bunrockter
Newbie level 6

When looking at reference designs for power regulators (LDO/Linear, switching, etc.) why are the input and ceramic output capacitors generally a 1206 case size? I can find a capacitor that is 0402 or 0603 with the same/similar voltage and ESR, the only difference I see is the temperature (X5R Vs. X7R).
The chip that I am looking at specifically calls out an 0805 P/N as an example in the datasheet, and the reference board that uses it populated a 1206 P/N. I found a 0603 that has the same ESR and the rated voltage is a little less but is still 4x more than the output voltage.
Thanks.
The chip that I am looking at specifically calls out an 0805 P/N as an example in the datasheet, and the reference board that uses it populated a 1206 P/N. I found a 0603 that has the same ESR and the rated voltage is a little less but is still 4x more than the output voltage.
Thanks.