1. Ua ntej tso vuam, thov kom nws nrog cov hlau solding los tiv thaiv cov ntaub qhwv los ntawm kev ua tsis zoo tanned lossis oxidized, ua rau muaj teeb meem nyuaj. Feem ntau, lub nti tsis tas yuav tsum tau kho.
2. Siv tweezers kom ua tib zoo muab cov PQFP nti rau ntawm Pcb Board, ceev faj kom tsis txhob puas cov pins. Dlhos nws nrog cov ntaub qhwv thiab nco ntsoov cov nti muab tso rau hauv qhov tseeb taw qhia. Kho qhov ntsuas kub ntawm cov hlau solding rau ntau dua 300 degrees Celsius, tseem nias tus lej me me, thiab muab cov kab xev me me rau cov pins kom cov nti kom cov nti kom cov nti kom muaj zog thiab txav tsis tau. Tom qab soldering qhov rov qab fab, recheck lub nti txoj hauj lwm rau kev sib ncag. Yog tias tsim nyog, nws tuaj yeem hloov kho lossis tshem tawm thiab rov ua haujlwm rau ntawm Pcb Board.
3. Thaum pib tsoo tag nrho cov pins, ntxiv cov cam rau qhov ntxeev ntawm solding hlau thiab lub tsho tiv no tag nrho cov pins nrog flux kom cov pins noo. Kov lub ntsis ntawm soldering hlau mus txog rau thaum xaus ntawm txhua tus pin ntawm lub nti kom txog thaum koj pom cov yas ntws mus rau tus lej PIN. Thaum vuam, kom cov lus qhia ntawm cov hlau soldering rau tus pin yog soldened los tiv thaiv kev sib tshooj vim yog cov soldering ntau dhau.
4. Tom qab soldering tag nrho cov pins, soak tag nrho cov pins nrog flux los ntxuav cov cam. So tawm ntau dhau ntawm qhov chaw uas xav tau kom tshem tawm cov kev luv thiab ntau dhau. Thaum kawg, siv tweezers tshawb xyuas seb puas muaj cov soldering tsis tseeb. Tom qab kev tshuaj xyuas tiav tiav, tshem tawm cov flux los ntawm Circuit Court Board. Poob ib qho nyuaj-txhuam txhuam hauv cawv thiab so nws ua tib zoo raws cov kev taw qhia ntawm pins kom txog thaum flux ploj lawm.
5. SMD Deistor-capacitor Cheebtsam yog qhov yooj yim rau kev sib tsoo. Koj tuaj yeem ua thawj zaug tso tawm ntawm kev sib koom ua ke, tom qab ntawd muab ib qho kawg ntawm cov khoom siv, thiab tom qab soldering ib kawg, xyuas nws tau muab tso kom raug; Yog tias nws yog ib qho zuj zus, weld lwm kawg.
Nyob rau hauv cov nqe lus ntawm kev teeb tsa, thaum qhov loj me ntawm cov Circuit Court board loj dhau lawm, txawm tias kev sau cov ntawv sau yuav nce ntxiv, cov kev tawm tsam yuav txo qis, thiab tus nqi yuav nce ntxiv; Yog tias nws yog me me heev, cov cua sov dissipation yuav qis dua, lub vuam yuav nyuaj rau kev tswj hwm, thiab cov kab uas nyob ib sab tau yooj yim tshwm sim. Kev cuam tshuam nrog cov kev sib cuam tshuam tau sib txheeb, xws li kev cuam tshuam hluav taws xob hluav taws xob los ntawm cov laug cam hluav taws xob. Yog li, PCB board tsim yuav tsum yog qhov zoo tshaj plaws:
(1) Ua kom luv luv ntawm cov kev sib txuas ntawm cov khoom siv siab heev thiab txo cov kev cuam tshuam emi.
(2) Cheebtsam nrog hnyav hnyav (xws li ntau tshaj 20G) yuav tsum tau tsau nrog cov nkhaus thiab muab welded.
(3) Cov teeb meem kub dissipation yuav tsum raug txiav txim siab rau cov khoom siv cua sov kom tiv thaiv tsis xws luag thiab ua haujlwm vim muaj loj loj ntawm cov khoom sib txawv. Thermal rhiab rhiab cov khoom yuav tsum tau ceev cia ntawm cov khoom cua sov.
(4) Cov Cheebtsam yuav tsum tau npaj ua ke li ua tau, uas tsis yog tsuas zoo nkauj xwb tab sis kuj yooj yim rau weld, thiab yog haum rau huab hwm coj ntau lawm. Cov Circuit Court Board yog tsim los ua 4: 3 duab plaub (nyiam dua). Tsis txhob muaj kev hloov pauv sai rau hauv cov hlau dav kom tsis txhob txuas cov hluav taws xob tsis tu ncua. Thaum cov Circuit Court board yog rhuab ntev, tus tooj liab ntawv ci yog qhov yooj yim nthuav dav thiab poob tawm. Yog li ntawd, kev siv cov cheeb tsam loj ntawm tooj liab ntawv muab yuav tsum zam.