What does the blue color of SMD resistors mean?
I saw a board with blue colored body resistors (and another one with green) as part of high voltage measuring circuit, so I am trying to figure if these resistors are special in some sense.
Electronic – Blue/green SMD resistor
resistors
Best Answer
They may well be special high precision, high resistance and/or high voltage resistors, but there is no standard coding for such features.
High precision (0.01%) resistors from Vishay are often robin's egg blue. I've seen non-magnetic resistors that are green.
It would help with inspection since such resistors may otherwise look the same as ordinary cheap resistors of the same physical size.