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www.vishay.com
135
CWR06
Vishay Sprague
PERFORMANCE CHARACTERISTICS
1.Operating Temperature: Capacitors are designed to
operate over the temperature range - 55°C to + 85°C.
1.1Capacitors may be operated to + 125°C with
voltage derating to two-thirds the + 85°C rating.
+ 85°C Rating+ 125°C Rating
Working
Voltage
(V)
4
6
10
15
20
25
35
50
Surge
Voltage
(V)
5
8
13
20
26
32
46
65
2.DC Working Voltage: The DC working voltage is the
maximum operating voltage for continuous duty at the
rated temperature.
3.Surge Voltage: The surge DC rating is the maximum
voltage to which the capacitors may be subjected
under any conditions, including transients and peak
ripple at the highest line voltage.
3.1Surge Voltage Test: Capacitors shall withstand
the surge voltage applied in series with a 33 ohm
± 5% resistor at the rate of one-half minute on,
one-half minute off, at + 85°C, for 1000 successive
test cycles.
3.2Following the surge voltage test, the dissipation
factor and the leakage current shall meet the initial
requirements; the capacitance shall not have changed
more than ± 10%.
4.Capacitance Tolerance: The capacitance of all
capacitors shall be within the specified tolerance
limits of the normal rating.
4.1Capacitance measurements shall be made by means
of polarized capacitance bridge. The polarizing
voltage shall be of such magnitude that there shall be
no reversal of polarity due to the AC component. The
maximum voltage applied to capacitors during
measurement shall be 2 volts rms at 120 Hz at +25°C.
If the AC voltage applied is less than one-half volt rms,
no DC bias is required. Accuracy of the bridge shall
be within ± 2%.
Working
Voltage
(V)
2.7
4
7
10
13
17
23
33
Surge
Voltage
(V)
3.4
5
9
12
16
20
28
38
- 55°C
- 10%
+ 85°C
+ 10%
+ 125°C
+ 15%
6.Dissipation Factor: The dissipation factor,
determined from the expression 2πfRC, shall not
exceed values listed in the Standard Ratings Table.
6.1Measurements shall be made by the bridge method
at, or referred to, a frequency of 120 Hz and a
temperature of + 25°C.
7.Leakage Current: Measurements shall be made at
rated working voltage with an application of a
steady source of power, such as a regulated power
supply. A 1000 ohm resistor to limit the charging
current shall be connected in series with each
capacitor under test. Rated working voltage shall be
applied to capacitors for 5 minutes before making
leakage curent measurements. Units must be
stabilized at the rated temperature for 30 minutes prior
to application of voltage.
Note that the leakage current varies with temperature
and applied voltage. See graph below for the
appropriate adjustment factor.
TYPICAL LEAKAGE CURRENT FACTOR RANGE
100
+ 125°C
10
1.0
0.1
Leakage Current Factor
0.01
+ 85°C
+ 55°C
+ 25°C
0°C
- 55°C
5.Capacitance Change With Temperature: The
capacitance change with temperature shall not exceed
the following percentage of the capacitance measured
at + 25°C:
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136
For technical questions, contact tantalum@vishay.com
0.001
0 10 20 30 40 50 60 70 80 90 100
Percent of Rated Voltage
Document Number 40009
Revision 16-Nov-04
PERFORMANCE CHARACTERISTICS (Continued)
7.1At + 25°C, when measured at + 25˚C ± 5˚C, the
leakage current for any capaitor shall not exceed
the maximum value listed in the Standard Ratings
Table
7.2At + 85
°C, when measured at + 85˚C ± 5˚C, the
leakage current for any capacitor shall not exceed the
maximum value listed in the Standard Ratings Table.
7.3At + 125°C, when measured at + 125˚C ± 5˚C, the
leakage current for any capacitor shall not exceed the
maximum value listed in the Standard Ratings Table.
8.Life Test: Capacitors shall be capable of withstanding
a 2000 hour life test at the + 85˚C rated DC working
voltage or a 2000 hour life test at the + 125˚C derated
working voltage.
8.1Following the life test, the capacitors shall meet the
following requirements: the capacitance at + 25˚C
shall not have changed by more than ± 10% from the
GUIDE TO APPLICATION
1.A-C Ripple Current: The maximum allowable ripple
current shall be determined from the formula:
P
I
rms
where,
P = Power Dissipation in Watts @ + 25°C as
given in the table in Paragraph Number 5
(Power Dissipation).
R
= The capacitor Equivalent Series Resistance
ESR
at the specified frequency.
2.A-C Ripple Voltage: The maximum allowable ripple
voltage shall be determined from the formula:
R
=
ESR
CWR06
Vishay Sprague
intital value; the dissipation factor shall meet the initial
requirements; the leakage current shall not be more
than the original requirements.
9.Reflow Soldering: It is recommended that these
capacitors be reflow soldered at a temperature of not
greater than + 250˚C for a period of not more than 30
seconds.
10.Marking: The small body area of these capacitors
does not permit elaborate marking schemes.
Required information will be distinctly marked on the
carton or packages in which the units are shipped.
Capacitors may be ordered with color coding at
additional cost. Color coding shall be as mutually
agreed upon by Vishay Sprague
10.1Polarity: The anode terminal of each capacitor is
identified by the weld and dimple projection on the
anode cap (see Dimensional Configurations).
2.1The sum of the peak AC voltage plus the DC voltage
shall not exceed the DC voltage rating of the
capacitor.
2.2The sum of the negative peak AC voltage plus the
applied DC voltage shall not allow a voltage
reversal exceeding 10% of the DC rating at + 25°C.
3.Reverse Voltage: These capacitors are capable of
withstanding peak voltages in the reverse direction
equal to 10% of the DC rating at + 25°C, 5% of the
DC rating at + 85°C and 1% of the DC rating at
+125°C.
4.Temperature Derating: If these capacitors are to be
operated at temperatures above + 25°C, the
permissible rms ripple current or voltage shall be
calculated using the derating factors as shown:
®
and the customer.
V
= Z
rms
P
R
ESR
or, from the formula:
V
= I
where,
rms
rms
x Z
P = Power Dissipation in Watts @ + 25°C
as given in the table in Paragraph Number 5
(Power Dissipation).
R
= The capacitor Equivalent Series Resistance
ESR
at the specified frequency.
Z = The capacitor impedance at the specified
frequency.
Document Number 40009
Revision 16-Nov-04
For technical questions, contact tantalum@vishay.com
Temperature
+ 25°C
+ 55˚C
+ 85°C
+ 125°C
Derating Factor
1.0
0.9
0.8
0.4
5.Power Dissipation: Power dissipation will be
affected by the heat sinking capability of the mounting
surface. Non-sinusoidal ripple current may produce
heating effects which differ from those shown. It
is important that the equivalent
Irms
value be
established when calculating permissible operating
levels. (Power Dissipation calculated using + 25°C
temperature rise.)
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137
CWR06
250
200
150
100
50
TIME (SECONDS)
TEMPERATURE DEG. CENTIGRADE
0 50 100 150 200 250 300 350
Vishay Sprague
GUIDE TO APPLICATION (Continued)
Case Code
A
B
C
D
E
F
G
H
6.Printed Circuit Board Materials: The CWR06 is
compatible with commonly used printed circuit board
materials (alumina substrates, FR4, FR5, G10, PTFEfluorocarbon and porcelainized steel). If you desire
other board materials, contact the factory for
availability.
7.Attachment:
7.1Solder Paste: The recommended thickness of the
solder paste after application is .007" ± .001"
[.178mm ± .025mm]. Care should be exercised in
selecting the solder paste. The metal purity should
be as high as practical. The flux (in the paste) must
be active enough to remove the oxides formed on the
metallization prior to the exposure to soldering heat. In
practice this can be aided by extending the solder
preheat time at temperatures below the liquidous state
of the solder.
7.2Soldering: Capacitors can be attached by
conventional soldering techniques - vapor phase,
infrared reflow, wave soldering and hot plate methods.
The Soldering Profile chart shows maximum
recomended time/temperature conditions for soldering. Attachment with a soldering iron is not recommended due to the difficulty of controlling temperature
and time at temperature.
8.Cleaning (Flux Removal) After Soldering: The
CWR06 is compatible with all commonly used solvents
such as TES, TMS, Prelete, Chlorethane, Terpene
and aqueous cleaning media. However, CFC/ODS
products are not used in the production of these
devices and are not recommended. Solvents
containing methylene chloride or other epoxy solvents
should be avoided since these attack the epoxy
encapsulation material.
9Recommended Mounting Pad Geometries: The
area under the tantalum wire nib should not be
metallized on the PC board. The width dimension
indicated is the same as the maximum width of the
capacitor. This is to minimize lateral movement.
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138
Maximum Permissible
Power Dissipation
°C (Watts) in free air
@ + 25
0.060
0.075
0.075
0.085
0.095
0.110
0.120
0.150
For technical questions, contact tantalum@vishay.com
REFLOW SOLDER PADS*
in inches [millimetres]
A
B C B
PAD
CASEWIDTHMETALIZATION SEPARATION
CODE(A)(B)(C)
A0.650.0500.040
(1.6)(1.3)(1.0)
B0.0650.0700.055
(1.6)(1.8)(1.4)
C0.0650.0700.120
(1.6)(1.8)(0.3)
D0.1150.0700.070
(2.9)(1.8)(1.8)
E0.1150.0700.120
(2.9)(1.8)(3.0)
F0.1500.0700.140
(3.8)(1.8)(3.6)
G0.1250.0700.170
(3.2)(1.8)(4.3)
H0.1650.0900.170
(4.2)(2.3)(4.3)
RECOMMENDED REFLOW SOLDERING PROFILE
Document Number 40009
Revision 16-Nov-04
TAPE AND REEL PACKAGING
Standard orientation is with the cathode
(-) nearest to the sprocket holes
per EIA-481-1 and IEC 286-3.
Top Cover
Thickness
CWR06
Vishay Sprague
Tape and Reel Specifications: All case codes are available on
plastic embossed tape per EIA-481-1 and EIA-481-2. Tape reeling
per IEC 286-3 is also available. Standard reel diameter is 7"
[178mm]. 13" [330mm] reels are available and recommended as
the most cost effective packaging method. The most efficient
packaging quantities are full reel increments on a given reel
diameter. The quantities shown allow for the sealed empty pockets
required to be in conformance with EIA-481-1 and EIA-481-2. Reel
size and packaging orientation must be specified in the Vishay
Sprague part number.
Tape
Carrier
Embossment
Notes:
1. 12mm and 16mm embossed tape with
components shall pass around radius "R"
without damage. The minimum trailer length
may require additional length to provide R
minimum for reels with hub diameters
approaching N minimum.
Case
Code
A
B
C
D
E
F
G
H
Tape
Width
8mm
12mm
12mm
12mm
12mm
12mm
16mm
16mm
R
Min.
Bending Radius
(Note 1)
R Minimum:
8mm 1/2 Pitch and 8mm = .984" [25mm]
12mm, 12mm Double Pitch and 16mm =1.181" [30mm].
Component
Pitch
Quantity per Full
7" [178 mm] Reel
4mm
4mm
4mm
4mm
4mm
8mm
8mm
8mm
2500
2500
2500
2500
2500
1000
600
600
Units Per Reel
Quantity per Half
7" [178 mm] Reel
1250
1250
1250
1250
1250
500
300
300
Document Number 40009
Revision 16-Nov-04
For technical questions, contact tantalum@vishay.com
www.vishay.com
139
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