11

ELECTROLYTIC ALUMINUM CAPACITORS

Revision 01/19

www.exxelia.com

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

ELECTROLYTIC ALUMINUM CAPACITORS

11

Revision 01/19

www.exxelia.com

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

8. INFORMATION ON APPLICATION

8.1. CLEANING SOLVENTS

Use aliphatic alcohols, such as denatured ethyl alcohol, isopropanol,

or butylacetate, or else alkaline d Iluted solutions. Avoid incompatible

solvents (halogenous for example).

8.2. SHELF LIFE

There is no electrical characteristics variation for long periods of stor-

age except leakage current which can increase.

It is caused by chemical reactions between the dielectric alumina

and the electrolyte. These reactions are reversible when switched on.

Capacitors can generally be stored at temperature between –5° and

+50°C without reforming for the following periods of time:

• For UR ≤ 100 V, storage time: ......................5 years

(up to 10 years under specific conditions)

• For 100 V < UR ≤ 360 V storage time: ........3 years

• For 360 V < UR < 500 V storage time: ..........1 year

• For UR ≤ 500 V, storage time: ................. 6 months

Generally when these periods are overstepped, one hour at rated volt-

age causes the decrease of leakage current under the specified lim-

its. An other way to avoid this leakage current increase problem is to

always limit ava Ilable power through capacitor during first seconds

or minutes after storage or transport, according to the following chart:

8.3. LOW PRESSURE RESISTANCE

EXXELIA capacitors can be used with ambient low pressure decreas-

ing up to 10 mbar (altitude 28000 m – 92000 feet).

8.4. MOUNTING SCREW TERMINALS CAPACITORS (FELSIC)

Capacitors may be used vertically (terminals on top) or horizontally.

When used horizontally, the following position in relation to the safety

vent, is recommended:

Mounting capacitors in series may be used for operating voltage ex-

ceeding UR. See FELSIC in bank.

8.5. MOUNTING SOLDER TYPE CAPACITORS.

They may be used in any position. During mounting, avoid applying

excessive force to capacitor pins or wires. There is a risk of damaging

internal connections.

After soldering and for the same reasons, do not try to move the ca-

pacitor's body.

8.6. ELECTROLYTES: SAFETY RULES.

Electrolytes used in EXXELIA capacitors are manufactured by

EXXELIA. Main solvents are generally butyrolactone and ethylene

glycol, very stable high boiling point solvents. Ionic conductive salts

in electrolyte induce a very weak acidity (pH 5 to 7).

8.7. ENVIRONMENT.

In aluminium capacitors with liquid electrolyte there is no component

showing a pollution risk, in small amounts, of air or water. EXXELIA is

always involved in this security field particularly in using chemicals

for electrolyte, without well-known risks.

• Dimethylformamide(DMF)dangeroussolventforbiddeninsev-

eral uses is completely excluded by EXXELIA,since 1990.

• Thereisnohalogencompoundsuchaschlorofluorocarbon(CFC

or FCKW in german) or polychlorobiphenyl (PCBPyralene) or

pentabromodiphenylether or octabromodiphenylether.

There is neither benzene, toluene or phenyl compound nor explosive

such as picric acid, nor asbestos in plastic covers. All the capacitors

made by EXXELIA since 1991, can be scrapped or used in raw materi-

als recycling processes without special care in compliance with Com-

munity rules.

EXXELIA aluminium capacitors with non-solid electrolyte are particu-

larly suitable for different kinds of environment taking in account se-

verity increasing laws.

European directives 2003/11/EC, 2002/96/EC (WEEE) and 2002/95/

EC (RoHS) applies to all EXXELIA capacitors including every solder

type, manufactured with pure tin coated pins or wires, since at least

January 2006.

Prominent negative polarity indicator [except Ø90 (3,543)]

General technical data