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

2/ 12

KMM Series

KMM Specifications - Snap Mount

Item

Category Temperature Range

25 to 105 C

Rated Voltage Range

160 to 450VDC

Capacitance Range

39 to 3,300 F

Capacitance Tolerance

20% ( M ) at

20 C, 120Hz

Leakage Current

I

≤ 3 CV ( A) after 5 minutes at 20 C.

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

Characteristics

Rated Ripple Current Multipliers

Ambient Temperature ( C)

45 C

2.64

60 C

2.23

70 C

2.12

85 C

1.73

105 C

1.00

Frequency (Hz )

DC Rated Voltage

160 - 250V

315-450V

50Hz

0.81

0.77

120Hz

1.00

1.00

300Hz

1.17

1.16

1kHz

1.32

1.30

10kHz

1.45

1.41

50kHz

1.50

1.43

Rated Voltage ( V )

Tan

( DF ) Max.

160 - 400

0.15

420 - 450

0.20

Dissipation Factor ( Tan )At

20 C, 120Hz

Rated Voltage ( V )

Z( 25 C) / Z ( 20 C)

160 - 400

4

420 - 450

8

Low Temperature

Characteristics

At 120Hz, impedance ( Z ) ratio between the

25 C value and

20 C value shall not exceed

the values given below.

Shelf Life

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

20 C after

exposing them for 1,000 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:

≤ 15% of initial measured value

Tan

(DF)

:

≤ 150% of initial specified value

Leakage current

:

≤ initial specified value

Endurance

(Load Life)

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

20 C

after subjecting them to DC voltage for the specified test time 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% of initial measured value

Tan

(DF)

:

≤ 200% of initial specified value

Leakage current

:

≤ initial specified value

Case Diameter

Test Time

Ø

20mm

2,000 Hours

Ø

22mm & Above

3,000 Hours

Engineering Bulletin Mar 07