Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Search results

  1. M

    Signal Integrity question...

    Hi to all, this is the first time for me,to consider SI issues. What's the correct flow to take in this case ? I think : 1) Define stackUP with the supplier 2) Define PCB Impedence (but I don't know the right value 50?...70? how I decide it ?) 3) calculate the right width trace for each layer...
  2. M

    Soldering footprint SSOP

    ssop footprint Hi to all, somebody have used on pcb production, footprint SSOP20 on bottom side, with wave soldering ? Or pitch 0.65 is too close to soldering ? mkbs
  3. M

    The latest version of 3D IDF Files

    Hi to all, somebody know the last version of IDF file ? I mean... I know that there's a version 3 that "give" to the solid cad only 1 hight information for component,but I heard that there is a version 4.0 that give more hight information,isn't it ? Somebody know about that ??? mkbs
  4. M

    Wave Soldering 0.65mm pitch component

    Hi to all, somebody had soldered on wave process a ssop pitch 0.65mm component, on bottom side ?? I have on production a 0.8mm component wave soldered and the quality of soldering is good (with a little end pads adjustment). mkbs
  5. M

    Question about power plane in 4-layered PCB

    Hi to all, I'm going to design a new pcb with 4Layer (Top-Pwr-Gnd-Bottom),but now in this project I have a zone with 220V (Transformer - connectors - ptc .....) and I don't know if: • I have to delete all plane in this zone (completely remove internal copper) • or just respect the constraint...
  6. M

    Someone use Ultiboard 7 ?

    ultiboard 7 Hi to all, someone use Ultiboard 7 ? I have seen on web site that it have many new features, is realy improved (no crash,not slow place...) ? MKBS 8)
  7. M

    Propagation Times in Asymmetric MicroStrip envirnoment

    Propagation Times Hi to all, I have a question about Propagation Times: I have seen on many articles that the Prop.Time in StripLine is PT=SQ”Er”/11.8 ns/in and in MicroStrip environment is: PT=Fraction*(PT in StripLine) But, if I have an Asymmetric MicroStrip environment what I have to do ...
  8. M

    How to delete the copper plane (Top or Bottom) on Protel 9?

    Help on copper plane Hi to all, I need help !!! how I can delete the Copper plane (Top or Bottom) on Pr@tel99SE. I have seen that I can't delete planes all together.I have tried with Select --> Connected copper but I can' t deleted the selected copper. Tanks in advantage MKBS :(
  9. M

    Question about timing in Protel DXP

    P@otel DXP Timing Hi to all, is possible on P@otel DXP to set Delay time (or Length), differential pairs and daisy chain (or custom) nets order ? Many Tanks mkbs :D
  10. M

    What is the GND Copper Plane for in MultiLayer Board?

    GND Plane I have seen some MultiLayer Board ( 6-8Layer with 1or2 GND plane ), with on top and bottom a GND Plane Copper. Is It necessary for what?... shieding board or other ? And if necessary where I have to join this Copper Plane? All GND Plane (External & Internal) together with via ...
  11. M

    Questions about using P-CAD2002 sp1

    About P-CAD2002... Hi to all, I'm trying P-CAD2002 SP1.I have some questions: - When I re-route a trace the 'loop' (the old trace) didn't delete. Is there a flag or setup to do this command ? - Can P-CAD import nVisage schematic and back annotate to it? Many tanks mkbs :D
  12. M

    Precaution for trace from Connector to Filter (input uP pin)

    About analog noise Hi to all, about wiring to analog input uP pin,I put the filter (R-C) close to uP pin ( like described on Datasheet ), but what kind of precaution I have to do with trace from Connector to Filter ? uP <--FilterRC-------<-------<------ Trace > 100 mm...
  13. M

    Signal Integrity Suggestions

    Hi to all, Could you tell me where I can found a good book or PDF to learn about signal integrity,crosstalk... ? I have only a school book with some suggestions and many formulas ( very strange and complicate ). I need pratical suggestions without formulas (if possible !) about delay...
  14. M

    CadINT PCB - any opinions?

    cadint pcb What do you think about CadINT PCB ? Someone Use it ? :) mkbs
  15. M

    general EMC rules to route micro wires

    General EMC rules Hi, I'd like to know some general EMC rules to route micro wires , ( like reset circuit and so on...), to route a pcb with the smallest number of errors. Thanks.:wink: mkbs 8) 8)
  16. M

    Easy-PC & Drill symbols/table - demo and full version?

    Easy-PC & Drill Hi to all, I have seen,for my little pcb (max 800 pins), Easy-PC from Number One System. From the Demo version I haven't seen if it create a drill symbols/table to gerber file. Does someone use it? mbks. :?: :) :?:

Part and Inventory Search