KMA Specifications
KMA Series
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com 123
Lead Length: LL is Standard.
Case Code: See Case Sizes in Tables.
Capacitance Tolerance: M = 20%
Capacitance Value: Expressed in Microfarads. The first two digits are
significant figures, and the third digit indicates the number of zeros
for capacitance of 100F or more. R indicates the decimal point for
capacitance less than 100F (e.g. R47= .47F; 4R7= 4.7F;
47R = 47F; 471= 470F; 472 = 4,700F; 473 = 47,000F).
Lead Configuration: VB = Radial Lead Terminals.
DC Rated Voltage: Expressed in Volts (e.g. 25 = 25WVDC).
Series Name: Indicates Basic Capacitor Design.
Part Numbering System for KMA Series When ordering, always specify complete catalog number for KMA Series.
KMA 25 VB 47R M 6X7 LL
Item
Operating Temperature Range 55 to
105C
Rated Voltage Range 4 to 63VDC
Capacitance Range 0.1 to 220F
Capacitance Tolerance 20% (M) at
20C, 120Hz
Leakage Current I 0.01CV or 3A, whichever is greater, after 2 minutes at
20C.
Where I = Leakage current (A), C = Nominal capacitance (F) and V = Rated voltage ( V )
Characteristics
Shelf Life
Others
The following specifications shall be satisfied when the capacitors are restored to
20C
after exposing them for 500 hours at
105C 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: ≤25% of initial measured value for ≤16V
: ≤20% of initial measured value for ≥25V
Tan (DF) : ≤200% of initial specified value
Leakage current : ≤initial specified value
Satisfies characteristic W of JIS C5141
Load Life The following specifications shall be satisfied when the capacitors are restored to
20C after
subjecting them to the DC rated voltage for 1,000 hours at
105C. The sum of DC voltage
and peak AC voltage must not exceed the full rated voltage of the capacitors.
Capacitance change: ≤25% of initial measured value for ≤16V
: ≤20% of initial measured value for ≥25V
Tan (DF) : ≤200% of initial specified value
Leakage current : ≤initial specified value
Rated Voltage (V )
Tan (DF)
6.3
0.22
4
0.35
10
0.19
16
0.16
25
0.14
35
0.12
50
0.10
63
0.08
Dissipation Factor (Tan )At
20C, 120Hz
50
2
3
63
2
3
Rated Voltage (V )
Z(
25C)/Z(
20C)
Z(
40C)/Z(
20C)
6.3
3
6
4
4
10
10
2
5
16
2
3
25
2
3
35
2
3
Low Temperature
Characteristics
At 120Hz, impedance (Z ) ratio between the 25C or 40C value and
20C value shall not
exceed the values given below.
KMA
MINIATURE -105C