When choosing a capacitor combination, there are many issues to consider, such as what package to choose, what material, how much capacitance, how large is the interval between capacitances, what is the frequency of the main clock and its harmonics, the rise time of the signal, etc. This requires It is specially designed according to the specific design.
Typically, tantalum or electrolytic capacitors are used for board-level low-frequency decoupling. The calculation method of capacitance has been mentioned before. It should be reminded that it is best to use several or more capacitors in parallel with a small equivalent series inductance.