U32D
LARGE CAN 105C
U32D Series
Large Can
Screw Terminals
High Ripple
6.3 to 400VDC
Voltage Range
Dimensions in
Inches
RoHS Compliant
105C
Maximum
Temperature
The U32D series allows for extremely high ripple currents for applications such as inverter designs
and motor controllers. This series of capacitors offers very large capacitance of up to 2.2F and a
maximum temperature rating of105C which allows a high operating temperature without sacrificing
life. These capacitors are available with a variety of high current English or Metric thread terminals.
Mounting options available are a three-footed clamp or bottom stud. (A special order two-footed
clamp is also available for selected diameters.) All case size dimensions are based on inches. Custom
designs are available upon request.
Summary of Specifications
Screw terminals: high and low post, English and Metric thread.
Capacitance range: 180F to 2.2F.
Voltage range: 6.3 to 400VDC.
Category temperature range: 40Cto105C.
Leakage current: 0.02CV(A) or 5mA, whichever is smaller, after 5 minutes at25C.
Standard capacitance tolerance: 20%
Nominal case size (DL): D = 35mm (1.375) to 89mm (3.500); L = 41mm (1.625) to
220mm (8.625).
Rated lifetime: 2,000 hours at105C with rated ripple current applied.
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com 117U32D Series
U32D Specifications - Screw Terminals
Item Characteristics
Category Temperature Range 40 to105C
Rated Voltage Range 6.3 to 400VDC
Capacitance Range 180F to 2.2F at25C, 120Hz
Capacitance Tolerance 20% (M) at25C, 120Hz
Leakage Current I 0.02CV (A) or 5mA, whichever is smaller, after 5 minutes at25C.
Where I = Max. leakage current (A), C = Nominal capacitance (F) and V= Rated voltage (V)
Rated Ripple Current Multipliers Ambient Temperature (C)
45C 65C 85C 105C
1.41 1.29 1.00 0.57
Frequency (Hz)
DC Rated Voltage Case Diameter 50Hz 120Hz 300Hz 1kHz 10kHz 50kHz
6.3-50V 35-76 0.95 1.00 1.03 1.05 1.09 1.12
35 0.90 1.00 1.06 1.10 1.18 1.22
63-80V
51-76 0.95 1.00 1.03 1.05 1.09 1.12
35 0.82 1.00 1.12 1.22 1.30 1.33
100V 51 0.90 1.00 1.06 1.10 1.18 1.22
63-76 0.95 1.00 1.03 1.05 1.09 1.12
35 0.80 1.00 1.19 1.34 1.46 1.52
160-250V 51-63 0.81 1.00 1.14 1.26 1.36 1.41
76 0.82 1.00 1.12 1.22 1.30 1.33
315-400V 35-89 0.80 1.00 1.19 1.34 1.46 1.52
Endurance The following specifications shall be satisfied when the capacitors are restored to25C after
(Load Life) subjecting them to DC voltage for 2,000 hours at 105C 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 to25C 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: 20% from initial measurement
ESR change : 200% of initial specified limit
Leakage current : initial specified limit
118 United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
U32D
LARGE CAN 105C