem ua tau zoo rau PCB ncaj nraim uas tsis muaj kev tswj xyuas nruj, cov khoom siv, tuab, ntawm, lossis kev tsim nyog.
Nws ua tsis tiav thaum tus qauv tsim nyob ntawm:
- kev sib raug zoo dielectric;
- tswj impedance;
- nruj tswj tiav PCB thickness;
- txhais cov khoom siv;
- ib qho HDI lossis microvia qauv;
- ib qho kev tsim nyog dhau los.
Ib pawg txheej txheem- tuaj yeem yog qhov kev xaiv tsim khoom tsim nyog.
Ib pawg txheej txheem tsis tau tso cai- nce kev hloov kho kev tswj hwm yog qhov uas yuav pib.
"1 oz tooj liab"
Daim ntawv paub no tsis tas yuav txheeb xyuas:
- cov txheej uas nws siv rau;
- seb cov txheej sab hauv thiab sab nrauv siv tib qho kev siv tooj liab;
- seb nws hais txog kev pib ntawv ci lossis tooj liab tiav;
- seb plated sab nraud nta suav nrog;
- seb puas tshwj xeeb hnyav - tooj liab lossis tooj liab - cov qauv ua tiav yuav tsum tau ua.
Ib qho yooj yim PCB yuav tsis xav tau kev nthuav dav ntxiv.
Ib tug multilayer, impedance - tswj, siab -tam sim no, zoo - kab, los yog yav tas los tsim nyog PCB feem ntau ua.
"ENIG Finish"
Lub npe tiav qhia txog cov txheej txheem plating, tab sis nws tsis piav qhia vim li cas qhov system tau xaiv.
Qhov project yuav xav tau:
- ib tug planar solderable ncoo;
- ib qho hluav taws xob tiv tauj;
- hlau txuas;
- ib qho kev cia khoom tshwj xeeb;
- ntau thermal exposure;
- xaiv tiav;
- ua raws li kev pom zoo kev ua haujlwm specification.
ENIG tuaj yeem ua tiav cov kev xav tau. Kev kos duab fabrication yuav tsum tseem qhia tias yam khoom lossis kev sib dhos yuav tsum tau tsav kev xaiv.
ENIG yog ib qho kev ua tiav rau qhov kev txiav txim siab. Nws tsis yog qhov dav dav - lub hom phiaj kev hloov kho kom zoo.
Txhais qhov khoom tiag tiag nyob ntawm
Ib pawg PCB-up piav qhia txog lub cev txheej txheej ntawm lub rooj tsavxwm.
Nyob ntawm qhov project, nws tuaj yeem tswj tau:
- txheej kev txiav txim thiab kev ua haujlwm;
- core thiab prepreg kev sib raug zoo;
- cov ntaub ntawv dielectric los yog tsev neeg cov ntaub ntawv pom zoo;
- dielectric thickness;
- tooj liab xav tau los ntawm txheej;
- tag nrho ua tiav board thickness;
- tswj- impedance kev sib raug zoo;
- los ntawm, qhov muag tsis pom, faus, lossis microvia cov qauv.
Tus neeg tsim khoom tuaj yeem pom zoo rau kev tsim kho sib txawv vim tias muaj cov khoom siv, nias tus cwj pwm, kev faib tooj liab, kab - thiab - qhov chaw muaj peev xwm, los ntawm kev ua, lossis kev tsim khoom tsim.
Qhov ntawd yog ib txwm muaj kev sib koom tes engineering. Kev tshuaj xyuas yuav tsum txiav txim siab seb qhov kev tsim kho puas tau khaws cov kev xav tau ntawm qhov khoom nyob ntawm.
Standard Stack-Ups tuaj yeem yog qhov kev xaiv zoo
Ntau lub tuam txhab PCB tuav cov qauv tsim qauv rau cov txheej txheem suav, cov khoom siv, kev teeb tsa tooj liab, thiab cov thicknesses tiav.
Kev siv tus txheej txheem pawg- tuaj yeem txhawb nqa:
- muaj cov khoom siv;
- txheej txheem kev paub;
- sai dua engineering npaj;
- kev tsim khoom sib xws;
- kev tswj tus nqi.
Ib qhov project tsis xav tau ib pawg kev cai- tsuas yog ua kom nws cov duab kos duab zoo nkauj dua.
Cov lus nug cuam tshuam yog seb qhov kev tsim kho puas tau tswj hwm cov cai, uas yuav suav nrog:
- impedance;
- tiav thickness;
- kev ua haujlwm ntawm cov khoom siv;
- ntawm cov qauv;
- tooj liab geometry;
- mechanical haum;
- kev tsim nyog raws li txoj cai.
Ib qho kev tsim kho uas ua tau raws li cov xwm txheej no tseem yog ib qho kev daws teeb meem.
01
Qhov nyiaj tshuav yog tswj kev pheej hmoo, tsis yog daim iav -Image Exercise
Kev tsim kho PCB tsim nyog tuaj yeem pab tswj hneev nti thiab twist thaum lamination thiab tom qab ua thermal.
Qee qhov kev tsim qauv siv tau tseem siv qhov sib npaug dielectric qhov sib txawv, cov txheej txheem sib txawv, kev xav tau asymmetric routing, lossis kev siv tshwj xeeb - kev sib raug zoo ntawm lub dav hlau.
Tus neeg tsim khoom yuav tsum xav txog qhov ua tiav kev tsim kho, suav nrog kev faib khoom, sib npaug tooj liab, nias tus cwj pwm, qhov ntev ntawm lub rooj tsavxwm, kev tsim vaj huam sib luag, thiab ua tiav - cov khoom yuav tsum tau txais.
Ib pawg- nce yuav tsum sib npaug qhov ua tau zoo thiab tswj tau qhov kev ua tau zoo nyob ntawm nws.
02
Ua tiav PCB Thickness tuaj yeem ua tus neeg kho tshuab interface
Cov thickness tiav tuaj yeem cuam tshuam ntau dua li liab qab - tus nqi board.
Tej zaum nws yuav muaj teeb meem rau:
- daim npav qhia;
- ntug connectors;
- nias- haum nta;
- raws li tus pins;
- cov ntaub thaiv npog;
- mounting kho vajtse;
- cov khoom siv thiab cov khoom siv;
- tswj mechanical clearances.
Lub PCB zaum ywj siab hauv ib lub thawv loj tuaj yeem lees txais cov chaw tsim khoom ua tiav ib txwm ua tiav -thickness range.
Lub rooj tsavxwm zawv zawg mus rau hauv cov lus qhia tswj lossis kev sib txuas nrog cov khoom sib txuas tsis tuaj yeem ua tsis tau.
Lub fabrication daim duab yuav tsum paub qhov txawv ntawm tus qauv nominal thickness thiab ib tug mechanically tswj cov khoom interface.
03
Tg Ib leeg Tsis txhais Thermal Robustness
Tg yog cov cuab yeej laminate tseem ceeb, tab sis nws tsis yog tus kheej piav qhia txog kev tsim kho PCB yuav coj li cas los ntawm kev sib dhos thiab kev pabcuam.
Lwm yam tseem ceeb yuav muaj xws li:
- Z-axis expansion;
- tus cwj pwm decomposition;
- tsis kam rau delamination;
- resin system;
- dej noo;
- tooj liab thiab ntawm cov qauv;
- lamination zoo;
- cov txheej txheem thermal tiag tiag.
Qhov siab dua -Tg laminate yuav tsum raug xaiv vim nws cov khoom pov thawj haum rau qhov project. Kev xaiv ib leeg tsis tsim kom muaj kev ntseeg siab ntawm thermal kev ntseeg ntawm cov khoom tiav.
04
Copper Notes xav tau peb lo lus teb
Qhov kev xav tau tooj liab yuav pom tseeb dua thaum nws teb peb nqe lus nug:
- Lub txheej twg siv rau?
- Puas yog hais txog kev pib tooj liab lossis tooj liab tiav?
- Yuav ua li cas hluav taws xob, thermal, mechanical, lossis fabrication yuav tsum tau nyob ntawm nws?
Yog tsis muaj cov lus teb no, daim ntawv xov tooj uas paub txog tseem tuaj yeem tsim cov kev txhais lus sib txawv.
Pib tooj liab thiab tiav tooj liab xa mus rau ntau theem
Sab hauv- txheej conductors feem ntau yog tsim los ntawm kev kos duab thiab etching tooj liab-cov ntaub ntawv clad.
Cov txheej txheej sab nrauv kuj tseem yuav tsum tau plated- dhau ntawm - qhov metallization thiab feem ntau tau txais tooj liab ntxiv thaum lub txheej txheej txheej txheej txheej txheej txheej txheej ({2}} plating.
Vim li ntawd, sab nrauv - txheej pib ntawv yuav tsum tsis txhob raug nyeem raws li qhov kawg ntawm tus neeg xyuas pib thickness.
Qhov twg qhov sib txawv tseem ceeb, pob khoom tsim yuav tsum tau txheeb xyuas:
- puab- txheej tooj liab;
- sab nrauv- txheej pib ntawv ci;
- yuav tsum tau ua tiav sab nrauv- txheej tooj;
- plated-los ntawm- qhov yuav tsum tau ua;
- tshwj xeeb plated los yog tooj liab -cov nta.
Daim duab kos tsuas yog xav tau kom nthuav dav txaus kom tsis txhob pib cov ntawv ci thiab cov tooj liab tiav los ntawm kev kho raws li cov ntsiab lus sib hloov.
Thicker Copper Narrows Fabrication Window
Ua kom tooj liab thickness tuaj yeem txhawb nqa:
- tam sim no - nqa cov cai;
- qis conductor kuj;
- thermal kis;
- mechanical lossis khoom lub hom phiaj.
Nws tseem tuaj yeem cuam tshuam:
- ua tiav kab dav thiab qhov sib txawv;
- etching nyiaj;
- solder{0}} daim npog qhov ncauj;
- lamination thiab resin filling;
- ntawm kev ua haujlwm;
- txheej txheem xaiv;
- raug nqi.
Ib qho qauv tsim yuav thov kom hnyav tooj liab, nplua qhov sib nrug, tswj impedance, compact pads, thiab tus nqi qis tib lub sijhawm.
Cov kev cai ntawd tsis tas yuav nyob ywj siab. Thaum lawv sib tw, cov ntaub ntawv tso tawm yuav tsum qhia tias qhov twg yuav tsum muaj qhov tseem ceeb tshaj li tsis tso tus neeg tsim khoom los twv.
Lub Rooj Sib Tham Kab Tsis Solder Ounces
Lub rooj sib dhos kab solders pads txuas nrog qhov tseeb tooj liab geometry.
Ib qho kev sib koom ua ke ntawm tus cwj pwm thermal hauv zos tuaj yeem cuam tshuam los ntawm:
- kev sib txuas ntawm dav hlau ncaj qha;
- thermal-relief geometry;
- nyob ze tooj liab pours;
- vias;
- pad qhov ntev;
- solder-paste ntim;
- kev txiav txim ntawm cov khoom;
- ua kom tiav -board kub faib.
Ib txoj kev thermal tsis sib xws ntawm ob lub ncoo ntawm cov khoom me me tuaj yeem ua rau tsis sib xws ntawm cov ntub dej los yog tombstoning.
Lub rooj tsavxwm lub nominal tooj liab hnyav, txawm li cas los xij, tsis txaus los tsim cov hauv paus hauv paus.
Ib qho hnyav- tooj liab PCB kuj tsis tuaj yeem xav tau qhov kub siab dua qhov siab dua, cov cua nitrogen, lossis ib tus qauv hnyav- tooj liab profile. Cov txheej txheem soldering yuav tsum tau validated tiv thaiv qhov tseeb populated los ua ke.
Copper hnyav yog pawg thawj coj saib -qib specification. Solder- cua sov sib koom ua ke yog cov txheej txheem hauv zos.
Xaiv qhov Surface Finish los ntawm Interface Backward
Lub PCB nto tiav tiv thaiv cov tooj liab thiab muab ib qho kev sib txuas rau kev sib txuas, hluav taws xob sib txuas, xaim sib txuas, lossis lwm yam khoom lag luam.
Deg-kev xaiv tiav yuav tsum pib nrog kev ua haujlwm ntawm qhov chaw raug: soldering, hluav taws xob tiv tauj, xaim sib txuas, hnav, lossis lwm yam khoom yuav tsum tau ua. Xaiv los ntawm ib qho kev pom zoo hierarchy feem ntau pib qhov kev tshuaj xyuas hauv qhov tsis ncaj ncees lawm.
Qhov kev txiav txim yuav suav nrog:
- solderability;
- pad planarity;
- pob khoom;
- ruaj khov thiab tuav;
- rov raug thermal;
- hluav taws xob-yuav tsum tau tiv tauj;
- hlau txuas;
- ib puag ncig tej yam kev mob;
- tus txheej txheem kev muaj peev xwm;
- nqi.
Solderable Pads
Rau ib txwm SMT thiab THT pads, kev tshuaj xyuas yuav xav txog:
- daim ntawv geometry;
- xav tau planarity;
- tivthaiv suab thiab pob;
- soldering ib ntus;
- cia tej yam kev mob;
- tuav tswj;
- rov ua dua kev cia siab;
- txoj kev tsim nyog fabrication.
ENIG muab kev sib piv cov npib tsib xee npib tsib xee- thiab- kub nto thiab dav siv rau kev nplua - qauv tsim.
OSP muab cov txheej txheem tiv thaiv cov organic ncaj qha tshaj tooj liab.
Lead-dawb HASL tsim cov solder-coated nto nrog ntau qhov chaw tshaj li cov tshuaj ua tiav.
Immersion silver, immersion tin, thiab ENEPIG muab lwm yam kev sib txuas ntawm kev sib txuas, cov txheej txheem yuav tsum tau ua, hluav taws xob tus cwj pwm, thiab tus nqi.
Cov tiav no daws teeb meem sib txawv interface. Lawv tsis tsim ib tug universal zoo qeb duas.
Hnav tiv tauj thiab lwm qhov chaw ua haujlwm
Ib tug solderable pad tas yuav tsis yog qhov tseeb tag rau kev sib cuag.
Daim npav -ntug ntiv tes, hloov cov neeg sib cuag, kuaj cov neeg sib cuag, xaim- daim ntawv cog lus, thiab lwm qhov chaw ua haujlwm yuav xav tau:
- xaiv tiav;
- sib txawv deposit system;
- tswj hnav nto;
- ib qho kev tiv thaiv tshwj xeeb;
- ib tug mob siab rau txais yuav tsum tau.
Xovxwm- haum plated qhov lossis thaj chaw tiv tauj kuj tseem yuav xav tau kev sib cais thiab kev lees txais kev tswj hwm es tsis yog cia siab rau ntawm qhov dav dav nkaus xwb- daim ntawv ua tiav.
Qhov tsawg tshaj plaws SMT tivthaiv tsis yog ib txwm muaj cov yam ntxwv uas tsav kev xaiv tiav. Hauv qee cov khoom, lub interface tseem ceeb tsuas yog siv tom qab sib dhos ua tiav.
Muaj ntau yam thermal exposures
Ib ob -sab PCB sib dhos tuaj yeem dhau los ntawm ob lub voj voog rov qab.
Cov khoom siv thev naus laus zis sib xyaw tom qab tuaj yeem raug nthwv dej, xaiv, lossis phau ntawv soldering. Localized rework tuaj yeem ua kom muaj cua sov ntxiv.
Cov kev xaiv tiav thiab cov khoom sib dhos yuav tsum tau ua raws li cov txheej txheem npaj. Cov kev cai dav dav xws li "OSP sib npaug ib qho rov qab" lossis "ENIG sib npaug peb reflows" tsis piav qhia txog cov txheej txheem tsim nyog.
Kev lag luam OSP tshuab muaj rau ntau cov hlau lead - pub dawb reflow exposures. Qhov tshwm sim tseem nyob ntawm qhov xaiv chemistry, ntim, khaws cia, tuav, thiab txheej txheem sib dhos.
ENIG thiab ENEPIG kuj nyob ntawm kev tswj plating thiab tso nyiaj zoo.
Lub kaw lus tiav, cov kev xav tau tso nyiaj, thiab lub hom phiaj sib txuas ua ke ua tiav cov lus qhia.
Qhov twg Stack-Up, Copper, thiab Finish Collide
Cov kev qhia tshwj xeeb no yooj yim tshaj rau kev nkag siab yuam kev thaum ib qho PCB muaj cov kev cai sib tw.
Fine-Pitch Cheebtsam ntawm lub Hwjchim{1}}Dense PCB
Ib qho kev ua tiav ntawm cov npoo npoo tuaj yeem txhawb kev luam ntawv zoo ib yam ntawm cov ntaub me me.
Tib lub rooj tsavxwm kuj tseem tuaj yeem muaj cov dav hlau loj, siab - kev sib txuas tam sim no, thiab siab - cov pob qij txha loj.
Hloov ntawm HASL mus rau ENIG tuaj yeem txhim kho cov ntaub qhwv ntsej muag. Nws yuav tsis tshem tawm:
tsis sib npaug zos thermal paths;
tooj liab loj- txuas txuas;
stencil-tsim kev cai;
tivthaiv- tej yam kev mob tshwj xeeb;
tag nrho cov thermal mass ntawm cov neeg tuaj koom.
Ib qho kev ua tiav tsis tuaj yeem them nyiaj rau qhov tsis muaj kev tswj xyuas tooj liab tsim.
Mixed SMT thiab Los ntawm -Qhov Sib Tsoo
Ib qho sib xyaw- thev naus laus zis PCB tuaj yeem raug:
thawj -sab SMT;
thib ob -sab SMT;
xaiv los yog yoj soldering;
phau ntawv installation;
localized rework.
Qhov saum npoo tiav yuav tsum raug ntsuas tawm tsam cov txheej txheem ua tiav tsis yog thawj SMT dhau ib leeg.
Cov pawg- nce thiab tooj liab kev tsim kho kuj tseem tuaj yeem cuam tshuam rau siab - pawg los ntawm - qhov sib koom ua ke, nias- haum thaj chaw, cov khoom sib txuas, thiab kev siv tshuab.
HDI thiab Microvia khoom
Rau ib qho HDI PCB, pawg- txhim kho kev sib raug zoo ntawm cov txheej txheem lamination, microvias, lub hom phiaj pads, tooj liab filling, thiab dielectric txheej.
Microvia kev ntseeg tau nyob ntawm ntau dua li seb lub rooj tsav xwm liab qab dhau qhov kev sim hluav taws xob zoo tib yam.
Tej yam tseem ceeb yuav muaj xws li:
ntawm geometry;
txheej txheej;
tooj liab plating;
hom phiaj-pad tsim;
lamination ib ntus;
thermal raug;
project-kev tsim nyog tshwj xeeb.
Tus kws kho mob EMS tsis rov tsim kho tus neeg siv khoom tus qauv microvia. Nws yuav tsum paub thaum twg cov khoom xav tau kev tswj xyuas, cov ntaub ntawv pov thawj ntxiv, lossis kev tswj xyuas kev tswj xyuas ua ntej pib sib dhos.
Lub Fabricator Proposal yog Engineering Input, tseem tsis tau tso tawm hloov
PCB cov tuam txhab ib txwm hais tawm cov kev hloov pauv los txhim kho:
- muaj cov khoom siv;
- nias kev tsim kho;
- impedance manufacturability;
- kab-thiab- chaw muaj peev xwm;
- ntawm kev ua haujlwm;
- kev tsim khoom sib xws;
- nqi.
Qhov ntawd yog qhov muaj txiaj ntsig engineering kev sib koom tes.
Cov lus pom zoo yuav tsum tau tshuaj xyuas raws li qhov yuav tsum tau ua nws yuav cuam tshuam.
|
Thov hloov |
Cov lus nug los daws |
|
Khoom siv tsev neeg los yog dielectric zog |
Puas yog qhov yuav tsum tau muaj hluav taws xob, thermal, mechanical, flammability, thiab cov khoom tsim nyog khaws cia? |
|
Dielectric qhov sib txawv |
Puas yog qhov kev hloov pauv cuam tshuam rau impedance, kev sib raug zoo ntawm lub dav hlau, tag nrho cov thickness, los yog txhua yam haum? |
|
Kev tsim kho tooj liab |
Nws puas muaj feem cuam tshuam rau qhov tiav geometry, impedance, txoj kev tam sim no, etching, lossis thermal cwj pwm? |
|
Via lossis microvia qauv |
Puas yog nws hloov lamination, kev ntseeg siab, kev tsim kho lub ncoo, kev sim, lossis kev lees paub? |
|
Nto tiav |
Puas yog nws tseem sib xws nrog kev sib cuag, kev sib cuag, kev cia khoom, kev ua haujlwm hluav taws xob, thiab cov neeg siv khoom xav tau? |
|
Selective contact tiav |
Puas yog hnav, tiv thaiv kev tiv thaiv, kev sib khi, thiab cov khoom siv - tseem muaj raws li cov kev cai siv? |
|
Ua tiav PCB thickness |
Nws puas cuam tshuam rau cov khoom sib txuas, cov ntaub thaiv npog, cov khoom siv sib txuas, nias- haum cov yam ntxwv, lossis cov khoom tsim nyog? |
Tsis yog txhua qhov kev hloov pauv xav tau kev pom zoo los ntawm txhua lub tuam tsev. Nws xav tau kev pom zoo los ntawm cov neeg ua haujlwm rau qhov yuav tsum tau txav mus los.
Lub tswv yim ntawm tus neeg muag khoom yuav dhau los ua lub rooj tsav xwm tso tawm tsuas yog tom qab qhov kev tso cai siv tau tiav.
Yuav tso dab tsi ua ntej PCB Fabrication
Ib pob khoom siv tau zoo tuaj yeem suav nrog:
- Gerber, ODB++, IPC-2581, lossis cov ntaub ntawv tsim khoom sib npaug;
- fabrication kev kos duab;
- pom zoo pawg- nce lossis tswj pawg- raws li qhov xav tau;
- txheej ua haujlwm;
- cov ntaub ntawv xav tau lossis cov ntaub ntawv pom zoo -tsev neeg txoj cai;
- tiav PCB thickness thiab tswj kev kam rau ua;
- tooj liab xav tau los ntawm txheej;
- tswj- impedance yuav tsum tau;
- xyaum thiab los ntawm cov ntaub ntawv;
- dig muag, faus, sau, capped, los yog microvia yuav tsum tau;
- nto tiav thiab xaiv- thaj chaw tiav;
- hluav taws xob-sib cuag, nias- haum, lossis xaim- kev sib txuas lus;
- xav tau SMT, THT, lossis sib xyaw- cov txheej txheem thev naus laus zis;
- PCB thiab kho cov khoom;
- pom zoo- sib npaug thiab hloov- cov cai pom zoo.
Tib daim ntawv tsis tas yuav muab luam rau hauv txhua cov ntaub ntawv.
Ib lub hauv paus meej ntawm txoj cai yog zoo dua li ob peb daim ntawv theej tsis sib xws. Cov ntaub ntawv layout, fabrication drawing, quotation, technical queries, thiab kev pom zoo cov ntaub ntawv yuav tsum tag nrho cov taw tes rau tib yam kev tsim kho.
Ib pob khoom tiav yog ib qho uas txhua cov ntaub ntawv piav qhia tib lub PCB tso tawm.
Cov lus nug kaw ua ntej Pawg Thawj Coj tau txiav txim
Ua ntej tso tawm PCB, paub meej tias:
- Cov pawg twg -kev sib raug zoo yog hluav taws xob, mechanically, lossis functionally tswj?
- Tus neeg tsim khoom puas tuaj yeem siv cov txheej txheem txheej txheem- nce, lossis qhov kev tsim kho puas xav tau kev pom zoo?
- Puas yog cov kev cai tooj liab raug txheeb xyuas los ntawm txheej thiab pib lossis ua tiav qhov xwm txheej uas cuam tshuam?
- Puas ua tiav PCB thickness cuam tshuam rau lub connector, enclosure, nias - haum feature, los yog fixture?
- Yuav ua li cas los ua ke thiab thermal sequence yuav cov populated board kev?
- Yam khoom ua haujlwm dab tsi coj mus rau qhov chaw xaiv tiav?
- Puas yog cov lus hais, fabrication drawing, technical approvals, thiab tso tawm tsim piav txog tib PCB tsim?
Cov lus nug no tsis hloov PCB tsim lossis cov txheej txheem validation.
Lawv tiv thaiv tsis tau txhais lus tom qab fabrication twb pib lawm.
Yuav ua li cas STHL Coordinates PCB Specifications thiab Assembly Preparation
Shenzhen STHL Technology Co., Ltd. txhawb PCB fabrication thiab downstream sib dhos npaj nyob rau hauv qhov project-raws li EMS thiab PCBA manufacturing workflows.
Nyob rau hauv qhov kev lees paub qhov project, kev tshuaj xyuas engineering tuaj yeem xav txog:
- PCB txheej suav thiab pawg-up;
- khoom thiab tiav board thickness;
- tooj liab xav tau los ntawm txheej;
- tswj impedance;
- ntawm thiab HDI qauv;
- nto tiav;
- panelization;
- stencil thiab kev npaj ua ke;
- SMT, THT, los yog sib xyaw ua ke - thev naus laus zis;
- fabrication thiab sib dhos kho qhov sib xws.
Lub hom phiaj yog txhawm rau txheeb xyuas qhov twg qhov kev xav ntawm kev tsim khoom lossis kev hloov pauv yuav cuam tshuam rau kev tsim khoom, kev npaj sib dhos, lossis cov khoom tso tawm. Thaum kawg hluav taws xob, tshuab, thiab cov khoom siv-tsim cai tseem nyob nrog cov neeg siv khoom thiab cov tswv haujlwm tsim nyog.
Saib xyuas STHL'sPCB kev tsim khoomLub peev xwm thaum PCB kev tsim kho, kev tsim cov khoom tsim, thiab kev npaj tsim khoom hauv qab yuav tsum tau sib koom ua ke.
Tib qhov tso tawm PCB lub hauv paus tuaj yeem pab txhawb qhov kev tso kawm, kev sib txuas, kev tshuaj xyuas, thiab kev ua tiav ntau lawm nyob rau hauv qhov kev pom zoo los ua ke.
Xa cov ntaub ntawv tsim tawm thiab sib dhos los ntawmThov ib daim Quote, los yog xa cov kev xav tau ntawm qhov project mus rauinfo@pcba-china.com.
Xaus
PCB pawg- nce, qhov hnyav tooj liab, thiab qhov ua tiav tiav tshwm sim raws li cov khoom sib cais hauv cov duab kos duab lossis cov lus hais.
Hauv kev tsim khoom, lawv dhau los ua ib lub rooj tsavxwm.
Cov pawg- txhim kho kev tsim kho lub cev thiab hluav taws xob. Cov tooj liab specification tsim tus neeg xyuas pib qauv. Qhov saum npoo tiav tsim cov xwm txheej ntawm kev sib cuag, kev sib cuag, lossis kev sib txuas.
Txhua yam khoom tuaj yeem tso cai rau kev tsim khoom yooj yim, tab sis qhov yooj yim xav tau ib thaj tsam kev pom zoo meej.
Kev tsim khoom-npaj PCB specification qhia tus neeg tsim khoom yuav hloov pauv dab tsi, qhia tus neeg tsim khoom xav tau dab tsi, thiab qhia rau pab pawg khoom thaum qhov kev thov yuav tsum rov qab los rau kev pom zoo.
Qhov ntawd yog lub hom phiaj ntawm kev tshuaj xyuas PCB pawg- rau kev sib dhos ua ntej cov ntaub ntawv tsim tawm, cov lus hais, cov cuab yeej, thiab kev npaj tsim khoom pib txav mus los ntawm nws tus kheej.
