Getting ready to populate some PCB's with ceramic capacitors. Do they have an orientation; positive - negative? If they do, how can you tell which is which.
PCB's also have some electrophlic capacitors. Understand they are polarized. One lead has a white stripe on the side with an enlongated retangle (maybe a negative sign). Is this the negative lead?
PCB's have different colors (light and dark green) on the silkscreening holes. Is this positive and negative?
Ceramic capacitors are unpolarized...generally any marking that you may see is usually for capacitors used in high-frequency applications.
Electrolytics are polarized.....the white stripe should have a minus sign indicating it as the negative side.
Silkscreening applied to PCB's is generally light green in color....any color variation is most likely due to whatever is below the silkscreening.....silkscreening will generally have a white plus sign indicating positve for electroytics.....a white dot on IC's generally indicated pin 1.....sometimes pin 1 will be a square pad.....
If you trace out the circuitry you can usally answer most of your questions with a schematic in hand.