I am wondering if there is any difference (apart the size) between two SMD components who have same characteristics but different size, example:
RESISTOR, THICK FILM, 100k, -5%/+5%, 0.063W, 50V, -55DEGC/+155DEGC, 0402, SMD
RESISTOR, THICK FILM, 100k, -5%/+5%, 0.063W, 50V, -55DEGC/+155DEGC, 0603, SMD
If no differences, then why bill of materials and design don't use a single size instead of varying 0402, 0603, 0805 ?
Best Answer
Couple of reasons may come into play:
Without seeing the board and the application, it's hard to tell.