Common Failure Modes of Rigid-Flex Circuit Boards: Kev Pom Zoo

Qhia:

Hauv qhov blog no, peb yuav tshawb nrhiav cov kev ua haujlwm tsis zoo ntawm lub rooj tsav xwm nruj-flex Circuit Court boards, lawv cov laj thawj, thiab cov kev daws teeb meem los xyuas kom meej qhov ua tau zoo thiab kev ua haujlwm ntev. Los ntawm kev nkag siab txog cov kev ua tsis tau zoo no, cov tuam txhab, cov kws tsim khoom thiab cov neeg tsim qauv tuaj yeem txhim kho Circuit Court board kev ntseeg tau, thaum kawg txhim kho cov khoom zoo thiab cov neeg siv khoom txaus siab.

Rigid-flex circuit boards yog nrov thoob plaws hauv kev lag luam vim lawv qhov yooj yim, kev ntseeg tau, thiab tsim qauv tsim. Raws li kev siv thev naus laus zis txuas ntxiv mus, cov laug cam no ua nyuaj dua, ua rau muaj qhov xav tau los daws cov kev ua tsis tau zoo.

1. Mechanical stress:

Ib qho ntawm cov hom kev ua tsis tiav ntawm cov rigid-flex Circuit Court boards yog cov neeg kho tshuab kev nyuaj siab. Kev sib xyaw tshwj xeeb ntawm cov ntaub ntawv nruj thiab hloov tau yooj yim ua rau cov laug cam muaj kev cuam tshuam rau kev khoov / twisting, uas ua rau muaj kev ntxhov siab thiab hnyav. Nyob rau tib lub sijhawm, qhov kev ntxhov siab no tuaj yeem ua rau tawg, tawg, thiab kev puas tsuaj rau lub voj voog, thaum kawg ua rau ua tsis tiav. Hom kev ua tsis tiav no tuaj yeem ua rau hnyav dua los ntawm cov khoom xws li kev tuav tsis raug, kev khoov ntau dhau, lossis kev xav tsim tsis txaus.

Txhawm rau txo cov kev ntxhov siab ntsig txog kev ua tsis tiav, nws yog ib qho tseem ceeb rau kev txhim kho cov txheej txheem tsim thiab tsim khoom. Cov qauv kev txhawb nqa tsim nyog, kev taug qab kom raug, thiab kev xaiv cov khoom siv ceev faj tuaj yeem txhim kho lub rooj tsav xwm hauv Circuit Court kom muaj peev xwm tiv taus cov neeg kho tshuab kev ntxhov siab. Kev soj ntsuam nruj thiab kev ntsuam xyuas kev ntxhov siab kuj tseem ceeb heev los txheeb xyuas qhov muaj peev xwm tsis muaj zog thiab txhim kho qhov tsim kom zoo.

2. Thermal stress:

Rigid-flex Circuit Court boards ua haujlwm nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias thiab yog li nws muaj feem cuam tshuam rau thermal stress-related failures. Qhov kub thiab txias tuaj yeem ua rau cov ntaub ntawv sib txawv nthuav dav thiab sib cog lus ntawm cov nqi sib txawv, ua rau delamination, solder teeb meem sib koom ua ke thiab kev sib txuas tsis ua haujlwm. Cov cua kub ntau dhau los yog qhov kub thiab txias hloov ceev tuaj yeem ua kom qhov kev ua tsis tiav no, cuam tshuam tag nrho cov haujlwm thiab kev ntseeg siab ntawm lub rooj tsavxwm.

Txhawm rau daws qhov teeb meem ntsig txog kev ntxhov siab, cov neeg tsim qauv yuav tsum xav txog kev tswj xyuas thermal kom zoo thaum lub rooj teeb tsa thiab sib dhos. Thaum tshav kub kub dab dej, thermal vias, thiab tswj impedance ib puag ncig pab faib cov cua sov kom sib npaug thiab tiv thaiv cov ntsiab lus ntawm thermal stress. Kev siv cov ntaub ntawv kub kub thiab kev ua tib zoo tso rau hauv cov khoom tseem tuaj yeem txo qhov cuam tshuam ntawm thermal stress ntawm lub rooj tsavxwm.

3. Tshuaj thiab ib puag ncig yam tseem ceeb:

Rigid-flex circuit boards feem ntau ntsib cov tshuaj hnyav thiab ib puag ncig, ua rau lawv tsis ua haujlwm. Kev cuam tshuam rau cov dej noo, cov khoom corrosive, thiab cov kab mob tuaj yeem ua rau oxidation, xeb, thiab degradation ntawm Circuit Court Cheebtsam. Tsis tas li ntawd, cov khoom siv sab nraud xws li plua plav, khib nyiab, thiab av noo tuaj yeem cuam tshuam rau cov rwb thaiv tsev thiab cov txheej tiv thaiv, ua rau cov khoom siv hluav taws xob muaj kev cuam tshuam rau luv luv Circuit Court thiab hluav taws xob tsis ua haujlwm.

Txhawm rau tiv thaiv cov tshuaj lom neeg thiab ib puag ncig tsis ua haujlwm, cov tuam txhab tsim khoom yuav tsum ua qhov tseem ceeb ntawm cov txheej txheem txheej txheem, uas muab cov txheej txheem tiv thaiv kev ya raws, tshuaj lom neeg thiab khib nyiab. Cov txheej txheem sealing tsis muaj dej, xws li potting lossis encapsulation, tuaj yeem ua rau lub rooj tsavxwm tsis kam rau cov khoom siv sab nraud. Ntxiv rau cov kev ntsuas no, kev tshuaj xyuas tsis tu ncua, kev sim thiab kev saib xyuas yuav tsum tau txheeb xyuas thiab txo qis cov cim qhia ntxov ntawm kev ua tsis tiav los ntawm cov tshuaj lom neeg lossis ib puag ncig.

4. Hluav taws xob ntau dhau thiab ESD:

Hluav taws xob overload thiab electrostatic paug (ESD) yog ib qho tseem ceeb ua rau lub rigid-flex Circuit Court board tsis ua hauj lwm. Kev tsim hluav taws xob tsis tsim nyog, cov khoom siv hluav taws xob siab, lossis cov hluav taws xob tam sim ntawd tuaj yeem ua rau cov khoom kub hnyiab, cov kab tawg, thiab cov khoom siv hluav taws xob tsis ua haujlwm. Electrostatic paug (ESD) tshwm sim thaum muaj hluav taws xob zoo li qub rau ntawm lub rooj tsav xwm, uas tuaj yeem ua rau muaj kev puas tsuaj loj thiab tsis muaj kev puas tsuaj rau cov khoom siv hluav taws xob.

Tiv thaiv hluav taws xob overloads thiab ESD-hais txog kev ua tsis tiav yuav tsum mob siab rau kev tsim qauv, suav nrog kev tiv thaiv hluav taws xob, kev tswj hluav taws xob, thiab cov txheej txheem hauv av. Kev sib xyaw ua ke ntawm cov tiv thaiv hluav taws xob, fuses, thiab ESD cov cuab yeej tiv thaiv tuaj yeem txo qhov kev pheej hmoo ntawm kev puas tsuaj los ntawm hluav taws xob overloads lossis ESD cov xwm txheej. Tsis tas li ntawd, kev cob qhia cov neeg ua haujlwm ntawm ESD cov txheej txheem kev nyab xeeb thiab kev tswj hwm kev tsim khoom ib puag ncig ua lub luag haujlwm tseem ceeb hauv kev txo qis cov kev ua tsis tiav no.

Hauv kev xaus:

Kev nkag siab txog cov kev ua tsis tau zoo ntawm cov rigid-flex Circuit Court boards yog qhov tseem ceeb rau cov tuam txhab, engineers thiab cov neeg tsim qauv nrhiav kev txhim kho kev ntseeg tau thiab txo cov kev pheej hmoo. Mechanical stress, thermal stress, tshuaj lom neeg thiab ib puag ncig, hluav taws xob overstress thiab ESD tag nrho ua rau muaj kev hem thawj rau kev ua haujlwm zoo ntawm cov rooj sib tham no. Los ntawm kev siv cov kev xav tau zoo, kev xaiv cov khoom siv, cov txheej txheem tsim khoom, thiab cov txheej txheem kev sim, cov kev ua tsis tiav no tuaj yeem txo qis, ua kom lub neej ntev thiab kev ua haujlwm zoo ntawm cov khoom siv hluav taws xob tsis zoo. Thaum kawg, kev hais tawm cov kev ua tsis tiav no yuav txhim kho cov khoom lag luam zoo, kev txaus siab rau cov neeg siv khoom, thiab kev ua tiav tag nrho ntawm koj lub tshuab hluav taws xob.