Type of Tantalum Capacitor:
A. TCS Tantalum electrolytic capacitors surface mount type 

B. TCD Tantalum electrolytic capacitors resin dipped 

C. TCA Metal case tantalum capacitors 
General Information
1. Direct DC voltage
The rated voltage(UR), indicated on the capacitor, is the maximum DC voltage which can be applied continuously between 55°C and +85°C
2. Reverse voltage
This characteristic is not guaranteed for all types.
Maximum reverse voltage is generally:
0.15 times U_{R} at +20°C
0.05 times U_{R} at +85°C
0.01 times U_{R} a t +125°C
Tests are performed with the following conditions:
125 hours under reverse voltage followed by 125 hours under direct voltage.
3. Leakage current
Leakage current is the residual current which flows through the capacitor after the charging time, under rated voltage. It is measured after a time not exceeding 5 minutes and is given in µA.
It is equivalent to the insulation resistance to the capacitor and it must be as low as possible.
Maximum leakage current is a function of capacitance and rated voltage values and is given, for each type, in the data sheets.
At 20°C, THE LIMIT IS GENERALLY:
If max (µA)=0.01xC_{R}xU_{R}
With C_{R} in µF and U_{R} in V.
4. Dissipation factor
Dissipation factor is generally measured at the same time as the capacitance, with the same conditions. It is a
function of the series resistance of the capacitor and the capacitance at low frequency.
DF=ESR x C x 2πf
At low frequency, the series resistance is the sum of an ohm part (leads, contacts, MnO_{2}..) and the dielectric losses. Dissipation factor is given in % and maximum limits are given for each type in the data sheets.
5. Equivalent series resistance or impedance
Equivalent circuit of a capacitor
R: equivalent series resistance of the capacitor (leads, contacts, MnO_{2}, dielectric losses)
L: inductance mainly due to the leads
C: capacitance
Equivalent Series Resistance for TCA types
For these types which are specially designed to e used in power supplies and converters, a maximum ESR is given at a frequency of 100kHz or 500kHz. Parameters such output ripple voltage and ripple current capability are directly a function of the ESR value.
Impedance (for standard products)
For the others types, a maximum limit is given for the impedance.
The formula for impedance is:
Z=√(R2+(Lω1/Cω)2)
Examples of impedance curves vs frequency are given in the following:
It can be seen that:
At low frequencies, impedance is a function of capacitance
At high frequencies, impedance is a function of inductance
At medium frequencies it is a function of the ESR
Maximum impedance: see data sheets.
6. Maximum ripple current & voltage
The maximum value of the ripple current , or ripple voltage which can be applied to the capacitor is only limited by the thermal effect. Indeed, as the electrolyte is in this case a solid semiconductor, there is no damage and physical change in the structure when a ripple current is flowing through it.
On the other hand, as the series resistance is not zero, there will be a heating which is proportional to the ESR and to the square of ripple current (P=ESR x I_{rms2})
Coefficient to apply to the maximum ripple current vs temperature: See curve below
Typical Graph
(A) Characteristics reference
For the types which can be used up to 125°C, the voltage must be derated between 85°C and +125°C according to the following curve.
(B) Leakage current change vs applied voltage: see curve below
(C) Leakage current change vs temperature: see curve below
As the ESR changes in frequency, maximum ripple currents are given for two frequencies (1kHz and 100kHz). For other frequencies, apply the rule given by the curve below.
(D) Dissipation factor change vs temperature: see curve below
(E) Dissipation factor change vs Frequency: see curve below
(F) ESR change vs frequency: see table below
(G) ESR change vs frequency: see table below
As there is heating due to the ripple current, it is also necessary to derate the maximum ripple current when the room temperature is higher than 20°C.
Tapping & Packing (Surface Mount)
1. TCS type
Dimensions of the carrier tape and standard parts quantity per reel
Case Size 
A±0.1 
B±0.1 
C±0.1 
D±0.1 
E±0.1 
F±0.1 
G±0.1 
H±0.1 
J+0.1 0 
KMAX 
t 
Quantity Per 
A 
1.9 
3.5 
8.0 
3.5 
1.75 
4.0 
2.0 
4.0 
1.5 
2.5 
0.2 
2000 
B 
3.3 
3.9 
8.0 
3.5 
1.75 
4.0 
2.0 
4.0 
1.5 
2.5 
0.2 
2000 
C 
3.7 
6.0 
12.0 
5.5 
1.75 
8.0 
2.0 
4.0 
1.5 
3.0 
0.3 
500 
D 
4.8 
7.7 
12.0 
5.5 
1.75 
8.0 
2.0 
4.0 
1.5 
3.4 
0.3 
500 
Inserting direction (Polarity orientation)
Polarity L: To be inserted with 
Polarity R: To be inserted with 
Reel dimensions
Tape width 
8 
12 
A+03 
Ф180 
Ф180 
B+10 
Ф60 
Ф60 
C±0.2 
Ф13 
Ф13 
D±0.8 
Ф21 
Ф21 
E±0.5 
2.0 
2.0 
W±0.3 
9.0 
13.0 
t±0.4 
1.3 
1.3 
R±0.4 
10.5 
10.5 
2. TCD type
I. The capacity of the plastic bags depends on:
Case Size  Cut Dimension 
Quantity Per Bag 

From A to D 
From E to K 
From L to N 

Case Size Format 1  Cut <7mm 
1000 
1000 
500 
Case Size Format 2  Cut ≥14mm 
1000 
500 
250 
Case Size Format 2   
1000 
500 
250 
II. TAPE & AMMO PACKING (conform to : IEC2862)
Radial Tape & Ammo Packing (conform to: IEC2862)
Format 1 
Format 2 
Item  Code 
Dimension (mm) 

Carrier tape width  W 
18.0±1.5 
Hold down tape width  W1 
6.0±0.5 
Feed hole diameter  W2 
1.0 max 
Feed hole pitch  D 
4.0±0.2 
Hole center to lead  P 
12.7±0.3 
Hole center to component  P1 
Format 1: 5.05±0.7 
Format 2: 3.85±0.7 

Lead wire clench height  P 
6.35±1.0 
Hole position  H 
16.5±0.5 
Base of component height  H1 
9.0±0.5 
Component height  H2 
0.8 min 
Component height  H3 
32.2 max 
Component alignment  P 
0±1.3 
h 
0±2.0 

Lead spacing  S 
'S' wires: 2.5±0.6 0.1 
'B' wires: 2.5±0.6 0.5 

Lead diameter  d 
0.5±0.05 
Length of snipped lead  L 
11.0 max 
Carrier tape thickness  T 
0.5±0.1 
Case Code 
A~E 
F~J 
K~N 

QTY. (PCS/box) 
2500 
2000 
1000 
Tantalum Electrolytic Capacitors Part Number System
1. Series
Code 
Description 

TCS 
Tantalum electrolytic capacitors surface mount type 
TCD 
Tantalum electrolytic capacitors resin dipped 
TCA 
Metal case tantalum capacitors 
2. Rated Capacitance
Code 
101 
102 
103 
104 
105 
106 
0107 
0108 

PF 
100PF 
1000PF 
10000PF 
100000PF 
1000000PF 
 
 
 
NF 
 
1NF 
10NF 
100NF 
1000NF 
 
 
 
µF 
 
0.001µF 
0.01µF 
0.1µF 
1.0µF 
10µF 
100µF 
1000µF 
3. Tolerance
Tolerance  ±10% 
±20% 
Symbols  K 
M 
4. Rated Voltage
Voltage  4V 
6.3V 
10V 
16V 
20V 
25V 
35V 
40V 
50V 
63V 
100V 
125V 
Symbols  004 
006 
010 
016 
020 
025 
035 
040 
050 
063 
100 
125 
5. Dimensions
TCS Size 
Code 

A 
B 
C 
D 

W±0.2 
3.2 
3.5 
6.0 
7.3 
H±0.2 
1.6 
1.9 
2.5 
2.8 
T±0.3 
1.6 
2.8 
3.2 
4.3 
S±0.3 
0.8 
0.8 
1.3 
1.3 
W2±0.1 
1.2 
2.2 
2.2 
2.4 
TCD Size 
Code 

A 
B 
C 
D 
E 
F 

H 
6.0 
7.2 
8.0 
9.4 
11.5 
12.5 
W 
4.0 
4.8 
5.5 
6.0 
7.2 
8.2 
T 
3.8 
4.6 
5.3 
5.8 
7.0 
8.0 
TCA Size

Code 

A 
B 
C 
D 
E 
F 

DxL 
5x14 
6x16 
8x16 
8x22 
10x22 
10x25 
d 0.05 
0.8 
0.8 
0.8 
0.8 
0.8 
0.8 