Rau feem coob ntawm cov khoom siv hluav taws xob, lawv muaj polarity, los yog cov pins tsis tuaj yeem ua tsis ncaj ncees lawm. Piv txwv li, thaum lub electrolytic capacitor yog welded rov qab, nws yuav tawg thaum lub zog. Feem ntau hais lus, thaum siv cov tshuab pub mis tsis siv neeg los sib sau cov khoom siv hluav taws xob hauv Circuit Court, yuav tsis muaj teeb meem ntawm cov khoom tsis raug. Txawm li cas los xij, vim muaj kev txwv ntawm cov tuam txhab tsim khoom thiab cov yam ntxwv ntawm cov khoom, tsis yog txhua yam khoom tuaj yeem raug txiav los yog muab tso rau. Kev siv phau ntawv tso yog yuav tsum tau rau ntau qhov chaw mounted transformers, connectors, encapsulated integrated circuits, thiab lwm yam. Cov khoom siv no tseem yuav muaj teeb meem ntawm kev sib dhos yuam kev. Feem ntau, kev kho yog nqa tawm manually, thiab qhov txuas no tseem ua rau muaj teeb meem ntawm kev rov qab vuam. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau piav qhia txog txoj hauv kev ntawm cov khoom siv thiab cov kev sib raug zoo ntawm cov ntaub qhwv thiab cov ntawv lo lo lo ntxhuav ntawm lub rooj sib tham.

1. Muaj peev xwm
Rau cov electrolytic capacitor ntsia rau hauv txhuas los ntawm lub qhov uas pom hauv daim duab hauv qab no, cov ncej zoo thiab qhov tsis zoo feem ntau yog sawv cev los ntawm qhov ntev thiab luv taw thiab cov cim ntawm lub cev. Cov ceg ntev yog qhov zoo thiab cov ceg luv yog qhov tsis zoo. Feem ntau, muaj cov kab dawb los yog lwm yam kab txaij sib npaug rau tus pin ntawm lub plhaub ntawm qhov tsis zoo.
Lub electrolytic capacitor ntawm lub rooj tsavxwm Circuit Court feem ntau yog cim nrog polarity raws li qhia hauv daim duab.
Ib txoj hauv kev yog kos lub cim “+” ncaj qha rau ntawm qhov zoo. Qhov kom zoo dua ntawm txoj kev no yog nws yooj yim los xyuas cov polarity tom qab vuam. Qhov tsis zoo yog tias nws nyob thaj tsam loj ntawm lub rooj tsav xwm Circuit Court. Qhov thib ob txoj kev yog sau cov cheeb tsam uas tsis zoo electrode nyob nrog silk screen. Qhov kev sawv cev polarity no nyob ib cheeb tsam me me ntawm lub rooj tsav xwm hauv Circuit Court, tab sis nws tsis yooj yim los xyuas qhov polarity tom qab vuam. Nws yog ib txwm muaj nyob rau hauv lub sij hawm nrog siab ceev ntawm Circuit Court board li xws li computer motherboard.
Tantalum capacitors ntsia los ntawm lub qhov feem ntau yog cim nrog “+” ntawm lub cev ntawm qhov zoo, thiab qee qhov txawv ntxiv los ntawm qhov ntev thiab luv taw.
Txoj kev kos npe rau ntawm lub rooj tsav xwm Circuit Court ntawm lub capacitor tuaj yeem xa mus rau txhuas electrolytic capacitor.
Rau nto mounted aluminium electrolytic capacitors. Sab coated nrog number case yog tus ncej tsis zoo, thiab lub hauv paus ntawm tus ncej zoo yog feem ntau chamfered.
Nyob rau Daim Ntawv Luam Tawm Circuit Board, nws yog feem ntau pom nyob rau hauv daim duab saum toj no
Qhov ntawd yog siv lo lo ntxhuav npo “+” ntawm lub rooj tsav xwm Circuit Court los sawv cev rau tus ncej zoo, thiab kos cov qauv ntawm cov cuab yeej tib lub sijhawm. Nyob rau hauv txoj kev no, sab chamfered kuj siv tau los txheeb xyuas qhov zoo electrode.

Surface bonded tantalum capacitor

2. Diode
Rau lub teeb-emitting diodes, cov pins ntev thiab luv luv feem ntau yog siv los sawv cev rau cov ncej zoo thiab tsis zoo. Tus pin ntev yog qhov zoo thiab tus pin luv yog qhov tsis zoo. Qee zaum cov chaw tsim khoom yuav txiav tawm me ntsis ntawm ib sab ntawm LED, uas tuaj yeem siv los sawv cev rau qhov tsis zoo electrode.

Silk screen “+” feem ntau yog siv rau ntawm lub rooj tsav xwm Circuit Court los qhia qhov zoo electrode.
Rau cov diodes zoo tib yam

Hauv daim duab saum toj no, sab laug yog tus ncej tsis zoo thiab sab xis yog tus ncej zoo, uas yog, silk screen printing lossis stained iav yog siv los sawv cev qhov zoo thiab tsis zoo polarity. Ob txoj hauv qab no feem ntau yog siv los sawv cev qhov zoo thiab qhov tsis zoo ntawm lub rooj tsav xwm hauv Circuit Court.

Lub polarity ntawm diode yog qhia los ntawm silk screen ntawm lub rooj tsavxwm Circuit Court. Qhov no yog vivid. Lwm qhov yog kos cov cim schematic ntawm diodes ncaj qha rau ntawm lub vijtsam txhob lo lo ntxhuav luam tawm hauv Circuit Court board.
Lub polarity sawv cev ntawm nto mounted LED yog qhov tsis meej pem heev. Qee lub sij hawm muaj ntau tus sawv cev ntawm ntau hom pob khoom hauv ib lub chaw tsim khoom. Txawm li cas los xij, nws yog ib qho kev pleev xim xim xim los yog xim strips ntawm sab cathode ntawm lub teeb-emitting diodes. Tseem muaj cov ces kaum txiav rau sab cathode.
Lub polarity ntawm diode yog qhia los ntawm silk screen ntawm lub rooj tsavxwm Circuit Court. Qhov no yog vivid. Lwm qhov yog kos cov cim schematic ntawm diodes ncaj qha rau ntawm lub vijtsam silk screen luam tawm Circuit Board.
Lub polarity sawv cev ntawm nto mounted LED yog qhov tsis meej pem heev. Qee lub sij hawm muaj ntau tus sawv cev ntawm ntau hom pob khoom hauv ib lub chaw tsim khoom. Txawm li cas los xij, nws yog ib qho kev pleev xim xim xim los yog xim strips ntawm sab cathode ntawm lub teeb-emitting diodes. Tseem muaj cov ces kaum txiav rau sab cathode.

Ordinary nto mount diodes kuj siv silk screen luam ntawv lossis stained iav ntawm lub cev los sawv cev rau qhov tsis zoo electrode.

Integrated Circuit Court
Rau lub dip thiab thiaj li ntim cov kev sib txuas nrog cov pins faib rau ob sab, lub sab sauv semicircular feem ntau yog siv los qhia tias qhov kev taw qhia no yog saum lub nti, thiab thawj tus pin nyob rau sab laug yog thawj tus pin ntawm lub nti. Nws kuj tau qhia los ntawm kab kab rov tav rau saum nrog silk screen luam ntawv lossis laser.

Tsis tas li ntawd, tseem muaj cov kab lo lo ntxhuav npo ncaj qha rau ntawm lub cev ib sab ntawm thawj tus pin ntawm cov nti lossis nias lub qhov ncaj qha thaum txhaj tshuaj molding.
Qee qhov kev sib xyaw ua ke kuj tau sawv cev los ntawm kev txiav cov ntug beveled ntawm lub cev ntawm qhov pib ntug ntawm thawj tus pin.

Cov cim ntawm hom kev sib xyaw ua ke ntawm lub rooj tsav xwm Circuit Court feem ntau yog cim nrog qhov sib txawv ntawm sab saum toj.
Rau QFP, PLCC thiab BGA hauv pob tetragonal.
QFP ntim cov khoom sib xyaw ua ke feem ntau siv concave dots, silk screen dots, lossis silk screen luam ntawv raws li tus qauv los txiav txim qhov kev taw qhia ntawm lub cev sib xws rau thawj tus pin. Qee tus siv txoj kev txiav tawm lub kaum sab xis los sawv cev rau thawj ko taw. Lub sijhawm no, qhov kev coj ua counterclockwise yog thawj ko taw. Nws yuav tsum raug sau tseg tias qee zaum muaj peb lub qhov ntawm lub nti, yog li lub ces kaum tsis muaj qhov sib raug rau sab xis ntawm lub nti.

Vim hais tias lub cev ntawm PLCC pob yog qhov loj, nws yog feem ntau sawv cev los ntawm pits ncaj qha thaum pib ntawm thawj tus pin. Qee tus kuj txiav cov ces kaum ntawm sab laug sab laug ntawm lub nti.

BGA ntim khoom
BGA ntim tsis tsuas yog siv cov ntawv nyiaj kub-plated tooj liab nyob rau sab laug ces kaum los sawv cev rau thawj tus pin, tab sis kuj siv txoj hauv kev ntawm cov ces kaum uas ploj lawm, pits thiab silk screen dots los sawv cev ntawm thawj tus pin.
Cov duab ntawm lub rooj sib tham sib tham yog raws li hauv qab no
Thawj ceg yog kho nrog silk screen dots thiab cov ces kaum uas ploj lawm.

4. lwm yam khoom siv

Hauv qhov khoom tiag tiag, lub connector feem ntau tswj cov kev taw qhia los ntawm kev tso qhov nqis. Kuj tseem muaj cov uas sau 1 ze ntawm thawj ko taw lossis siv daim duab peb sab los sawv cev rau thawj ko taw. Feem ntau hais lus, lwm yam khoom siv tsis txhob yuam kev los ntawm kev kos duab lo lo ntxhuav zoo ib yam nrog cov khoom tiag tiag ntawm qhov luam tawm hauv Circuit Court board.
Rau kev tiv thaiv kev tshem tawm los ntawm qhov kev teeb tsa, nws yog feem ntau qhia los ntawm kev qhwv qhov kawg nrog silk screen ntawm lub rooj tsav xwm Circuit Court. Los yog sau 1 ze ntawm thawj ko taw.
Txhawm rau kom ua tus qauv raws li qhov yuav tsum tau ua ntawm cov ntaub qhwv ntsej, silk screen luam ntawv thiab kev tiv thaiv vuam ntawm cov khoom ntawm lub rooj tsav xwm Circuit Court, IPC lub koom haum tau tshaj tawm ob yam qauv: ipc-7351 thiab ipc-sm-840. Txawm li cas los xij, hauv kev siv tiag tiag, cov cuab yeej kev taw qhia cov cim cim ua los ntawm cov cuab yeej kev taw qhia sawv cev txoj kev txhais los ntawm IPC feem ntau raug thaiv los ntawm lub cev ntaus ntawv tom qab vuam, uas tsis haum rau kev tshuaj xyuas. Cov duab kos duab ntawm cov khoom siv ncoo yuav tsum tau hloov kho raws li qhov xwm txheej tiag tiag.
Nyob rau hauv luv luv, nyob rau hauv cov khoom tiag tiag, feem ntau discrete pab kiag li lawm siv txoj kev ntawm ntev thiab luv taw taw, txhob lo lo ntxhuav npo luam ntawv los yog colouring sawv cev rau polarity. Rau kev sib xyaw ua ke, cov ntsiab lus concave, silk screen printing, notches, cov ces kaum uas ploj lawm, cov npoo uas ploj lawm los yog qhia ncaj qha feem ntau yog siv rau thawj tus pin npav. Thaum ua cov duab pad, feem ntau yog kos raws li cov cuab yeej zoo li ntau li ntau tau, thiab muaj kev cuam tshuam cov ntaub ntawv ntsig txog qhov chaw ntawm lub cuab yeej zoo li daim ntawv lo lo ntxhuav kom ntau li ntau tau, kom tsis txhob muaj qhov yuam kev hauv phau ntawv sib dhos thiab vuam.