Solid Tantalum Chip Capacitors. Shenzhen Sunlord Electronics Co., Ltd

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Darren Franklin
6 years ago
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1 Solid Tantalum Chip Capacitors

2 Content Tantalum capacitors capabilities Tantalum capacitors applications

3 Features of tantalum capacitor Solid chip tantalum capacitor provides excellent characteristics and can operate in a wide temperature range. It has unique features: Advantage 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 Disadvantage Low rated voltage Polarity limited High price

4 Construction Tantalum Positive Pole Tantalum Wire MnO2 Coat Silver Coat Ta 2 O 5 Coat Carbon, Silver Layer Positive Terminal Molded Case Negative Terminal

5 Tantalum capacitor electrical parameter Parameter Test Equipment Test frequency Test signal C R (Capacitance) HP4263B 120Hz 1000mV tgδ (Dissipation factor) HP4263B 120Hz 1000mV I 0 (leakage current) TH2686 DC V R ESR HP4263B 100kHz /

6 Terms and descriptions C R (Capacitance) Unit: F 1F=10 3 mf =10 6 F =10 9 nf=10 12 pf 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.

7 Terms and descriptions V R (rated voltage) Rated voltage is the maximum DC operating voltage for continuous duty at -55 ~85. Rated voltage (V) Code(V) e G J A C D E V T 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.

8 Terms and descriptions tgδ (Dissipation Factor) DF=ESR/Xc=2πfCR Dissipation Factor is the measure of energy loss in tantalum capacitor. It is measured at 120 Hz, up to 1.0 volt rms maximum, 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.

9 Terms and descriptions I 0 (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.

10 Terms and descriptions ESR (EQUIVALENT SERIES RESISTANCE) 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. The level of ESR affects tantalum capacitor s capacity of withstanding surge current. A large ESR decrease the efficient of DC-DC converter and rise the ripple voltage.

11 Ordering Information TC 211 B 105 M 035 A Type TC Chip Tantalum Capacitor 4 Nominal Capacitance Example Nominal Value uF uF 7 Internal Code A 2 Series 211 Industrial 212 Low ESR 213 Low ESR,High surge voltage 5 Capacitance Tolerance K ±10% M ±20% 3 External Dimensions (L W) (mm) P A B C D/E Rated DC Voltage Vdc 004 4Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc

12 Tantalum capacitors cross references Series: 211 Industrial 212 Low ESR 213 Low ESR,High surge voltage KEMET T491series T494 series T495 series AVX TAJ/TMC/TLJ/T RJ/TPS/TAC/TA Z/TBJ/TLN series TBC series TBW series NEC E/SV series SV/Z series / SUNLORD TC211 series TC212 series TC213 series

13 Typical characteristics range Case P Size(2012) Capacitance 0.1~33uF Voltage 2.5~20V A Size(3216) 0.1~100uF 2.5~50V B Size(3528) 0.15~220uF 2.5~50V C Size(6032) 0.47~330uF 4~50V D Size( ) 1.5~330uF 4~50V E Size( ) 10~680uF 4~50V

14 Application notices 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 V R or 1V at 25 ; 2)5% of V R or 0.5V at 85 ; 3)1% of V R or 0.1V at 125 ;

15 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; V R : rated voltage at 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.

16 Some misunderstandings about tantalum capacitors 1. 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.

17 Content Tantalum capacitors capabilities Tantalum capacitors applications

18 Market status Tantalum capacitors are widely applied in various fileds such as communication, PC. About 63% amount of chip tantalum capacitors are used in cell phones, lap top, and AV products. Others PC Cell Phone AV Products

19 Filtering for power supply circuit NOKIA N97 phone power supply circuit A Ta capacitor of 150uF and a MLCC of 56pF are used in parallel. 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: TC211B157M006A

20 Filtering for power supply circuit For MP3 power supply circuit Recommending PN:TC211B107M006A

21 Filtering for Audio 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

22 Energy storage LED lighting In this LED driving circuit, Ta capacitors are used as a storage capacitor. Recommend PN: TC211B106M006A TC211D226M025A

23 THANK YOU!

Tantalum Wet Electrolytic Capacitor

INTRODUCTION The structure of a Tantalum Wet Electrolytic Capacitor consists of four main elements: a primary electrode (anode), dielectric, a secondary electrode system (cathode) and a wet (liquid) electrolyte.