U37F
LARGE CAN 85C
U37F Series
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com2/7
Engineering Bulletin Mar 2013
Product specifications are subject to change without notice.
Ask for UCC product bulletins and review specifications before purchase and/or use. Please use our products based on parameters specified in our bulletins.
U37F Specifications - Screw Terminals
Item
Category Temperature Range
40 to
85C
Rated Voltage Range 350 to 500VDC
Capacitance Range 1,500 to 22,000F at
25C, 120Hz
Capacitance Tolerance
20% (M) at
25C, 120Hz
Endurance
(Load Life)
The following specifications shall be satisfied when the capacitors are restored to
25C after
subjecting them to DC voltage for 5,000 hours at
85C 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 Life The following specifications shall be satisfied when the capacitors are restored to
25C after
exposing them for 500 hours at
85C 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
25C.
Where I = Max. leakage current (A ), C = Nominal capacitance (F) and V = Rated voltage ( V )
Rated Ripple Current Multipliers Ambient Temperature (C)
45C
2.82
65C
1.73
85C
1.00
Vibration Rating
Maximum Tightening Torque
10 -55Hz, 10g sinusoidal in three axes, 2 hours per axis.
Terminal Code
Thread Size
3 Threads Engaged
6 Threads Engaged
HP
10- 32 NF-2B
2.0 N
·
m (18.0 in
·
lb) 4.0 N
·
m (35.0 in
·
lb)
2.8 N
·
m (25.0 in
·
lb) 6.2 N
·
m (55.0 in
·
lb)
M5x0.8 - 6H
1
/
4
- 28 NF-2B M6x1-6H
HL CD CP CH CA CS
Typical Inductance (nH)
at 1MHz
Case Diameter
(mm)
Terminal Code
HL CD CP CH CA CSHP
Ø50.8
Ø63.5
Ø76.2
Ø89.0
—
—
30
30
—
—
30
30
NA
—
25
25
NA
—
20
20
NA
—
25
25
NA
—
20
20
Custom Designs Custom CV values per case size and termination type may be available upon request.
Contact appropriate representative with specific requirements.
Frequency (Hz )
DC Rated Voltage
350-500V
50Hz
0.80
120Hz
1.00
300Hz
1.20
1kHz
1.30
3kHz
1.40
10kHz
1.41
To determine maximum ripple current at a specified temperature and frequency, use the appropriate
multiplier shown. However, do not use both the temperature and frequency multipliers together.
85C
65C
45C
6,500 hours max.
23,800 hours max.
124,700 hours max.
Useful Life With specified standard voltage and ripple current applied, typical life as function of ambient
temperature is listed below.
Capacitance change: ≤ 30% from initial measurement
ESR change : ≤ 300% of initial specified limit
Leakage current : ≤ initial specified limit
NA
—
25
25
