The U37F series is a general purpose, screw mount U37 grade series specifically designed to provide
the ripple current capability and long life required for high reliability inverter applications.The U37F
has an endurance rating of 5,000 hours at 85 C with the rated ripple current applied. The useful life
can exceed 150,000 hours at 40 C and 1.5x the ripple current. These capacitors are available in a
variety of high current English or Metric thread terminals. Mounting options include a three-footed
clamp or bottom threaded stud. Custom designs are also available.
L ARGE CAN 85 C
U37F
Summary of Specifications
Screw terminals: high and low post, English and Metric thread.
Capacitance range: 1,500 to 22,000µF.
Voltage range: 350 to 500VDC.
Category temperature range: 40 C to 85 C.
Leakage current: 0.02CV(µA) or 5mA, whichever is smaller, after 5 minutes at 25 C.
Standard capacitance tolerance: 20%
Nominal case size (D L): D = 50mm (2.000”) to 89mm (3.500”); L = 92mm (3.625”)
to 219mm (8.625”).
Rated lifetime: 5,000 hours at 85 C 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
1/ 7
U37F Series
U37F Specifications - Screw Terminals
Item
Category Temperature Range
Rated Voltage Range
Capacitance Range
Capacitance Tolerance
Leakage Current
I
40 to
85 C
Characteristics
Engineering Bulletin Mar 2013
350 to 500VDC
1,500 to 22,000 F at
20% ( M ) at
25 C, 120Hz
25 C, 120Hz
25 C.
0.02CV ( A ) or 5mA, whichever is smaller, after 5 minutes at
Where I = Max. leakage current ( A ), C = Nominal capacitance ( F ) and V = Rated voltage ( V )
Rated Ripple Current Multipliers
Ambient Temperature ( C )
45 C
2.82
65 C
1.73
85 C
1.00
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.
Endurance
(Load Life)
The following specifications shall be satisfied when the capacitors are restored to 25 C after
subjecting them to DC voltage for 5,000 hours at 85 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% from initial measurement
ESR change
:
≤
200% of initial specified limit
Leakage current
:
≤
initial specified limit
Useful Life
With specified standard voltage and ripple current applied, typical life as function of ambient
temperature is listed below.
85 C
65 C
45 C
6,500 hours max.
23,800 hours max.
124,700 hours max.
Capacitance change:
≤
30% from initial measurement
ESR change
:
≤
300% of initial specified limit
Leakage current
:
≤
initial specified limit
Shelf Life
The following specifications shall be satisfied when the capacitors are restored to 25 C after
exposing them for 500 hours at 85 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:
≤
20% from initial measurement
ESR change
:
≤
200% of initial specified limit
Leakage current
:
≤
initial specified limit
L ARGE CAN 85 C
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
HL
CD
CP
1
/ - 28
4
CH
NF- 2B
CA
CS
U37F
M5x0.8 - 6H
M6x1- 6H
2.0 N
·
m ( 18.0 in
·
lb)
2.8 N
·
m ( 25.0 in
·
lb)
4.0 N
·
m ( 35.0 in
·
lb)
6.2 N
·
m ( 55.0 in
·
lb)
Typical Inductance (nH)
at 1MHz
Case Diameter
(mm )
Ø
50.8
Ø
63.5
Ø
76.2
Ø
89.0
Terminal Code
HP
—
—
30
30
HL
—
—
30
30
CD
NA
—
25
25
CP
NA
—
20
20
CH
NA
—
25
25
CA
NA
—
20
20
CS
NA
—
25
25
Custom Designs
Custom CV values per case size and termination type may be available upon request.
Contact appropriate representative with specific requirements.
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.
2/7
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
U37F Series
U37F Useful Life
Useful Life: 6,500 Hours at
85 C
3.0
2.5
Engineering Bulletin Mar 2013
The life expectancy of a capacitor is shown
as a function of ambient temperature and
ripple current load.
Ir/ Ir
(rated) ratio
2.0
6 ,5
1.5
1.0
0.5
0.0
40
45
50
55
60
65
70
75
00
hrs
0
100,
00 h
rs
0
150,
00 h
rs
Ambient temperature (°C)
50,
000
hrs
0
10,
25
,00
0h
rs
00
hrs
80
85
Diagram of Dimensions - Screw Terminals
Large Can / Screw Terminals
Case Dimensions and Standard Box Quantities
Case
Size
Code
CB7
CD0
D92
DA5
DB7
DD0
DE3
E92
EA5
EB7
EE3
EJ1
EM9
F92
FA5
FB7
FE3
FF5
FK0
FM9
L
H
Ø
D
Unit: mm (inches)
2.0 (0.080)
50.8 (2.000)
L
1.0 (0.040)
117 (4.625)
130 (5.125)
92 (3.625)
105 (4.125)
117 (4.625)
130 (5.125)
143 (5.625)
0092
(3.625)
105 (4.125)
117 (4.625)
143 (5.625)
181 (7.125)
219 (8.625)
92 (3.625)
105 (4.125)
117 (4.625)
143 (5.625)
155 (6.125)
190 (7.500)
219 (8.625)
F
0.25 (0.010)
22.2 (0.875)
Standard
Box
Quantity
49
63.5 (2.500)
28.6 (1.125)
20
F
Vent
S
T
16
31.8 (1.250)
09
76.2 (3.000)
J
89.0 (3.500)
31.8 (1.250)
05
Black
Insulating
Sleeve
(see note)
L ARGE CAN 85 C
U37F
Insulating
End Disk
D
Note:
In some cases, the color of the sleeve may change slightly due to the operating
conditions, however, the discoloration will not impair capacitor function.
Terminal Specifications
Terminal
Code
HP
HL
CD
CP
CH
CA
CS
Available Case Diameter
Ø
D
Ø
D
Code
C
C
D–E
D–F
D–F
D–F
D–F
mm (inches)
50.8 (2.000)
50.8 (2.000)
63.5 – 76.2 (2.500 – 3.000)
63.5 – 89.0 (2.500 – 3.500)
63.5 – 89.0 (2.500 – 3.500)
63.5 – 89.0 (2.500 – 3.500)
63.5 – 89.0 (2.500 – 3.500)
Thread
Size
10 - 32 NF- 2B
M5x0.8 - 6H
M5x0.8 - 6H
1
/ - 28 NF- 2B
4
1
/ - 28 NF- 2B
4
M6x1- 6H
M6x1- 6H
Minimum
Thread
Depth
9.5 (0.375)
09.5
(0.375)
08.5
(0.335)
08.7
(0.344)
11.9 (0.468)
08.7
(0.344)
11.9 (0.468)
J
0.5 (0.020)
6.4 (0.250)
6.4 (0.250)
5.0 (0.200)
2.4 (0.093)
6.4 (0.250)
2.4 (0.093)
6.4 (0.250)
H
2.0 (0.080)
L
L
L
L
L
L
L
J
J
J
J
J
J
J
Ø
S
0.25 (0.010)
Ø
T
0.25 (0.010)
08.0
(0.313)
8.0 (0.313)
13.0 (0.512)
17.5 (0.689)
17.5 (0.689)
17.5 (0.689)
17.5 (0.689)
11.1 (0.438)
11.1 (0.438)
18.8 (0.740)
—
—
—
—
Mounting Hardware is optional. Refer to hardware specifications on the following page.
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
3/7
U37F Series
Mounting Hardware - Screw Terminals
Type C: Three-Footed Clamp
360
3
Engineering Bulletin Mar 2013
Unit: mm (inches)
30
45
D
5
15
A
T
J
G
K
5.1 0.5 (2 holes)
(0.201 0.020)
R
S
B
Clamp: Zinc with silver trivalent
chromate post treatment.
Hardware: Screw, washer and hexagon
nut included with each clamp.
Type C: Clamp Dimensions
Mounting
Code
C
C
C
C
Case
Ø
D
50.8 (2.000)
63.5 (2.500)
76.2 (3.000)
89.0 (3.500)
A
1.0 (0.040)
31.8 (1.250)
38.1 (1.500)
44.5 (1.750)
50.8 (2.000)
B
1.0 (0.040)
36.5 (1.437)
42.9 (1.689)
49.2 (1.937)
56.5 (2.224)
G
1.0 (0.040)
13.3 (0.524)
13.3 (0.524)
13.3 (0.524)
16.0 (0.630)
J
0.5 (0.020)
4.5 (0.177)
4.5 (0.177)
4.5 (0.177)
4.5 (0.177)
K
0.5 (0.020)
7.1 (0.280)
7.1 (0.280)
7.1 (0.280)
8.0 (0.313)
R
1.0 (0.040)
19.1 (0.751)
19.1 (0.751)
19.1 (0.751)
21.0 (0.827)
S
1.0 (0.040)
9.5 (0.374)
9.5 (0.374)
9.5 (0.374)
9.0 (0.354)
T
0.5 (0.020)
0.8 (0.032)
0.8 (0.032)
1.0 (0.040)
1.0 (0.040)
Type S: Stud Mounting
L ARGE CAN 85 C
Q
U37F
M
P
K
T
D
N
R
Insulated
Plastic Hex Nut
Mounting Nut - Order Separately
The insulated plastic mounting nut is not included with stud mount capacitor orders.
It must be ordered separately. See available part numbers below.
Type S: Stud Dimensions
Mounting
Code
S
P
1.0 (0.040)
16.0 (0.630)
T
Thread Size
M12
Mounting Nut Dimensions
Part
Number
50-8D
50-8E
Ø
K
2.0 (0.080)
M
1.0 (0.040)
19.0 (0.748)
19.0 (0.748)
N
1.0 (0.040)
18.0 (0.709)
18.0 (0.709)
Ø
Q
1.0 (0.040)
R
1.0 (0.040)
1.40 (0.055)
1.40 (0.055)
30.0 (1.181)
38.0 (1.496)
22.0 (0.866)
30.0 (1.181)
4/7
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
U37F Series
Part Numbering System for U37F Series
18 Fields
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18
Engineering Bulletin Mar 2013
When ordering, always specify complete 18-field global part number.
E 3 7 F 4 0 1 C P N 1 0 3 M E J 1 M
9
8
7
Supplement Code.
Field 18.
C = PET insulation with end disk (
Ø
50.8mm only).
M = Pb-free PVC insulation with end disk.
S = Polyolefin insulation with end disk.
Case Size.
Fields 15, 16 and 17.
The single letter diameter code is inserted in field 15.
C =
Ø
50.8mm (
Ø
2.000”)
D =
Ø
63.5mm (
Ø
2.500”)
E =
Ø
76.2mm (
Ø
3.000”)
F =
Ø
89.0mm (
Ø
3.500”)
The double character length code is inserted in fields 16 and 17.
For lengths
≤
99mm, insert the actual length rounded to nearest
millimeter. For lengths of 100mm or more, insert the appropriate
alpha numeric code as indicated below.
92 = 92mm (3.625”)
A5 = 105mm (4.125”)
B7 = 117mm (4.625”)
D0 = 130mm (5.125”)
E3 = 143mm (5.625”)
F5 = 155mm (6.125”)
J1 = 181mm (7.125”)
K0 = 190mm (7.500”)
M9 = 219mm (8.625”)
Capacitance Tolerance.
Field 14.
M = 20%
Capacitance.
Fields 11, 12 and 13.
Expressed in Microfarads. The first two digits are significant
figures inserted in fields 11 and 12, and the third digit inserted
in field 13 indicates the number of zeros for capacitance of
10 F or more. R indicates the decimal point for capacitance
less than 10 F (e.g. 1R0 = 1.0 F; 100 = 10 F; 101 = 100 F;
102 = 1,000 F; 103 = 10,000 F ).
Mounting Hardware.
Field 10.
N = None.
C = Three-footed clamp.
S = Stud mount.
The mounting nut is not included with
stud mount orders. It must be ordered separately.
Terminal Type.
Fields 8 and 9.
HP = High post 10-32 NF- 2B screw thread.
HL = High post M5x0.8 screw thread.
CD = UTE M5x0.8 screw thread.
CP = Low post
1
/
4
-28 NF-2B screw thread.
CH = High post
1
/
4
-28 NF-2B screw thread.
CA = Low post M6x1 screw thread.
CS = High post M6x1 screw thread.
DC Rated Voltage.
Fields 5, 6 and 7.
Expressed in Volts. The first two digits are significant figures
inserted in fields 5 and 6, and the third digit inserted in field 7
indicates the number of zeros for rated voltage of 10VDC or
more. R indicates the decimal point for rated voltage less than
The proportional part of the incremental PI controller is multiplied by the difference between the current input deviation and the last input deviation; the integral part is multiplied by the current ...
I'm porting the SD card driver recently, and I don't understand a few parameters when reading the manual. For example, the SD card controller register of my board has two bits that can set the SD card...
Circuit Function and AdvantagesThis circuit uses the AD5546/AD5556 current output DAC, the ADR03 precision voltage reference, and the AD8628 operational amplifier to achieve precision, unipolar, in-ph...
The lookup table method can be used to output a sine wave, and the oscilloscope can display a sine wave waveform. However, skipping the ROM and directly assigning values to the DA chip does not output...
[i=s]This post was last edited by the Department of Homeland Security on 2016-9-3 18:36[/i] Some time ago, when I went out to play basketball, I put my iPhone 5s in my pocket, and it got wet with swea...
I wrote a program as follows: #includeunsigned char led[10]={0x3F,/*0*/0x06,/*1*/0x5B,/*2*/0x4F,/*3*/0x66,/*4*/0x6D,/*5*/0x7D,/*6*/0x07,/*7*/0x7F,/*8*/0x6F,/*9*/};
unsigned char led_bit[4];
int i=0;TR...
Recently, the first Digital China Summit was held in Fuzhou, attracting many domestic ICT industry giants to participate in the exhibition. The long queues outside the venue, the noisy and exciting...[Details]
International Solar Photovoltaic Network News: Chinese inverter company Sungrow announced that it will build a 3GW photovoltaic inverter manufacturing plant in Bangalore, the capital of Karnataka, ...[Details]
Recently, the U.S. Department of Commerce announced that it would prohibit companies in the country from selling any electronic technology or communication components to ZTE, a Chinese communicatio...[Details]
In the past few days, the Chinese display panel giant
BOE
has been flooded with articles supported by Liu Shuwei. Let's follow the embedded editor to learn about the relevant content.
...[Details]
Unique device identifiers are suitable for: ● Used as a serial number (e.g. USB string serial number or other terminal applications) ● Use the unique ID as a security key when used in conjunction wit...[Details]
After searching a lot of information, I finally understood the time base timer. I did not use any library functions but operated the registers directly. The following introduces the systick in STM32...[Details]
1. Basic Concepts of LCD/LCM The structure of Liquid Crystal Display (LCD) is to place liquid crystals between two parallel pieces of glass. There are many vertical and horizontal fine wires between...[Details]
Artificial intelligence
There is no inherent bias in AI. It does not "think" something is true or false for reasons that cannot be explained by logic. Unfortunately, human bias exists in mach...[Details]
Since China began to try to produce panels independently in 1998, in 2018, China's panel industry has gradually upgraded from a marginal industry to the largest production scale. Especially in the ...[Details]
I rewrote the main part of this program. The program uses the watchdog as a normal timer and scans the digital tubes in the watchdog interrupt. In addition, I added a display buffer. If you want to d...[Details]
On May 8,
Google
I/O 2018 Developer Conference was held as scheduled in Mountain View, California. In the second year of the full promotion of the "AI first" strategy, artificial intelligen...[Details]
ADC: 1. The ADC module inside STM32 has three ADC1, ADC2, and ADC3, which are independent of each other, so synchronous sampling can be performed. 2ADC input clock must not exceed 14MHz, it is genera...[Details]
T1 or T2 are two timers/counters of MCS-51 microcontroller. The first method can use two timers/counters to generate rectangular waves. In order to save interface resources, the second method is used...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
