Dab tsi yog Qhov Yuav Tsum Tau Thiab Kev Ceeb Toom Rau PCB Silkscreen Design

Silk screen tsim yog ib qho tseem ceeb hauv kev tsim PCB. Silk screen printing ntawm PCB boards feem ntau suav nrog: tivthaiv kev tshuaj ntsuam luam ntawv thiab cov lej cim npe, lub npe lub npe, tus lej version, lub logo anti-static, barcode screen luam ntawv, tuam txhab LOGO thiab lwm yam logos. Tom ntej no, cia peb saib qhov yuav tsum tau ua rau silk screen tsim hauv PCB tsim.

1. Silk screen tsim yuav tsum

Qhov sib piv ntawm tus cwj pwm qhov siab rau tus cwj pwm dav ntawm cov cim silk screen feem ntau yuav tsum muaj ntau dua lossis sib npaug rau 6: 1. Muaj peb qhov ntau thiab tsawg font: ntawm lawv, thaum lub rooj tsav xwm ceev yog qhov siab, 4/25mil cim (No. 1) feem ntau siv; thaum qhov ceev yog li qub, 5/30mil cim (No. 2); thaum lub rooj tsavxwm tseem xoob, 6/45mil cim (No. 3) raug pom zoo; feem ntau lub hauv paus tooj liab tuab ntawm txheej txheej kuj muaj cov kev cai sib xws rau cov kab lo lo ntxhuav dav, puag tooj liab<1OZ, limit value ≥ 4 mil, optimization value ≥ 6 mil; When the base copper thickness is 1OZ, 5/30mil characters are preferred; when the base copper thickness is 2OZ, 6/45mil characters are preferred.

2. Yuav tsum tau ntxiv PCB silk screen luam ntawv

1. Kev tso chaw: Feem ntau hais lus, thaum tso cov kab lo lo ntxhuav ntawm cov resistors, capacitors, raj thiab lwm yam khoom siv, tsis txhob siv plaub txoj kev qhia. Qhov no yuav ua rau nws nkees heev los saib ntawm lub vijtsam txhob lo lo ntxhuav thaum lub sij hawm debugging, tu thiab vuam (Yuav ua li cas muaj pes tsawg lub rooj tsavxwm yuav tsum tig).

2. Sim tsis txhob xuas nrig ntawm lub qhov ntawm lub vijtsam txhob lo lo ntxhuav.

3. Tsis txhob nias lub vijtsam txhob lo lo ntxhuav ntawm cov kab teeb liab ceev (xws li cov kab moos, thiab lwm yam): Rau cov kab hluav taws xob ceev ceev nyob rau sab saum toj lossis hauv qab txheej, vim tias cov kab teeb liab zoo li no tuaj yeem suav tias yog cov kab microstrip.

4. Kev nyeem cov lus qhia ntawm lub vijtsam txhob lo lo ntxhuav yuav tsum ua raws li cov lus qhia siv. Kev nyeem cov lus qhia ntawm lub vijtsam txhob lo lo ntxhuav yuav tsum ua raws li kev siv ntawm cov nti. Qhov no feem ntau yog los txo qhov tshwm sim ntawm rov qab soldering thaum vuam.

5. Tus lej pin yuav tsum tau cim kom meej meej ntawm lub vijtsam txhob lo lo ntxhuav.

6. Silk screen luam ntawv rau pob khoom tshwj xeeb: Rau cov pob tshwj xeeb xws li BGA thiab QFN, qhov loj ntawm silk screen yuav tsum yog tib yam li qhov loj ntawm cov nti.

7. Silk screen printing ntawm lub mounting qhov: silk screen luam ntawv ntawm cov screws yog ntxiv nyob ze ntawm lub mounting qhov, thiab qhov ntev thiab tag nrho cov xov tooj ntawm screws kuj raug cim los pab txhim kho installation.

3. Kev ceev faj rau kev tsim silk screen

1. Cov kab xov kab dav dav ntawm lub rooj tsavxwm yuav tsum muaj ntau dua lossis sib npaug li 4 mil, thiab zam lub vijtsam luam ntawv kab dav ntawm cov khoom ua 0.

2. Qhov kev ncua deb ntawm lub npov txhob lo lo ntxhuav thiab cov ntaub qhwv ntsej: Tsis txhob npog cov ntsiab lus ntawm lub rooj tsavxwm nrog cov kab lo lo ntxhuav, xws li cov ntaub qhwv ntawm SMD cov khoom siv thiab los ntawm lub qhov ntawm cov plug-ins. Silkscreen yog cov khoom siv insulating. Thaum nws tau thov rau cov ntaub qhwv, nws yuav ua rau cov vuam tsis zoo; tsis txhob npog cov ntsiab lus xeem ntawm lub rooj tsavxwm. , kos cov ntsiab lus, thiab lwm yam; nws yog feem ntau yuav tsum tau kom muaj 6mil sib nrug.

3. Qhov sib nrug ntawm cov ntxaij vab tshaus txhob lo lo ntxhuav: tuav 6 mil. Overlapping ntawm silk screens yog txais. Thaum qhov sib tshooj ua rau tsis lees paub, nws yuav tsum tau kho tam sim ntawd.

4. Silk screen printing kev taw qhia: Kev npaj ntawm silk screen hlua yuav tsum ua raws li lub hauv paus ntsiab lus ntawm sab laug mus rau sab xis los yog hauv qab mus rau sab saum toj thaum saib ntawm qhov screen.

5. Qhov chaw ntawm cov khoom siv tus lej siv: Cov lej siv cov khoom siv yuav tsum sib haum rau cov khoom siv ib-rau-ib, thiab qhov kev txiav txim tsis tuaj yeem thim rov qab lossis hloov pauv. Thaum lub cuab yeej ntom ntom yog qhov tseem ceeb, cov txheej txheem ntawm kos duab tawm cov ntawv cim lossis cim cim tau siv los tso cov lej siv rau lwm qhov chaw ntawm lub rooj tsavxwm. Nyob qhov twg muaj chaw.

6. Cov cim polarity tivthaiv thiab "1" pin markings yuav tsum muab tso kom raug thiab kom meej.

7. Thaum qhia cov lus piav qhia lossis cov cim annotations, cov kab lus ntxiv thiab cov cim yuav tsum tau muab tso rau ntawm cov ntawv lo lo ntxhuav ntawm Board Geometry.

Lub npe ntawm lub rooj tsavxwm ntxiv thiab tus lej xov tooj lo lo ntxhuav kuj tau muab tso rau ntawm lub npov lo lo ntxhuav ntawm Board Geometry.

8. Lub cim npe tsis tuaj yeem muab tso rau hauv lub cev lub cev lossis sab nraum lub rooj tsavxwm.

9. Thaum lub rooj tsavxwm ceev yog qhov tseem ceeb thiab tsis muaj chaw nyob nrog cov neeg siv khoom, tab sis koj tuaj yeem sib tham nrog cov cuab yeej teeb tsa ua ke thiab tshuaj xyuas.

10. Thaum tus neeg siv khoom xav tau cov cim tooj liab sau rau saum thiab hauv qab txheej, kab dav ntawm cov cim tooj liab: HOZ puag tooj liab - lub cim dav yog ntau tshaj 8 mil thiab qhov siab yog ntau tshaj 45 mil; 1OZ puag tooj liab - lub cim dav yog ntau tshaj 10 mil thiab qhov siab yog ntau tshaj 50 mil. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum qhib lub qhov rais solder mask kom cov cim tooj liab ntawm lub rooj tsavxwm tsim yuav ci dua.