Capacitors Selection Guide
Product Map (Capacitance - Rated Voltage)
TDK has an extensive lineup of various capacitor types, which can support a wide range of capacitance and voltage values. Details can be viewed by clicking on the product types.
Comparison of features in main capacitors
The features of ceramic capacitors, aluminum electrolytic capacitors, and film capacitors vary as indicated below due to their differing dielectric materials and structures.
|Items||Ceramic Capacitors||Aluminum Electrolytic Capacitors||Film Capacitors|
|DC bias characteristics||✔*1||✔||✔|
*1 Type1 (temperature compensating) only
Features of each capacitor
The following is a list of the capacitor types in TDK's lineup and each of their features. Their details can be viewed by clicking on them.
|Ceramic Capacitors||SMD Type||Our compact SMD type capacitors with laminated dielectric ceramics possess outstanding high-frequency characteristics and heat resistance. They can be broadly divided into 2 types depending on their dielectrics: Type 1 products (temperature compensating) feature extremely small changes in capacitance due to temperature, while Type 2 products (high dielectric constants) are able to support relatively large capacitance values, but have larger rates of change due to temperature than Type 1.|
|Lead Type||These are laminated ceramic chip capacitors bonded to lead wires and coated with resin. They combine the characteristics of laminated ceramic chip capacitors with benefits such as reduced mechanical and thermal stress due to their lead wires, and insulation and temperature shielding effects due to their resin coating. They are also effective in measures against capacitor "singing".|
|These are disc-shaped ceramic capacitors with lead wires, able to support medium to high voltages up to 6 kV. Their outer resin coating is compliant with halogen-free specifications, and their lineup includes a safety standardized product series which has obtained safety standard certifications from various countries, as well as a series compliant with the AEC-Q200 standard required for passive components in automotive applications.|
|Aluminum Electrolytic Capacitors||These capacitors use an aluminum oxide film and electrolyte solution, featuring large capacitance but also having properties of polarity. TDK offers a varied lineup of aluminum electrolytic capacitors which includes radial lead, axial lead, screw terminal, and snap-in terminal types.|
|Film Capacitors||These capacitors use plastic film as dielectric with ultra-thin vacuum evaporated metallization layer. The self-healing capability is one of the main features. The capability to withstand a wide range of AC and DC voltages, together with high current and temperature, makes them suitable for many applications in the range from a few hundreds watts up to several megawatts.|
|Ultra High Voltage Ceramic Capacitors||These are ceramic capacitors which can support ultra-high voltages up to 50 kV. Their use of paraelectric ceramics makes them highly stable and reliable with regard to voltage. They also have excellent mechanical strength due to their simple structure.|
|CeraLink® Capacitors||Developed to stabilize the voltage of DC link circuits, our CeraLink® capacitors are remarkably compact with PLZT (lead lanthanum zirconium titanate) ceramics as their base materials. They show exceptionally low ESL (Equivalent Series Inductance) values and also have superb heat resistance.|
|Electric Double-Layer Capacitors
(EDLC / Supercapacitors)
|EDLCs are special capacitors with characteristics between those of a capacitor and a battery (secondary battery). By causing ions to adhere to the surface of activated carbon electrodes which have been soaked in electrolyte solution, an Electric Double Layer is formed to accumulate electric charge, giving these power storage devices extraordinarily large capacitance and energy density.|