U36D Series

United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com

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U36D Specifications - Screw Terminals

Item

Category Temperature Range

40 to

85 C

Rated Voltage Range

6.3 to 550VDC

Capacitance Range

68 F to 2.2F at

25 C, 120Hz

Capacitance Tolerance

20% ( M ) at

25 C, 120Hz

Endurance

(Load Life)

The following specifications shall be satisfied when the capacitors are restored to

25 C after

subjecting them to DC voltage for 2,000 hours at

85 C with the rated ripple current applied.

The sum of the DC voltage and peak AC voltage must not exceed the full rated voltage of

the capacitors.

Capacitance change:

≤ 20% from initial measurement

ESR change

:

≤ 300% of initial specified limit

Leakage current

:

≤ initial specified limit

Shelf Life

The following specifications shall be satisfied when the capacitors are restored to

25 C after

exposing them for 500 hours at

85 C without voltage applied. The rated voltage shall be

applied to the capacitors for a minimum of 30 minutes, at least 24 hours and not more than

48 hours before the measurements.

Capacitance change:

≤ 20% from initial measurement

ESR change

:

≤ 300% of initial specified limit

Leakage current

:

≤ initial specified limit

Characteristics

Leakage Current

I

0.02CV ( A ) or 5mA, whichever is smaller, after 5 minutes at

25 C.

Where I = Max. leakage current ( A ), C = Nominal capacitance ( F ) and V = Rated voltage ( V )

Rated Ripple Current Multipliers

Ambient Temperature ( C)

≤ 55 C

2.39

65 C

2.22

75 C

1.67

85 C

1.00

Frequency (Hz )

3kHz

1.4

1kHz

1.3

300Hz

1.1

120Hz

1.0

50Hz

0.8

Engineering Bulletin Mar 07