1. PCB ibhodi ukwakheka kufanele kusondele isikwele ngangokunokwenzeka, kunconywa ama-2 & TImes; 2, 3, nama-TImes; 3, … Ukulungisa; Kepha ungenzi ibhodi yeYin neYang

2.PCB ibhodi ububanzi ≤260mm (ISIEMENS umugqa) noma ≤300mm (FUJI umugqa); Uma ukuhanjiswa okuzenzakalelayo kuyadingeka, ububanzi bebhodi le-PCB nama-TImes; Ubude be-125 mm noma ngaphansi & TImes; 180mm.

3. Uhlaka lwangaphandle (olunqenqemeni olunqenqemeni) lwebhodi le-PCB kufanele lisebenzise ukwakheka kwe-loop evaliwe ukuqinisekisa ukuthi ibhodi le-PCB ngeke likhubazeke ngemuva kokuthi lilungisiwe

4. Ibanga lesikhungo phakathi kwamapuleti amancane kufanele lilawulwe phakathi kuka-75mm no-145mm

5. Akufanele kube khona idivaysi enkulu noma idivayisi enwetshiwe eduze nendawo yokuxhuma phakathi kohlaka lwangaphandle nocezu lwangaphakathi oluncane, naphakathi kwepuleti elincane nepuleti elincane, nonqenqemeni lwezinto nebhodi le-PCB kufanele kushiywe isikhala esingaphezu kuka-0.5mm ukuqinisekisa ukusebenza okujwayelekile kwethuluzi lokusika

6. Kuvulwa izimbobo ezine zokubeka emakhoneni amane wohlaka lwangaphandle lwebhodi, ngembobo ka-4mm ± 0.01mm; Amandla omgodi kufanele abe ngokulingene ukuze kuqinisekiswe ukuthi ngeke aqhekeke ngenkathi kusetshenziswa amapuleti aphezulu nangaphansi; Imbobo kanye nokunemba kwesikhundla kufanele kube phezulu, udonga lomgodi bushelelezi ngaphandle kwe-burr

7. Ibhodi ngalinye elincane ebhodini le-PCB kufanele libe nezimbobo okungenani ezintathu zokubekwa, imbobo engu-3≤ ≤6mm, izimbobo zokubeka onqenqemeni ngaphakathi kwe-1mm azivunyelwe ukwenza izintambo noma ukugoqa

8. Uphawu oluyinkomba lokuma kwebhodi yonke ye-PCB kanye nokuma kahle kwe-pitch kahle kufanele lubekwe endaweni eqondile ye-QFP ngentambo engaphansi kuka-0.65mm ngokomthetho; Ukubekwa kwezimpawu zezimpawu zamabhodi angaphansi kwe-PCB kufanele kusetshenziswe ngababili futhi kuhlelwe ngokuhlukaniswa kwezinto zokubeka.

Izakhi ezinkulu kufanele zibe nokubeka okuthunyelwe noma izimbobo zokubeka, njenge-interface ye-I / O, imakrofoni, isikhombimsebenzisi sebhethri, iswishi encane, isikhombimsebenzisi sekhanda, imoto, njll.

10. Lapho usetha iphoyinti lesikhombi eliyinkomba, indawo evulekileyo yokuwelda enkulu kuno-1.5mm imvamisa ibekelwa eceleni kwephuzu okusetshenzwa kulengwa kulo