1. PCB kukula
【Kufotokozera Kwachiyambi】Kukula kwaPCBndi malire ndi kuthekera kwa zida zamagetsi zopangira zida zamagetsi.Chifukwa chake, kukula koyenera kwa PCB kuyenera kuganiziridwa pamapangidwe a dongosolo lazinthu.
(1) Kukula kwakukulu kwa PCB komwe zida za SMT zitha kukwera zimachokera ku kukula kwa pepala la PCB, ambiri omwe ndi 20 ″ × 24 ″, ndiko kuti, 508mm×610mm (m'lifupi mwanjanji)
(2) Kukula kovomerezeka ndi kukula kofananira kwa chipangizo chilichonse mumzere wopangira wa SMT, womwe umathandizira kupanga bwino kwa chipangizo chilichonse ndikuchotsa zopinga za zida.
(3) Kwa ma PCB ang'onoang'ono, amayenera kupangidwa ngati chokakamiza kuti apititse patsogolo kupanga bwino kwa mzere wonse wopanga.
【Zofunikira pakupanga】
(1) Kawirikawiri, kukula kwakukulu kwa PCB kuyenera kukhala kochepa mkati mwa 460mm × 610mm.
(2) Kukula kovomerezeka ndi (200 ~ 250)mm×(250~350)mm, ndipo gawolo liyenera kukhala <2.
(3) Kwa PCB yokhala ndi kukula kwa "125mm×125mm", iyenera kupangidwa kuti ikhale yoyenera.
2. PCB mawonekedwe
[Mafotokozedwe Pambuyo] Zipangizo zopangira ma SMT zimagwiritsa ntchito njanji zowongolera kunyamula ma PCB, ndipo ma PCB okhala ndi mawonekedwe osakhazikika sangathe kunyamulidwa, makamaka ma PCB okhala ndi ma notche pamakona.
【Zofunikira pakupanga】
(1) Maonekedwe a PCB ayenera kukhala masikweya wokhazikika okhala ndi ngodya zozungulira.
(2) Pofuna kuonetsetsa kukhazikika kwa njira yopatsirana, njira yoyikapo iyenera kuganiziridwa kuti isinthe PCB yosasinthika kukhala mawonekedwe amtundu wokhazikika, makamaka mipata yapangodya iyenera kudzazidwa kuti zisagwetsedwe ndi nsagwada zowotchera panthawi yopatsirana.Medium khadi board.
(3) Kwa matabwa oyera a SMT, mipata imaloledwa, koma kukula kwa kusiyana kuyenera kukhala osachepera gawo limodzi mwa magawo atatu a kutalika kwa mbali.Kwa iwo omwe apitilira izi, mbali yopangira mapangidwe iyenera kudzazidwa.
(4) Mapangidwe ochititsa chidwi a chala chagolide sikuti amangofunika kupanga chamfering kumbali yoyikapo, komanso kupanga (1 ~ 1.5) × 45 ° chamfering mbali zonse za pulagi-mu bolodi kuti athandizire kuyika.
3. Mbali yotumizira
[Kufotokozera Kumbuyo] Kukula kwa m'mphepete mwake kumadalira zofunikira za njanji yotumizira zida.Pamakina osindikizira, makina oyika ndi ng'anjo zowotchera reflow, m'mphepete mwake pamafunika kupitilira 3.5mm.
【Zofunikira pakupanga】
(1) Pofuna kuchepetsa mapindikidwe a PCB pa soldering, mbali yaitali malangizo a PCB sanali kuikidwa amagwiritsidwa ntchito monga njira kufala;pakuyika, mbali yayitali iyenera kugwiritsidwanso ntchito ngati njira yotumizira.
(2) Nthawi zambiri, mbali ziwiri za PCB kapena njira zopatsirana zimagwiritsidwa ntchito ngati mbali yotumizira.Kutalika kochepa kwa mbali yotumizira ndi 5.0mm.Sipayenera kukhala zigawo kapena zolumikizira zogulitsira kutsogolo ndi kumbuyo kwa mbali yotumizira.
(3) Kumbali yosatumiza, palibe choletsa pazida za SMT, ndipo ndi bwino kusungitsa gawo loletsa gawo la 2.5mm.
4. Poyika dzenje
[Mafotokozedwe Akumbuyo] Njira zambiri monga kukonza zoyika, kusonkhanitsa, ndi kuyesa zimafuna kuyikika kolondola kwa PCB.Chifukwa chake, mabowo oyimilira nthawi zambiri amafunikira kuti apangidwe.
【Zofunikira pakupanga】
(1) Pa PCB iliyonse, mabowo awiri oyika ayenera kupangidwa, imodzi idapangidwa ngati bwalo, ndipo inayo idapangidwa ngati poyambira yayitali.Yoyamba imagwiritsidwa ntchito poikirapo ndipo yomalizayo imagwiritsidwa ntchito pakuwongolera.
Palibe chofunikira chapadera pa kabowo koyikirako, chitha kupangidwa molingana ndi zomwe fakitale yanu, ndipo ma diameter ovomerezeka ndi 2.4mm ndi 3.0mm.
Mabowo oyika azikhala opanda zitsulo.Ngati PCB ndi PCB yokhomeredwa, dzenje loyikapo liyenera kupangidwa ndi mbale ya dzenje kuti liwongolere kusasunthika.
Kutalika kwa dzenje la kalozera nthawi zambiri kumakhala kuwirikiza kawiri.
Pakatikati pa dzenje loyikirapo liyenera kukhala lopitilira 5.0mm kutali ndi mbali yotumizira, ndipo mabowo awiri oyika azikhala kutali momwe angathere.Ndi bwino kukonza iwo pa ngodya zosiyana za PCB.
(2) Pakuti PCBs wosanganiza (PCBAs ndi pulagi-ins anaika, udindo wa mabowo malo ayenera kukhala ofanana ndi kutsogolo ndi kumbuyo, kuti kamangidwe ka tooling akhoza kugawidwa pakati kutsogolo ndi kumbuyo, monga wononga pansi bulaketi angagwiritsidwenso ntchito pulagi-mu thireyi.
5. Zizindikiro zoyika
[Malongosoledwe Akumbuyo] Makina amakono oyika, makina osindikizira, zida zowunikira zowunikira (AOI), zida zowunika za solder paste (SPI), ndi zina zonse zimagwiritsa ntchito makina owonera.Chifukwa chake, zizindikilo zoyang'anira ziyenera kupangidwa pa PCB.
【Zofunikira pakupanga】
(1) Zizindikiro zoikika zimagawidwa kukhala zizindikilo zapadziko lonse lapansi (Global Fiducial) ndi zizindikilo zakumaloko (Local Fiducial)
Fiducial).Yoyamba imagwiritsidwa ntchito poyika bolodi lonse, ndipo yomalizayo imagwiritsidwa ntchito poyika ma board ang'onoang'ono kapena zigawo zomveka bwino.
(2) Zizindikiro zowoneka bwino zitha kupangidwa ngati mabwalo, ma diamondi, mabwalo, mitanda, zitsime, ndi zina, ndi kutalika kwa 2.0mm.Nthawi zambiri, tikulimbikitsidwa kupanga mawonekedwe ozungulira amkuwa a Ø1.0m.Poganizira kusiyana pakati pa mtundu wa zinthu ndi chilengedwe, malo osagulitsa 1mm aakulu kuposa chizindikiro cha kuwala kosungirako amasungidwa, ndipo palibe zilembo zomwe zimaloledwa mmenemo.Atatu pa bolodi lomwelo Kukhalapo kapena kusowa kwa zojambulazo zamkuwa muzitsulo zamkati ziyenera kukhala zofanana pansi pa chizindikiro.
(3) Pa PCB pamwamba ndi zigawo za SMD, tikulimbikitsidwa kuti tikonze zizindikiro zitatu zoyang'ana pakona ya bolodi kuti zikhazikitse stereo ya PCB (mfundo zitatu zimatsimikizira ndege, ndipo makulidwe a phala la solder amatha kudziwika) .
(4) Pakuyika, kuwonjezera pa kukhala ndi zizindikilo zitatu zoyang'ana pa bolodi lonse, ndikwabwino kupanga zilembo ziwiri kapena zitatu zoyang'ana pamakona a gulu lililonse.
(5) Pazida monga QFP zokhala ndi mtunda wotsogola wa ≤0.5mm ndi BGA wokhala ndi mtunda wapakati wa ≤0.8mm, zizindikiro zapamalo zowoneka bwino ziyenera kukhazikitsidwa pa diagonal kuti zikhazikike bwino.
(6) Ngati pali zida zokwezedwa mbali zonse ziwiri, mbali iliyonse iyenera kukhala ndi zizindikiro zowonekera.
(7) Ngati palibe bowo pa PCB, pakati pa chizindikiro cha kuwala chiyenera kukhala choposa 6.5mm kutali ndi mbali yotumizira ya PCB.Ngati pali bowo pa PCB, pakati pa chizindikiro choyang'ana choyang'ana chiyenera kupangidwa pambali ya dzenje pafupi ndi pakati pa PCB.
Nthawi yotumiza: Apr-08-2023