Kev txawj ntse thiab kev ceev faj hauv kev siv hluav taws xob tiag tiag:
1) Connector
Teem qhov kub ntawm qhov chaw nres tsheb rau 370 degrees, ntxig cov khoom sib xyaw rau hauv PCB qhov sib thooj, ua rau cov khoom sib txuas ntawm cov kab txuas txuas mus rau PCB ncoo kom deb li deb tau, lub taub hau hlau yog ntawm 45-degree kaum sab xis mus rau PCB, thiab lub taub hau hlau yog tawm tsam cov khoom siv pins thiab lub ncoo Preheat, thiab tom qab ntawd pib pub cov hlau nplaum. Thaum lub solder hlau melts, qhov ceev ntawm tin noj yuav tsum tau mastered. Thaum tag nrho lub ncoo yog yaj, nres thiab tshem tawm cov tin hlau. Thaum kawg, txiav tawm cov pins tshaj nrog kab pheeb ces kaum pliers.
2) SMD tivthaiv vuam
Lub soldering ntawm SOP8 thiab SOP16 yog qhov yooj yim. Teem lub nti nrog PCB ncoo, kho ib tus pin ua ntej, thiab tom qab paub meej tias lwm tus pins kuj tau ua raws li cov ntaub ntawv sib txuas, solder cov pins ntxiv nyob rau hauv lem. Drag welding kuj ua tau.
Tab sis rau pob welding ntawm LQFP48, nws yog tsis yooj yim sua rau welding pins ib tug los ntawm ib tug, thiab cov efficiency yog tsawg heev. Koj tuaj yeem kho cov nti nrog PCB tus pins ua ntej, kho ib tus pin ua ntej, thiab tom qab ntawd kho tus kab pheeb ces kaum. Tom qab fixation tiav lawm, thov ib tug tsim nyog tus nqi ntawm flux rau cov nyob ib puag ncig pins. Tom qab ntawd, siv lub taub hau ntawm cov hlau soldering los ua cov hlua khi. Tom qab rub lub tshuab ua tiav, siv lub tshuab hluav taws xob ntsuas hluav taws xob los kuaj xyuas qhov zoo thiab paub meej tias tsis muaj cov hlau lead.
Yog tias koj siv cov hlau soldering rau solder QFN -24, nws muaj teeb meem ntau dua, thiab koj yuav tsum siv rab phom kub lossis lub tshuab cua sov los ua cov chips no.
MHP30 mini cua sov platform yog siv hauv cov yeeb yaj kiab. Vim tias tsis muaj stencil, cov tshuaj txhuam hniav tuaj yeem kis tau tus kheej ntawm tes. Tom qab txheej txheej tiav lawm, ua kom cov nti nrog PCB ncoo, teeb qhov kub ntawm lub tshav kub mus rau 190 degrees, thiab solder lub PCB. Teem txoj haujlwm nrog lub tshuab cua sov thiab pib cua sov. Koj tuaj yeem pom tias cov tshuaj txhuam hniav maj mam pib yaj, thiab cov txheej txheem yog decompressed heev. Tom qab cov nplaum nplaum yog yaj tag, maj mam tshem tawm PCB, cia nws sawv ntsug thiab tos kom txias txias. Tom qab qhov txias tiav lawm, siv lub tshuab ntsuas hluav taws xob los kuaj xyuas qhov zoo ntawm soldering, pom tias muaj ntau tshaj qhov sib txuas nrog lub solder, lub sij hawm no siv cov hluav taws xob soldering hlau tshem tawm cov solder ntau dhau, paub meej tias tsis muaj cov hlau lead. , thiab cov soldering tiav.
3) Tshwj xeeb PCB soldering
Rau cov tub ntxhais kawm thiab cov phooj ywg, universal board vuam txuj ci tseem ceeb heev hauv kev sib tw. Qhov zoo ntawm vuam yuav cuam tshuam rau kev nce qib ntawm kev sib tw thiab txawm tias qhov ua haujlwm zoo. Koj tuaj yeem saib cov yeeb yaj kiab saum toj no hais txog kev vuam ntawm lub rooj tsavxwm universal.
Thaum kawg, cia peb tham txog tshwj xeeb PCB vuam, uas txhais tau hais tias aluminium substrate. Aluminium substrate yog hlau-raws li tooj liab clad laminate nrog zoo tshav kub dissipation muaj nuj nqi. Feem ntau, ib lub vaj huam sib luag yog tsim los ntawm peb txheej, uas yog txheej txheej hauv Circuit Court (tooj liab ntawv), txheej insulating thiab hlau puag txheej, feem ntau hauv cov khoom siv teeb pom kev zoo LED. Vim qhov zoo thermal conductivity ntawm aluminium substrate, nws yog ib qho nyuaj rau solder nrog ib tug hluav taws xob soldering hlau. Feem ntau, phau ntawv welding ntawm aluminium substrate yuav tsum tau siv lub txaj kub los pab cov hluav taws xob soldering hlau los yog ncaj qha siv lub rooj cua sov rau phau ntawv reflow soldering, thiab lub soldering kub yuav tsum tsis txhob siab dhau. Lub sijhawm soldering yog Tsis pub dhau 20 vib nas this.
