Hauv kev txiav txim siab dav dav, ntim khoom yog muab cov ntaub ntawv paub daws teeb meem thiab ua haujlwm los tsim cov organic tag nrho. Feem ntau, ceramics, plastics, hlau thiab lwm yam ntaub ntawv yog siv los kaw, qhov chaw, kho, tiv thaiv thiab txhim khu lub electrothermal kev ua tau zoo ntawm semiconductor integrated circuits. Los ntawm cov nti Cov ntsiab lus kev sib txuas ntawm sab sauv yog txuas nrog cov pins ntawm lub plhaub pob nrog cov xov hlau, kom paub txog kev sib txuas nrog lwm cov circuits los ntawm PCB; qhov taw qhia tseem ceeb los ntsuas cov thev naus laus zis thev naus laus zis ntawm pob chip yog qhov piv ntawm cov nti hauv cheeb tsam mus rau thaj chaw pob, qhov sib piv ze dua yog 1, qhov zoo dua. Yog li dab tsi yog qhov kev ceev faj rau kev ntim khoom PCB?

Kev ceev faj rau kev ntim khoom pcb

Kuv ntseeg tias cov neeg uas tau tsim kho kho vajtse tau ntsib kev ua Cov Khoom Siv lossis Module ntim los ntawm lawv tus kheej, tab sis nws tsis yooj yim heev rau kev ntim khoom zoo. Kuv ntseeg tias txhua tus neeg muaj kev paub zoo li no:

(1) Lub rub pob pin suab loj dhau los yog me me dhau los ua kom sib dhos;

(2) Lub pob teeb duab yog thim rov qab, ua rau Cov Khoom Siv lossis Cov Khoom Siv Hluav Taws Xob tau nruab rau sab nraub qaum kom sib haum rau cov schematic pins;

(3) Cov pins loj thiab me me ntawm cov pob rub tawm yog thim rov qab, uas ua rau cov khoom tig rov qab;

(4) Lub pob ntawm cov duab kos tsis sib haum nrog Cov Khoom lossis Cov Qauv uas tau yuav, thiab nws tsis tuaj yeem sib sau ua ke;

(5) Lub encapsulation thav duab ntawm daim duab yog loj dhau los yog me me, uas ua rau tib neeg tsis xis nyob.

(6) Lub pob zeb pleev xim yog tsis raug raws li qhov xwm txheej tiag tiag, tshwj xeeb tshaj yog qee qhov ntawm lub qhov mounting tsis tau muab tso rau hauv txoj haujlwm zoo, uas ua rau nws tsis tuaj yeem txhim kho cov ntsia hlau. Thiab yog li ntawd, kuv ntseeg tias ntau tus neeg tau ntsib cov xwm txheej zoo li no. Kuv tau ua qhov yuam kev no tsis ntev los no, yog li kuv tau sau ib tsab xov xwm tshwj xeeb hnub no kom ceev faj, zaj lus qhia yav dhau los, thiab qhia rau yav tom ntej. Kuv vam tias kuv yuav tsis ua qhov yuam kev no ntxiv rau yav tom ntej.

Tom qab kos lub schematic daim duab, lub pob yog muab rau cov khoom. Nws raug nquahu kom siv cov pob hauv lub kaw lus pob tsev qiv ntawv lossis lub tuam txhab pob tsev qiv ntawv, vim tias cov pob no tau raug txheeb xyuas los ntawm cov neeg ua ntej. Yog tias koj tuaj yeem ua koj tus kheej, tsis txhob ua koj tus kheej. . Tab sis ntau zaus peb tseem yuav tau ua lub encapsulation ntawm peb tus kheej, los yog kuv yuav tsum xyuam xim rau dab tsi teeb meem kuv yuav tsum xyuam xim rau thaum ua encapsulation? Ua ntej tshaj plaws, peb yuav tsum muaj lub pob loj ntawm Cov Khoom Siv lossis Module ntawm tes. Daim ntawv qhia dav dav no yuav muaj cov lus qhia. Qee cov khoom siv tau pom zoo cov pob hauv cov ntaub ntawv. Qhov no yog qhov peb yuav tsum tsim lub pob raws li cov lus pom zoo hauv cov ntaub ntawv; yog tias tsuas yog muab rau hauv cov ntaub ntawv Cov ntaub ntawv loj, ces lub pob yog 0.5mm-1.0mm loj dua li qhov loj me. Yog tias qhov chaw tso cai, nws raug nquahu kom ntxiv ib qho qauv lossis thav duab rau Cov Khoom Siv lossis Module thaum encapsulating; yog tias qhov chaw tsis tso cai tiag tiag, koj tuaj yeem xaiv tsuas yog ntxiv cov qauv lossis cov ncej rau ib feem ntawm qhov qub. Kuj tseem muaj qee cov qauv thoob ntiaj teb rau kev ntim khoom ntawm tus nqi qub. Koj tuaj yeem xa mus rau IPC-SM-782A, IPC-7351 thiab lwm yam ntaub ntawv ntsig txog.

Tom qab koj kos ib pob, thov saib cov lus nug hauv qab no rau kev sib piv. Yog tias koj tau ua tag nrho cov lus nug hauv qab no, ces yuav tsum tsis muaj teeb meem nrog lub pob koj tsim!

(1) Puas yog lub suab coj ua raug? Yog cov lus teb tsis yog, tej zaum koj yuav tsis tau solder!

(2) Puas yog tus qauv tsim tsim nyog txaus? Yog hais tias lub ncoo loj dhau los yog me me, nws tsis haum rau soldering!

(3) Puas yog pob khoom koj tsim los ntawm kev xav ntawm Sab saum toj Saib? Thaum tsim lub pob, nws yog qhov zoo tshaj plaws los tsim los ntawm kev xav ntawm Sab saum toj Saib, uas yog lub kaum sab xis thaum cov khoom siv pins tau saib los ntawm qab. Yog tias lub pob tsis tsim los ntawm lub kaum sab saum toj, tom qab lub rooj tsavxwm ua tiav, koj yuav tsum tau muab cov khoom siv nrog plaub tus pins tig rau saum ntuj (SMD cov khoom tuaj yeem tsuas yog soldered nrog plaub tus pins tig rau saum ntuj) lossis sab nraub qaum. lub rooj tsavxwm (PTH Cheebtsam yuav tsum tau soldered rau tom qab).

(4) Puas yog qhov txheeb ze ntawm Pin 1 thiab Pin N yog lawm? Yog tias nws tsis yog lawm, nws yuav tsum tau teeb tsa cov khoom rov qab, thiab nws muaj feem ntau tias cov hlau lead ya los yog lub rooj tsavxwm yuav raug muab pov tseg.

(5) Yog hais tias yuav tsum tau mounting qhov ntawm lub pob, cov txheeb ze txoj hauj lwm ntawm lub mounting qhov ntawm lub pob puas yog? Yog hais tias tus txheeb ze txoj hauj lwm tsis raug, nws tsis tuaj yeem kho, tshwj xeeb tshaj yog rau qee cov laug cam nrog Module. Txij li thaum muaj qhov mounting qhov ntawm Module, kuj tseem muaj qhov mounting ntawm lub rooj tsavxwm. Cov hauj lwm txheeb ze ntawm ob qhov sib txawv. Tom qab lub rooj tsavxwm tawm los, ob qho tib si tsis tuaj yeem txuas tau zoo. Rau qhov teeb meem ntau Module, nws raug nquahu kom cia ME ua lub module ncej thiab mounting qhov chaw ua ntej tsim lub module pob.

(6) Koj puas tau kos Pin 1? Qhov no yog qhov tsim nyog rau kev sib dhos tom qab thiab kev debugging.

(7) Koj puas tau tsim cov qauv lossis cov ncej rau Cov Khoom lossis Cov Qauv? Qhov no yog qhov tsim nyog rau kev sib dhos tom qab thiab kev debugging.

(8) Rau ICs nrog ntau tus pins tuab, koj puas tau cim 5X thiab 10X pins? Qhov no yog qhov zoo rau kev debugging tom qab.

(9) Puas yog qhov ntau thiab tsawg ntawm cov cim thiab cov qauv uas koj tsim tsim nyog? Yog tias nws tsis tsim nyog, kev tsim ntawm lub rooj tsavxwm tuaj yeem ua rau tib neeg xav tias nws tsis zoo tag nrho.