SMD IC soldering cov txheej txheem thiab cov kauj ruam siv hluav taws xob soldering hlau
Nrog rau txoj kev loj hlob ntawm thev naus laus zis, kev sib koom ua ke ntawm nti tau nce siab dua, thiab cov pob khoom tau txais me me thiab me me, uas tau ua rau ntau tus neeg pib ua siab ntev thaum lawv saib SMD ICs. Tuav cov hlau nplaum rau IC uas nws tus pin sib nrug tsis tshaj 0.5mm, koj puas xav tias koj tsis muaj txoj hauv kev pib? Kab lus no yuav piav qhia meej txog cov txheej txheem vuam ntawm cov khoom sib cais nrog pinned SMD ICs, suab zoo tib yam SMD ICs, thiab pob me me (0805, 0603 lossis txawm me dua).
Cov cuab yeej / khoom siv
Cov cuab yeej: tweezers, rosin, soldering hlau, solder
Khoom siv: PCB Circuit Board
1. Vuam ntawm ntom tus pin IC (D12)
Ua ntej, siv tweezers los tuav lub nti thiab ua kom nws nrog cov ntaub qhwv:
Tom qab ntawd tuav lub nti nrog koj tus ntiv tes xoo:
Ua ntej mus rau cov kauj ruam tom ntej, nco ntsoov xyuas kom meej tias cov nti tau ua raws li cov ntaub qhwv, txwv tsis pub nws yuav muaj teeb meem ntau dua kom pom tias cov nti tsis sib haum tom qab cov kauj ruam tom ntej.
Tom ntej no, siv tweezers los khaws ib qho me me ntawm rosin thiab muab tso rau ntawm D12 nti tus pin. Nco ntsoov tias cov rosin siv ntawm no tsis yog cov flux tuab (qhov flux no tsis tuaj yeem kho cov nti):
Cov kauj ruam tom ntej yog siv cov hlau nplaum kom yaj cov rosin. Rosin muaj ob txoj haujlwm ntawm no: ib qho yog kho cov nti ntawm lub rooj tsavxwm PCB, thiab lwm qhov yog los pab solder, haha. Thaum melting rosin, yaj lub rosin kom ntau li ntau tau thiab faib nws tusyees ntawm ib kab ntawm cov ntaub qhwv.
Tom qab ntawd kuj siv rosin kho tus pin ntawm sab nraud ntawm D12. Tom qab cov kauj ruam no, D12 yuav ruaj khov rau ntawm PCB, yog li koj yuav tsum tau xyuas seb lub nti puas haum nrog lub ncoo ua ntej, txwv tsis pub, tos kom txog thaum lub rosin ntawm ob sab siv. Nws tsis yog yooj yim kom tau txais tom qab nws npaj tau.
Tom ntej no, txiav ib daim me me thiab muab tso rau ntawm sab laug ncoo (yog tias koj siv koj sab laug los siv cov hlau soldering, muab tso rau sab xis. Qhov piv txwv no yog raws li cov neeg sab xis, haha). Txoj kab uas hla ntawm lub solder nyob rau hauv daim duab yog 0.5mm. Qhov tseeb, Txoj kab uas hla tsis muaj teeb meem, qhov tseem ceeb yog qhov koj xaiv ntau npaum li cas. Yog tias koj tsis paub meej tias yuav muab ntau npaum li cas, nws raug pom zoo kom muab cov solder tsawg dua ua ntej, thiab yog tias nws tsis txaus, ntxiv cov solder ntxiv.
Yog tias koj muab tso rau ntau lub tin ib zaug, tsis muaj kev daws teeb meem. Yog tias nws tsuas yog me ntsis ntxiv, koj tuaj yeem rub nws sab laug thiab sab xis raws li hauv video nyeem kom faib cov tin ntau sib npaug rau txhua lub ncoo; yog tias muaj ntau ntau, koj tuaj yeem rub nws sab laug thiab sab xis raws li qhia hauv video nyeem. , koj yuav tsum siv lwm txoj kev. Nws raug nquahu kom siv daim kab xev nplaum kom tau tawm ntawm qhov ntau dhau.
Siv ib tug soldering hlau los yaj lub solder, thiab ces rub lub soldering hlau mus rau sab xis raws li qhov chaw sib cuag ntawm tus pin thiab lub ncoo, tag nrho txoj kev mus rau txoj cai tus pin:
Nyob rau hauv txoj kev no, cov pins ntawm ib sab ntawm D12 tau raug soldered, thiab lwm sab tuaj yeem raug soldered siv tib txoj kev.
2. Vuam ntawm tsawg-pin IC (MAX232)
Cov lus qhia saum toj no yog cov txheej txheem vuam ntawm ntom tus pin IC, tab sis tsis txhob siv txoj kev vuam no ntawm tag nrho cov nti ICs. Txoj kev vuam saum toj no xav tias qhov denser cov pins, qhov zoo dua. Yeej, qhov sib nrug ntawm tus pin tsawg dua lossis sib npaug Qhov no yog tib txoj hauv kev rau vuam 0.5mm zaj duab xis, thiab cov haujlwm tshwj xeeb nyob ntawm koj qhov kev xav. Cia peb saib yuav ua li cas solder ib IC nrog ib tug me ntsis loj tus pin spacing, noj MAX232 ntawm lub rooj tsavxwm USB ua piv txwv.
Ua ntej, muab ib co solder rau ntawm lub ncoo nyob ib sab ntawm lub nti ncoo:
Tom qab ntawd siv cov tweezers los kho cov nti nrog lub ncoo. Lub sijhawm no, tus pin nrog tin ntawm lub ncoo yuav raug tsa me ntsis. Nrhiav kev zoo siab thiab ua kom cov nti.
Tom qab ntawd siv cov hlau nplaum los yaj cov nplaum rau ntawm lub ncoo, thiab siv lub zog me ntsis nrog koj cov ntiv tes nias lub nti kom cov nti tuaj yeem txuas nrog rau PCB, thiab tam sim no tus pin yog soldered. Tsis txhob nias heev, tshwj xeeb tshaj yog ua ntej lub solder yog melted kiag li, txwv tsis pub cov pins yuav khoov tawm.
Tom ntej no, solder tus pin ntawm lwm kab pheeb ces kaum kawg ntawm nti los tuav lub nti nyob rau hauv qhov chaw:
Lwm qhov yuav tsum tau ua yog solder tus pins ntxiv ntawm MAX232 ib qho los ntawm ib qho. Ua li no, MAX232 tau raug soldered. Tsis tas yuav ntxuav lub rooj tsavxwm lub sijhawm no vim peb tsis tau siv rosin (qhov tseeb, cov hlau nplaum muaj qee qhov flux, uas tej zaum yuav yog rosin, haha).
3. Vuam ntawm cov pob me me discrete Cheebtsam
Cov pob me me discrete Cheebtsam, uas yog, resistors thiab capacitors. Ua qauv qhia ntawm no yog soldering lub capacitor hauv pob 0603. Ua ntej siv me ntsis solder rau ib qho ntawm cov ntaub qhwv uas cov khoom yuav tsum tau soldered:
Tom qab ntawd siv cov tweezers los tuav lub capacitor, thiab siv cov hlau soldering nyob rau hauv koj sab tes xis kom yaj lub solder tsuas yog kov. Lub sijhawm no, siv cov tweezers kom "xa" lub capacitor mus rau hauv lub ncoo me ntsis, thiab tom qab ntawd solder nws:
Cov kauj ruam tom ntej yog solder lwm tus pin, kom cov pob me me tuaj yeem ua rau lub rooj tsavxwm zoo nkauj.
