7

ELECTROLYTIC ALUMINUM CAPACITORS

Revision 01/19

www.exxelia.com

Tel : + 33 (0)2 40 01 26 51

ELECTROLYTIC ALUMINUM CAPACITORS

7

Revision 01/19

www.exxelia.com

Tel : + 33 (0)2 40 01 26 51

4.4. DISSIPATION FACTOR TAN

The dissipation or loss factor is defined by its tangent Tan

4.5. EQUIVALENT SERIES RESISTANCE ESR

The relation between ESR and dissipation factor Tan is given in § 4.4.

4.6. IMPEDANCE Z - INDUCTANCE L

The impedance is given by:

Z =

g R2 + (L –1 )2

C

L inductance. Generally L = 5 to 20 nH

Z and ESR as function of frequency typically follows the chart:

4.7. PERMISSIBLE RIPPLE CURRENT (I r.m.s.) I~

The current is defined at the maximum climatic category and at 100

Hz. It is the root mean square value r.m.s. The value I0 is the rated

value for calculations of expected life up to3 I0.

4.8. LEAKAGE CURRENT Il

Il is measured at 20°C after a 5 min. polarization under rated voltage.

For CR in µF and UR in V:

Il ≤ 0,01 CR UR or 1 µA*

when CR UR ≤ 1000 µC

Il ≤ 0,006 CR UR + 4 µA

when CR UR > 1000 µC

For UR > 350 VDC it can be specified:

with K = 4, 6 or 8

or

Il ≤ 0,3 (CR UR)0,7 + 4 µA (CECC 30 300)

* Whichever is the greater

4.9. CHARACTERISTICS

Versus temperature (typical values).

4.9.1. Capacitance drift

Versus temperature

4.9.2. ESR and Z drifts at 100 Hz

Versus temperature

4.9.3 Leakage current drift

Versus temperature

General technical data