Txhua PCB xav tau lub hauv paus zoo: cov lus qhia sib dhos

Cov yam tseem ceeb ntawm PCB suav nrog cov khoom siv dielectric, tooj liab thiab kab raws qhov loj me, thiab cov txheej txheem txheej txheem lossis txheej txheej loj. Cov khoom siv raws li dielectric muab ob lub luag haujlwm yooj yim rau PCB. Thaum peb tsim cov PCBs nyuaj uas tuaj yeem tswj cov teeb liab ceev, cov khoom siv hluav taws xob cais tawm cov teeb liab pom ntawm cov khaubncaws sab nraud povtseg ntawm PCB. Kev ruaj ntseg ntawm PCB nyob ntawm qhov sib txawv impedance ntawm dielectric ntawm tag nrho cov dav hlau thiab cov impedance tsis sib xws ntawm ntau zaus.

Txawm hais tias nws pom tias tooj liab yog qhov pom tseeb raws li tus neeg xyuas pib, muaj lwm yam haujlwm. Qhov sib txawv ntawm qhov hnyav thiab qhov tuab ntawm tooj liab yuav cuam tshuam rau lub peev xwm ntawm lub voj voog kom ua tiav qhov tseeb ntawm tam sim no thiab txhais cov nyiaj poob. Raws li lub dav hlau hauv av thiab lub dav hlau fais fab muaj kev txhawj xeeb, qhov zoo ntawm cov txheej tooj liab yuav cuam tshuam rau qhov impedance ntawm lub dav hlau hauv av thiab thermal conductivity ntawm lub dav hlau fais fab. Sib piv cov tuab thiab ntev ntawm qhov sib txawv ntawm cov teeb liab khub tuaj yeem ua kom muaj kev ruaj ntseg thiab kev ncaj ncees ntawm Circuit Court, tshwj xeeb tshaj yog rau cov teeb liab siab.

Cov kab ntawm lub cev, qhov ntev, cov ntaub ntawv, cov ntaub ntawv qhia, los ntawm cov ntaub ntawv ntawm lub qhov, cov ntaub ntawv ntawm cov cuab yeej, thiab cov lus qhia sib dhos tsis yog tsuas yog piav qhia txog txheej txheej txheej txheej lossis txheej txheej, tab sis kuj yog lub hauv paus ntawm kev ntsuas PCB. Cov ntaub ntawv sib dhos tswj kev teeb tsa thiab qhov chaw ntawm cov khoom siv hluav taws xob. Txij li cov txheej txheem "luam tawm Circuit Assembly" txuas cov khoom siv ua haujlwm rau cov cim ntawm PCB, cov txheej txheem sib dhos yuav tsum tau pab pawg tsim los tsom mus rau kev sib raug zoo ntawm kev tswj lub teeb liab, kev tswj xyuas thermal, pad qhov chaw, hluav taws xob thiab kev sib dhos cov cai, thiab cov khoom siv lub cev. installation ua tau raws li cov neeg kho tshuab xav tau.

Txhua tus qauv PCB xav tau cov ntaub ntawv sib dhos hauv IPC-2581. Lwm cov ntaub ntawv muaj xws li cov nqi ntawm cov ntaub ntawv, Gerber cov ntaub ntawv, CAD cov ntaub ntawv, schematics, manufacturing drawings, sau ntawv, sib dhos drawings, tej yam kev xeem specifications, tej yam specifications, thiab tag nrho cov kev cai. Qhov raug thiab nthuav dav hauv cov ntaub ntawv no txo ​​qis kev ua yuam kev thaum lub sijhawm tsim qauv.

02
Cov cai uas yuav tsum tau ua raws li: tshem tawm thiab cov txheej txheem

Cov kws tsim hluav taws xob uas teeb tsa cov xaim hauv tsev yuav tsum ua raws li cov cai los xyuas kom meej tias cov xov hlau tsis khoov kom nruj los yog ua rau cov ntsia hlau los yog cov ntsia hlau siv los txhim kho phab ntsa ntub dej. Kev hla cov xov hlau los ntawm cov phab ntsa stud yuav tsum muaj txoj hauv kev los txiav txim siab qhov tob thiab qhov siab ntawm txoj kev routing.

Cov txheej khaws cia thiab txheej txheej txheej txheem tsim cov kev txwv tib yam rau PCB tsim. Cov txheej txheem khaws cia txhais cov kev txwv ntawm lub cev (xws li kev muab tso rau hauv cov khoom siv lossis cov khoom siv kho qhov muag) lossis kev txwv hluav taws xob (xws li thaiv thaiv) ntawm software tsim. Cov txheej thaiv kab teeb tsa kev sib txuas ntawm cov khoom sib txuas. Nyob ntawm daim ntawv thov thiab hom ntawm PCB, cov txheej txheem xaim tuaj yeem muab tso rau saum thiab hauv qab cov khaubncaws sab nraud povtseg lossis sab hauv ntawm PCB.

01
Nrhiav qhov chaw rau lub dav hlau hauv av thiab lub dav hlau fais fab
Txhua lub tsev muaj lub chaw pabcuam hluav taws xob loj lossis lub chaw thauj khoom uas tuaj yeem tau txais hluav taws xob los ntawm cov tuam txhab hluav taws xob thiab xa mus rau cov khoom siv hluav taws xob uas lub teeb hluav taws xob, qhov hluav taws xob, cov khoom siv, thiab cov khoom siv. Lub dav hlau hauv av thiab lub dav hlau fais fab ntawm PCB muab kev ua haujlwm zoo ib yam los ntawm kev cog lus hauv Circuit Court thiab faib cov board sib txawv rau cov khoom siv. Ib yam li cov kev pabcuam vaj huam sib luag, lub zog thiab lub dav hlau hauv av tuaj yeem muaj ntau yam tooj liab uas tso cai rau cov circuits thiab subcircuits txuas nrog rau cov peev txheej sib txawv.

02
Tiv thaiv lub rooj tsav xwm Circuit Court, tiv thaiv cov xaim
Cov kws kos duab hauv tsev ua tib zoo sau cov xim thiab ua tiav ntawm qab nthab, phab ntsa thiab kho kom zoo nkauj. Ntawm PCB, txheej txheej luam ntawv siv cov ntawv sau qhia qhov chaw ntawm cov khoom nyob rau saum thiab hauv qab txheej. Tau txais cov ntaub ntawv los ntawm kev tshuaj ntsuam luam ntawv tuaj yeem txuag pab pawg tsim los ntawm kev sau cov ntaub ntawv sib dhos.

Cov primers, xim, stains thiab varnishes siv los ntawm cov neeg pleev kob hauv tsev tuaj yeem ntxiv cov xim zoo nkauj thiab textures. Tsis tas li ntawd, cov kev kho saum npoo no tuaj yeem tiv thaiv qhov chaw tsis zoo. Ib yam li ntawd, thaum qee hom khib nyiab ntog rau ntawm kab, lub ntsej muag nyias nyias ntawm PCB tuaj yeem pab PCB tiv thaiv kab los ntawm luv luv.