Xyoo no, cuam tshuam los ntawm kev kis tus kabmob tshiab, cov khoom siv ntawm PCB cov ntaub ntawv tsis txaus, thiab cov nqi ntawm cov khoom siv raw kuj tseem nce.PCB ntsig txog kev lag luam kuj tau cuam tshuam loj heev.Rau qhov kev vam meej ntawm qhov project, engineers yuav tsum xav txog kev txhim kho cov qauv tsim kom txo tau cov nqi PCB.Tom qab ntawd, dab tsi yuav cuam tshuam rau PCB cov nqi tsim khoom?
Cov yam tseem ceeb cuam tshuam rau koj tus nqi PCB
1. PCB loj thiab ntau
Nws yog ib qho yooj yim to taub yuav ua li cas loj thiab ntau npaum li cas yuav cuam tshuam tus nqi ntawm PCB, qhov loj thiab kom muaj nuj nqis yuav noj ntau cov ntaub ntawv.
2. Cov khoom siv substrate siv
Qee cov ntaub ntawv tshwj xeeb siv hauv qee qhov chaw ua haujlwm tshwj xeeb yuav kim dua li cov khoom siv ib txwm siv.fabricating Printed Circuit Boards nyob ntawm ntau yam kev thov-raws li, tswj xyuas feem ntau ntawm zaus thiab ceev ntawm kev ua haujlwm, thiab qhov siab tshaj plaws ua haujlwm kub.
3. Cov txheej txheem
ntau cov khaubncaws sab nraud povtseg txhais ua cov nqi ntxiv vim yog cov kauj ruam ntau lawm, cov khoom siv ntau dua, thiab sijhawm ntau lawm ntxiv.
4. PCB nyuaj
PCB complexity nyob ntawm tus naj npawb ntawm cov khaubncaws sab nraud povtseg thiab tus naj npawb ntawm vias ntawm txhua txheej, raws li qhov no txhais cov variations ntawm txheej uas lub vias pib thiab nres rau, yuav tsum tau ntau ntau lamination thiab drilling cov kauj ruam nyob rau hauv lub PCB manufacturing txheej txheem.Cov neeg tsim khoom txhais cov txheej txheem lamination raws li nias ob txheej tooj liab thiab dielectrics nyob nruab nrab ntawm cov khaubncaws sab nraud povtseg uas nyob ib sab siv cov cua sov thiab lub siab los tsim ntau txheej PCB laminate.
Yuav ua li cas optimize koj tus tsim?
1. Taug qab thiab qhov sib txawv geometry- thinner yog kim dua.
2. Kev tswj ntawm impedance- cov txheej txheem ntxiv cov txheej txheem nce nqi.
3. Qhov loj thiab suav ntawm qhov- ntau qhov thiab cov kab me me ua rau tus nqi nce siab.
4. Plugged lossis puv vias thiab seb lawv puas yog tooj liab them- cov txheej txheem ntxiv ua rau cov nqi nce ntxiv.
5. Copper thickness nyob rau hauv cov khaubncaws sab nraud povtseg - siab dua thickness txhais tau tias cov nqi ntau dua.
6. Nto tiav, siv cov kub thiab nws cov tuab- Cov khoom siv ntxiv thiab cov txheej txheem cov txheej txheem nce nqi.
7. Tolerances- nruj dua tolerances yog kim.
Lwm yam cuam tshuam rau koj tus nqi.
Cov nqi me me no suav nrog qeb III yog nyob ntawm ob qho tib si, tus tsim khoom thiab daim ntawv thov ntawm PCB.Lawv feem ntau koom nrog:
1. PCB thickness
2. Ntau yam kev kho deg
3. Solder masking
4. Zaj dab neeg luam tawm
5. chav kawm PCB (IPC Class II / III thiab lwm yam)
6. PCB contour- tshwj xeeb rau z-axis routing
7. Sab los yog ntug plating
PHILIFAST yuav muab cov lus qhia zoo tshaj plaws rau koj los pab koj txo koj cov nqi ntawm PCB boards.
Post lub sij hawm: Lub Xya hli ntuj-14-2021