The basic process ofPCB redunhu bhodhidhizaini muSMT chip processing inoda kutariswa kwakanyanya.Chimwe chezvinangwa zvikuru zvedunhu schematic dhizaini kupa network tafura yePCB redunhu bhodhi dhizaini uye kugadzirira hwaro hwePCB bhodhi dhizaini.Iyo dhizaini maitiro eakawanda-layer PCB redunhu bhodhi rakanyanya kufanana nematanho ekugadzira eyakajairwa PCB board.Musiyano ndewekuti wiring yepakati yechiratidzo chemukati uye kupatsanurwa kwemukati wemagetsi layer inoda kuitwa.Kutorwa pamwechete, dhizaini yeakawanda-layer PCB redunhu bhodhi rakafanana.Yakakamurwa mumatanho anotevera:
1. Kuronga bhodhi redunhu kunonyanya kusanganisira kuronga saizi yePCB board, fomu yekurongedza yezvikamu, nzira yekuisa chikamu, uye chimiro chebhodhi, kureva, single-layer board, double-layer board, uye multi-layer. mapuranga.
2. Kushanda parameter setting, inonyanya kureva kushanda kwemamiriro ekugadzirisa parameter uye kushanda layer parameter setting.Kurongeka uye kunonzwisisika kwePCB nharaunda paramita kunogona kuunza kurerukirwa kukuru kudhizaini bhodhi dhizaini nekuvandudza kushanda zvakanaka.
3. Chikamu chekugadzirisa uye kugadzirisa.Mushure mokunge basa rekutanga rapera, tafura yetiweki inogona kuendeswa kune pcb, kana tafura yetiweki inogona kutorwa kunze zvakananga mumufananidzo wechirongwa nekuvandudza pcb.Kurongeka kwechikamu uye kugadzirisa mabasa akakosha muPCB dhizaini, ayo anokanganisa zvakananga mashandiro anotevera senge wiring uye yemukati magetsi layer segmentation.
4. Wiring rule settings inonyanya kuseta zvakasiyana-siyana zvedunhu wiring, zvakaita sehupamhi hwewaya, parallel line spacing, chengetedzo kureba pakati pewaya nemapadhi, uye kuburikidza nehukuru.Hazvina mhosva kuti ndeipi nzira ye wiring inogamuchirwa, mitemo ye wiring inodiwa.Nhanho yakakosha, yakanaka wiring mitemo inogona kuve nechokwadi chekuchengetedza redunhu bhodhi routing, kuenderana nekugadzirwa kwemaitiro zvinodiwa, uye kuchengetedza mutengo.
5. Mamwe mabasa anobatsira, akadai semhangura yemhangura uye kuzadza misodzi, pamwe chete nekugadzirisa zvinyorwa zvakadai sekubuda kweshumo uye kuchengetedza kudhinda.Mafaira aya anogona kushandiswa kutarisa nekugadzirisa mabhodhi ePCB, uye anogonawo kushandiswa serunyorwa rwezvinhu zvakatengwa.
Component routing mitemo
1. Hapana wiring inobvumirwa mukati menharaunda ≤1mm kubva kumucheto wePCB board uye mukati me1mm yakapoteredza gomba rinosungirirwa;
2. Mutsara wemagetsi unofanirwa kuva wakafara sezvinobvira uye haufaniri kuva pasi pe18mil;hupamhi hwemutsara wechiratidzo haufanire kunge huri pasi pe12mil;iyo CPU yekupinda uye mitsara yekubuda haifanirwe kunge iri pasi pe10mil (kana 8mil);mutsara wemutsara haufanire kunge uri pasi pe10mil;
3. Normal via maburi haasi asingasviki 30mil;
4. Dual in-line plug: pad 60mil, aperture 40mil;1/4W resistor: 51 * 55mil (0805 pamusoro pegomo);kana yabaiwa, pad 62mil, aperture 42mil;electrodeless capacitor: 51 * 55mil (0805 pamusoro pegomo);Kana yaiswa zvakananga, padhi i50mil uye gomba dhayamita i28mil;
5. Chenjerera kune iyo mitsetse yemagetsi uye tambo dzepasi dzinofanira kunge dzakasvibiswa sezvinobvira, uye mitsetse yechiratidzo haifaniri kuendeswa muzvishwe.