Having different types of capacitors (electrolytic, film, silicon, tantalum, etc.), which types would be the optimal choice for polar/non-polar pair in this common configuration:
I understand the reason for having two or more caps of different capacitance values. Though wonder, why does the pair includes a polar and a non-polar capacitor? Is it essential to include a polar capacitor, or it's OK to use two non-polar caps?
The application is for bypassing power supply for opAmps, ADCs, DACs, microcontrollers, and other low power ICs up to 100MHz bandwith. I know that electrolytic ones would be too big for surface mounting apps.