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Found 17 results

  1. Lasseryie

    How to Design a PCB Layout

    PCB Layout Tutorial: For High-Quality PCB Design http://www.apogeeweb.net/article/89.html Asymmetric source/drain MOS transistor LPNP MMC
  2. soldertools1

    Best tape for conformal coating process?

    Hello, Please suggest me, is there is any other best tape for the conformal coating process. Currently, I am using Blue Painters Tape offered by BEST Inc.
  3. ElectroTop

    PCB by JLCPCB

    JLCPCB is the Best and Cheap way to order Your Professional PCBs. I'm ordering PCBs from JLCPCB and they are EXCELLENT QUALITY!! This is the PCB manufacturing company for more than 10 Years. They do offer the colors of the PCBs and the Thickness of the PCBs. And the Crazy thing is they offer 10 PCBs for JUST $2!!! So if you are looking for a low cost but quality PCBs then you can checkout their website by Clicking Here. Amazing Website
  4. soldertools1

    New Here!!!

    Hello, Everyone!!! I am Katy Radcliff and new to this forum. I love to repair and rework PCB's, so I hope I will get something new related to PCB's and other electronic things.
  5. I ordered my first PCBs from www.jlcpcb.com last week, and I am very impressed. I usually get my PCBs from seeedstudio ..... but now it will be JLCPCB. It's my firist order. Unimaginably, my first order , shipping ,free !!!! Just cost $2 !!!! Can't unbelive this. I order the senond, shipping ,display $18 to Candan. The customer service told me: free shipping just for first order. Here is quick review, in point form; · Great web site and is update. Can actually see PCB manufacture process of order, tracking, design, etc.. everything is in one place. Nice. · 5 days to arrive at my door, from time of order. I am in Candan.· PCBs packed very well. · Silks screen is very detailed and 'fine' · Price is the cheapest... · Shipping is with DHL, which i like. I like red I have a new try and choose a red mask. I like red, it’s bold and eye-catching. Green with white silkscreen.green is probably the best of all the available colours in practical terms. Below boards from JLCPCB. They were all cut perfectly to size, all perfectly etched and drilled, tinned. Inspection of fine traces on the board for defects is best done with some form of magnification. Electrically, the SIMM tested fine.
  6. Hi all, I found a ver very good and really cheap pcb service! Its called PCBWay, and they have cheap 2layer 10x 10x10cm pcb for just $5! and shipping to the Netherlands was just $7!(china post) And they have real good and very kind customer service witch reply back very fast and every question i had got answered in not time AND they give you $5 free for your first order! Pcb's look good and came fast. All pcb's where exported with eagle. I got 2 extra pcb's(win win) probably if a pcb fails check or something. I used blue silkscreen with white text for the pcb and also bought some project pcb's with holes wich i got in 5 collors and look absolutly great! The blue silkscreen looks absolutly perfect, its really perfectly alligned! and the text looked good, it looked a little bit blocky but still it looks great! I ordered pcb's for a adafruit solar charger clone as i needed 9 of them and just didnt have the money to buy them. Since i already had all the components i needed exept the pcb's i just bought the pcb's since their charger is opensource and created them my self to save some costs.(i'll probable sell the last one i dont need) At first i thought if i had to buy the comonents also it all would be more expensive but i calculated if i wanted to create 10 solar chargers and bought all components from aliexpress and bought the pcbs from pcbway i save around $30 to my suprise!!!!!(first time self build a product is cheaper then buying) The chargers are for my solar powered raspberry pi zero powered wireless timelapse and livestream camera's, witch will be mounted in my backyard pointing at bird homes and one as security camera for my back yard gate to watch intruders. I already finished one of the charger and it looks really really impressive with the blue silkscreen! I'll maybe upload some pics of my assembled pcb's and bare pcb's soon for other peaple to check and i am probably going to clone the adafruit powerboost 1000 charger too!(because its cheaper offcourse, i still bought a lot of products from adafruit so i am still supporting them). The pcb's are of good quality, no broken or half traces, all boards are straight and not bend, all boards got the silkscreen and white text right so they just look amazing! I really really recommend this service to everyone and i am defenitly going to try their 4 layer too some time!! And they also offer cheap assembly services so maybe i will try that sometime too! Since i am very very and very happy with my pcb's i am defenitly buying from them again and again in the future and recommend them to everyone! So now i want to know who else used this service and had good experience or wants to try it out? hope to hear from you all!
  7. Hi dear friend! Fast and cheap PCB prototype & assembly service provider here, exporting CUSTOM PCB and PCBA with competitive price and high quality(parts sourcing included), specialized in low volume quantity. All fabricated and assembled as per your requirments,no MOQ limited and exclusive customer service available here! Our Advantages >Most competitive price, no tooling cost; >One stop turnkey service saves your time & cost; >Components sourced and bought from authorized distributor with competitive price; >Free stencil cost for assembly order; >Full range of capacities to satisfy customers' requirements; >100% flying probes & AOI test; >No MOQ limited; >Quality guaranteed, you can focus on your core competencies; >Outstanding customer service and technical support ; Please just feel free to send file with specifications to sales@pcbnpi.com for a quotation,or you can submmit quotation on our site www.pcbnpi.com . We will reply you ASAP. Thank you for reading!
  8. As a hobbyist,I learned so much from here and thanks very much for everyone. As pcbway manager,here is a good news I think will help hobbyist. In order to express our gratitude and help electronic hobbyist save cost,now we build a page to sponsor electronic hobbyist's pcb project (up to $100 coupon to your account),you can get the details from our sponsorship page.If you have any questions and suggestions,please reply to me here. The sponsorship link is here, (If this link break the rule,please tell to me and I will delete it,thanks Administrator)
  9. Fast PCB prototype & assembly service provider here, exporting CUSTOM PCB and PCBA with competitive price and high quality, specialized in low volume quantity,parts sourcing included. All fabricated and assembled as per your requirments, no MOQ limited ! The Ideal Choice For a New Product Development / Testing and Verification of Designs. Our Advantages >Most competitive price, no tooling cost; >One stop turnkey service saves your time & cost; >Components sourced and bought from authorized distributor with competitive price; >File review and professional NPI service; >Full range of capacities to satisfy customers' requirements; >100% flying probes & AOI test; >No minimum PCB order; >Quality guaranteed, you can focus on your core competencies; >Outstanding customer service and technical support; Pls just feel free to send file with specifications to sales@pcbnpi.com for a quotation,or you can submmit quotation on our site www.pcbnpi.com . We will reply you ASAP.Looking forward to your prompt reply. Thank you! With kind regards, ------------------------------------------------------------------------------- Sunny Duan Sales Manager of PCBNPI Co.,Ltd., Tel:+86-13221099899 Skype:sunnyduan123@outlook.com Professional PCB Manufacturer & Assembler, Focus on Quality and Efficiency.
  10. Hey all! Affordable cost for PCB prototype & assembly service, exporting CUSTOM PCB and PCBA with competitive price and high quality, specialized in low volume quantity, all fabricated and assembled as per your requirments.We specializing in PCB & PCB assembly service and we have been engaged in this lines over 10 years. Our Advantages >Most competitive price, no tooling cost; >One stop turnkey service saves your time & cost; >Components sourced and bought from authorized distributor with competitive price; >File review and professional NPI service; >Full range of capacities to satisfy customers' requirements; >100% flying probes & AOI test; >No minimum PCB order; >Quality guaranteed, you can focus on your core competencies; >Outstanding customer service and technical support; PCBNPI is your ideal choice for a new product development / testing and verification of designs.Pls just feel free to send file with specifications to sales@pcbnpi.com for a quotation,or you can submmit quotation on our site www.pcbnpi.com . We will reply you ASAP. Thank you for reading! PCBNPI Co.,Ltd.,-----Professional PCB Manufacturer & Assembler, Focus on Quality and Efficiency.
  11. lights shine

    BGA & QFN

    Two questions: 1. How to guarantee the quality of BGA and QFN ? 2. What shall be minded for halogen-free process ?
  12. YuCha Electronics Co.,Ltd , a leading PCBA Company offering high quality Printed Circuit Board Assembly moved its pcba factory from Taiwan to DongGuan City in the year of 1999, focusing mainly on PCB Assembly & PCBA fabrication, and have our own PCB Board manufacturing lines. Yucha owns 25 years of electronic experience in China of PCBA manufacturing, we have been always working on improving PCB assembly and PCBA soldering technics, engineers gain knowledge and strength with us together. for more information visit: http://www.joga-pcba.com
  13. For almost all the electronic engineers (EEs), it's their daily activity to design printed circuit board. However, no matter they are full of experience or a green hand in this field, it's not an easy job to design circuit boards with high quality. A lot of elements have to be taken into consideration. First of all, requirements in terms of functions must be fully met, of course, which in itself contains many details such as the routing design, schematic design, component placement and more. Besides, other aspects must be considered as well, including the schedule and cost. This passage will provide some tips of how to design high-quality PCBs. A good beginning is half done. All PCB design begins with some needs. For EEs, the needs usually come from customers. The first job of EEs is to convert customers' needs into electronic language and logic based on which the circuit schematic can be generated. Schematic can be regarded as the blueprint manufacturers must strictly follow in the process of PCB production. It directly influences the operating effect of PCBs. The main content of schematic contains the functions of PCBs, the design's characteristics, the interconnections between circuits and components, component placement and more. Besides, the "hardware" PCB requires has to be mentioned as well, such as the temperature requirement, the material of PCB and components because they play a significant role in the smooth operation of PCBs. Fine feathers make fine birds. In the case of PCB, fine BOM (Bill of Material) makes accurate PCBs. The generation of BOM is done at the same time with the schematic. The BOM represents the list of components used on the printed circuit board and should be compatible with schematic. Once the design of the circuit is completed, the BOM list is passed on to the PCB layout engineer as well as component engineer who will procure the components required for the design. The selection of components not only depends on the analysis in terms of the maximum operating voltage and current of the circuit with tolerance criteria considered, but on the availability, cost and size of components as well. The BOM must contain five aspects of requirement on components: 1. Quantity: the number of each type of components. 2. Reference designators: the identification of a component in a circuit on a PCB. 3. Value: numeric value of ohms, farads, etc. 4. Footprint: the locations of each component. 5. Manufacturer part number. Up to now, all the documents a PCB design requires have been achieved, including hardware size graph, schematic, BOM, layout files, component placement files, assembly graphs and instruction, and Gerber files. Where should they be? Each component has its own place on a PCB. The determination of the components' places is based on thermal management, function and electrical noise considerations. The component placement goes the following order: connectors, power circuits, sensitive and precision circuits, critical circuit components and then the rest. After individual components are placed at the suitable places on the PCB, a test must be carried out to verify the smooth operation so that some adjustments can be made for ideal performance. Then it's time to consider and adjust placement and package sizes based on size and budget. Basically, if components are capable of accepting power more than 10mW or conducting current over 10mA, they should be reconsidered in terms of thermal and electrical management. Routing All the components are interconnected on PCBs through traces realized by routing. Some elements must be taken into the considerations including power levels, noise sensitivity or generation and routing capability. Basically, traces with a width of 10 to 20mils are capable of carrying the current of 10 to 20mA and 5 to 8mils of carrying current lower than 10mA. For high-frequency and rapidly changing signals, more attention should be paid when they are routed with high-frequency nodes. Thermal management In the process of operation, the heat will definitely be a problem. The perfect thermal design is capable of keeping the whole board at the same temperature. However, a lot of elements will lead to the component temperature changes including copper thickness, layer number, board size and thermal paths design. There are some methods to reduce operating temperatures. First, solid ground or power planes with more layers can be directly connected to the heat sources. Second, the heat transfer can be optimized by the establishment of effective heat and high-current routes. Third, maximizing the area used for heat transfer can lower the temperature. Of course, it must be carried out within the demanding size. Checks Almost all the details of a PCB have to be involved in the final check. At this time, design rule checking (DRC) is picked up. DRC is capable of determining whether the physical layout of a particular chip layout satisfies a series of recommended parameters called Design Rules. It is a major step during Physical verification signoff on the design, which also involves LVS (Layout versus schematic) Check, XOR Checks, ERC (Electrical Rule Check) and Antenna Checks. For advanced processes some PCB manufacturersalso insist upon the use of more restricted rules to improve yield. PCB design may be a toughing job, but it's possible that everybody can be good at it as long as he or she holds some technique and insist on it. Hopefully, the tips in this passage will be beneficial to EEs' jobs. Suggestions to reduce cost of new product development 1.Repeated verificate of your schematic design mentality and diagram with your team; 2.configuration parameters (like design rule etc) well; 3.Manage your package library ( and other library )well; 4.Try to place all SMT parts on ONE site to reduce assembly cost;(double sides is much expensive than single side); 5.Select a professional and competitive PCB produce and assembly partner,who can provide ONE STOP service,not only low volume,but also large quantities; 6.Prototype and debug first, after all are fine, then start mass production; 7.Make some replacement for connectors, terminals,resistors,capacitors etc.You can find most of them in China. Also you can ask your assembler to do it for you. A professional PCB manufacturer & assembler recommendation Fast PCB prototype & assembly service provider here, exporting CUSTOM PCB and PCBA with competitive price and high quality, specialized in low volume quantity,parts sourcing included. All fabricated and assembled as per your requirments,no MOQ limited ! Our Advantages >Most competitive price, no tooling cost; >One stop turnkey service saves your time & cost; >Sourcing Chinese substitutes for free; >Components sourced and bought from authorized distributor with competitive price; >File review and professional NPI service; >Full range of capacities to satisfy customers' requirements; >100% flying probes & AOI test; >No minimum PCB order; >Quality guaranteed, you can focus on your core competencies; >Outstanding customer service and technical support; Pls just feel free to send file with specifications to sales@pcbnpi.com for a quotation,or you can submmit quotation on our site www.pcbnpi.com . Professional PCB Prototype & Assembly Turnkey Service For Low Volume Quantity
  14. PCBGOGO -Custom PCB Prototype Manufacturer ,is provide the best ever service in quick-turn PCB prototype, low & medium volume and low cost.The best PCB(printed circuit board) buying experience in the country today .PCBGOGO is committed to provide short and accurate lead time for PCB manufacturing job.The quickest lead time PCBGOGO can do is 12hours. And PCBGOGO has Instant online quote and detailed tracking system which will inform you the each process of the PCB boards. www.pcbgogo.com/f And now big promotion is coming.don't miss it.
  15. (This is my 1st post in this forum and I will post many post in the near future. ) Printed circuit board design software This electronic design software is a license software professional edition. This is a PCB Wizard Professional edition with learning samples. This printed circuit board design software uses latest transistors, ICs, Resistors, Condensers, Triacs, Logic gates, Input also output components, digital meters, analog meters also oscilloscope also includes many type of Pin types. Just like SIL, DIL, and DO Etc. This printed circuit board design software[highlight #000000][color #000000][/highlight] packages includes 01 PCB Wizard Professional Unlimited Edition 02 Livewire Professional Edition 03 Bill of Materials Database Update 04 Examples Here is the download link of printed circuit board design software. http://tinyurl.com/zq9sd8f I will upload it soon. It’s Includes new facility to do more works. In the near future we will upload it to this playlist and wait for the latest update.
  16. Hey dear friend ! Low cost PCB Prototype & Assembly service provider here, exporting CUSTOM PCB and PCBA with competitive price and high quality, specialized in low volume quantity, all fabricated and assembled as per your requirments. Our Advantages: >DFM File Review and Professional NPI Service; >Special Part Sourcing; >100% Flying Probes & AOI Test; >Free Laser Cut Stencil For Assembly Job; >No MOQ! For more information and promotion, pls vist http://www.pcbnpi.com/ Your reply will be highly appreciated. Thanks again! Best Regards Sunny PCBNPI TECH E-mail: sales@pcbnpi.com Tel:+86-13221099899 PCBNPI TECH--Professional PCB Fab / PCB Assembly Service Provider From China.
  17. I have a PCB fabricator line which is specialized for electrical DIY lover or electrics engineers. All the fabricated PCB will be tested and ensured the quality. The fabrication of 5 pics usually costs 12-14 bucks for 100mm*100mm 2 layer board depending on the design. If you need the PCB very soon, I can get it for you as soon as 5 working days. Here is the basic stand of my fabrication: Layer: 1-10min trace width/ distance: 0.1mmmin via diameter: 0.15mmcooper thickness: 1oz/2oz/3ozblind/buried via: unavailableSolder Mask colour: Green, Red, Yellow, Blue, White and BlackIf my services suit to your needs, you can contact me by Email. I can get you a coupon or some nice gift from fabricator partner. Email: certainly.90@gmail.com