1. PCB saizi
【Kumashure Tsanangudzo】Kukura kwePCBinoganhurirwa nekugona kwemagetsi kugadzira mutsara wemidziyo.Naizvozvo, saizi yePCB yakakodzera inofanirwa kutariswa mukugadzirwa kwechigadzirwa system scheme.
(1) Iyo yakakura PCB saizi iyo SMT michina inogona kukwira inotorwa kubva pachiyero chiyero chePCB sheet, mazhinji acho ari 20 ″ × 24 ″, kureva, 508mm × 610mm (njanji yakafara)
(2) Saizi yakakurudzirwa saizi inofananidzwa yemudziyo wega wega mutsetse wekugadzira weSMT, unobatsira mukugadzirwa kwechishandiso chega chega uye kubvisa mabhodhoro emidziyo.
(3) Kune maPCB madiki-saizi, inofanirwa kugadzirwa sechinhu chekumisikidza kuvandudza kugona kwekugadzira kweyese mutsara wekugadzira.
【Design zvinodiwa】
(1) Kazhinji, ukuru hwepamusoro hwePCB hunofanira kuganhurirwa mukati meiyo 460mm × 610mm.
(2) Saizi inokurudzirwa inosvika (200~250)mm×(250~350)mm, uye chiyero chinofanira kuva <2.
(3) Kune PCB ine saizi ye "125mm×125mm", inofanirwa kugadzirwa saizi yakakodzera.
2. PCB chimiro
[Kumashure Tsanangudzo] Midziyo yekugadzira yeSMT inoshandisa njanji kutakura maPCB, uye maPCB ane maumbirwo asina kujairika haagone kutakurwa, kunyanya maPCB ane notchi pamakona.
【Design zvinodiwa】
(1) Chimiro chePCB chinofanira kunge chiri chikwere chenguva dzose chine makona akatenderedzwa.
(2) Kuti ive nechokwadi chekugadzikana kwemaitiro ekutapurirana, nzira yekumisikidza inofanirwa kutariswa kushandura iyo isina kuumbwa PCB kuita yakajairwa sikweya chimiro, kunyanya mapeji epakona anofanirwa kuzadzwa kudzivirira mafungu ekusongedzera shaya panguva yekufambisa.Medium kadhi bhodhi.
(3) Pamabhodhi eSMT akachena, mapundu anobvumirwa, asi saizi yegomba inofanira kunge iri pasi pechikamu chimwe chete muzvitatu cheurefu hwedivi.Kune avo vanodarika chinodiwa ichi, rutivi rwekugadzira hurongwa hunofanira kuzadzwa.
(4) Iyo chamfering dhizaini yechigunwe chegoridhe haingodiwa kugadzira chamfering padivi rekuisa, asiwo kugadzira (1 ~ 1.5) × 45 ° chamfering pamativi ese eplug-in bhodhi kufambisa kuisa.
3. Divi rekutumira
[Kumashure Tsanangudzo] Saizi yemupendero wekutakura inoenderana nezvinodiwa zveiyo njanji yekufambisa yemidziyo.Pamichina yekudhinda, michina yekuisa uye reflow solder vira, mupendero wekutakura unowanzo kudiwa kuti upfuure 3.5mm.
【Design zvinodiwa】
(1) Kuti uderedze deformation yePCB panguva yekutengesa, iyo yakareba yedivi kutungamira kweiyo isiri-kuisa PCB inowanzoshandiswa senzira yekufambisa;nokuda kwekuiswa, iyo yakareba yedivi nzira inofanirawo kushandiswa senzira yekufambisa.
(2) Kazhinji, mativi maviri ePCB kana kuisirwa nzira yekufambisa anoshandiswa sedivi rekutapurirana.Hupamhi hudiki hwedivi rekutapurirana i5.0mm.Panofanira kunge pasina zvikamu kana majoini ekutengesa kumberi uye kumashure kwedivi rekutapurirana.
(3) Kudivi risiri rekutapurirana, hapana chinorambidzwa pamidziyo yeSMT, uye zvakanakisa kuchengetedza 2.5mm chikamu chinorambidzwa nzvimbo.
4. Gomba rekuisa
[Kumashure Tsanangudzo] Mazhinji maitiro akadai sekumisikidza kugadzirisa, kuungana, uye kuyedzwa kunoda chaiyo chinzvimbo chePCB.Naizvozvo, maburi ekumisikidza anowanzo kudiwa kuti agadziriswe.
【Design zvinodiwa】
(1) PaPCB yega yega, maburi maviri ekumisikidza anofanira kugadzirwa, rimwe rakagadzirwa sedenderedzwa, uye rimwe rakagadzirwa semugero wakareba.Iyo yekutanga inoshandiswa pakumisikidza uye yekupedzisira inoshandiswa kutungamira.
Iko hakuna chakakosha chinodiwa kune yekumisikidza aperture, inogona kugadzirwa zvinoenderana neyakaomeswa fekitori yako, uye madhayamita anokurudzirwa ari 2.4mm uye 3.0mm.
Makomba ekumisa anofanira kunge asina-metallized maburi.Kana PCB iri PCB yakaroverwa, gomba rekumisikidza rinofanira kugadzirwa neplate yeburi kuti riwedzere kuoma.
Hurefu hwegomba rekutungamira kazhinji kaviri dhayamita.
Pakati pegomba rekuisa panofanirwa kunge riri kure ne5.0mm kubva kudivi rekutapurirana, uye maburi maviri ekumisa anofanira kunge ari kure sezvinobvira.Zvinokurudzirwa kuronga iwo pamakona akatarisana ePCB.
(2) Kune maPCB akasanganiswa (PCBAs ane plug-ins akaiswa, nzvimbo yemakomba ekumisikidza inofanirwa kunge yakafanana neyekumberi neshure, kuitira kuti dhizaini yemidziyo inogona kugovaniswa pakati pemberi neshure, senge screw. bhuraketi rezasi rinogona zvakare kushandiswa kune plug-in tray.
5. Kuisa zviratidzo
[Kumashure Tsanangudzo] Michina yemazuva ano yekuisa, michina yekuprinda, michina yekuongorora yemaziso (AOI), solder paste inspection equipment (SPI), nezvimwewo zvese zvinoshandisa optical positioning systems.Naizvozvo, optical chinzvimbo zviratidzo zvinofanirwa kugadzirwa paPCB.
【Design zvinodiwa】
(1) Zviratidzo zvekumisikidza zvakakamurwa kuita zviratidzo zvepasi rose (Global Fiducial) uye zviratidzo zvenzvimbo (Local Fiducial)
Fiducial).Iyo yekutanga inoshandiswa pakumisikidzwa kwebhodhi rose, uye iyo yekupedzisira inoshandiswa kumisikidza yekumisikidza mabhodhi madiki kana akatsetseka-pitch zvikamu.
(2) Optical positioning zviratidzo zvinogona kugadzirwa semakwere, madhaimani, madenderedzwa, michinjikwa, matsime, nezvimwewo, ane hurefu hwe2.0mm.Kazhinji, zvinokurudzirwa kugadzira denderedzwa yemhangura tsanangudzo yemuenzaniso weØ1.0m.Tichifunga nezvekusiyana pakati pemuvara wezvinhu uye zvakatipoteredza, nzvimbo isina-soldering 1mm yakakura kudarika chiratidzo chekuisa maziso yakachengetwa, uye hapana mavara anobvumirwa mairi.Zvitatu pabhodhi rimwechete Kuvapo kana kusavapo kwemhangura yemhangura mumucheka wemukati kunofanira kunge kwakafanana pasi pechiratidzo.
(3) Pamusoro pePCB pamusoro nezvikamu zveSMD, zvinokurudzirwa kuronga zviratidzo zvitatu zvekuisa maziso pakona yebhodhi yekumisikidza stereo yePCB (mapoinzi matatu anoona ndege, uye ukobvu hweiyo solder paste inogona kuonekwa) .
(4) Pakumisikidza, pamusoro pekuve nezviratidzo zvitatu zvekuisa maziso pabhodhi rese, zviri nani kugadzira maviri kana matatu ekumisikidza optical chinzvimbo zviratidzo pamakona akatarisana ega yega unit board.
(5) Pamidziyo yakadai seQFP ine chinhambwe chinotungamira che ≤0.5mm uye BGA ine chinhambwe chepakati che ≤0.8mm, zviratidzo zvenzvimbo yemaziso zvinofanirwa kuiswa padiagonal kuitira kunyatsomira.
(6) Kana paine zvinhu zvakaiswa pamativi ese, divi rimwe nerimwe rinofanira kunge riine zviratidzo zvekumira.
(7) Kana pasina gomba rekuisa paPCB, pakati pechiratidzo chekumisikidza chemaziso chinofanira kunge chiri chinhambwe chinodarika 6.5mm kubva padivi rekutapurirana kwePCB.Kana paine buri rekumisikidza paPCB, pakati pechiratidzo chekumisikidza chemaziso chinofanira kugadzirwa padivi pegomba rekumisikidza pedyo nepakati pePCB.
Nguva yekutumira: Kubvumbi-08-2023