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_RxU_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, MnO₂..) 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, MnO₂, 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+(Lω-1/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 semi-conductor, 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+0-3	Ф180	Ф180
B+1-0	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 : IEC286-2)

Radial Tape & Ammo Packing (conform to: IEC286-2)

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

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