I. Common errors in schematic diagrams

(2) Component out of bounds: component is not created in the center of component library diagram paper.

(3) The created project file network table can only be partially loaded into PCB: Tsy voafantina ny Global tamin’ny fotoana namoronana netlist.

(4) Aza mampiasa Annotate mihitsy rehefa mampiasa singa multipart noforonin-tena.

Common errors in PCB

(1) When the network is loaded, it is reported that NODE is not found a. Components in the schematic diagram use packages that are not in the PCB library; B. Components in the schematic diagram use packages with different names in the PCB library; C. Ireo mpiorina amin’ny sary an-tsary dia mampiasa fonosana misy isa tsy mifanaraka amin’ny PIN ao amin’ny tranomboky PCB. Ohatra, triode: ny isa pin ao amin’ny SCH dia e, b, c, ary 1,2,3 ao amin’ny PCB.

(2) Always cannot print to a page when printing

A. Ny tranomboky PCB dia tsy eo am-piandohana rehefa noforonina; B. Misy endri-tsoratra miafina ivelan’ny faritry ny tabilao PCB aorian’ny famindrana sy fihodinana singa imbetsaka. Safidio ny endri-tsoratra miafina rehetra, ahenao ny PCB, ary afindra ireo tarehintsoratra ao anatin’ny fetra.

(3) Mizara roa ny tambajotram-pifandraisana DRC:

Midika izany fa tsy mifandray NY tamba-jotra. Jereo ny rakitra anaovana tatitra ary safidio ny COPPER mifandray mba hikarohanao.

Raha famolavolana sarotra kokoa dia andramo ny tsy mampiasa tariby mandeha ho azy.

Common mistakes in PCB manufacturing process

(1) pad mifanindry a. Miteraka lavaka mavesatra, amin’ny fandavahana noho ny lavaka maro ao anaty lavaka ateraky ny fandavahana sy ny fahasimban’ny lavaka.

B. Ao amin’ny solaitrabe misy sosona marobe, misy ny kapila mampifandray sy ny kapila mitoka-monina amin’ny toerana mitovy, ary ny tabilao dia mitondra tena toy ny • fitoka-monina sy hadisoana amin’ny fifandraisana.

(2) Ny fampiasana ny sosona sary dia tsy namboarina a. Manitsakitsaka ny famolavolana mahazatra, toy ny famolavolana endrika ambonimbony ao amin’ny sosona Ambany, ny famolavolana ny fantsom-bokatra ao amin’ny sosona TOP, ka mahatonga ny tsy fahazoan-kevitra.

B. There is a lot of design junk on each layer, such as broken lines, useless borders, annotations, etc.

(3) Unreasonable characters a. Characters cover SMD welds, which brings inconvenience to PCB on-off detection and component welding.

B. Kely loatra ny endri-tsoratra, ka miteraka fahasahiranana amin’ny fanontana amin’ny efijery, ny endri-tsoratra lehibe loatra mifanindry, sarotra ny manavaka, endri-tsoratra ankapobeny> 40 arivo

(4) Single-sided pads set aperture a. Single-sided pads generally do not drill holes, the aperture should be designed to be zero, otherwise in the production of drilling data, the location of the hole coordinates. Special instructions should be given for drilling holes.

B. Raha mila atsofoka ilay pad tokana, fa ny lavaka tsy natao, ny rindrambaiko dia hitondra ny pad ho toy ny pad SMT rehefa mivoaka ny angona elektrika sy ny fananganana, ary ny sosona anatiny kosa dia hanary ilay pad isolation.

(5) Draw the pad with a filling block

Amin’izany fomba izany, na dia afaka mandalo ny fitsirihana DRC aza izy, dia tsy afaka mamokatra mivantana ny angon-drakitra fanoherana mandritra ny fanodinana, ary rakotra fanoherana solder ny pad ary tsy azo fefy.

(6) The electric stratum is designed with both heat sink plate and signal line, and the positive and negative images are designed together, causing errors.

(7) Kely loatra ny elanelana misy ny faritra malalaka

Grid line spacing < 0.3mm, amin’ny dingan’ny famokarana PCB, ny fizotry ny famindrana sary dia mamokatra sarimihetsika tapaka aorian’ny fivelarana, ka miteraka fahatapahana tariby. Hatsarao ny fahasarotana fanodinana.

(8) The graph is too close to the outer frame

The spacing should be more than 0.2mm at least (more than 0.35mm at V-cut), otherwise the copper foil will warp and solder resist will fall off during the appearance processing. Affect the appearance quality (including the inner copper skin of the multilayer panel).

(9) The outline frame design is not clear

Maro ny sosona noforonina amin’ny zana-kazo, izay tsy mifanandrify, ka manasarotra ny mpamokatra PCB hamaritra izay tsipika tokony hatsangana. Ny endriny mahazatra dia tokony hovolavolaina amin’ny sosona mekanika na sosona BOARD, ary tokony hazava ny toerana misy hollowed.

(10) Famolavolana sary tsy mitovy

When the graph electroplating, the current distribution is uneven, affecting the coating uniform, even cause warpage.

(11) Lavaka miendrika fohy

Ny halavany / sakan’ny lavaka miendrika manokana dia tokony> 2: 1, sakany & gt; 1.0mm, otherwise CNC drilling machine can not process.

(12) No milling shape positioning hole is designed

Design at least 2 diameters in PCB if possible. Lavaka fametrahana 1.5mm.

(13) The aperture is not clearly marked

A. Aperture should be marked in metric system as far as possible and increase by 0.05. B. As far as possible to merge the aperture into a reservoir area. C. Whether the tolerance of metallized holes and special holes (such as crimping holes) is clearly marked.

(14) The inner layer of the multilayer is unreasonable

A. The heat dissipation pad is placed on the isolation belt. It may fail to connect after drilling. B. Ny famolavolana fehikibo mitoka-monina dia marihina ary mora diso hevitra. C. The isolation belt is too narrow to accurately judge the network

(15) Design of buried blind orifice plate

The significance of design of buried blind hole plate: a. Increase the density of multilayer board by more than 30%, reduce the number of layers of multilayer board and reduce the size of b. Fanatsarana PCB nohatsaraina, indrindra ny fifehezana ny impedance mampiavaka azy (fanafohezana tariby, fihenan’ny vava) c. Hatsarao ny fahalalahan’ny famolavolana PCB d. mampihena ny akora sy ny vidiny, manampy amin’ny fiarovana ny tontolo iainana. Ny hafa manondro ireo olana ireo amin’ny fahazarana miasa, izay matetika no olan’ny olona.

Tsy fahampian’ny drafitra

As the saying goes, “If a man does not plan ahead, trouble will find him. “This certainly applies to PCB design as well. Iray amin’ireo dingana maro mahatonga ny fahombiazan’ny PCB hahomby amin’ny fisafidianana ny fitaovana mety. Today’s PCB design engineers can find many powerful and easy-to-use EDA suites on the market. Samy manana ny fahaizany sy ny tanjany ary ny fetrany manokana. It should also be noted that no software is foolproof, so problems such as component packaging mismatches are bound to occur. Mety tsy hisy fitaovana tokana hahafeno ny filanao rehetra, fa mbola mila manao ny fikarohana aloha ianao ary manandrana mamantatra izay mety indrindra amin’ny filanao. Ny fampahalalana sasany amin’ny Internet dia afaka manampy anao hanomboka haingana.

Fifandraisana ratsy

While the practice of outsourcing PCB design to other vendors is becoming more common and often very cost-effective, it may not be appropriate for complex PCB designs where performance and reliability are critical. As design complexity increases, face-to-face communication between engineers and PCB designers becomes important in order to ensure accurate component layout and wiring in real time. This face-to-face communication can help save costly rework later.

Zava-dehibe koa ny manasa ireo mpanamboatra birao PCB alohan’ny dingana famolavolana. They can provide initial feedback on your design, and they can maximize efficiency based on their processes and procedures, which will save you considerable time and money in the long run. Amin’ny famelana azy ireo hahafantatra ny tanjonao famolavolana sy ny fanasana azy ireo handray anjara amin’ny dingana voalohan’ny layout PCB, azonao atao ny misoroka ny olana mety hitranga alohan’ny hidiran’ny vokatra ary hanafohezana ny fotoana hivarotana.

Tsy nahomby tamin’ny fitsapana tsara ireo prototypes aloha

Ny tabilao prototype dia mamela anao hanaporofo fa ny endriny dia miasa amin’ny famaritana voalohany. Prototype testing allows you to verify the functionality and quality of a PCB and its performance prior to mass production. Successful prototyping takes a lot of time and experience, but a strong test plan and a clear set of goals can shorten evaluation time and also reduce the likelihood of production-related errors. If any problems are found during prototype testing, a second test is performed on the reconfigured board. Amin’ny alàlan’ny fampidirana ireo trangan-javatra mety hampidi-doza be eo am-piandohan’ny drafitra famolavolana dia hahazo tombony amin’ny fitsapana maromaro ianao, hamantatra mialoha izay mety ho olana mety hitranga, hanalefaka ny loza mety hitranga, ary hahazoana antoka fa vita ara-potoana ny drafitra.

Use inefficient layout techniques or incorrect components

Fitaovana kely sy haingana kokoa dia mamela ny injenieran’ny famolavolana PCB hametraka famolavolana sarotra izay mampiasa singa kely kokoa hampihenana ny dian-tongotra ary hametrahana azy ireo akaiky kokoa. Using technologies such as embedded discrete devices on internal PCB layers, or ball Grid array (BGA) packages with less pin spacing, will help reduce board size, improve performance, and preserve space for rework if problems occur. Rehefa ampiasaina miaraka amin’ireo singa misy isa isa avo sy elanelam-potoana kely kokoa dia zava-dehibe ny fisafidianana ny teknika fametrahana ny tabilao mety amin’ny fotoana famolavolana hialana amin’ny olana any aoriana ary hampihena ny vidin’ny famokarana. Aza hadino koa ny mandinika tsara ny elanelam-potoana sy ny toetran’ny fahombiazan’ny alternatives kasainao hampiasaina, na dia ireo voamarika ho solo-in aza. A small change in the characteristics of a replacement component can be enough to screw up the performance of an entire design.

Aza adino ny mamerina angon-drakitra manan-danja ho an’ny nomaniny ho solon’izay asa. Mila mampatsiahy anao ve aho? At the very least, you should back up your most important work and other hard-to-replace files. Raha ny ankamaroan’ny orinasa dia mamerina ny angon-drakitra isan’andro isan’andro, ny orinasa kely kokoa dia mety tsy manao an’io, na na miasa any an-trano aza ianao. Today, it’s so easy and cheap to back up your data to the cloud that there’s no excuse not to back it up and store it in a secure location to protect it from theft, fire, and other local disasters.

Become a one-man island

Na dia mety mieritreritra aza ianao fa tsy misy dikany ny volavolanao ary tsy ny fombanao fotsiny ny manao fahadisoana, imbetsaka dia hahita fahotana amin’ny namanao izay tsy hitanao ny namanao. Indraindray, na dia fantatrao aza ny pitsopitsony be pitsiny amin’ny famolavolana iray, ny olona tsy dia miraharaha azy dia mety hihazona fihetsika mitodika kokoa ary manome fomba fijery sarobidy. Regular review of your design with your peers can help spot unforeseen problems and keep your plan on track to stay within budget. Azo antoka fa tsy azo ihodivirana ny lesoka, fa raha mianatra avy amin’izy ireo ianao dia afaka mamorona vokatra tsara amin’ny manaraka.