Polymer Guide

Polymer Guide
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Vishay
Guide for Tantalum Solid Electrolyte Chip Capacitors
with Polymer Cathode
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.
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: 18-May-16
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
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:

where
eA
C = ------t
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: 40076
1
For technical questions, contact: [email protected]
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SOLID ELECTROLYTE POLYMER TANTALUM CAPACITORS
Solid electrolyte polymer capacitors utilize sintered tantalum pellets as anodes. Tantalum pentoxide dielectric layer is formed
on the entire surface of anode, which is further impregnated with highly conductive polymer as cathode system.
The conductive polymer layer is then coated with graphite, followed by a layer of metallic silver, which provides a conductive
surface between the capacitor element and the outer termination (lead frame or other).
Molded chip polymer 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 variety of
applications in electronic devices. Usage of conductive polymer cathode system provides very low equivalent series resistance
(ESR), which makes the capacitors particularly suitable for high frequency applications.
TANTALUM CAPACITOR WITH POLYMER CATHODE TYPE T55
Epoxy encapsulation
Silver adhesive
Anode polarity bar
Solderable cathode termination
Polymer / carbon / silver coating
Solderable anode termination
Sintered tantalum pellet
Lead frame welded to Ta wire
TANTALUM CAPACITOR WITH POLYMER CATHODE TYPE T58
Rating / marking
Encapsulation
Side cathode termination (-)
Anode polarity bar
Silver adhesive epoxy
Bottom cathode termination (-)
Copper pad
Side anode termination (+)
Glass reinforced epoxy resin substrate
Polymer / carbon / silver coating
Conductive strip
Sintered tantalum pellet
Anode wire
Revision: 18-May-16
Bottom anode termination (+)
Document Number: 40076
2
For technical questions, contact: [email protected]
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TANTALUM CAPACITOR WITH POLYMER CATHODE TYPE T52
Encapsulation
Side cathode termination (-)
Anode polarity marking
Silver adhesive epoxy
Bottom cathode termination (-)
Side anode termination (+)
Silver plated copper substrate
Sintered
tantalum pellet
Polymer / carbon / silver coating
Conductive strip
Insulation adhesive epoxy
TANTALUM CAPACITOR WITH POLYMER CATHODE TYPE T54 / T59
Top / bottom cathode termination (-)
Encapsulation
Side cathode termination (-)
Anode polarity marking
Silver adhesive epoxy
Top / bottom anode termination (+)
Non-conductive adhesive epoxy
Conductive strip
Glass reinforced epoxy substrate
Side anode termination (+)
Sintered tantalum pellet
Top / bottom cathode termination (-)
Polymer / carbon / silver coating
Top / bottom anode termination (+)
Revision: 18-May-16
Document Number: 40076
3
For technical questions, contact: [email protected]
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SOLID TANTALUM CAPACITORS - MOLDED CASE
SERIES
T55
PRODUCT IMAGE
VPolyTanTM, molded case, high performance polymer
High performance
-55 °C to +105 °C
3.3 μF to 680 μF
2.5 V to 35 V
± 20 %
0.1 CV
8 % to 10 %
15 m to 500 m
J, P, A, T, B, V, D
Cases J, P: 100 % tin
Case A: 100 % tin or Ni/Pd/Au
Cases T, B, V, D: Ni/Pd/Au
TYPE
FEATURES
TEMPERATURE RANGE
CAPACITANCE RANGE
VOLTAGE RANGE
CAPACITANCE TOLERANCE
LEAKAGE CURRENT
DISSIPATION FACTOR
ESR
CASE SIZES
TERMINATION FINISH
SOLID TANTALUM CAPACITORS - LEADFRAMELESS MOLDED CASE
SERIES
T52
T58
T59
T54
vPolyTanTM solid tantalum
surface mount chip
capacitors, leadframeless
molded polymer type
vPolyTanTM solid tantalum
surface mount chip
capacitors, leadframeless
molded polymer type
vPolyTanTM solid tantalum
surface mount chip
capacitors, leadframeless
molded polymer type
Low profile
-55 °C to +105 °C
(above 85 °C, voltage
derating is required)
Small case size
-55 °C to +105 °C
(above 85 °C, voltage
derating is required)
Multianode
-55 °C to +105 °C
(above 85 °C, voltage
derating is required)
vPolyTanTM solid tantalum
surface mount chip
capacitors, leadframeless
molded polymer type,
commercial off-the-shelf
(COTS)
Hi-rel COTS, multianode
-55 °C to +105 °C
(above 85 °C, voltage
derating is required)
330 μF to 2200 μF
1 μF to 330 μF
10 μF to 470 μF
10 μF to 470 μF
6.3 V to 16 V
4 V to 35 V
16 V to 75 V
16 V to 75 V
± 10 %, ± 20 %
± 20 %
± 10 %, ± 20 %
± 20 %
PRODUCT IMAGE
TYPE
FEATURES
TEMPERATURE
RANGE
CAPACITANCE
RANGE
VOLTAGE RANGE
CAPACITANCE
TOLERANCE
LEAKAGE
CURRENT
DISSIPATION
FACTOR
ESR
CASE SIZES
TERMINATION
Revision: 18-May-16
0.1 CV
10 %
8 % to 14 %
10 %
10 %
25 m to 55 m
90 m to 500 m
MM, M0, W0, W9,
A0, AA, B0, BB
100 % tin
25 m to 100 m
25 m to 100 m
E1, M1
EE
EE
100 % tin / lead
Document Number: 40076
4
For technical questions, contact: [email protected]
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MOLDED CAPACITORS, T55 TYPE
PLASTIC TAPE AND REEL PACKAGING DIMENSIONS in millimeters
E
A
B
C
Label
D
W
TAPE WIDTH
A+0/-3
B+1/0
C ± 0.2
D ± 0.5
E ± 0.5
W ± 0.3
8
12
Ø 180
Ø 60
Ø 13
Ø 21
2.0
9.0
13.0
Note
• A reel diameter of 330 mm is also applicable.
PLASTIC TAPE SIZE DIMENSIONS in millimeters
Pocket
Perforation
E
Ø 1.5 + 0.10
F
B
W
A
P1
t
Direction of tape flow
4.0 ± 0.1
2.0 ± 0.1
Inserting direction
Perforation
Marking side (upper)
Mounting terminal side (lower)
Symbol: R
CASE CODE
J
P
A
T
B
V
D
A ± 0.2
1.0
1.4
1.9
3.1
3.1
4.8
4.8
B ± 0.2
1.8
2.2
3.5
3.8
3.8
7.7
7.7
W ± 0.3
8.0
8.0
8.0
8.0
8.0
12.0
12.0
F ± 0.1
3.5
3.5
3.5
3.5
3.5
5.5
5.5
E ± 0.1
1.75
1.75
1.75
1.75
1.75
1.75
1.75
P1 ± 0.1
4.0
4.0
4.0
4.0
4.0
8.0
8.0
tmax.
1.3
1.6
2.5
1.7
2.5
2.6
3.4
Note
• A reel diameter of 330 mm is also applicable.
Revision: 18-May-16
Document Number: 40076
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
Polymer Guide
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LEADFRAMELESS MOLDED CAPACITORS, ALL TYPES
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
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
W
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 embossment. Dimensions of
embossment location shall be applied independent of each other.
(6) B dimension is a reference dimension tape feeder clearance only.
1
Revision: 18-May-16
Document Number: 40076
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
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CARRIER TAPE DIMENSIONS in inches [millimeters]
CASE CODE
TAPE SIZE
B1 (MAX.) (1)
D1 (MIN.)
F
E1
K0 (MAX.)
P1
W
0.043 [1.10]
0.157 [4.0]
0.315 [8.0]
TBD
MM (2)
8 mm
0.075 [1.91]
0.02 [0.5]
0.138 [3.5]
M0
TBD
M1
12 mm
0.32 [8.2]
0.059 [1.5]
0.217 ± 0.002
[5.5 ± 0.05]
0.094 [2.39]
0.315 ± 0.04
[8.0 ± 1.0]
0.472 + 0.012 / - 0.004
[12.0 + 0.3 / - 0.10]
W9
8 mm
0.126 [3.20]
0.030 [0.75]
0.138 [3.5]
0.045 [1.15]
0.157 [4.0]
0.315 [8.0]
W0
8 mm
0.126 [3.20]
0.030 [0.75]
0.138 [3.5]
0.045 [1.15]
0.157 [4.0]
0.315 [8.0]
A0
8 mm
-
0.02 [0.5]
0.138 [3.5]
0.049 [1.25]
0.157 [4.0]
0.315 [8.0]
AA
8 mm
0.154 [3.90]
0.039 [1.0]
0.138 [3.5]
0.079 [2.00]
0.157 [4.0]
0.315 [8.0]
B0
12 mm
0.181 [4.61]
0.059 [1.5]
0.217 [5.5]
0.049 [1.25]
0.157 [4.0]
0.315 [8.0]
BB
8 mm
0.157 [4.0]
0.039 [1.0]
0.138 [3.5]
0.087 [2.22]
0.157 [4.0]
0.315 [8.0]
EE
12 mm
0.32 [8.2]
0.059 [1.5]
0.217 ± 0.002
[5.5 ± 0.05]
0.175 [4.44]
0.315 ± 0.04
[8.0 ±1.0]
0.472 + 0.012 / - 0.004
[12.0 + 0.3 / - 0.10]
Notes
(1) For reference only.
(2) Standard packaging of MM case is with paper tape. Plastic tape is available per request.
PAPER TAPE AND REEL PACKAGING DIMENSIONS in inches [millimeters]
T
Ø D0
P2
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
MM
8 mm
A0
B0
D0
P0
P1
P2
E
F
W
T
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: 18-May-16
Document Number: 40076
7
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PACKING AND STORAGE
Polymer capacitors meet moisture sensitivity level rating (MSL) of 3 as specified in IPC/JEDEC® J-STD-020 and are dry
packaged in moisture barrier bags (MBB) per J-STD-033. Level 3 specifies a floor life (out of bag) of 168 hours at 30 °C maximum
and 60 % relative humidity (RH). Unused capacitors should be re-sealed in the MBB with fresh desiccant. A moisture strip
(humidity indicator card) is included in the bag to assure dryness. To remove excess moisture, capacitors can be dried at 40 °C
(standard “dry box” conditions).
For detailed recommendations please refer to J-STD-033.
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
PREHEAT AND SOAK
Temperature min. (TSmin.)
Temperature max. (TSmax.)
Time (tS) from (TSmin. to TSmax.)
RAMP UP
Ramp-up rate (TL to Tp)
Liquidus temperature (TL)
Time (tL) maintained above TL
Peak package body temperature (Tp) max.
Time (tp) within 5 °C of the peak max. temperature
RAMP DOWN
Ramp-down rate (Tp to TL)
Time from 25 °C to peak temperature
SnPb EUTECTIC ASSEMBLY
LEAD (Pb)-FREE ASSEMBLY
100 °C
150 °C
60 s to 120 s
150 °C
200 °C
60 s to 120 s
3 °C/s maximum
183 °C
217 °C
60 s to 150 s
Depends on type and case - see table below
20 s
5s
6 °C/s maximum
6 min maximum
8 min maximum
PEAK PACKAGE BODY TEMPERATURE (Tp) MAXIMUM
TYPE
CASE CODE
T55
T52
T58
T59
T54
J, P, A, T, B, V, D
E1, M1
MM, M0, W9, W0, A0, AA, B0, BB
EE
EE
PEAK PACKAGE BODY TEMPERATURE (TP) MAX.
SnPb EUTECTIC ASSEMBLY
n/a
220 °C
LEAD (Pb)-FREE ASSEMBLY
260 °C
260 °C
260 °C
250 °C
250 °C
Notes
• T52, T55, and T58 capacitors are process sensitive.
PSL classification to JEDEC J-STD-075: R4G
• T54 capacitors with 100 % tin termination and T59 capacitors are process sensitive.
PSL classification to JEDEC J-STD-075: R6G
Revision: 18-May-16
Document Number: 40076
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
Polymer Guide
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MOLDED CAPACITORS, T55 TYPE
PAD DIMENSIONS in millimeters
L
X
Capacitor
Pattern
Y
W
G
Z
CAPACITOR SIZE
PAD DIMENSIONS
CASE /
DIMENSIONS
L
W
G (max.)
Z (min.)
X (min.)
Y (Ref.)
J
1.6
0.8
0.7
2.5
1.0
0.9
P
2.0
1.25
0.5
2.6
1.2
1.05
A
3.2
1.6
1.1
3.8
1.5
1.35
T/B
3.5
2.8
1.4
4.1
2.7
1.35
V/D
7.3
4.3
4.1
8.2
2.9
2.05
LEADFRAMELESS MOLDED CAPACITORS, ALL TYPES
PAD DIMENSIONS in inches [millimeters]
B
D
C
A
TYPE
CASE CODE
A (MIN.)
B (NOM.)
C (NOM.)
D (NOM.)
E1
0.209 [5.30]
0.098 [2.5]
0.169 [4.3]
0.366 [9.3]
M1
0.276 [7.00]
0.098 [2.5]
0.169 [4.3]
0.366 [9.3]
MM / M0
0.039 [1.00]
0.028 [0.70]
0.024 [0.60]
0.080 [2.00]
W0 / W9
0.059 [1.50]
0.031 [0.80]
0.039 [1.00]
0.102 [2.60]
AA / A0
0.071 [1.80]
0.067 [1.70]
0.053 [1.35]
0.187 [4.75]
BB / B0
0.118 [3.00]
0.071 [1.80]
0.065 [1.65]
0.207 [5.25]
EE
0.209 [5.30]
0.098 [2.5]
0.169 [4.3]
0.366 [9.3]
T52
T58
T59 / T54
Revision: 18-May-16
Document Number: 40076
9
For technical questions, contact: [email protected]
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GUIDE TO APPLICATION
1.
AC Ripple Current: the maximum allowable ripple
current shall be determined from the formula:
I R MS =
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 +105 °C.
5.
Mounting Precautions:
5.1
Limit Pressure on Capacitor Installation with
Mounter: pressure must not exceed 4.9 N with a tool
end diameter of 1.5 mm when applied to the
capacitors using an absorber, centering tweezers, or
similar (maximum permitted pressurization time: 5 s).
An excessively low absorber setting position would
result in not only the application of undue force to the
capacitors but capacitor and other component
scattering, circuit board wiring breakage, and / or
cracking as well, particularly when the capacitors are
mounted together with other chips having a height of
1 mm or less.
P
-----------R ESR
where,
P=
4.
power dissipation in W at +45 °C as given in
the tables in the product datasheets.
RESR = the capacitor equivalent series resistance at
the specified frequency.
2.
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
where,
P=
power dissipation in W at +45 °C as given in
the tables in the product datasheets.
RESR = The capacitor equivalent series resistance at
the specified frequency.
Z=
2.1
The capacitor impedance at the specified
frequency.
The tantalum capacitors must be used in such a
condition that the sum of the working voltage and
ripple voltage peak values does not exceed the rated
voltage as shown in figure below.
Voltage
Ripple voltage
Rated voltage
Operating
voltage
Working voltage
Time (s)
3.
Temperature Derating: power dissipation is
affected by the heat sinking capability of the
mounting surface. If these capacitors are to
be operated at temperatures above +45 °C, the
permissible ripple current (or voltage) shall be
calculated using the derating coefficient as shown in
the table below:
5.2
Flux Selection
5.2.1 Select a flux that contains a minimum of chlorine and
amine.
5.2.2 After flux use, the chlorine and amine in the flux
remain must be removed.
5.3
Cleaning After Mounting: the following solvents are
usable when cleaning the capacitors after mounting.
Never use a highly active solvent.
• Halogen organic solvent (HCFC225, etc.)
• Alcoholic solvent (IPA, ethanol, etc.)
• Petroleum solvent, alkali saponifying agent, water,
etc.
Circuit board cleaning must be conducted at a
temperature of not higher than 50 °C and for an
immersion time of not longer than 30 minutes. When
an ultrasonic cleaning method is used, cleaning must
be conducted at a frequency of 48 kHz or lower, at
an vibrator output of 0.02 W/cm3, at a temperature of
not higher than 40 °C, and for a time of 5 minutes or
shorter.
Notes
• Care must be exercised in cleaning process so that the
mounted capacitor will not come into contact with any
cleaned object or the like or will not get rubbed by a stiff
brush or similar. If such precautions are not taken
particularly when the ultrasonic cleaning method is
employed, terminal breakage may occur.
• When performing ultrasonic cleaning under conditions
other than stated above, conduct adequate advance
checkout.
MAXIMUM RIPPLE CURRENT TEMPERATURE
DERATING FACTOR
 45 °C
1.0
55 °C
0.8
85 °C
0.6
105 °C
0.4
Revision: 18-May-16
Document Number: 40076
10
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