U32D 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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U32D Specifications - Screw Terminals

Item

Category Temperature Range

40 to 105 C

Rated Voltage Range

6.3 to 400VDC

Capacitance Range

180 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

105 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

:

≤ 200% of initial specified limit

Leakage current

:

≤ initial specified limit

Shelf Test

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

25 C after

exposing them for 500 hours at

105 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

:

≤ 200% 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)

≤ 45 C

1.41

65 C

1.29

85 C

1.00

105 C

0.57

Frequency (Hz )

Case Diameter

Ø

Ø

35

Ø

Ø

35

Ø

51

Ø

Ø

35

Ø

Ø

76

Ø

50Hz

0.95

0.90

0.95

0.82

0.90

0.95

0.80

0.81

0.82

0.80

120Hz

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

300Hz

1.03

1.06

1.03

1.12

1.06

1.03

1.19

1.14

1.12

1.19

1kHz

1.05

1.10

1.05

1.22

1.10

1.05

1.34

1.26

1.22

1.34

10kHz

1.09

1.18

1.09

1.30

1.18

1.09

1.46

1.36

1.30

1.46

50kHz

1.12

1.22

1.12

1.33

1.22

1.12

1.52

1.41

1.33

1.52

DC Rated Voltage

6.3 - 50V

63 - 80V

100V

160 - 250V

315 - 400V

Engineering Bulletin Mar 07