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TCs are electrolytic capacitors that use tantalum as the anode material and passivated tantalum pentoxide as the dielectric. The advantages include greater capacitance per unit area and stabler voltage and temperature characteristics than large capacitance ceramic capacitors.
·Capacitor Comparison
Type
Aluminum Electrolytic Capacitor
Multilayer Ceramic Capacitor
Tantalum Capacitor
Film Capacitor
Dielectric
aluminum oxide
several ceramics
tantalum pentoxide
plastic film
Working Voltage
4 to 400V
6.3 to 250V
2.5 to 50V
50 to 1600V
Capacitance
47 to 10000µF
0.001 to 100µF
0.47 to 1000µF
0.001 to 10µF
Advantage
Wide array of breakdown voltages and capacitances
Good high frequency characteristics No polarity
Small package, Large, stable capacitance
High breakdown level No polarity
Disadvantage
Electrolyte leakage limits life Large package size There is polarity
Capacitance varies depending on voltage and temperature Cracking/chipping possible