Kab dav thiab qhov sib txawv specifications rau 2-txheej PCBs

Hauv cov ntawv blog no, peb yuav tham txog cov ntsiab lus tseem ceeb los txiav txim siab thaum xaiv kab dav thiab qhov chaw tshwj xeeb rau 2-txheej PCBs.

Thaum tsim thiab tsim cov ntawv luam tawm Circuit Board (PCBs), ib qho kev txiav txim siab tseem ceeb yog txiav txim siab qhov tsim nyog kab dav thiab qhov sib txawv. Cov kev qhia tshwj xeeb no muaj feem cuam tshuam rau PCB kev ua tau zoo, kev ntseeg tau, thiab kev ua haujlwm.

1. Nkag siab cov hauv paus ntawm kab dav thiab qhov sib nrug:

Ua ntej peb nkag mus rau hauv cov ntsiab lus, nws yog ib qho tseem ceeb kom nkag siab meej txog qhov kab dav thiab qhov sib txawv ntawm qhov tseeb. Linewidth hais txog qhov dav lossis tuab ntawm cov kab tooj liab lossis cov khoom siv hluav taws xob ntawm PCB. Thiab qhov sib nrug yog hais txog qhov kev ncua deb ntawm cov kab no. Cov kev ntsuas no feem ntau teev nyob rau hauv mils lossis millimeters.

2. Xav txog cov yam ntxwv hluav taws xob:

Thawj qhov yuav tsum tau xav txog thaum xaiv cov kab dav thiab qhov sib txawv yog cov yam ntxwv hluav taws xob ntawm PCB. Qhov dav ntawm cov kab mob cuam tshuam rau lub Circuit Court tam sim no-nqa peev xwm thiab impedance. Thicker traces tuaj yeem tswj cov loads tam sim no ntau dua yam tsis ua rau muaj kev cuam tshuam ntau dhau. Tsis tas li ntawd, qhov sib nrug ntawm cov kab mob cuam tshuam rau lub peev xwm ntawm crosstalk thiab electromagnetic cuam tshuam (EMI) ntawm cov kab uas nyob ib sab lossis cov khoom sib txuas. Xav txog qhov Circuit Court theem voltage, teeb liab zaus, thiab suab nrov rhiab heev los txiav txim qhov tsim nyog hluav taws xob specifications.

3. Thaum tshav kub kub dissipation xav txog:

Lwm qhov tseem ceeb uas yuav tau xav txog yog kev tswj xyuas thermal. Kab dav thiab kab sib nrug ua lub luag haujlwm hauv kev ua kom sov kom zoo. Cov kab dav dav pab txhawb kev hloov pauv kom zoo, txo qhov muaj feem ntawm cov khoom ntawm lub rooj tsavxwm overheating. Yog tias koj lub PCB xav tau kev tiv thaiv kev siv hluav taws xob siab lossis ua haujlwm nyob rau hauv qhov chaw kub kub, qhov dav dav thiab qhov sib txawv yuav xav tau.

4. Manufacturing peev:

Thaum xaiv cov kab dav thiab qhov sib txawv, kev tsim muaj peev xwm ntawm PCB cov chaw tsim khoom yuav tsum raug txiav txim siab. Vim cov cuab yeej siv thiab cov txheej txheem txwv, tsis yog txhua tus neeg tsim khoom tuaj yeem ua tiav txoj kab nqaim heev thiab qhov sib nrug nruj. Nws yog ib qho tseem ceeb uas yuav tau sab laj nrog koj cov chaw tsim khoom kom paub meej tias cov kev xaiv tshwj xeeb tau ua raws li lawv lub peev xwm. Kev ua tsis tiav yuav ua rau kev tsim khoom qeeb, nce nqi, lossis txawm tias PCB tsis raug.

5. Teeb liab kev ncaj ncees:

Lub teeb liab kev ncaj ncees yog qhov tseem ceeb hauv kev tsim PCB. Kab dav thiab qhov sib txawv ntawm qhov tshwj xeeb tuaj yeem cuam tshuam rau lub teeb liab kev ncaj ncees ntawm high-speed digital circuits. Piv txwv li, nyob rau hauv high-frequency designs, me me kab dav dav thiab nruj nreem sib nrug yuav tsum tau kom txo tau cov teeb liab poob, impedance mismatch, thiab reflections. Kev simulation kev ncaj ncees thiab kev tsom xam tuaj yeem pab txiav txim siab cov ntsiab lus tsim nyog los tswj kev ua haujlwm zoo.

6. PCB loj thiab ntom:

PCB loj thiab ntom kuj ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab kab dav thiab qhov sib txawv ntawm qhov tshwj xeeb. Cov laug cam me me uas muaj qhov chaw tsawg yuav xav tau cov kab nqaim thiab qhov sib tw nruj dua kom haum rau txhua qhov kev sib txuas tsim nyog. Ntawm qhov tod tes, cov laug cam loj dua nrog qhov chaw tsawg dua tuaj yeem tso cai rau qhov dav thiab qhov sib txawv ntau dua. Nws yog ib qho tseem ceeb kom muaj kev sib npaug ntawm kev ua tiav qhov kev xav tau ua haujlwm thiab ua kom muaj kev tsim khoom hauv qhov chaw muaj board.

7. Cov qauv kev lag luam thiab cov qauv tsim qauv:

Thaum kawg, nws raug nquahu kom xa mus rau cov qauv kev lag luam thiab cov txheej txheem tsim qauv thaum xaiv kab dav thiab qhov sib txawv tshwj xeeb. Cov koom haum xws li IPC (Electronic Industries Council) muab cov qauv tshwj xeeb thiab cov lus qhia uas tuaj yeem ua cov ntaub ntawv muaj txiaj ntsig. Cov ntaub ntawv no muab cov ncauj lus kom ntxaws txog cov kab dav dav thiab qhov sib txawv rau ntau yam kev siv thiab thev naus laus zis.

Hauv cov ntsiab lus

Xaiv txoj kab dav dav thiab qhov sib txawv tshwj xeeb rau 2-txheej PCB yog ib kauj ruam tseem ceeb hauv cov txheej txheem tsim. Txhawm rau ua kom pom kev ua tau zoo, kev ntseeg siab, thiab kev tsim khoom, cov yam ntxwv xws li hluav taws xob cov yam ntxwv, kev xav txog thermal, kev tsim muaj peev xwm, teeb pom kev ncaj ncees, PCB qhov ntev, thiab cov qauv kev lag luam yuav tsum raug txiav txim siab. Los ntawm ua tib zoo soj ntsuam cov xwm txheej no thiab ua haujlwm ze nrog cov chaw tsim khoom PCB, koj tuaj yeem tsim PCB kom raug, ua haujlwm tau zoo, thiab ua tau raws li koj xav tau.