Inqubo eyisisekelo ye PCB ibhodi ukuklama ekusetshenzisweni kwe-chip ye-SMT kudinga ukunakwa okukhethekile. Enye yezinjongo eziyinhloko zokuklanywa kwe-circuit schematic ukuhlinzeka ngohlu lwenethiwekhi lokuklanywa kwebhodi lesifunda le-PCB, nokulungiselela isisekelo sokuklanywa kwebhodi le-pcb. Inqubo yokuklama yamabhodi esekethe e-PCB enezingqimba eziningi iyafana naleyo yamabhodi e-PCB ajwayelekile. Umehluko wukuthi umzila wesendlalelo sesignali esimaphakathi kanye nokuhlukaniswa kwesendlalelo sikagesi sangaphakathi kudingeka kwenziwe. Sekukonke, ukwakheka kwebhodi lesifunda le-PCB elinezingqimba eziningi lihlukaniswe ngokuyisisekelo ngezinyathelo ezilandelayo:

1. Ukuhlelwa kwebhodi lesifunda ngokuyinhloko ukuhlela ubukhulu bomzimba bebhodi le-pcb, ifomu lokupakisha lengxenye, indlela yokufaka ingxenye, kanye nesakhiwo sesendlalelo, okungukuthi, ibhodi elilodwa-layer, ibhodi elinezingqimba ezimbili kanye ibhodi elinezingqimba eziningi.

2. Ukulungiselelwa kwepharamitha yokusebenza ikakhulukazi kubhekisela ekusethweni kwepharamitha yendawo yokusebenza kanye nokusetha ipharamitha yesendlalelo sokusebenza. Ukusetha imingcele yemvelo ye-pcb ngendlela efanele nangendlela enengqondo kungaletha ukunethezeka okukhulu ekwakhiweni kwebhodi lesifunda futhi kuthuthukise ukusebenza kahle komsebenzi.

3. Isakhiwo nokulungiswa kwengxenye. Ngemuva kokuthi isikhathi samanje somsebenzi sesilungile, uhlu lwenetha lungangeniswa ku-pcb, noma uhlu lwenetha lungangeniswa ngqo kumdwebo wohlelo ngokubuyekeza i-pcb. Ukuhlelwa kwengxenye nokulungiswa kuyimisebenzi ebaluleke kakhulu ekwakhiweni kwe-PCB, ethinta ngokuqondile ukusebenza okufana nezintambo ezilandelanayo kanye nokwehlukaniswa kwesendlalelo sikagesi sangaphakathi.

4. Imithetho yezintambo isethiwe, ikakhulukazi ukusetha ukucaciswa okuhlukahlukene kwezintambo zesifunda, ububanzi bezintambo, ukuhlukaniswa kwezintambo ezifanayo, ibanga lokuphepha phakathi kwezintambo namaphedi, nangosayizi, njll., kungakhathaliseki ukuthi iyiphi indlela yokufaka izintambo eyamukelwayo, imithetho yezintambo ibalulekile. . Isinyathelo esibalulekile, imithetho emihle yezintambo ingaqinisekisa ukuphepha komzila webhodi lesifunda, futhi ihlangabezane nezidingo zenqubo yokukhiqiza, ukonga izindleko.

5. Eminye imisebenzi yokusiza, njengokufaka ithusi nokugcwaliswa kwezinyembezi, kanye nomsebenzi wokucubungula amadokhumenti njengokuphuma kombiko kanye nokulondoloza ukuphrinta. Lawa mafayela angasetshenziswa ukuhlola nokuguqula amabhodi esekethe e-PCB, futhi angasetshenziswa njengohlu lwezingxenye ezithengiwe.

Imithetho ye-wiring yengxenye

1. Dweba indawo yezintambo ngaphakathi kwe-1mm ukusuka onqenqemeni lwebhodi le-PCB, futhi ngaphakathi kuka-1mm eduze kwembobo yokufaka, izintambo azivunyelwe;

2. Intambo kagesi kufanele ibe banzi ngangokunokwenzeka futhi akufanele ibe ngaphansi kuka-18mil; ububanzi bomugqa wesignali akufanele bube ngaphansi kuka-12mil; imigqa yokufaka ye-cpu neyokukhipha akufanele ibe ngaphansi kuka-10mil (noma u-8mil); isikhala somugqa akufanele sibe ngaphansi kuka-10mil;

3. Isilinganiso esijwayelekile singekho ngaphansi kuka-30mil;

4. I-Dual in-line: iphedi engu-60mil, indawo yokungena engu-40mil; Ukumelana kwe-1/4W: 51 * 55mil (i-0805 surface mount); uma ulayini, iphedi engu-62mil, indawo yokungena engu-42mil; i-electrodeless capacitor: 51 * 55mil (i-0805 surface mount); Uma uku-line, iphedi ingu-50mil kanti indawo yokuvula ingu-28mil;

5. Qaphela ukuthi intambo yamandla kanye nentambo yaphansi kufanele ibe yi-radial ngangokunokwenzeka, futhi ulayini wesiginali akufanele uboshwe.