Cov txheej txheem yooj yim ntawmPCB Circuit Courcuit BoardTsim hauv SMT Miption ua haujlwm yuav tsum muaj kev tshwj xeeb. Ib qho ntawm lub hom phiaj tseem ceeb ntawm cov qauv hluav taws xob schematic tsim yog los muab cov rooj network rau PCB Circuit Coed tsim thiab los npaj lub hauv paus rau PCB Board tsim. Cov qauv tsim qauv ntawm cov txheej txheej pcb multi-pcb muaj ib qho zoo ib yam li cov kauj ruam tsim qauv ntawm cov thawj coj PCB zoo tib yam. Qhov sib txawv yog tias cov xaim ntawm cov teeb liab nruab nrab thiab kev faib khoom ntawm cov khoom siv hluav taws xob sab hauv yuav tsum tau nqa tawm. Noj ua ke, tus tsim ntawm ntau-txheej pcb Circuit Court board yog yeej zoo ib yam. Muab faib ua cov kauj ruam hauv qab no:
1. Circuit Court Board feem ntau yog koom nrog txoj kev loj ntawm PCB Board, thiab cov qauv txheej txheem, ib-txheej txheej, thiab ntau-txheej Cov laug cam.
2. Ua haujlwm Parameter, feem ntau yog hais txog kev ua haujlwm chaw ua haujlwm ntsuas chaw thiab ua haujlwm txheej txheej parameter chaw. Qhov tseeb thiab qhov tsim nyog ntawm PCB ib puag ncig muaj peev xwm coj tau yooj yim rau cov board tsim qauv thiab txhim kho kev ua haujlwm tau zoo.
3. Cov txheej txheem sib txawv thiab kev hloov kho. Tom qab kev ua haujlwm ua ntej tiav, lub rooj network tuaj yeem xa mus rau hauv PCB, lossis lub rooj network tuaj yeem xa ncaj qha rau hauv cov ntawv txheeb xyuas tus PCB. Cov txheej txheem sib xyaw thiab kev hloov kho yog cov haujlwm tseem ceeb hauv PCB tsim, uas cuam tshuam ncaj qha rau cov haujlwm txuas ntxiv xws li cov hluav taws xob thiab hluav taws xob segmentation.
4. Kab hlau txoj cai txoj cai tsuas yog teeb tsa ntau yam tshwj xeeb, xws li Hlau Dav, xws li kab sib tw sib nrug, kev nyab xeeb ntawm cov xov hlau thiab cov ntaub qhwv, thiab ntawm loj. Tsis muaj teeb meem dab tsi yuav saws yuav saws, cov cai sib cai yog qhov tsim nyog. Ib kauj ruam tseem ceeb, cov cai hlau zoo tuaj yeem ua kom muaj kev nyab xeeb ntawm Circuit Court kev khiav, ua raws cov txheej txheem ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag tus nqi ntau lawm, thiab txuag cov nqi.
5. Lwm cov haujlwm ua haujlwm, xws li tooj liab txheej thiab teardrop puv, raws li cov ntaub ntawv ua xws li cov lus tshaj tawm thiab txuag luam tawm. Cov ntaub ntawv no tuaj yeem siv los tshawb xyuas thiab hloov kho PCB Circuit Coffic Cam, thiab tseem siv tau ua cov npe ntawm cov khoom yuav khoom.
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Cov Kev Cai Raws Khiav
1. Tso cai xaim nyob hauv thaj chaw ≤1 hli los ntawm ntug Pcb Board thiab tsis pub dhau 1mm nyob ib ncig ntawm lub mounting;
2. Lub hwj chim kab yuav tsum yog dav li sai tau thiab yuav tsum tsis txhob tsawg dua 18mil; Daim teeb liab kab dav yuav tsum tsis pub tsawg tshaj 12mil; Lub tswv yim CPU thiab cov tso zis yuav tsum tsis pub tsawg tshaj 10mil (lossis 8mil); Cov kab spacing yuav tsum tsis pub tsawg tshaj 10mil;
3. Li qub ntawm qhov tsis pub tsawg tshaj 30mil;
4. Dual hauv-kab ntsaws: Pad 60mil, aperture 40mil; 1/ 4W resistor: 51 * 55mil (0805 nto mount); Thaum plugged nyob rau hauv, Pad 62Mil, aperture 42Mil; Cov Capacess: 51 * 55mil (0805 nto mount); Thaum ntxig ncaj qha, lub ncoo yog 50mil thiab lub qhov taub yog 28mil;
5. Ua tib zoo mloog rau tias cov xaim hluav taws xob thiab cov xov hlau yuav tsum muaj radial li sai tau, thiab cov teeb liab yuav tsum tsis txhob nyob hauv loops.