Copper thickness thiab tuag-casting txheej txheem rau 4L PCB

Yuav ua li cas xaiv qhov tsim nyog nyob rau hauv-board tooj liab thickness thiab tooj liab foil tuag-casting txheej txheem rau 4-txheej PCB

Thaum tsim thiab tsim cov ntawv luam tawm Circuit Board (PCBs), muaj ntau yam los xav txog. Ib qho tseem ceeb yog xaiv qhov tsim nyog nyob rau hauv-board tooj liab tuab thiab tooj liab foil tuag-casting txheej txheem, tshwj xeeb tshaj yog thaum cuam tshuam nrog 4-txheej PCBs. Hauv tsab ntawv blog no, peb yuav tham txog vim li cas cov kev xaiv no tseem ceeb thiab muab qee cov lus qhia rau koj txog kev txiav txim siab zoo tshaj plaws.

Qhov tseem ceeb ntawm tooj liab thickness nyob rau hauv lub rooj tsavxwm

PCB's in-board tooj liab thickness plays lub luag haujlwm tseem ceeb hauv nws qhov kev ua tau zoo thiab kev ntseeg tau. Nws cuam tshuam ncaj qha rau lub rooj tsavxwm muaj peev xwm ua tau zoo hluav taws xob thiab tswj cov cua kub dissipation. Xaiv qhov raug tooj liab tuab yog qhov tseem ceeb los xyuas kom meej tias PCB tuaj yeem ua raws li qhov xav tau tam sim no yam tsis muaj cua sov ntau lossis qhov hluav taws xob poob.

Thaum 4-txheej PCBs koom nrog, qhov xwm txheej yuav nyuaj dua. Cov khaubncaws sab nraud povtseg ntxiv hauv PCB nce kev tsim qauv tsis yooj yim, thiab tooj liab tuab yuav tsum tau ua tib zoo saib xyuas kom muaj kev ua haujlwm zoo. Tab sis nws yuav tsum nco ntsoov tias cov tuab yuav tsum raug xaiv raws li cov kev cai tshwj xeeb ntawm PCB es tsis yog qhov muag tsis pom kev ua raws li kev lag luam tshwj xeeb.

Yam yuav tsum tau xav txog thaum xaiv hauv-Board Copper Thickness

1. Lub peev xwm nqa tam sim no:Ib qho tseem ceeb ntawm kev txiav txim siab thaum xaiv tooj liab thickness yog lub peev xwm nqa tam sim no ntawm kab. Cov qauv tsim hluav taws xob nrog cov khoom siv hluav taws xob siab lossis cov ntawv thov uas xav tau kev ua haujlwm siab tam sim no yuav tsum siv cov kab tooj liab tuab dua kom tsis txhob muaj cua sov ntau dhau.

2. Thermal tswj:Kev siv hluav taws xob zoo yog qhov tseem ceeb rau PCB lub neej thiab kev ntseeg tau. Thicker tooj liab txheej pab txhim kho cov cua kub dissipation los ntawm kev muab thaj chaw loj dua rau kev hloov hluav taws xob. Yog li ntawd, yog tias koj daim ntawv thov koom nrog cov khoom uas tsim kom muaj cua sov ntau, nws raug nquahu kom xaiv cov txheej tooj liab tuab dua.

3. impedance tswj:Rau qee yam kev siv, xws li kev siv hluav taws xob siab lossis xov tooj cua zaus, kev tswj xyuas qhov impedance yog qhov tseem ceeb. Nyob rau hauv cov ntaub ntawv no, nyob rau hauv-board tooj liab thickness yuav tsum tau ua tib zoo xaiv kom tswj tau qhov xav tau impedance tus nqi. Thicker tooj liab txheej pab ua kom tiav impedance tswj.

Xaiv txoj cai tooj liab foil tuag-casting txheej txheem

Ntxiv nrog rau tooj liab thickness, tooj liab foil tuag casting txheej txheem yog lwm yam tseem ceeb los xav txog. Cov txheej txheem tuag-casting txiav txim siab qhov zoo thiab sib xws ntawm txheej tooj liab ntawm PCB. Nov yog qee yam uas yuav tsum nco ntsoov thaum xaiv txoj cai tuag casting txheej txheem:

1. Nto tiav:Cov txheej txheem tuag-casting yuav tsum ua kom lub ntsej muag du thiab zoo ib yam. Qhov no yog ib qho tseem ceeb heev los xyuas kom meej zoo solderability thiab txhim khu kev qha hluav taws xob sib txuas. Kev ua tiav tsis zoo tuaj yeem ua rau muaj teeb meem xws li kev sib koom ua ke tsis ua haujlwm lossis tsis txaus conductivity.

2. Adhesion:Cov txheej tooj liab yuav tsum tau txuas nrog rau PCB substrate kom tsis txhob delamination lossis poob tawm thaum ua haujlwm. Cov txheej txheem tuag-casting yuav tsum xyuas kom zoo adhesion ntawm tooj liab thiab cov khoom siv substrate (feem ntau FR-4) kom ntseeg tau tias muaj kev ntseeg siab thiab siv tau ntev ntawm PCB.

3. Kev sib raug zoo:Kev sib xyaw ntawm tooj liab tuab thoob plaws tag nrho PCB yog qhov tseem ceeb rau kev ua kom muaj hluav taws xob zoo ib yam thiab kev tswj xyuas impedance. Cov txheej txheem tuag casting yuav tsum muab cov txiaj ntsig zoo ib yam thiab txo qhov kev hloov pauv ntawm tooj liab thickness.

Nrhiav qhov sib npaug

Striking txoj cai sib npaug ntawm kev ua tau zoo, kev ntseeg siab thiab tus nqi yog qhov tseem ceeb thaum xaiv qhov tsim nyog rau hauv-board tooj liab thickness thiab tooj liab foil tuag-casting txheej txheem. Thicker tooj liab txheej thiab ntau dua cov txheej txheem tuag-casting tuaj yeem txhim kho kev ua tau zoo, tab sis kuj nce nqi tsim khoom. Nws raug nquahu kom sab laj nrog tus kws tshaj lij PCB cov chaw tsim khoom lossis cov kws tshaj lij txhawm rau txiav txim siab qhov zoo tshaj plaws tooj liab tuab thiab cov txheej txheem tuag-casting uas yuav ua tau zoo tshaj plaws rau koj cov kev xav tau tshwj xeeb thiab kev txwv nyiaj txiag.

nyob rau hauv xaus

Xaiv qhov tseeb hauv-board tooj liab thickness thiab tooj liab ntawv hlau tuag-casting txheej txheem yog ib qho tseem ceeb los xyuas kom meej lub sij hawm ntev kev ua tau zoo, kev ntseeg tau thiab functionality ntawm 4-txheej PCB. Ua tib zoo xav txog yam xws li lub peev xwm nqa tam sim no, kev tswj xyuas thermal, thiab kev tswj xyuas impedance yog qhov tseem ceeb rau kev xaiv kom raug. Tsis tas li ntawd, xaiv cov txheej txheem tuag-casting uas muab qhov chaw du, adhesion zoo, thiab cov txiaj ntsig zoo ib yam yuav ua kom zoo dua qub ntawm PCB. Nco ntsoov, txhua tus qauv PCB yog qhov tshwj xeeb thiab nrhiav qhov zoo tshaj plaws sib npaug ntawm cov kev xav tau thiab kev tsim ua tau zoo yog tus yuam sij rau kev ua tiav.