The basic process of Pcb bhodhi dhizaini muSMT chip process inoda kutariswa kwakanyanya. Chimwe chezvinangwa zvikuru zvekugadzirwa kwedunhu schematic kupa netlist yekugadzirwa kwePCB redunhu bhodhi, uye kugadzirira hwaro hwekugadzira bhodhi pcb. Iyo dhizaini maitiro eakawanda-layer PCB edunhu mabhodhi akanyanya kufanana neaya akajairwa PCB mabhodhi. Musiyano ndewekuti kufambiswa kwechiratidzo chepakati chechiratidzo uye kupatsanurwa kwemukati wemagetsi dhizaini kunofanirwa kuitwa. Pazere, dhizaini yeakawanda-layer PCB redunhu bhodhi rakakamurwa kuita anotevera matanho:

1. Kuronga kwebhodhi redunhu kunonyanya kuronga hukuru hwemuviri wepcb board, iyo yekurongedza fomu yechikamu, chikamu chekuisa nzira, uye dhizaini dhizaini, kureva, single-layer board, kaviri-layer board uye multi-layer board.

2. Kushanda parameter setting inonyanya kureva kushanda kwemamiriro ekugadzirisa parameter uye kushanda layer parameter setting. Kuisa pcb nharaunda parameter nenzira kwayo uye zvine musoro kunogona kuunza kurerukirwa kukuru kune dhizaini redunhu bhodhi uye kunatsiridza kushanda zvakanaka.

3. Chikamu chekugadzirisa uye kugadzirisa. Mushure mekunge nguva yazvino yebasa yagadzirira, rondedzero yemambure inogona kuendeswa kunze kwenyika muPCB, kana rondedzero yemambure inogona kutorwa kunze kwenyika zvakananga mudhiyagiramu yechirongwa nekuvandudza pcb. Component marongerwo nekugadzirisa ndiwo anonyanya kukosha mabasa muPCB dhizaini, iyo inobata zvakananga mashandiro akadai seanotevera wiring uye kupatsanurwa kwemukati wemagetsi layer.

4. Mitemo yewaya inogadzikwa, kunyanya kuseta akasiyana siyana edunhu wiring, waya upamhi, parallel waya spacing, chengetedzo kureba pakati pewaya nemapads, uye kuburikidza nehukuru, nezvimwewo, zvisinei kuti ndeipi nzira ye wiring inogamuchirwa, iyo wiring mitemo inokosha. . Nhanho inodiwa, yakanaka wiring mitemo inogona kuve nechokwadi chekuchengetedza redunhu bhodhi routing, uye kusangana nemaitiro ekugadzira zvinodiwa, kuchengetedza mari.

5. Mamwe mabasa ekubatsira, akadai semhangura yekuisa uye kuzadza misodzi, pamwe chete nebasa rekugadzirisa zvinyorwa zvakadai sekubuda kweshumo uye kuchengetedza kudhinda. Mafaira aya anogona kushandiswa kutarisa nekugadzirisa mabhodhi ePCB, uye anogonawo kushandiswa serunyorwa rwezvinhu zvakatengwa.

Component wiring mitemo

1. Dhirowa nzvimbo ye wiring mukati me 1mm kubva kumucheto wePCB board, uye mukati me1mm kumativi egomba rinosungirirwa, wiring inorambidzwa;

2. Tambo yemagetsi inofanira kunge yakafara sezvinobvira uye haifaniri kunge iri pasi pe18mil; upamhi hwemutsara wechiratidzo haufanire kunge huri pasi pe12mil; iyo cpu yekupinza uye inobuda mitsetse haifanirwe kunge iri pasi pe10mil (kana 8mil); mutsara wemutsara haufanire kunge uri pasi pe10mil;

3. Yakajairika via isiri pasi pe30mil;

4. Dual in-line: pad 60mil, aperture 40mil; 1/4W kushorwa: 51 * 55mil (0805 pamusoro pegomo); kana iri mumutsara, pad 62mil, aperture 42mil; electrodeless capacitor: 51 * 55mil (0805 pamusoro pegomo); Kana iri mumutsara, padhi iri 50mil uye aperture iri 28mil;

5. Cherechedza kuti mutsara wemagetsi uye mutsara wepasi unofanirwa kuva wakajeka sezvinobvira, uye mutsara wechiratidzo haufaniri kuvharwa.