1. Ibhodi PCB imilo kufuneka isondele kwisikwere ngokusemandleni, ii-2 & TImes ziyacetyiswa; 2, 3, kunye neeTImes; 3, … Iinto zokuzilungisa; Kodwa musa ukwenza ibhodi yeYin kunye neYang

2.PCB ibhodi ububanzi ≤260mm (line SIEMENS) okanye ≤300mm (FUJI umgca); Ukuba ukuhanjiswa okuzenzekelayo kuyadingeka, ububanzi bebhodi yePCB kunye neeTImes; Ubude be-125 mm okanye ngaphantsi & TImes; I-180mm.

3. Isakhelo sangaphandle (ukubamba komphetho) webhodi ye-PCB kufuneka yamkele uyilo oluvaliweyo-lokuqinisekisa ukuba ibhodi ye-PCB ayizukukhubazeka emva kokuba ilungisiwe

4. Umgama weziko phakathi kwamacwecwe amancinci kufuneka ulawulwe phakathi kwe-75mm kunye ne-145mm

5. Akufuneki kubekho sixhobo sikhulu okanye isixhobo esandisiweyo kufutshane nendawo yokudibanisa phakathi kwesakhelo sangaphandle kunye nembasa encinci yangaphakathi, naphakathi kwepleyiti encinci kunye nembasa encinci, kunye nomphetho wamacandelo kunye nebhodi yePCB kufuneka ishiywe indawo enkulu kune-0.5mm ukuqinisekisa ukusebenza kwesixhobo sokusika

6. Kuvulwa imingxuma emine yokuma kweekona ezine zesakhelo sebhodi, kunye nomngxuma we-4mm ± 0.01mm; Amandla omngxunya kufuneka abe ngcathu ukuqinisekisa ukuba ayizukuqhekeka kwinkqubo yamacwecwe aphezulu nasezantsi; Ukuma kunye nokuchaneka kwendawo kufanele ukuba kube phezulu, udonga lomngxunya ngaphandle kwe-burr

7. Ibhodi nganye encinci kwibhodi ye-PCB kufuneka ibenemingxunya ebekwe kathathu, i-3≤ ukuvula ≤6mm, imingxunya yokuma ngaphakathi ngaphakathi kwe-1mm ayivumelekanga ukuba icingo okanye i-patch

8. Isimboli yesalathiso sePBB yokubeka indawo yonke kwibhodi kunye nokubeka isixhobo kwindawo entle kufuneka ibekwe kwindawo edibeneyo yeQFP ngenowuthi engaphantsi kwe-0.65mm ngokomgaqo; Ukubeka iisimboli ze-datum kwiibhodi ezincinci ze-PCB kufuneka zisetyenziswe ngababini kwaye zicwangciswe kwi-diagonal yezinto zokubeka.

9. Amacandelo amakhulu kufuneka abeke iiposti okanye imingxunya yokuma, enje nge-I / O ujongano, imakrofoni, ujongano lwebhetri, iswitshi encinci, ujongano lwentloko, iimoto, njl.

10. Xa useta indawo ekubhekiswa kuyo iankile, indawo evulekileyo yokuwelda engaphezulu kwe-1.5mm ihlala ibekelwa bucala ecaleni kweankile