Lub hauv paus txheej txheem ntawm PCB pawg thawj coj saib tsim hauv SMT nti ua haujlwm yuav tsum tau saib xyuas tshwj xeeb. Ib qho ntawm lub hom phiaj tseem ceeb ntawm kev tsim qauv ntawm Circuit Court schematic yog los muab ib daim ntawv teev npe rau kev tsim ntawm PCB Circuit Board, thiab npaj lub hauv paus rau kev tsim cov pcb board. Cov txheej txheem tsim ntawm ntau txheej PCB Circuit Court boards yog qhov pib zoo ib yam li cov PCB zoo tib yam. Qhov sib txawv yog tias cov txheej txheem nruab nrab ntawm cov teeb liab nruab nrab thiab kev faib tawm ntawm cov hluav taws xob sab hauv yuav tsum tau nqa tawm. Ntawm qhov tod tes, qhov tsim ntawm ntau txheej PCB Circuit Court board tau muab faib ua cov kauj ruam hauv qab no:

1. Kev npaj ntawm lub rooj tsav xwm hauv Circuit Court yog tsuas yog los npaj lub cev loj ntawm lub rooj tsavxwm pcb, daim ntawv ntim ntawm cov khoom, cov txheej txheem mounting, thiab cov txheej txheem txheej, uas yog, ib txheej txheej board, ob txheej txheej board thiab multi-layer board.

2. Kev teeb tsa ua haujlwm feem ntau yog hais txog kev ua haujlwm ib puag ncig kev teeb tsa thiab kev ua haujlwm txheej txheej txheej txheej. Kev teeb tsa pcb ib puag ncig tsis raug raug thiab tsim nyog tuaj yeem nqa tau yooj yim rau kev tsim ntawm lub rooj tsav xwm Circuit Court thiab txhim kho kev ua haujlwm.

3. Cov txheej txheem txheej txheem thiab kev hloov kho. Tom qab lub sijhawm ua haujlwm tam sim no tau npaj tiav, daim ntawv teev npe tuaj yeem nkag mus rau hauv pcb, lossis daim ntawv teev npe tuaj yeem tuaj yeem ncaj qha rau hauv daim duab kos duab los ntawm kev hloov kho pcb. Cov txheej txheem kev teeb tsa thiab kev hloov kho yog cov haujlwm tseem ceeb hauv PCB tsim, uas cuam tshuam ncaj qha rau kev ua haujlwm xws li cov xaim txuas ntxiv thiab kev faib tawm ntawm cov txheej txheem hluav taws xob sab hauv.

4. Cov kev cai thaiv kab hluav taws xob tau teeb tsa, feem ntau yog los teeb tsa ntau yam tshwj xeeb ntawm kev xaim hluav taws xob, xaim dav, sib npaug ntawm cov xaim sib txuas, kev nyab xeeb ntawm cov xov hlau thiab cov ntaub qhwv, thiab ntawm qhov loj, thiab lwm yam. . Ib kauj ruam tseem ceeb, txoj cai xaim hluav taws xob zoo tuaj yeem ua kom muaj kev nyab xeeb ntawm Circuit Court routing, thiab ua tau raws li cov txheej txheem tsim khoom, txuag nqi.

5. Lwm cov haujlwm pabcuam, xws li kev tso nyiaj tooj liab thiab teardrop filling, nrog rau cov ntaub ntawv ua haujlwm xws li kev tshaj tawm cov ntaub ntawv thiab txuag luam ntawv. Cov ntaub ntawv no tuaj yeem siv los xyuas thiab hloov kho PCB Circuit Board, thiab tseem tuaj yeem siv los ua cov npe ntawm cov khoom yuav khoom.

Cov cai ntawm kev sib txuas ntawm cov khoom siv

1. Kos qhov chaw thaiv hauv 1 hli los ntawm ntug ntawm PCB lub rooj tsavxwm, thiab nyob rau hauv 1 hli nyob ib ncig ntawm lub qhov mounting, thaiv thaiv;

2. Cov hlua hluav taws xob yuav tsum dav li qhov ua tau thiab yuav tsum tsis pub tsawg dua 18mil; lub teeb liab kab dav yuav tsum tsis pub tsawg tshaj 12mil; cpu input thiab tso zis kab yuav tsum tsis txhob tsawg tshaj li 10mil (los yog 8mil); kab sib nrug yuav tsum tsis pub tsawg tshaj 10mil;

3. Qhov ib txwm dhau ntawm tsis pub tsawg dua 30mil;

4. Dual in-line: ncoo 60mil, aperture 40mil; 1/4W tsis kam: 51 * 55mil (0805 nto mount); thaum nyob hauv kab, ncoo 62mil, aperture 42mil; electrodeless capacitor: 51 * 55mil (0805 nto mount); Thaum nyob rau hauv kab, lub ncoo yog 50mil thiab lub aperture yog 28mil;

5. Nco ntsoov tias cov kab hluav taws xob thiab cov kab hauv av yuav tsum yog radial li sai tau, thiab cov teeb liab kab yuav tsum tsis txhob looped.