Micro Guide

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www.vishay.com
Vishay Sprague
Guide for Leadframeless Molded Tantalum Capacitors
INTRODUCTION
Tantalum electrolytic capacitors are the preferred choice in
applications where volumetric efficiency, stable electrical
parameters, high reliability, and long service life are primary
considerations. The stability and resistance to elevated
temperatures of the tantalum / tantalum oxide / manganese
dioxide system make solid tantalum capacitors an
appropriate choice for today’s surface mount assembly
technology.
Vishay Sprague has been a pioneer and leader in this field,
producing a large variety of tantalum capacitor types for
consumer, industrial, automotive, military, and aerospace
electronic applications.
Tantalum is not found in its pure state. Rather, it is
commonly found in a number of oxide minerals, often in
combination with Columbium ore. This combination is
known as “tantalite” when its contents are more than
one-half tantalum. Important sources of tantalite include
Australia, Brazil, Canada, China, and several African
countries. Synthetic tantalite concentrates produced from
tin slags in Thailand, Malaysia, and Brazil are also a
significant raw material for tantalum production.
Electronic applications, and particularly capacitors,
consume the largest share of world tantalum production.
Other important applications for tantalum include cutting
tools (tantalum carbide), high temperature super alloys,
chemical processing equipment, medical implants, and
military ordnance.
Vishay Sprague is a major user of tantalum materials in the
form of powder and wire for capacitor elements and rod and
sheet for high temperature vacuum processing.
Rating for rating, tantalum capacitors tend to have as much
as three times better capacitance / volume efficiency than
aluminum electrolytic capacitors. An approximation of the
capacitance / volume efficiency of other types of capacitors
may be inferred from the following table, which shows the
dielectric constant ranges of the various materials used in
each type. Note that tantalum pentoxide has a dielectric
constant of 26, some three times greater than that of
aluminum oxide. This, in addition to the fact that extremely
thin films can be deposited during the electrolytic process
mentioned earlier, makes the tantalum capacitor extremely
efficient with respect to the number of microfarads available
per unit volume. The capacitance of any capacitor is
determined by the surface area of the two conducting
plates, the distance between the plates, and the dielectric
constant of the insulating material between the plates.
COMPARISON OF CAPACITOR DIELECTRIC
CONSTANTS
DIELECTRIC
Air or Vacuum
Paper
1.0
2.0 to 6.0
Plastic
2.1 to 6.0
Mineral Oil
2.2 to 2.3
Silicone Oil
2.7 to 2.8
Quartz
3.8 to 4.4
Glass
4.8 to 8.0
Porcelain
5.1 to 5.9
Mica
5.4 to 8.7
THE BASICS OF TANTALUM CAPACITORS
Aluminum Oxide
Most metals form crystalline oxides which are
non-protecting, such as rust on iron or black oxide on
copper. A few metals form dense, stable, tightly adhering,
electrically insulating oxides. These are the so-called “valve”
metals and include titanium, zirconium, niobium, tantalum,
hafnium, and aluminum. Only a few of these permit the
accurate control of oxide thickness by electrochemical
means. Of these, the most valuable for the electronics
industry are aluminum and tantalum.
Capacitors are basic to all kinds of electrical equipment,
from radios and television sets to missile controls and
automobile ignitions. Their function is to store an electrical
charge for later use.
Capacitors consist of two conducting surfaces, usually
metal plates, whose function is to conduct electricity. They
are separated by an insulating material or dielectric. The
dielectric used in all tantalum electrolytic capacitors is
tantalum pentoxide.
Tantalum pentoxide compound possesses high-dielectric
strength and a high-dielectric constant. As capacitors are
being manufactured, a film of tantalum pentoxide is applied
to their electrodes by means of an electrolytic process. The
film is applied in various thicknesses and at various voltages
and although transparent to begin with, it takes on different
colors as light refracts through it. This coloring occurs on the
tantalum electrodes of all types of tantalum capacitors.
Tantalum Pentoxide
Revision: 09-Mar-16
e
DIELECTRIC CONSTANT
Ceramic
8.4
26
12 to 400K
In the tantalum electrolytic capacitor, the distance between
the plates is very small since it is only the thickness of the
tantalum pentoxide film. As the dielectric constant of the
tantalum pentoxide is high, the capacitance of a tantalum
capacitor is high if the area of the plates is large:
eA
C = ------t
where
C = capacitance
e = dielectric constant
A = surface area of the dielectric
t = thickness of the dielectric
Tantalum capacitors contain either liquid or solid
electrolytes. In solid electrolyte capacitors, a dry material
(manganese dioxide) forms the cathode plate. A tantalum
lead is embedded in or welded to the pellet, which is in turn
connected to a termination or lead wire. The drawings show
the construction details of the surface mount types of
tantalum capacitors shown in this catalog.
Document Number: 40115
1
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
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Vishay Sprague
SOLID ELECTROLYTE TANTALUM CAPACITORS
Solid electrolyte capacitors contain manganese dioxide,
which is formed on the tantalum pentoxide dielectric layer
by impregnating the pellet with a solution of manganous
nitrate. The pellet is then heated in an oven, and the
manganous nitrate is converted to manganese dioxide.
The pellet is next coated with graphite, followed by a layer
of metallic silver, which provides a conductive surface
between the pellet and the leadframe.
Molded chip tantalum capacitor encases the element in
plastic resins, such as epoxy materials. After assembly, the
capacitors are tested and inspected to assure long life and
reliability. It offers excellent reliability and high stability for
consumer and commercial electronics with the added
feature of low cost.
Surface mount designs of “Solid Tantalum” capacitors use
lead frames or lead frameless designs as shown in the
accompanying drawings.
Side Cathode
Termination (-)
Voltage Code
Excluding 0402 (1005 metric)
case size
TANTALUM CAPACITORS FOR ALL DESIGN
CONSIDERATIONS
Solid electrolyte designs are the least expensive for a given
rating and are used in many applications where their very
small size for a given unit of capacitance is of importance.
They will typically withstand up to about 10 % of the rated
DC working voltage in a reverse direction. Also important
are their good low temperature performance characteristics
and freedom from corrosive electrolytes.
Vishay Sprague patented the original solid electrolyte
capacitors and was the first to market them in 1956. Vishay
Sprague has the broadest line of tantalum capacitors and
has continued its position of leadership in this field. Data
sheets covering the various types and styles of Vishay
Sprague capacitors for consumer and entertainment
electronics, industry, and military applications are available
where detailed performance characteristics must be
specified.
Epoxy Resin
Encapsulation
Polarity Bar Marking
Sintered
Tantalum Pellet
Side Anode
Termination (+)
MnO2/Carbon/
Silver Coating
Bottom Cathode
Termination (-)
Silver Adhesive Epoxy
Glass Reinforced
Epoxy Resin
Bottom Anode
Termination (+)
Fig. 1 - Leadframeless Molded Capacitors, All Types
Revision: 09-Mar-16
Document Number: 40115
2
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
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Vishay Sprague
SOLID TANTALUM CAPACITORS - LEADFRAMELESS MOLDED
SERIES
TL8
298D
298W
TR8
PRODUCT IMAGE
TYPE
Solid tantalum leadframeless molded chip capacitors
Small size including 0603 and 0402 foot print
FEATURES
Ultra low profile
Industrial grade
Industrial grade,
extended range
Low ESR
TEMPERATURE RANGE
Operating Temperature:
-55 °C to +125 °C
(above 40 °C, voltage
derating is required)
Operating Temperature:
-55 °C to +125 °C
(above 85 °C, voltage
derating is required)
Operating Temperature:
-55 °C to +125 °C
(above 40 °C, voltage
derating is required)
Operating Temperature:
-55 °C to +125 °C
(above 85 °C, voltage
derating is required)
CAPACITANCE RANGE
0.68 μF to 220 μF
0.68 μF to 330 μF
2.2 μF to 220 μF
1 μF to 330 μF
4 V to 25 V
2.5 V to 50 V
4 V to 16 V
2.5 V to 25 V
VOLTAGE RANGE
CAPACITANCE TOLERANCE
DISSIPATION FACTOR
± 20 %, ± 10 %
6 % to 80 %
6 % to 80 %
30 % to 80 %
6 % to 80 %
CASE CODES
W9, A0, B0
K, M, R, P, Q, A, S, B
K, M, Q
M, R, P, Q, A, B
TERMINATION
100 % tin
100 % tin or gold plated
SOLID TANTALUM CAPACITORS - LEADFRAMELESS MOLDED
SERIES
TP8
TM8
DLA 11020
T42
PRODUCT IMAGE
TYPE
Solid tantalum leadframeless molded chip capacitors
Built in fuse,
double-stacked
Small size including 0603 and 0402 foot print
FEATURES
High performance,
automotive grade
VOLTAGE RANGE
CASE CODES
TERMINATION
Revision: 09-Mar-16
High reliability,
ultra-low ESR
1 μF to 100 μF
0.68 μF to 47 μF
1 μF to 47 μF
10 μF to 470 μF
6.3 V to 40 V
2 V to 40 V
6.3 V to 40 V
16 V to 75 V
CAPACITANCE TOLERANCE
DISSIPATION FACTOR
High reliability,
DLA approved
Operating Temperature:
-55 °C to +125 °C (above 85 °C, voltage derating is required)
TEMPERATURE RANGE
CAPACITANCE RANGE
High reliability
± 20 %, ± 10 %
6 % to 30 %
6 % to 20 %
6 % to 8 %
M, W, R, P, A, N, T, B
K, M, W, R, P, A, N, T
M, W, R, P, A, N, T
6 % to 15 %
M2
100 % tin
Tin / lead solder plated
or 100 % tin
Tin / lead solder plated
or gold plated
Tin / lead solder plated
or 100 % tin
Document Number: 40115
3
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
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Vishay Sprague
PLASTIC TAPE AND REEL PACKAGING in inches [millimeters]
0.157 ± 0.004
[4.0 ± 0.10]
Tape thickness
Deformation
between
embossments
0.014
[0.35]
max.
0.059 + 0.004 - 0.0
[1.5 + 0.10 - 0.0]
Top
cover
tape
B1 (max.)
(6)
10 pitches cumulative
tolerance on tape
± 0.008 [0.200]
Embossment
0.079 ± 0.002
0.069 ± 0.004
[2.0 ± 0.05]
[1.75 ± 0.10]
A0
K0
0.030 [0.75]
min. (3)
B0
W
0.030 [0.75]
min. (4)
Top cover
tape
For tape feeder 0.004 [0.10]
max.
reference only
including draft.
Concentric around B0 (5)
F
20°
Maximum
component
rotation
(Side or front sectional view)
Center lines
of cavity
P1
D1 (min.) for components
(5)
.
0.079 x 0.047 [2.0 x 1.2] and larger
USER DIRECTION
OF FEED
Maximum
cavity size (1)
Cathode (-)
Anode (+)
DIRECTION OF FEED
20° maximum
component rotation
Typical
component
cavity
center line
B0
A0
(Top view)
Typical
component
center line
3.937 [100.0]
0.039 [1.0]
max.
Tape
0.039 [1.0]
max.
0.9843 [250.0]
Camber
(Top view)
Allowable camber to be 0.039/3.937 [1/100]
Non-cumulative over 9.843 [250.0]
Tape and Reel Specifications: all case sizes are
available on plastic embossed tape per EIA-481.
Standard reel diameter is 7" [178 mm].
Notes
• Metric dimensions will govern. Dimensions in inches are rounded and for reference only.
(1) A , B , K , are determined by the maximum dimensions to the ends of the terminals extending from the component body and / or the body
0
0
0
dimensions of the component. The clearance between the ends of the terminals or body of the component to the sides and depth of the
cavity (A0, B0, K0) must be within 0.002" (0.05 mm) minimum and 0.020" (0.50 mm) maximum. The clearance allowed must also prevent
rotation of the component within the cavity of not more than 20°.
(2) Tape with components shall pass around radius “R” without damage. The minimum trailer length may require additional length to provide
“R” minimum for 12 mm embossed tape for reels with hub diameters approaching N minimum.
(3) This dimension is the flat area from the edge of the sprocket hole to either outward deformation of the carrier tape between the embossed
cavities or to the edge of the cavity whichever is less.
(4) This dimension is the flat area from the edge of the carrier tape opposite the sprocket holes to either the outward deformation of the carrier
tape between the embossed cavity or to the edge of the cavity whichever is less.
(5) The embossed hole location shall be measured from the sprocket hole controlling the location of the embossement. Dimensions of
embossement location shall be applied independent of each other.
(6) B dimension is a reference dimension tape feeder clearance only.
1
CARRIER TAPE DIMENSIONS in inches [millimeters] FOR 298D, 298W, TR8, TP8, TL8
CASE CODE
M (2)
W
R
P
A
A0, Q
B
W9, S
B0
TAPE SIZE
8 mm
8 mm
8 mm
8 mm
8 mm
8 mm
8 mm
8 mm
12 mm
B1 (MAX.) (1)
0.075 [1.91]
0.112 [2.85]
0.098 [2.46]
0.108 [2.75]
0.153 [3.90]
0.157 [4.0]
0.126 [3.20]
0.181 [4.61]
D1 (MIN.)
0.02 [0.5]
0.039 [1.0]
0.039 [1.0]
0.02 [0.5]
0.039 [1.0]
0.02 [0.5]
0.039 [1.0]
0.029 [0.75]
0.059 [1.5]
F
0.138 [3.5]
0.138 [3.5]
0.138 [3.5]
0.138 [3.5]
0.138 [3.5]
0.138 [3.5]
0.138 [3.5]
0.138 [3.5]
0.217 [5.5]
K0 (MAX.)
0.043 [1.10]
0.053 [1.35]
0.066 [1.71]
0.054 [1.37]
0.078 [2.00]
0.049 [1.25]
0.087[2.22]
0.045 [1.15]
0.049 [1.25]
P1
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
0.157 [4.0]
W
0.315 [8.0]
0.315 [8.0]
0.315 [8.0]
0.315 [8.0]
0.315 [8.0]
0.315 [8.0]
0.315 [8.0]
0.315 [8.0]
0.472 [12.0]
Notes
For reference only
Packaging of M case in plastic tape is available per request
(1)
(2)
Revision: 09-Mar-16
Document Number: 40115
4
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
www.vishay.com
Vishay Sprague
CARRIER TAPE DIMENSIONS in inches [millimeters] FOR TM8
CASE CODE
TAPE SIZE
B1 (MAX.) (1)
D1 (MIN.)
F
K0 (MAX.)
P1
W
M
8 mm
0.075 [1.91]
0.02 [0.5]
0.138 [3.5]
0.043 [1.10]
0.157 [4.0]
0.315 [8.0]
W
8 mm
0.112 [2.85]
0.039 [1.0]
0.138 [3.5]
0.053 [1.35]
0.157 [4.0]
0.315 [8.0]
R
8 mm
0.098 [2.46]
0.039 [1.0]
0.138 [3.5]
0.066 [1.71]
0.157 [4.0]
0.315 [8.0]
P
8 mm
0.108 [2.75]
0.02 [0.5]
0.138 [3.5]
0.054 [1.37]
0.157 [4.0]
0.315 [8.0]
A
8 mm
0.153 [3.90]
0.039 [1.0]
0.138 [3.5]
0.078 [2.00]
0.157 [4.0]
0.315 [8.0]
N
12 mm
0.154 [3.90]
0.059 [1.5]
0.216 [5.5]
0.051 [1.30]
0.157 [4.0]
0.472 [12.0]
T
12 mm
0.154 [3.90]
0.059 [1.5]
0.216 [5.5]
0.067 [1.70]
0.157 [4.0]
0.472 [12.0]
Notes
(1) For reference only
CARRIER TAPE DIMENSIONS in inches [millimeters] FOR T42
CASE CODE
TAPE SIZE
B1 (MAX.) (1)
D1 (MIN.)
F
K0 (MAX.)
P1
W
M2
16 mm
0.404 [10.3]
0.059 [1.5]
0.295 [7.5]
0.176 [4.5]
0.472 [12.0]
0.630 [16.0]
Note
(1) For reference only
PAPER TAPE AND REEL PACKAGING in inches [millimeters] FOR 298D, 298W, TR8, TP8, TL8
T
P2
Ø D0
P0
[10 pitches cumulative tolerance on tape ± 0.2 mm]
E1
A0
Bottom cover
tape
F
W
B0
E2
Top
cover tape
P1
Cavity center lines
Anode
Cavity size (1)
G
Bottom cover tape
USER FEED DIRECTION
CASE TAPE
SIZE SIZE
A0
B0
D0
P0
P1
P2
E
F
W
T
K
8 mm
0.033 ± 0.002 0.053 ± 0.002 0.06 ± 0.004 0.157 ± 0.004 0.078 ± 0.004 0.079 ± 0.002 0.069 ± 0.004 0.0138 ± 0.002 0.315 ± 0.008 0.03 ± 0.002
[0.85 ± 0.05] [1.35 ± 0.05] [1.5 ± 0.1]
[4.0 ± 0.1]
[2.0 ± 0.1]
[2.0 ± 0.05]
[1.75 ± 0.1]
[3.5 ± 0.05]
[8.0 ± 0.2]
[0.75 ± 0.05]
M
8 mm
0.041 ± 0.002 0.071 ± 0.002 0.06 ± 0.004 0.157 ± 0.004 0.157 ± 0.004 0.079 ± 0.002 0.069 ± 0.004 0.0138 ± 0.002 0.315 ± 0.008 0.037 ± 0.002
[1.05 ± 0.05] [1.8 ± 0.05] [1.5 ± 0.1]
[4.0 ± 0.1]
[4.0 ± 0.1]
[2.0 ± 0.05]
[1.75 ± 0.1]
[3.5 ± 0.05]
[8.0 ± 0.2]
[0.95 ± 0.05]
Note
(1) A , B are determined by the maximum dimensions to the ends of the terminals extending from the component body and / or the body
0
0
dimensions of the component. The clearance between the ends of the terminals or body of the component to the sides and depth of the
cavity (A0, B0) must be within 0.002" (0.05 mm) minimum and 0.020" (0.50 mm) maximum. The clearance allowed must also prevent rotation
of the component within the cavity of not more than 20°.
Revision: 09-Mar-16
Document Number: 40115
5
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
www.vishay.com
Vishay Sprague
RECOMMENDED REFLOW PROFILES
TP
tp
Max. Ramp Up Rate = 3 °C/s
Max. Ramp Down Rate = 6 °C/s
TL
Temperature
TSmax.
tL
Preheat Area
TSmin.
tS
25
Time 25 °C to Peak
Time
PROFILE FEATURE
SnPb EUTECTIC ASSEMBLY
LEAD (Pb)-FREE ASSEMBLY
Temperature min. (TSmin.)
100 °C
150 °C
Temperature max. (TSmax.)
150 °C
200 °C
60 s to 90 s
60 s to 150 s
PREHEAT AND SOAK
Time (tS) from (TSmin. to TSmax.)
RAMP UP
Ramp-up rate (TL to Tp)
3 °C/s maximum
Liquidous temperature (TL)
183 °C
217 °C
Time (tL) maintained above TL
60 s to 150 s
Peak package body temperature (Tp) max.
Time (tp) within 5 °C of the peak max. temperature
235 °C
260 °C
20 s
30 s
RAMP DOWN
Ramp-down rate (Tp to TL)
6 °C/s maximum
Time from 25 °C to peak temperature
6 min maximum
8 min maximum
Note
• Capacitors should withstand reflow profile as per J-STD-020 standard
PAD DIMENSIONS in inches [millimeters]
B
D
C
A
CASE CODE
A (MIN.)
B (NOM.)
C (NOM.)
D (NOM.)
K
0.028 [0.70]
0.018 [0.45]
0.024 [0.60]
0.059 [1.50]
M
0.039 [1.00]
0.028 [0.70]
0.024 [0.60]
0.080 [2.00]
R, W, W9, S
0.059 [1.50]
0.031 [0.80]
0.039 [1.00]
0.102 [2.60]
P
0.063 [1.60]
0.031 [0.80]
0.047 [1.20]
0.110 [2.80]
A, Q, A0
0.071 [1.80]
0.067 [1.70]
0.053 [1.35]
0.187 [4.75]
B, B0, N, T
0.118 [3.00]
0.071 [1.80]
0.065 [1.65]
0.207 [5.25]
M2
0.315 [8.00]
0.098 [2.50]
0.197 [5.00]
0.394 [10.0]
Revision: 09-Mar-16
Document Number: 40115
6
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
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Vishay Sprague
TYPICAL LEAKAGE CURRENT FACTOR RANGE
LEAKAGE CURRENT FACTOR
100
+ 125 °C
+ 85 °C
10
+ 55 °C
+ 25 °C
1.0
0 °C
0.1
- 55 °C
0.01
0.001
0
10
20
30
40
50
60
70
80
90
100
PERCENT OF RATED VOLTAGE
Notes
• At +25 °C, the leakage current shall not exceed the value listed in the Standard Ratings table
• At +85 °C, the leakage current shall not exceed 10 times the value listed in the Standard Ratings table
• At +125 °C, the leakage current shall not exceed 12 times the value listed in the Standard Ratings table
TYPICAL CURVES AT +25 °C, IMPEDANCE AND ESR VS. FREQUENCY
“M” Case
“M” Case
100
100
IMPEDANCE
ESR
IMPEDANCE
ESR
ESR/Z, Ω
ESR/Z, Ω
10
10
47 μF - 4 V
1
22 μF - 4 V
1
0.1
1
10
FREQUENCY, kHz
100
0.1
0.1
1000
1
100
1000
FREQUENCY, kHz
“M” Case
1000
10
“M” Case
1000
IMPEDANCE
ESR
IMPEDANCE
ESR
100
ESR/Z, Ω
ESR/Z, Ω
100
10
4.7 μF - 10 V
10
1
10 μF - 6 V
1
0.1
Revision: 09-Mar-16
1
10
FREQUENCY, kHz
100
1000
0.1
0.1
1
10
100
1000
FREQUENCY, kHz
Document Number: 40115
7
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
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Vishay Sprague
TYPICAL CURVES AT +25 °C, IMPEDANCE AND ESR VS. FREQUENCY
“M” Case
“M” Case
10 000
1000
IMPEDANCE
ESR
IMPEDANCE
ESR
1000
ESR/Z, Ω
ESR/Z, Ω
100
100
10
1 μF - 16 V
10
10 μF - 10 V
1
0.1
1
1
10
100
1000
0.1
1
10
100
1000
FREQUENCY, kHz
FREQUENCY, kHz
“P” CASE
“P” CASE
100.0
1000.0
IMPEDANCE
IMPEDANCE
ESR
ESR
100.0
ESR/Z, Ω
ESR/Z, Ω
10.0
10.0
1.0
1.0
4.7 μF - 25 V
33 μF - 10 V
0.1
0.1
0.1
0.1
1
10
100
1000
1
FREQUENCY, kHz
10
100
1000
FREQUENCY, kHz
“P” CASE
“P” CASE
10.0
100.0
IMPEDANCE
ESR
IMPEDANCE
ESR
ESR/Z, Ω
ESR/Z, Ω
10.0
1.0
1.0
47 μF - 10 V
0.1
0.1
1
10
FREQUENCY, kHz
Revision: 09-Mar-16
100
1000
220 μF - 4 V
0.1
0.1
1
10
100
1000
FREQUENCY, kHz
Document Number: 40115
8
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Micro Guide
www.vishay.com
Vishay Sprague
GUIDE TO APPLICATION
1.
AC Ripple Current: the maximum allowable ripple
current shall be determined from the formula:
I R MS =
2.
P
-----------R ESR
where,
P=
power dissipation in watts at +25 °C (see
paragraph number 5 and the table Power
Dissipation as given in the tables in the
product datasheets)
RESR = the capacitor equivalent series resistance at
the specified frequency
AC Ripple Voltage: the maximum allowable ripple
voltage shall be determined from the formula:
P
V R MS = Z -----------R ESR
or, from the formula:
V RMS = I R MS x Z
2.1
2.2
3.
4.
where,
P=
power dissipation in watts at +25 °C (see
paragraph number 5 and the table Power
Dissipation as given in the tables in the
product datasheets)
RESR = the capacitor equivalent series resistance at
the specified frequency
Z=
the capacitor impedance at the specified
frequency
The sum of the peak AC voltage plus the applied DC
voltage shall not exceed the DC voltage rating of the
capacitor.
The sum of the negative peak AC voltage plus the
applied DC voltage shall not allow a voltage reversal
exceeding 10 % of the DC working voltage at
+25 °C.
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 +25 °C, 5 % of the DC rating at +85 °C,
and 1 % of the DC rating at +125 °C.
Temperature Derating: if these capacitors are to be
operated at temperatures above +25 °C, the
permissible RMS ripple current shall be calculated
using the derating factors as shown:
TEMPERATURE
+25 °C
+85 °C
+125 °C
5.
DERATING FACTOR
1.0
0.9
0.4
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.)
Revision: 09-Mar-16
6.
Printed Circuit Board Materials: molded capacitors
are compatible with commonly used printed circuit
board materials (alumina substrates, FR4, FR5, G10,
PTFE-fluorocarbon and porcelanized steel).
7.
Attachment:
7.1
Solder Paste: the recommended thickness of the
solder paste after application is 0.007" ± 0.001"
[0.178 mm ± 0.025 mm]. 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.
7.2
Soldering: capacitors can be attached by
conventional soldering techniques; vapor phase,
convection reflow, infrared reflow, wave soldering
and hot plate methods. The Soldering Profile charts
show recommended time / temperature conditions
for soldering. Preheating is recommended. The
recommended maximum ramp rate is 2 °C per s.
Attachment with a soldering iron is not
recommended due to the difficulty of controlling
temperature and time at temperature. The soldering
iron must never come in contact with the capacitor.
7.2.1 Backward and Forward Compatibility: capacitors
with SnPb or 100 % tin termination finishes can be
soldered using SnPb or lead (Pb)-free soldering
processes.
8.
Cleaning (Flux Removal) After Soldering: molded
capacitors are 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 will
attack the epoxy encapsulation material.
8.1
When using ultrasonic cleaning, the board may
resonate if the output power is too high. This
vibration can cause cracking or a decrease in the
adherence of the termination. DO NOT EXCEED 9W/l
at 40 kHz for 2 min.
9.
Recommended Mounting Pad Geometries: proper
mounting pad geometries are essential for
successful solder connections. These dimensions
are highly process sensitive and should be designed
to minimize component rework due to unacceptable
solder joints. The dimensional configurations shown
are the recommended pad geometries for both wave
and reflow soldering techniques. These dimensions
are intended to be a starting point for circuit board
designers and may be fine tuned if necessary based
upon the peculiarities of the soldering process and /
or circuit board design.
Document Number: 40115
9
For technical questions, contact: [email protected]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000