Mfundo ndondomeko yaPulogalamu ya PCBkapangidwe ka SMT chip processing kumafuna chidwi chapadera. Chimodzi mwa zolinga zazikulu za dongosolo dera schematic ndi kupereka tebulo maukonde kwa PCB dera bolodi kamangidwe ndi kukonzekera maziko a PCB bolodi kamangidwe. Mapangidwe a bolodi yamagulu osiyanasiyana a PCB ndi ofanana ndi masitepe a board wamba a PCB. Kusiyanitsa ndiko kuti mawaya a chizindikiro chapakati ndi kugawanika kwa magetsi amkati ayenera kuchitika. Kutengedwa palimodzi, mapangidwe a bolodi yamagulu osiyanasiyana a PCB ndi ofanana. Agawidwa m'njira zotsatirazi:
1. Kukonzekera kwa komiti yozungulira kumaphatikizapo kukonzekera kukula kwa bolodi la PCB, mawonekedwe oyikapo a zigawozo, njira yokhazikitsira chigawocho, ndi dongosolo la bolodi, ndiko kuti, matabwa amtundu umodzi, matabwa awiri, ndi magulu ambiri. matabwa.
2. Kukonzekera kwa parameter yogwira ntchito, makamaka kumatanthawuza kukhazikitsidwa kwa malo ogwirira ntchito ndi malo ogwira ntchito. Kukonzekera koyenera komanso koyenera kwa magawo achilengedwe a PCB kumatha kubweretsa kuphweka kwa ma board board ndikuwongolera magwiridwe antchito.
3. Kapangidwe kagawo ndikusintha. Pambuyo ntchito koyambirira anamaliza, tebulo maukonde akhoza kunja mu pcb, kapena tebulo maukonde akhoza kunja mwachindunji mu chithunzi schematic ndi kasinthidwe pcb. Kapangidwe kagawo ndikusintha ndi ntchito zofunika kwambiri pakupanga kwa PCB, zomwe zimakhudza mwachindunji magwiridwe antchito monga mawaya ndi magawo amagetsi amkati.
4. Kuyika kwa malamulo a mawaya makamaka kumayika zosiyana siyana za mawaya ozungulira, monga m'lifupi mwa waya, mizere yofanana, mtunda wa chitetezo pakati pa mawaya ndi mapepala, ndi kukula kwake. Ziribe kanthu njira yolumikizira ma waya yomwe imatsatiridwa, malamulo opangira ma waya ndi ofunikira. Gawo lofunika kwambiri, malamulo abwino amawaya amatha kuonetsetsa chitetezo chamayendedwe a board board, kutsatira zofunikira pakupangira, ndikupulumutsa ndalama.
5. Ntchito zina zothandizira, monga zokutira zamkuwa ndi kudzaza misozi, komanso kukonza zolemba monga kutulutsa lipoti ndikusunga kusindikiza. owona awa angagwiritsidwe ntchito kufufuza ndi kusintha matabwa PCB dera, ndipo angagwiritsidwenso ntchito monga mndandanda wa zigawo anagula.
Malamulo oyendetsera magawo
1. Palibe mawaya omwe amaloledwa mkati mwa dera ≤1mm kuchokera pamphepete mwa bolodi la PCB ndi mkati mwa 1mm kuzungulira dzenje lokwera;
2. Chingwe chamagetsi chiyenera kukhala chachikulu momwe chingathere ndipo sichiyenera kuchepera 18mil; m'lifupi la mzere wa chizindikiro sikuyenera kuchepera 12mil; mizere yolowera ndi kutulutsa kwa CPU sayenera kuchepera 10mil (kapena 8mil); kutalika kwa mizere sikuyenera kuchepera 10mil;
3. Normal kudzera mabowo si osachepera 30mil;
4. Pulagi wapawiri-mu-line: pedi 60mil, pobowo 40mil; 1/4W resistor: 51 * 55mil (0805 pamwamba phiri); ikalumikizidwa, pad 62mil, pobowo 42mil; electrodeless capacitor: 51 * 55mil (0805 pamwamba phiri); Akalowetsedwa mwachindunji, pad ndi 50mil ndi dzenje awiri ndi 28mil;
5. Samalani kuti mizere yamagetsi ndi mawaya apansi ayenera kukhala ozungulira momwe angathere, ndipo mizere yazizindikiro sayenera kuyendetsedwa mu malupu.