1. Usati waputira, shandisa flux padhi uye uibate nesimbi yakanyungudutswa kudzivirira kuti padhi irege kuvharwa zvakanaka kana kuti oxidized, zvichiita kuti kuomerwe mukutengesa.Kazhinji, chip hachidi kurapwa.
2. Shandisa tweezers kunyatsoisa PQFP chip paPCB board, uchichenjerera kuti usakuvadza mapini.Gadzirisana nemapedhi uye ita shuwa kuti chip yakaiswa munzira kwayo.Gadzirisa tembiricha yesimbi inotengeswa kusvika pa300 degrees celsius, nyudza muromo wesimbi inotengeswa ine shoma shoma, shandisa mudziyo kudzvanya pasi pane yakarongwa chip, uye wedzera diki yekuyerera kune maviri diagonal. mapini, ramba uchidzvanya pasi pachip uye tengesa mapini maviri ane diagonally positioned kuti chip igadzirwe uye isakwanise kufamba.Mushure mekutengesa makona akatarisana, tarisazve nzvimbo ye chip kuti ienderane.Kana zvichidikanwa, inogona kugadziriswa kana kubviswa uye kurongeka zvakare paPCB board.
3. Paunenge uchitanga kutengesa mapini ose, wedzera solder kumucheto wesimbi yesimbi uye gadzira mapini ose ne flux kuitira kuti pini dzive dzakanyorova.Bata muromo wesimbi inotengeswa kusvika kumagumo kwepini yega yega pachip kusvika waona solder ichiyerera mupini.Paunenge uchiputira, chengetedza muromo wesimbi yesimbi yakatarisana nepini iri kutengeswa kudzivirira kupindirana nekuda kwekunyanya kunyungudika.
4.Mushure mekutengesa mapini ese, sora mapini ese ne flux kuchenesa solder.Bvisa solder yakawandisa painoda kubvisa chero zvipfupi uye zvakaputika.Chekupedzisira, shandisa tweezers kutarisa kana paine manyepo soldering.Mushure mekuongororwa kwapera, bvisa iyo flux kubva pabhodhi redunhu.Nyora brashi yakaoma-bristle mudoro uye uipukute zvakanyatsoenderana nehutungamiri hwepini kusvikira iyo inoyerera ichinyangarika.
5. SMD resistor-capacitor zvikamu zviri nyore kutengesa.Iwe unogona kutanga waisa tini pane solder joint, wozoisa imwe mugumo wechikamu, shandisa tweezers kusungirira chikamu, uye mushure mekutengesa imwe mugumo, tarisa kana yakaiswa zvakanaka;Kana yakabatana, weld imwe mugumo.
Panyaya yekurongeka, kana saizi yebhodhi redunhu yakakura kwazvo, kunyangwe iyo welding iri nyore kudzora, mitsetse yakadhindwa ichave yakareba, iyo impedance ichawedzera, iyo anti-ruzha kugona ichaderera, uye mutengo uchawedzera;kana iri diki, kupisa kwekushisa kuchaderera, iyo welding ichave yakaoma kudzora, uye mitsetse yakatarisana ichaonekwa nyore.Kupindirana, senge electromagnetic kupindira kubva kumabhodhi edunhu.Naizvozvo, PCB bhodhi dhizaini inofanirwa kuvandudzwa:
(1) Pfupisa kuwirirana pakati pe-high-frequency components uye kuderedza kupindira kweEMI.
(2) Zvikamu zvine huremu hunorema (zvakadai sezvinopfuura 20g) zvinofanirwa kugadziriswa nemabhuraketi uye zvino welded.
(3) Nyaya dzekupisa kupisa dzinofanirwa kutariswa nekuda kwekupisa zvikamu kudzivirira kukanganisa uye kugadzirisa zvakare nekuda kwehukuru ΔT pane chikamu chepamusoro.Thermal sensitive components zvinofanira kuchengetwa kure nezvinopisa.
(4) Zvikamu zvinofanirwa kurongeka zvakaenzana sezvinobvira, izvo zvisiri kungonaka chete asiwo zviri nyore kupinza, uye zvakakodzerwa nekugadzirwa kwehuwandu.Dunhu redunhu rakagadzirwa kuita rectangle 4:3 (inodiwa).Usave nekungoerekana wachinja muhupamhi hwewaya kudzivirira discontinuities wiring.Apo bhodhi redunhu rinopisa kwenguva yakareba, foil yemhangura iri nyore kuwedzera uye kudonha.Nokudaro, kushandiswa kwenzvimbo huru dzemhangura foil kunofanira kudziviswa.