Engineering Bulletin Mar 07
SMH Series
SMH Specifications - Snap Mount
Item
Characteristics
ꢃ
ꢀ ꢃ ꢀ
40 to 85ꢁC for 6.3 to100VDC; 25 to 85ꢁC for 160 to 450VDC
Category Temperature Range
Rated Voltage Range
Capacitance Range
6.3 to 450VDC
56 to 270,000ꢀF
ꢄ
ꢀ
20% (M) at 20ꢁC, 120Hz
Capacitance Tolerance
Leakage Current
ꢀ
I ꢆ 0.02CV (ꢀA) or 3mA, whichever is smaller, after 5 minutes at 20ꢁC.
Where I=Max. leakage current (ꢀA), C=Nominal capacitance (ꢀF) and V=Rated voltage (V)
ꢀ
At 20ꢁC, 120Hz
Dissipation Factor (Tan ꢁ)
Rated Voltage (V)
6.3
10
16
25
35
50
63-100
0.15
160-250 315-450
0.10 0.15
†
Tan ꢁ (DF) Max.
0.60
0.50
0.40
0.30
0.25
0.20
*
*
0.15 maximum for 35mm and 40mm diameter.
*
†
>
>
For rated voltages ≤63V, values are not valid for case sizes 35mm in diameter or 50mm in length.
ꢃ
ꢃ
ꢀ
Low Temperature
Characteristics
At 120Hz, impedance (Z) ratio between the 25ꢁC or 40ꢁC value and 20ꢁC value shall not
exceed the values given below.
Rated Voltage (V)
6.3-16
25
3
35
3
50, 63
80,100
160-400
450
8
ꢃ
ꢀ
Z( 25ꢁC) /Z( 20ꢁC)
4
2
6
2
5
4
ꢃ
ꢀ
Z( 40ꢁC) /Z( 20ꢁC)
15
10
8
—
—
Rated Ripple Current Multipliers
Ambient Temperature (ꢁC)
ꢀ
45ꢁC
ꢀ
60ꢁC
ꢀ
70ꢁC
ꢀ
85ꢁC
1.73
1.50
1.32
1.00
Frequency (Hz)
DC Rated Voltage
6.3-50V
50Hz
120Hz
300Hz
1.03
1.07
1.17
1.16
1kHz
10kHz
100kHz
1.08
0.95
0.92
0.81
0.77
1.00
1.00
1.00
1.00
1.05
1.13
1.32
1.30
1.08
1.19
1.45
1.41
63-100V
1.20
160-250V
315-450V
1.50
1.43
ꢀ
The following specifications shall be satisfied when the capacitors are restored to 20ꢁC after
subjecting them to DC voltage for 2,000 hours at 85ꢁC with the rated ripple current applied.
Endurance
(Load Life)
ꢀ
The sum of the DC voltage and peak AC voltage must not exceed the full rated voltage of
the capacitors.
ꢄ
Capacitance change: ≤ 20% of initial measured value
Tan ꢁ (DF)
Leakage current
: ≤ 200% of initial specified value
: ≤ initial specified value
ꢀ
The following specifications shall be satisfied when the capacitors are restored to 20ꢁC after
exposing them for1,000 hours at 85ꢁC without voltage applied. The rated voltage shall be
Shelf Life
ꢀ
applied to the capacitors for a minimum of 30 minutes, at least 24 hours and not more than
48 hours before the measurements.
ꢄ
Capacitance change: ≤ 20% of initial measured value
Tan ꢁ (DF)
Leakage current
: ≤ 150% of initial specified value
: ≤ initial specified value
2/15 United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
CHEMI-CON [ UNITED CHEMI-CON, INC. ]
