Solid Tantalum Chip Capacitors - Sunlord...

Solid Tantalum Chip Capacitors

Shenzhen Sunlord Electronics Co., Ltd

Content

Tantalum capacitors applications

Tantalum capacitors capabilities



Features of tantalum capacitor

High specific capacity, good for smaller size

Good capability of self-healing

Can easily get large capacitance in a small size

Brilliant stability in a wide temperature range

Longevity of work and high reliability

• Low rated voltage

• Polarity limited

• High price

Advantage

Disadvantage

Solid chip tantalum capacitor provides excellent characteristics and can operate in a wide temperature range. It has unique features:


Construction

Tantalum Positive Pole

Tantalum Wire

Positive Terminal Molded Case

Negative Terminal

Carbon, Silver Layer

Ta2O5 Coat

MnO2 CoatSilver Coat

Tantalum capacitor electrical parameter

1000mV120HzHP4263Btgδ (Dissipation factor)

/100kHzHP4263BESR

VRDCTH2686I0 (leakage current)

1000mV120HzHP4263BCR (Capacitance)

Test signalTest frequencyTest EquipmentParameter



Terms and descriptions

CR (Capacitance)

Unit: F

1F=103mF =106F =109nF=1012pF

Rated tolerance: K=±10%，M=±20%。

Nominal Capacitance is nominal rated capacity of tantalum capacitor and is measured at 120 Hz, up to 1.0volt rms, and+25°C. DC bias causes only a small reduction in capacitance when full rated voltage is applied. Capacitance decreases with increasing frequency and increases with increasing temperature. Capacitance value decreases until gets to its SRF (between 0.5-5MHz, depending on different Capacitance value). Capacitor becomes inductive at frequency exceeding SRF.


VR (rated voltage)Rated voltage is the maximum DC operating voltage for continuous duty at -55℃~85℃.

TVEDCAJGeCode（V）

5035252016106.342.5Rated voltage（V）

The derated voltages (Vc)：Capacitor may operate at 125℃ with voltage derating to approximate two-thirds of rated voltage.

Surge voltage (Vs)：Surge voltage is the maximum voltage to which capacitors may be subjected under any momentary conditions, including the maximum AC pulse voltage, DC bias voltage and any momentary voltage.



Dissipation Factor is the measure of energy loss in tantalum capacitor. It is measured at 120 Hz, up to 1.0 volt rmsmaximum, and +25°C. The application of DC bias causes a small reduction in DF when full rated voltage is applied. Dissipation Factor is defined as the ratio between dissipation energy and accumulated energy, which is the ratio of the equivalent series resistance (ESR) to the capacitive reactance, (XC) and is usually expressed as a percentage. It is directly proportional to both capacitance and frequency. DF is also referred to as tanδ or “loss tangent.” The “Quality Factor,” “Q,” is the reciprocal of DF. DF increases with increasing frequency and decreases with temperature above +25°C and may also increase at lower temperatures.

tgδ (Dissipation Factor)

DF=ESR/Xc=2πfCR



I0 (Leakage Current)

DC leakage current is the current that, after a charging period,flows through a capacitor when voltage is applied. Leakage Current is decided by applied voltage, the time after the applied voltage and the temperature of component. Leakage Current is measured at +25°C, and rated voltage. Leakage Current will increase with the temperature and the applied voltage.



ESR (EQUIVALENT SERIES RESISTANCE)

A large ESR decrease the efficient of DC-DC converter and rise the ripple voltage.

Equivalent Series Resistance (ESR) is a total resistive loss of tantalum capacitor including internal resistance, contact resistance, the viscous force of dielectric and the defects caused by bypass channels. The main contributing source of ESR is the resistance of tantalum capacitor’s cathode material. ESR is not a pure resistance, and it decreases with increasing frequency. Thelevel of ESR affects tantalum capacitor’s capacity of withstanding surge current.


Ordering InformationTC 211 B 105 M 035 A① ② ③ ④ ⑤ ⑥ ⑦

③ External Dimensions (L×W) (mm)

P 2.0×1.2A 3.2×1.6B 3.5×2.8C 6.0×3.2

D/E 7.3×4.3

① Type

TC Chip Tantalum Capacitor

⑤ Capacitance Tolerance

K ±10%M ±20%

④ Nominal Capacitance

Example Nominal Value105 1.0uF106 10uF

⑦ Internal Code

A

② Series

211 Industrial212 Low ESR213 Low ESR，High surge voltage

⑥ Rated DC Voltage

002 2.5Vdc004 4Vdc006 6.3Vdc010 10Vdc016 16Vdc020 20Vdc025 25Vdc035 35Vdc050 50Vdc


Tantalum capacitors cross references

Series：211 Industrial212 Low ESR213 Low ESR，High surge voltage


/

SV/Z series

E/SV series

NEC

TC213 seriesTBW seriesT495 series

TC212 seriesTBC seriesT494 series

TC211 series

TAJ/TMC/TLJ/TRJ/TPS/TAC/TA

Z/TBJ/TLN series

T491series

SUNLORDAVXKEMET

Typical characteristics range


2.5~50V0.15~220uFB Size（3528）

4~50V0.47~330uFC Size（6032）

4~50V1.5~330uFD Size（7343-28）

4~50V10~680uFE Size（7343-41）

2.5~50V

2.5~20V

Voltage

A Size（3216）

P Size（2012）

Case

0.1~100uF

0.1~33uF

Capacitance


1. The reliability of Ta capacitor is influenced by many ambient condition elements, such as temperature, humidity, application force etc, margin designing is necessary to improve the reliability of Ta capacitor.

2. Take measures to make sure that Ta capacitors work in a Min. ripple current and voltage condition.

3. These capacitors are inherently polar devices and may be permanently damaged or destroyed if applied reverse voltage. But if reverse voltage can’t avoid, it must not exceed:

1）10% of VR or 1V at 25℃；

2）5% of VR or 0.5V at 85℃；

3）1% of VR or 0.1V at 125℃；

Application notices


4. In order to achieve high reliability, working voltage should obey:1） For general use, working voltage should be of 70% of VR or below.

For power lines or some low-impedance circuit, working voltage should be of 30% of VR or below.

2） When operating temperature is above 85℃(below 125 ℃), voltage derating is necessary:

Vmax=

T：operating temperature； VR： rated voltage at 85℃

5. When Ta capacitor are used in circuit where surge current may occurred, a small value resistor is needed to connect in series with capacitor to prevent from damaging.

6. Margin designing is necessary to improve the reliability of Ta capacitor especially in some circuit that easily lead to short-circuit.

Application notices


Some misunderstandings about

tantalum capacitors1. Voltage derating is Unnecessary due to high

reliability of Ta capacitors;

2. MLCC provider higher reliability even than Ta capacitors;

3. Ripple current has little influence upon the reliability of Ta capacitors;

4. Prefer to a smaller size Ta capacitor;

5. Inappropriate capacitance;

6. Prefer yellow to black Ta capacitor.


Content

Tantalum capacitors applications

Tantalum capacitors capabilities



Market status

Tantalum capacitors are widely applied in various fileds such as communication, PC. About 63% amount of chip tantalum capacitorsare used in cell phones, lap top, and AV products.

PC

AV Products

Cell Phone

Others


Filtering for power supply circuit

In power supply circuit, MLCC,

whose SRF are more than

hundreds of MHz, are often used

to suppress high frequency

noise. While Ta capacitors,

whose SRF are less than 100kHz,

are suitable for mid and low

band frequency noise

suppression. Connect them in

parallel would achieve a

excellent filtering performance.

Recommending PN:

TC211B157M006AA Ta capacitor of 150uF and a MLCC of 56pF are used in parallel.

NOKIA N97 phone power supply circuit


For MP3 power supply circuit

Recommending PN：TC211B107M006A

Filtering for power supply circuit


MTK6235 Audio circuit

Ta capacitor and resistor work together as a RC filter, blocking the DC bias into earphone.

With a good filtering capability in low band frequency, Ta capacitor help earphone achieve a good bass effect.

Recommending PN ：TC211B107M006A

Filtering for Audio circuit


Energy storage

LED lighting

In this LED driving circuit, Ta capacitors are used as a storage capacitor.

Recommend PN:

TC211B106M006A

TC211D226M025A

THANK YOU!


Solid Tantalum Chip Capacitors - Sunlord...

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