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: Níor roghnaíodh Global nuair a gineadh glanliosta.

(4) Ná húsáid Anótáil riamh agus comhpháirteanna il-chruthaithe féin-chruthaithe á n-úsáid.

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. Úsáideann comhpháirteanna i léaráidí scéimeacha pacáistí le huimhreacha PIN neamhréireacha i leabharlann PCB. Mar shampla, tríóid: is iad na huimhreacha bioráin in SCH e, b, c, agus 1,2,3 i PCB.

(2) Always cannot print to a page when printing

A. Níl bunús le leabharlann PCB nuair a cruthaíodh í; B. Tá carachtair i bhfolach taobh amuigh de theorainneacha chlár PCB tar éis comhpháirteanna a bhogadh agus a rothlú go minic. Roghnaigh taispeáin gach carachtar i bhfolach, crapadh an PCB, agus ansin bog na carachtair taobh istigh den teorainn.

(3) Tá líonra tuairiscithe DRC roinnte ina chodanna éagsúla:

Tugann sé seo le fios nach bhfuil an líonra CONNECTED. Féach ar chomhad na tuarascála agus roghnaigh CONNECTED COPPER chun cuardach a dhéanamh.

Más dearadh níos casta é, déan iarracht gan sreangú uathoibríoch a úsáid.

Common mistakes in PCB manufacturing process

(1) forluí ceap a. Cúis le poll trom, sa druileáil mar gheall ar iliomad poill i bpoll de bharr druileála agus damáiste poll.

B. Sa chlár ilchiseal, tá dioscaí ceangail agus dioscaí aonrúcháin sa suíomh céanna, agus iompraíonn an bord mar • earráid aonrúcháin agus ceangail.

(2) Ní dhéantar úsáid ciseal grafaicí a chaighdeánú a. Sáraíonn sé an dearadh traidisiúnta, mar shampla dearadh dromchla comhpháirteanna sa chiseal Bun, dearadh dromchla táthúcháin sa chiseal BARR, ag cruthú míthuisceana.

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. Tá na carachtair ró-bheag, agus bíonn deacrachtaí priontála scáileáin mar thoradh orthu, bíonn carachtair ró-mhór ag forluí ar a chéile, tá sé deacair idirdhealú a dhéanamh, cló ginearálta> 40 míle

(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. Más gá an ceap aon-thaobh a dhruileáil, ach mura bhfuil an poll deartha, déileálfaidh na bogearraí leis an gceap mar eochaircheap SMT nuair a aschur sonraí leictreacha agus foirmithe, agus scriosfaidh an ciseal istigh an ceap leithlisithe.

(5) Draw the pad with a filling block

Ar an mbealach seo, cé gur féidir leis pas a fháil in iniúchadh THE DRC, ní féidir leis sonraí friotaíochta solder a ghiniúint go díreach le linn na próiseála, agus tá an ceap clúdaithe le friotaíocht sádrála agus ní féidir é a tháthú.

(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) Tá spásáil eangaí limistéar mór ró-bheag

Grid line spacing < 0.3mm, i bpróiseas na déantúsaíochta PCB, táirgeann an próiseas aistrithe grafach scannán briste tar éis forbairt, agus bristeadh sreinge mar thoradh air. Feabhas a chur ar an deacracht phróiseála.

(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

Dearadh go leor sraitheanna le frámaí, nach dtagann i gcomhthráth lena chéile, rud a fhágann go mbíonn sé deacair ar mhonaróirí PCB a chinneadh cén líne ba chóir a fhoirmiú. Ba chóir an fráma caighdeánach a dhearadh sa chiseal meicniúil nó sa chiseal BORD, agus ba cheart go mbeadh an suíomh inmheánach cuasaithe soiléir.

(10) Dearadh grafach míchothrom

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

(11) Poll gearr-chruthach

Ba chóir go mbeadh fad / leithead an phoill i gcruth speisialta> 2: 1, leithead & 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. Poll suite 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. Tá dearadh crios leithlisithe bearrtha agus furasta a thuiscint. 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. Feidhmíocht fheabhsaithe PCB, go háirithe rialú ar impedance tréith (giorrú sreinge, laghdú Cró) c. Saoirse dearadh PCB a fheabhsú d. amhábhair agus costais a laghdú, a chabhródh le cosaint an chomhshaoil. Cuireann daoine eile na fadhbanna i leith nósanna oibre, agus is minic gurb í sin fadhb an duine.

Easpa pleanála

As the saying goes, “If a man does not plan ahead, trouble will find him. “This certainly applies to PCB design as well. Ceann de na céimeanna iomadúla a éiríonn le dearadh PCB is ea an uirlis cheart a roghnú. Today’s PCB design engineers can find many powerful and easy-to-use EDA suites on the market. Tá a chumais, a láidreachtaí agus a theorainneacha uathúla féin ag gach ceann acu. It should also be noted that no software is foolproof, so problems such as component packaging mismatches are bound to occur. Is féidir nach gcomhlíonfaidh aon uirlis amháin do chuid riachtanas go léir, ach caithfidh tú do chuid taighde a dhéanamh roimh ré agus iarracht a dhéanamh a dhéanamh amach cad é is fearr do do riachtanais. Is féidir le roinnt faisnéise ar an Idirlíon cabhrú leat tosú go tapa.

Cumarsáid lag

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.

Tá sé tábhachtach freisin cuireadh a thabhairt do mhonaróirí boird PCB go luath sa phróiseas dearaidh. 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. Trí chur in iúl dóibh do spriocanna dearaidh agus cuireadh a thabhairt dóibh páirt a ghlacadh sna céimeanna luatha de leagan amach PCB, is féidir leat aon fhadhbanna féideartha a sheachaint sula dtéann an táirge i dtáirgeadh agus an t-am chun an mhargaidh a ghiorrú.

Theip ar fhréamhshamhlacha luatha a thástáil go críochnúil

Ligeann cláir fhréamhshamhla duit a chruthú go bhfuil do dhearadh ag obair de réir na sonraíochtaí bunaidh. 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. Trí fhachtóirí ardriosca a áireamh go luath sa phróiseas dearaidh, bainfidh tú leas as atreorú iolrach tástála, aon fhadhbanna féideartha a aithint go luath, rioscaí a mhaolú, agus a chinntiú go gcuirfear an plean i gcrích de réir an sceidil.

Use inefficient layout techniques or incorrect components

Ligeann gairis níos lú agus níos gasta d’innealtóirí dearaidh PCB dearaí casta a leagan amach a úsáideann comhpháirteanna níos lú chun an lorg a laghdú agus iad a chur níos gaire le chéile. 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. Nuair a úsáidtear é le comhpháirteanna a bhfuil comhaireamh bioráin ard agus spásáil níos lú acu, tá sé tábhachtach an teicníc cheart maidir le leagan amach an bhoird a roghnú ag am dearaidh chun fadhbanna a sheachaint níos déanaí agus costais déantúsaíochta a íoslaghdú. Chomh maith leis sin, bí cinnte staidéar cúramach a dhéanamh ar raon agus tréithe feidhmíochta na roghanna malartacha atá beartaithe agat a úsáid, fiú iad siúd atá lipéadaithe mar athsholáthar buail isteach. A small change in the characteristics of a replacement component can be enough to screw up the performance of an entire design.

Déan dearmad sonraí tábhachtacha a chúltaca le haghaidh do chúltaca oibre. An gá dom a mheabhrú duit? At the very least, you should back up your most important work and other hard-to-replace files. Cé go ndéanann formhór na gcuideachtaí a gcuid sonraí go léir a chúltaca go laethúil, b’fhéidir nach ndéanfaidh roinnt cuideachtaí níos lú é seo, nó fiú má oibríonn tú ón mbaile. 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

Cé go gceapfá go bhfuil do dhearadh gan locht agus nach é do stíl féin botúin a dhéanamh, is iomaí uair a fheicfidh do phiaraí botúin i do dhearadh nár thug tú faoi deara. Uaireanta, fiú má tá sonraí casta dearaidh ar eolas agat, d’fhéadfadh go mbeadh daoine nach bhfuil níos lú nochta dó in ann dearcadh níos oibiachtúla a choinneáil agus léargas luachmhar a sholáthar. Regular review of your design with your peers can help spot unforeseen problems and keep your plan on track to stay within budget. Cinnte, tá botúin dosheachanta, ach má fhoghlaimíonn tú uathu, is féidir leat táirge iontach a dhearadh an chéad uair eile.