There are also pin out issues. Lets say a circuit uses a 14 DIP op amp, there are thousands of op amps which would make the circuit work, but they may not all have the same pinout. The board layout would only work for components with a similar pin out. Many times, people use what they can get or what they have on hand and so you cannot always use the exact component called for in the schematic.
You're getting the schematic for free, don't be greedy about the board layout too!
Plus you will learn a lot more if you have to make your own layouts.
Matt |