There are various types of capacitors suitable for decoupling, but each differ by electrical performance, polarity and cost. The following are some common capacitor tips which may help you to select the right type of decoupling in your application.
| Capacitor Types | Advantages | Disadvantages | Application Examples |
|---|---|---|---|
| Ceramic Capacitor | Lower ESR and ESL | Capacitance range is limited | Good at high frequency applications |
| Cost effective solution | Capacitance decreases related to the voltage and temperaure coefficient | ||
| Aluminum Electrolytic Capacitor | High capacitance | Degrade over time and temperaturewearout | Consumer Products, Large bulk storage |
| Low cost | High ESR and Large Size | ||
| Aluminum Polymer Capacitor | Very Low ESR | Rapid degradation aboce 105⁰C | CPU core regulators |
| Relatively small case | Relatively high cost | ||
| Tantalum Capacitor | Low ESR and ESL | Fire hazard in reverse voltage | Popular in military |
| Very stable over time | Limited rated voltage of 50V | ||
Here’s a few related articles that can help you better understand to select and apply decoupling capacitor:
Kemet article: Don’t Choose the Wrong Decoupling Capacitor