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The advantages of solid aluminum capacitor

　　Solid aluminum capacitors with solid conductive polymer as the electrolyte, with excellent characteristics of solid conductive polymer materials, solid aluminum capacitors in the excellence. Its advantages are as follows:
　　1) properties of solid aluminum capacitors of the best is that it has excellent impedance frequency close to an ideal capacitor, have very low impedance value 100KHz ~ 1MHz wide frequency range (see Figure 1), therefore particularly suitable as a filter capacitor to remove the ripple, in the circuit, the digital pulse electrostatic, and audio etc. various noise;
　　Figure 1 comparison frequency characteristics of solid aluminum capacitors and other types of capacitor
　　2) solid aluminum capacitor allowable ripple current through the large, so can be used as a switching power supply filter capacitor, greatly reducing the use of capacitors in quantity or volume, the size of the circuit (see Table 1);
　　Capacitor type
　　PolyCap
　　Solid capacitor
　　Low ESR
　　The liquid capacitance
　　Low ESR
　　Tantalum capacitor
　　Capacitor specifications
　　6.3V220 μ
　　6.3V820 μ
　　10V220 μ
　　Capacitor size (mm)
　　A 6.3 x 7
　　A 10 x 10
　　7.3 x 4.3
　　The ripple voltage value
　　21.6mV
　　22.1mV
　　22.8mV
　　The capacitor in the circuit
　　Loading area ratio posted
　　1
　　7.16
　　1.45
　　The number of capacitors
　　1
　　3
　　2
　　Table 1 at ambient temperature for 25 ℃ filter ripple ability of each capacitor
　　3) solid aluminum capacitors can fast discharge, can be used as a backup capacitor for high speed circuit consumes a large current;
　　4) the temperature characteristics of solid aluminum capacitor is excellent, can maintain the capacity stable over a wide temperature range (see Figure 2), and the ESR value hardly change with the temperature change (see Figure 3), therefore, can be applied to the low or high temperature environment of equipment;
　　Fig. 2 different types of capacitance temperature change curve
　　ESR- temperature Fig. 3 Variation of liquid, solid aluminum capacitor
　　5) solid conductive polymer materials are not volatile, not easy to loss, in use, therefore, the actual service life of solid aluminum capacitor is much longer than the liquid aluminum capacitor;
　　6) solid aluminum capacitors safety is far better than that of liquid aluminum capacitor;
　　7) solid aluminum capacitor without any difference in appearance and traditional liquid aluminum capacitor, the customer is not necessary to change the circuit board structure, according to the need of design