The Differences Between Electrolytic Capacitors, Solid Polymer Capacitors and Hybrid Capacitors
Electrolytic capacitors, solid polymer capacitors and hybrid capacitors are all types of capacitors used in electronic circuits. Each type has its own advantages and disadvantages depending on the specific application.
Electrolytic Capacitors
Electrolytic capacitors are a type of capacitor that uses an electrolyte to store charge. They are generally inexpensive and offer high capacitance values, making them ideal for use in power supply circuits. However, they have higher ESR (Equivalent Series Resistance), than solid conductive polymer capacitors and may not be suitable for high-frequency applications. They also have a shorter lifespan than other types of capacitors and may be susceptible to leakage.
Solid Conductive Polymer Capacitors
Solid conductive polymer capacitors are a type of capacitor that uses a conductive polymer material as the electrolyte. They offer low ESR, high ripple current capability, and a long lifespan. They are also generally smaller than electrolytic capacitors, making them ideal for use in compact electronic devices. However, they may not be suitable for applications that require high capacitance values.
Hybrid capacitors
Hybrid capacitors combine the advantages of both electrolytic and solid conductive polymer capacitors. They use a combination of aluminium and conductive polymer materials, resulting in low ESR, high ripple current capability, and a high capacitance value. They are also generally more reliable than traditional electrolytic capacitors and have a longer lifespan. However, they may be more expensive than other types of capacitors.
Summary of Differences
In summary, electrolytic capacitors are generally inexpensive and offer high capacitance values but have higher ESR and a shorter lifespan. ]
Solid conductive polymer capacitors offer low ESR, high ripple current capability, and a long lifespan but may not be suitable for high capacitance applications.
Hybrid capacitors combine the advantages of both solid conductive polymer and electrolytic capacitors, but may be more expensive.
Which Capacitor Should I Use?
The choice of which capacitor to use depends on the specific requirements of the circuit and the application, and selection may initially appear daunting when so many different options are available. However, with DMTL’s in-depth knowledge of manufacturer's offerings, along with direct access to application specialists - allows technical & commercial requirements to be understood from the outset ensuring that the right capacitor is selected for your application, every time.
DMTL is a fully franchised distributor for CapXon, Cornell Dubilier, Kyocera AVX and Suncon. All of which offer some, or all, of the three different type of capacitors.
Downloads
- CapXon Electrolytic Radial Catalogue
- CapXon Electrolytic SMD Catalogue
- CapXon Solid Polymer Catalogue
- CapXon Hybrid Catalogue