1. Pele u cheselletsa, sebelisa flux holim'a pad 'me ue phekole ka tšepe ea soldering ho thibela pad hore e se ke ea kenngoa hampe kapa e na le oxidized, e bakang bothata ba ho solder.Ka kakaretso, chip ha e hloke ho phekoloa.
2. Sebelisa li-tweezers ho beha ka hloko chip ea PQFP holim'a boto ea PCB, u hlokomele hore u se ke ua senya lithapo.E tsamaisane le liphahlo 'me u netefatse hore chip e behiloe ka tsela e nepahetseng.Fetola mocheso oa tšepe ea tšepe ho feta likhato tse 300 tsa Celsius, inela ntlha ea tšepe ea solder ka solder e nyane, sebelisa sesebelisoa ho hatella chip e tsamaellanang, 'me u kenye phallo e nyane ho tse peli tse diagonal. Pins, o ntse o Tobetsa chip ebe o rekisa lithakhisa tse peli tse emetsoeng ka mahlakoreng a mabeli e le hore chip e tiee 'me e se khone ho sisinyeha.Ka mor'a ho kopanya likhutlo tse fapaneng, hlahloba hape boemo ba chip bakeng sa ho lumellana.Haeba ho hlokahala, e ka fetoloa kapa ea tlosoa 'me ea boela ea amahanngoa le boto ea PCB.
3. Ha u qala ho solder lithapo tsohle, eketsa solder ntlheng ea tšepe ea solder ebe u roala lithapo tsohle ka flux ho boloka lithapo li le mongobo.Tšoara ntlha ea tšepe ea solder ho ea qetellong ea pinana e 'ngoe le e' ngoe holim'a chip ho fihlela u bona solder e phalla ka pineng.Ha o tjheseletsa, boloka ntlha ya tshepe ya solder e bapile le phini e ntseng e rekisoa ho thibela ho kopana ka lebaka la ho soasoa ho feteletseng.
4.Kamora ho kopanya lithapo tsohle, soak lithapo tsohle ka flux ho hloekisa solder.Hlakola solder e feteletseng moo ho hlokahalang ho tlosa li-shorts le li-overlaps.Qetellong, sebelisa li-tweezers ho hlahloba hore na ho na le soldering ea bohata.Ka mor'a hore tlhahlobo e phethoe, tlosa phallo ho tloha boto ea potoloho.Kenya brush e thata ka joala 'me ue hlakole ka hloko ho latela tataiso ea lithapo ho fihlela phallo e nyamela.
5. Likarolo tsa SMD resistor-capacitor li batla li le bonolo ho solder.U ka qala ka ho kenya thini holim'a motsoako oa solder, ebe u beha ntlha e le 'ngoe ea motsoako, sebelisa li-tweezers ho koala motsoako,' me ka mor'a ho kopanya ntlha e le 'ngoe, hlahloba hore na e behiloe ka nepo;Haeba e hokahane, weld ntlha e 'ngoe.
Mabapi le moralo, ha boholo ba boto ea potoloho bo le boholo haholo, le hoja ho chesoa ho le bonolo ho laola, mela e hatisitsoeng e tla ba nako e telele, ho thibela ho eketseha, matla a ho thibela lerata a tla fokotseha, 'me litšenyehelo li tla eketseha;haeba e le nyane haholo, mocheso oa mocheso o tla fokotseha, ho tla ba thata ho laola welding, 'me mela e haufi e tla hlaha habonolo.Ho kena-kenana le batho ka bobeli, joalo ka tšitiso ea motlakase ho tsoa libotong tsa potoloho.Ka hona, moralo oa boto ea PCB o tlameha ho ntlafatsoa:
(1) Fokotsa likamano pakeng tsa likarolo tse phahameng-frequency le ho fokotsa tšitiso ea EMI.
(2) Lisebelisoa tse nang le boima bo boima (tse kang ho feta 20g) li lokela ho ts'oaroa ka li-brackets ebe li kenngoa.
(3) Litaba tsa ho senya mocheso li lokela ho nkoa bakeng sa lisebelisoa tsa ho futhumatsa ho thibela mefokolo le ho sebetsa hape ka lebaka la ΔT e kholo holim'a karolo ea karolo.Likarolo tse utloang mocheso li lokela ho behoa hole le mehloli ea mocheso.
4Boto ea potoloho e etselitsoe ho ba 4: 3 rectangle (e ratoang).Se ke oa ba le liphetoho tsa tšohanyetso bophara ba terata ho qoba li-discontinuities tsa lithapo.Ha boto ea potoloho e futhumala ka nako e telele, foil ea koporo e bonolo ho atolosa le ho oa.Ka hona, tšebeliso ea libaka tse kholo tsa foil ea koporo e lokela ho qojoa.