Tsika Fr-4 Circuit Board Pcb Board
Mitemo Yekutanga yePCB Layout
1. Kurongeka maererano nemodule yedunhu, matunhu ane hukama anoona basa rimwechete anonzi module, zvikamu zviri mudutu redunhu zvinofanirwa kutora musimboti weiyo iri pedyo yekuisa, uye dhijitari yedhijitari uye analog dunhu rinofanira kuparadzaniswa;
2. Zvikamu nemidziyo zvinofanirwa kuiswa mukati me 1.27mm zvakatenderedza maburi asiri ekukwira senge maburi ekumisikidza uye makomba akajairwa, uye hapana zvikamu zvichaiswa mukati me3.5mm (yeM2.5) uye 4mm (yeM3) yakatenderedza maburi ekumisikidza senge. screws;
3. Dzivisa kuisa vias pazasi zvinoriumba akadai horizontally akaiswa resistors, inductors (plug-ins), uye electrolytic capacitors kudzivisa pfupi matunhu pakati vias uye chikamu goko pashure wave soldering;
4. Nharaunda pakati pekunze kwechikamu uye kumucheto kwebhodhi ndeye 5mm;
5. Kureba pakati pekunze kwepadhi yechikamu chakasungirirwa uye kunze kwechikamu chakatarisana chakasungirirwa chikuru kupfuura 2mm;
6. Metal shell components uye metal parts (shielding boxes, etc.) haigoni kubata zvimwe zvikamu, uye haigoni kuva pedyo nemitsetse yakadhindwa nemapadhi, uye nzvimbo yacho inofanira kuva yakakura kudarika 2mm.Ukuru hwemakomba ekumisikidza, maburi ekuisa anosungirira, makomba ane elliptical uye mamwe masikweya makomba mundiro yakakura kupfuura 3mm kubva kumucheto kweplate;
7. Chinhu chinopisa hachigoni kuva pedyo netambo uye chinhu chinopisa;iyo yepamusoro-heating element inofanira kugoverwa zvakaenzana;
8. Chigadziko chemagetsi chinofanira kurongedzwa zvakapoteredza bhodhi rakadhindwa zvakanyanya sezvinobvira, uye mabheji ebhasi akabatanidzwa kune chigadziko chemagetsi anofanira kurongwa kune rumwe rutivi.Kunyatsotarisirwa kunofanira kutorwa kusaronga zvigadziko zvemagetsi uye mamwe masheji anotengeswa pakati pezvibatanidza, kuitira kuti zvive nyore kusungirirwa kwezvigadziko izvi uye zvibatanidza, uye kugadzira uye kusungirirwa kwetambo dzemagetsi.Kurongeka kwepakati pezvigadziko zvemagetsi uye welding zvinobatanidza zvinofanirwa kutariswa kufambisa kuiswa uye kubviswa kwemapulagi emagetsi;
9. Kurongeka kwezvimwe zvikamu:
Zvese zvikamu zveIC zvakabatanidzwa unilaterally, polarity yezvikamu zvepolar inoratidzwa zvakajeka, uye iyo polarity yekumaka pabhodhi rakadhindwa rimwe chete haifanirwe kupfuura nzira mbiri.Kana nzira mbiri dzichionekwa, nzira mbiri idzi dziri perpendicular kune mumwe nemumwe;
10. Iyo wiring pabhodhi inofanira kuva yakaoma zvakakwana.Kana mutsauko mukuwanda wakakurisa, unofanirwa kuzadzwa ne mesh mhangura foil, uye mesh inofanira kunge yakakura kupfuura 8mil (kana 0.2mm);
11. Panofanira kunge pasina-maburi pamapatch pads, kuitira kuti udzivise kurasikirwa kwesolder paste uye kuita kuti zvikamu zvitengeswe.Mitsetse yakakosha yechiratidzo haibvumidzwe kupfuura pakati pepini yesokisi;
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13. Pamidziyo ine polarity, kutungamira kwekumaka polarity pabhodhi rimwe chete kunofanirwa kuenderana sezvinobvira.
PCB Chikamu Routing Mitemo
1. Munzvimbo iyo nzvimbo ye wiring iri pasi kana yakaenzana ne1mm kubva kumucheto wePCB, uye mukati me1mm kumativi egomba rinoputika, wiring inorambidzwa;
2. Mutsara wemagetsi unofanirwa kuva wakafara sezvinobvira uye haufaniri kuva pasi pe18mil;hupamhi 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 resistor: 51 * 55mil (0805 pamusoro pegomo);kana iri mumutsara, padhi iri 62mil, uye aperture iri 42mil;
Electrodeless capacitor: 51 * 55mil (0805 pamusoro pegomo);kana yavharwa zvakananga, padhi iri 50mil, uye aperture iri 28mil;
5.Cherechedza kuti tambo yemagetsi uye tambo yepasi inofanira kuva yakasvibiswa sezvinobvira, uye tambo yechiratidzo haifaniri kuvharwa.
Factory Show
