Tus nqi tsim khoom ntawm lub rooj tsavxwm Circuit Court tau yog qhov kev txhawj xeeb tshaj plaws ntawm txhua tus engineers hluav taws xob, lawv xav paub txog cov txiaj ntsig siab tshaj plaws ntawm lawv cov khoom nrog tus nqi qis tshaj.Txawm li cas los xij, dab tsi cuam tshuam rau cov nqi tsim khoom ntawm lub rooj tsavxwm?Ntawm no, koj yuav paub txhua yam ua tau uas yuav ntxiv koj tus nqi PCB.
Qhov laj thawj tseem ceeb cuam tshuam tus nqi ntawm 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 qhov tseem ceeb, tswj hwm los ntawm ntau 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 complexity
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 siab los tsim cov txheej txheem ntau PCB laminate.
Tus nqi ntawm cov khoom yuav tsum tau pf PCB nws tus kheej
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 los yog puv vias thiab seb lawv puas yog tooj liab them—cov txheej txheem ntxiv yuav nce nqi.
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 ua kom cov nqi nce.
7. Tolerances — nruj tolerances yog kim.
Lwm yam uas cuam tshuam tus nqi ntawm PCB
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. NPCB thickness.
2.Ntau yam kev kho deg.
3. laus daim npog qhov ncauj.
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.
PCBA yuav muab cov lus qhia zoo tshaj plaws rau koj kom pab koj txo koj cov nqi ntawm PCB boards,
Post lub sij hawm: Jun-21-2021