Hauv kev tsim pcb, peb feem ntau xav tias qhov saum npoo ntawm pcb yuav tsum tau them nrog tooj liab? Qhov no tiag tiag nyob ntawm qhov xwm txheej, ua ntej peb yuav tsum nkag siab qhov zoo thiab qhov tsis zoo ntawm qhov chaw tooj liab.

Ua ntej peb saib cov txiaj ntsig ntawm tooj liab txheej:

1. Cov nplaim tooj liab tuaj yeem muab kev tiv thaiv kev tiv thaiv ntxiv thiab kev tawm suab nrov rau lub teeb liab sab hauv;
2. tuaj yeem txhim kho lub peev xwm ua kom sov ntawm pcb
3. Nyob rau hauv cov txheej txheem ntau lawm PCB, txuag tus nqi ntawm corrosive agent;
4. Tsis txhob PCB warping deformation tshwm sim los ntawm PCB tshaj reflow kev nyuaj siab tshwm sim los ntawm tooj liab foil imbalance

Qhov sib thooj txheej txheej ntawm tooj liab kuj muaj qhov tsis zoo sib xws:

1, lub dav hlau npog sab nrauv yuav raug sib cais los ntawm cov khoom siv saum npoo thiab cov kab teeb liab tawg, yog tias muaj cov ntawv ci tooj liab tsis zoo (tshwj xeeb tshaj yog tias nyias nyias nyias tooj liab), nws yuav dhau los ua tus kav hlau txais xov, ua rau muaj teeb meem EMI;

Rau hom tooj liab no peb tuaj yeem khawb los ntawm kev ua haujlwm ntawm software

2.Yog hais tias tus pin tivthaiv yog them nrog tooj liab thiab tag nrho kev sib txuas, nws yuav ua rau kub poob sai heev, ua rau muaj teeb meem hauv vuam thiab kho vuam, yog li peb feem ntau siv cov tooj liab nteg txoj kev hla kev sib txuas rau cov khoom sib txuas.

Yog li ntawd, kev soj ntsuam ntawm seb qhov saum npoo yog coated nrog tooj liab muaj cov lus xaus hauv qab no:

1, PCB tsim rau ob txheej ntawm lub rooj tsavxwm, tooj liab txheej yog qhov tsim nyog heev, feem ntau hauv pem teb hauv qab, txheej saum toj kawg nkaus ntawm cov khoom siv tseem ceeb thiab taug kev cov kab hluav taws xob thiab cov teeb liab.
2, rau siab impedance Circuit Court, analog circuit (analog-to-digital conversion circuit, switching mode power supply conversion circuit), tooj liab txheej yog ib qho kev xyaum zoo.
3.For multi-layer board high-speed digital circuits nrog ua tiav cov khoom siv hluav taws xob thiab lub dav hlau hauv av, nco ntsoov tias qhov no yog hais txog kev kub ceev digital circuits, thiab tooj liab txheej hauv txheej txheej yuav tsis coj cov txiaj ntsig zoo.
4.Rau kev siv ntau txheej board digital Circuit Court, txheej txheej sab hauv muaj lub zog ua tiav, lub dav hlau hauv av, tooj liab txheej hauv qhov chaw tsis tuaj yeem txo qhov crosstalk, tab sis ze rau ntawm cov tooj liab dhau heev yuav hloov qhov impedance ntawm microstrip kis kab, tsis tu ncua tooj liab kuj yuav ua rau muaj kev cuam tshuam tsis zoo rau cov kab sib kis impedance discontinuity.
5.Rau multilayer boards, qhov kev ncua deb ntawm microstrip kab thiab lub dav hlau siv yog <10mil, txoj kev rov qab ntawm lub teeb liab raug xaiv ncaj qha mus rau lub dav hlau siv nyob rau hauv qab cov teeb liab kab, es tsis yog nyob ib ncig ntawm daim ntawv tooj liab, vim nws qis impedance. Rau ob-txheej daim hlau nrog qhov kev ncua deb ntawm 60mil ntawm lub teeb liab kab thiab lub dav hlau siv, ib qho kev ua tiav tooj liab wrapper raws tag nrho cov teeb liab kab txoj kev tuaj yeem txo cov suab nrov.
6.Rau ntau txheej boards, yog tias muaj ntau cov khoom siv saum npoo thiab thaiv, tsis txhob siv tooj liab kom tsis txhob muaj cov tooj liab ntau dhau. Yog tias cov khoom siv saum npoo thiab cov teeb liab siab ceev tsawg dua, lub rooj tsavxwm yog qhov khoob, txhawm rau ua cov txheej txheem PCB, koj tuaj yeem xaiv nteg tooj liab rau ntawm qhov chaw, tab sis ua tib zoo saib rau PCB tsim ntawm tooj liab thiab high-ceev teeb liab kab tsawg kawg yog 4W lossis ntau dua, kom tsis txhob hloov cov yam ntxwv impedance ntawm cov teeb liab kab.