|FAQ Entry Author||Ken Smith|
|FAQ Entry Editor||Philip Freidin|
|FAQ Entry Date||1/17/2005|
Q.What are the main steps involved in circuit board design?.
1) Decide what the board should do. 2) Make a schematic that does that. 3) Decide the mounting issues. 4) Select the component packages. 5) Buy board layout software if you intend to do it yourself 6) Start placing the parts 7) Discover that they won't fit and loop back to 3 8) Finish placing 9) Start running the traces 10) Discover that you can't route as placed and loop back to 8 11) Finish routing 11) Check the proposed layout 12) Rip out large sections and loop back to 8 13) Check the improved version 14) Check it again 15) Make Gerber plots and an NC drill file 16) Check the Gerbers and drill file 17) Compose a README.TXT 18) Zip together the Gerber, NC drill and README.TXT 19) Get bids on making the board 20) Select a vendor and send off the files 21) Get a phone call from the vendor pointing out an error 22) Loop back to 11 and increase the ring on the vias etc 23) Get the boards from the FAB house. 24) Gather the parts needed 25) Discover that you can't get the MOSFET in a DPAK loop back to 4 26) Stuff the board 27) Apply power 28) Scrape the burning parts off your face 29) Replace the burned parts 30) Apply the right power the right way around this time 31) Begin debugging the board 32) Discover the errors that are not just part values 33) Loop back to 1 34) Prepair BOMs etc for the production build. 35) Fight off the accounting guy who wants to lower cost. 36) Make the pre-pre-production units 37) Correct the BOM and assembly drawings 38) Start testing the pre-pre-production units 39) Build the pre-production units 40) Do major testing 41) Discover that the specifications from marketing have changed 42) Loop back to 1
FPGA-FAQ FAQ Root