DLA 95158
www.vishay.com
Vishay
Solid Tantalum Surface Mount Chip Capacitors
T
ANTAMOUNT®
, Molded Case, DLA Approved, Low ESR
FEATURES
• Meets MIL-PRF-55365 and EIA535BAAC mechanical and
performance requirements
• Low ESR
• Terminations: Gold and tin/lead solder plated
• Molded case available in 3 case codes
• High ripple current carrying capability
• High reliability
Inspection:
MIL-PRF-55365, group A inspection
(exponential distribution); subgroups 1 and 3 with voltage
aging a minimum of 10 h.
100 % Surge Current Tested
- Temperature: 25 °C
- Applied voltage: Rated voltage
- Test cycles: 4
- Charge and discharge cycles: 4 s maximum
- Total DC resistance: 0.6
maximum
PERFORMANCE/ELECTRICAL
CHARACTERISTICS
Operating Temperature:
- 55 °C to + 125 °C
(above 85 °C, voltage derating is required)
Capacitance Range:
4.7 μF to 220 μF
Capacitance Tolerance:
± 10 %, and ± 20 %
Voltage Rating:
6 V
DC
to 50 V
DC
APPLICATIONS
• Military/aerospace
ORDERING INFORMATION
95158-
DRAWING NUMBER
01
DASH NUMBER
K
CAPACITANCE
TOLERANCE
K = ± 10 %
M = ± 20 %
H
TERMINATION FINISH
B = Gold plated
(10 microinch minimum)
H = Solder plated
(100 microinch
minimum)
T
PACKAGING
T = 7" (178 mm) reel
DIMENSIONS
in inches [millimeters]
L
W
H
T
H
MIN.
Glue Pad
Glue Pad
P
T
W
CASE CODE
C
D
E
EIA SIZE
6032-28
7343-31
7343-43
L
0.236 ± 0.012
[6.0 ± 0.30]
0.287 ± 0.012
[7.3 ± 0.30]
0.287 ± 0.012
[7.3 ± 0.30]
W
0.126 ± 0.012
[3.2 ± 0.30]
0.170 ± 0.012
[4.3 ± 0.30]
0.170 ± 0.012
[4.3 ± 0.30]
H
0.098 ± 0.012
[2.5 ± 0.30]
0.110 ± 0.012
[2.8 ± 0.30]
0.158 ± 0.012
[4.0 ± 0.30]
P
0.051 ± 0.012
[1.3 ± 0.30]
0.051 ± 0.012
[1.3 ± 0.30]
0.051 ± 0.012
[1.3 ± 0.30]
T
W
0.087 ± 0.004
[2.2 ± 0.10]
0.095 ± 0.004
[2.4 ± 0.10]
0.095 ± 0.004
[2.4 ± 0.10]
T
H
MIN.
0.039
[1.0]
0.039
[1.0]
0.039
[1.0]
Note
• Glue pad (non-conductive, part of molded case) is dedicated for glue attachment (as user option).
Revision: 28-Jun-13
Document Number: 40120
1
For technical questions, contact:
tantalum@vishay.com
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
Molded Guide
www.vishay.com
Vishay Sprague
Guide for 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
Plastic
Mineral Oil
Silicone Oil
Quartz
Glass
Porcelain
Mica
Aluminum Oxide
Tantalum Pentoxide
Ceramic
e
DIELECTRIC CONSTANT
1.0
2.0 to 6.0
2.1 to 6.0
2.2 to 2.3
2.7 to 2.8
3.8 to 4.4
4.8 to 8.0
5.1 to 5.9
5.4 to 8.7
8.4
26
12 to 400K
THE BASICS OF TANTALUM CAPACITORS
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.
Revision: 27-Jun-12
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: 40074
29
For technical questions, contact:
tantalum@vishay.com
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
Molded Guide
www.vishay.com
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.
Vishay Sprague
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.
MOLDED CHIP CAPACITOR, ALL TYPES EXCEPT 893D/TF3/T86
Silver
Adhesive
Epoxy
Encapsulation
Anode
Polarity Bar
MnO
2
/Carbon/
Silver
Coating
Solderable
Leadframe
Cathode
Sintered
Termination
Tantalum
Solderable
Anode
Termination
MOLDED CHIP CAPACITOR WITH BUILT-IN FUSE, TYPES 893D/TF3/T86
Epoxy Encapsulation
Silver
Adhesive
Solderable
Cathode
Termination
Anode Polarity Bar
MnO
2
/Carbon/Silver
Coating
Sintered
Tantalum
Pellet
Fusible
Wire
Lead Frame
Solderable
Anode Termination
Revision: 27-Jun-12
Document Number: 40074
30
For technical questions, contact:
tantalum@vishay.com
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
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