Kingtronics Blog

What is Tantalum Capacitors?

Tantalum capacitors are a subtype of electrolytic capacitors. They are made of tantalum metal which acts as an anode, covered by a layer of oxide which acts as the dielectric, surrounded by a conductive cathode. The use of tantalum allows for a very thin dielectric layer. This results in a higher capacitance value per volume, superior frequency characteristics compared to many other types of capacitors and excellent stability over time. Tantalum capacitors are generally polarized, which means that they may only be connected to a DC supply observing the correct terminal polarity. The downside to using tantalum capacitors is their unfavorable failure mode which may lead to thermal runaway, fires and small explosions, but this can be prevented through the use of external failsafe devices such as current limiters or thermal fuses. Technology advances allow tantalum capacitors to be used in a wide variety of circuits, often found in laptops, automotive industry, cell phones and others, most often in the form of surface mounted devices (SMD). These surface mount tantalum capacitors claim much less space on the printed circuit board and allow for greater packing densities.

Tantalum Capacitors is the ideal products for TV, video recorder, computer, program-controlled switch, telephone, instrument, and other civil electronic complete machines.

Since Tantalum Capacitors is widely used and may manufactures was affected by the spread of the epidemic in Europe and the United States. The price for the Tantalum Capacitors may be double by the end of this year.

Therefore, if you have any inquiry on hand, it is time to share your inquiry with Kingtronics.

Tantalum capacitors are products that are small in size and can achieve larger capacitance. They were first developed by USA Bell Laboratories in 1956 and have excellent performance. Tantalum capacitors have various shapes and are made into small and chip components suitable for surface mounting. Tantalum capacitors are used not only in military communications, aerospace and other fields, but also widely applied in industrial control, film and television equipment, communication instruments and other products.

Advantage

The full name of tantalum capacitor is tantalum electrolytic capacitor, which is also a kind of electrolytic capacitor. It uses metal tantalum as the medium, instead of electrolyte like ordinary electrolytic capacitors use. Tantalum capacitors do not need to use aluminum-plated capacitor paper winding like ordinary electrolytic capacitors. The system has almost no inductance, but this also limits its capacity.

In addition, since there is no electrolyte inside the tantalum capacitor, it is very suitable for working under high temperature. This unique self-healing performance guarantees the advantages of long life and reliability. Solid tantalum capacitors have excellent electrical properties, a wide operating temperature range, various forms, and excellent volumetric efficiency. They have their unique characteristics: the working medium of tantalum capacitors is a very thin tantalum pentoxide film formed on the surface of tantalum metal. The oxide film dielectric of this layer is integrated with one end of the capacitor and cannot exist alone. Therefore, it has a very high working electric field intensity per unit volume, and has a particularly large capacitance, that is, a very high specific capacity, so it is particularly suitable for miniaturization.

Disadvantage

The capacity is smaller, the price is more expensive than the aluminum capacitor, and the withstand voltage and current capability are weak. It is used in places with high-capacity filtering. For example, tantalum capacitors can be seen near the CPU socket. They are mostly used in conjunction with ceramic capacitors and electrolytic capacitors or used in places where voltage and current are not high.

Filtering performance

The performance of tantalum capacitor is excellent. It is a product with a small size and a larger capacitance among the capacitors. There are few competitors in the use of power supply filtering and AC bypass.

Tantalum electrolytic capacitors have properties such as power storage, charging and discharging, and are mainly used in filtering, energy storage and conversion, symbol bypass, coupling and decoupling, and time constant components. Please pay attention to its performance characteristics in the application. Correct use will help to give full play to its functions. For example, consider the working environment of the product and its heating temperature, and take measures such as derating use. Improper use will affect the working life of the product.

In the working process of tantalum capacitors, it has the performance of automatically repairing or isolating the defects in the oxide film, so that the oxide film medium can be strengthened at any time and restore its proper insulating ability without continuous cumulative damage. This unique self-healing performance guarantees the advantages of long life and reliability.

The types of capacitors that are used in the industrial end-use market segment include primarily plastic film capacitors, ceramic capacitors; aluminum electrolytic capacitors; but also to a lesser extent carbon supercapacitors and tantalum capacitors as is shown in the chart below.

For the application of capactiors, listed as below. Are you one of the professional manufacturer from below industry? 
Kingtronics can help you with our great capacitors and Diodes solutions. Welcome send mail to info@kingtronics.com for more and detailed quotation.

*Power Transmission and Distribution
*Motors and Drives
*Renewable Energy
*Lasers (industrial and medical)
*Defibrillator (external only)
*X-Ray machines (pulsed)
*Ultrasonics (pulse welders, cleaners)
*Airport runway strobes
*Pulse forming networks for radar
*Water purification
*Railgun power
*Missile power-up
*Food sterilization
*Marx generators
*Television and radio transmitters

Kingtronics produce and sell a wide variety of Aluminum Electrolytic Capacitors with long life, low Impedance and excellent performance options.

Following Kingtronics Radial type e-cap series could be used in LED, Lighting industry production with excellent lead time and price support.

Welcome check our product data for further best quotation.

Application: LED lighting, LED driver, LED lamps, electronic ballast

E-cap product catalog: https://www.kingtronics.com/pdf/Kingtronics-Aluminum-Electrolytic-Capacitors-Catalog.pdf

Radial Type Aluminum Electrolytic Capacitors video: https://www.youtube.com/watch?v=5W2p5P0Sa0A&t=6s

What is a diode? A diode is a semiconductor device that essentially acts as a one-way switch for current. An ideal diode will have zero resistance in one direction, and infinite resistance in the reverse direction. They are also known as rectifiers because they change alternating current (AC) into pulsating direct current (DC).

Common package diodes in daily life, such as SOD123, SOD323, SOD523, SOT23, ZMM series LL34 package, ZM47**A series LL41 package, BZX55C series DO35 package and so on.

We will offer you a nice price whether it is a plastic package diode or a glass packaged diode. Let us know by info@kingtronics.com, if you are interested.

Kingtronics provides a stable and good quality Ceramic Trimmer Capacitors with good lead time.

Although Murata stop offer TZC3 series, but with Kingtronics 3MM Ceramic Trimmer Capacitors (KKT series) you do not need to worry about it.  

Welcome for any inquiry.

Features
*Low capacitance drift
*High durability from vibration, dust, moisture and flux
*Color coded case permits easy identification
*Very good Q and high resonant frequency
*Designed for reflow soldering.
*Small size with external dimension of 3.2(W) x 4.5(L) x 1.5(T) mm

Applications
*Remote Keyless Entry System, Measuring Instrument
*Car Alarm Remote Controller, Car Audio, Traffic Card Reader
*Security System, Wireless Microphone
*Cordless Phone, Wireless Repeater
*Two-Way Radio Communication (FRS, GMRS, LMR)
*TCXO, VCXO, RF Module, RFID, DVD 

Product Video: https://www.youtube.com/watch?v=Men9BCDlODk

Lead Time: Regular stock ~ 4 weeks

Cross reference for Kingtronics and Murata P/N

Kingtronics diodes are superior compared with NXP Semiconductors, Diodes and Nexperia, both in price and lead time，and the qualities of products are the same.

The application areas of diodes include television systems as phase detectors, limiters, clampers; computer systems as logic gates, clampers; power supply systems as rectifiers and inverters; communication systems as limiters, clippers, and gates.

The best-selling package in the diode market:

1.N-Channel Power MOSFETs 2SK3018 SOT-323: 
Plastic, surface-mounted package; 3 leads; Small-outline transistor; N-channel MOSFET; Fast  switching speed.

2. N-Channel Power MOSFETs 2N7002DW SOT-363: 
Plastic, surface-mounted package; 6 leads; Small-outline transistor; Dual N-Channel; Enhancement Mode ;Field Effect Transistor.

3. SOD-123 Silicon Epitaxial Planar Diode BAV21W: 
Schottky Diodes & Rectifiers; High Voltage Switching Diodes;

4. SOD-323 Schottky Barrier Rectifier BAT54WS: 
Small signal Schottky diodes, Diodes and Rectifiers manufactured; for low current rectifier circuit applications; low forward voltage.

5. SOT-23 Schottky Barrier Rectifier BAT54C: 
A small outline transistor (SOT) is a family of small footprint, discrete surface mount transistor commonly used in consumer electronics; 3 leads: Surface mount device.

6. Silicon Epitaxial Planar Zener Diodes ZMM1-ZMM75: 
LL-34 Diodes MiniMELF case especially for automatic insertion; Hermetically Sealed Glass Zener Voltage Regulators; These diodes are also available in DO-35case with the type designation BZX55C.

7. Silicon Planar Power Zener Diodes ZM4728-ZM4761: 
Glass case LL41 Small Signal Schottky Diode; available in DO-41case.For general purpose applications

8. Zener Diodes BZX55C: 
Axial lead Silicon Planar Zener Diodes; DO-35 package (JEDEC), Best suited for Industrial, Military and Space Applications. The glass passivated diode chip in the hermetically sealed glass package with double studs provides excellent stability and reliability.

9. Silicon Planar Power Zener Diodes 1N4727A-1N4761A: 
1N47 Series Zener Diodes,1W DO-41, Zener voltage regulator diodes, Hermetically sealed glass silicon zener diodes; for use in stabilizing and clipping circuits with high power rating.

Yageo said that due to the 5G driving demand for tantalum capacitors and the price increase effect driven by the epidemic, it is estimated that the price of tantalum capacitors will double by the end of this year.

Tantalum capacitors and MLCC, aluminum electrolytic, and film capacitors are the four commonly used capacitors in the industry. Tantalum capacitors have high density, high reliability and stability, and wide temperature range characteristics. They are widely used in industrial and consumer markets. According to statistics, in 2019 The global market size is approximately USD 1.6 billion.

Tantalum capacitors are widely used in fast charging devices for mobile phones due to their stable output and small size. In addition, tantalum capacitors are also ideal choice for 5G devices with large outdoor temperature changes and high requirements for service life and reliability. With the start of 5G commercial use, 5G base stations will be deployed in large numbers, which will increase the demand for tantalum capacitors.

At present, international tantalum capacitor manufacturers represented by the US companies VISHAY, KEMET, and AVX dominate the international tantalum capacitor market. However, due to the spread of the epidemic in Europe and the United States in the second quarter, the production capacity of overseas manufacturers was affected, and the gap between supply and demand expanded. AVX took the lead in May this year increase the price by 10%-15%. Yageo stated that the price increase of some items will take effect from May until the end of September; since manufacturers increased their prices, the surrounding spot retail sales have increased by 2 to 3 times, and the industry predicts that the price increase may be doubled by the end of this year. 

It does not seem that suppliers are alarmist. Under the influence of the epidemic and many uncertain factors in the international supply chain, the price surge of tantalum capacitors may intensify.

Kingtronics is honored to be listed as a leading global manufacturer of Radial MLCC in the global market research report.

We produce and sell Radial MLCC with excellent quality and lead time around: 3-5 weeks ! Welcome your inquiry to check our best offers.

MKT—Radial Multilayer Ceramic Capacitor (NPO, X7R, Y5V) Output 100kk/month
Product datasheet: https://www.kingtronics.com/pdf/radial-mlcc-capacitors.pdf

AKT—Axial Multilayer Ceramic Capacitor (NPO, X7R, Y5V) Output 5kk/month
Product datasheet: https://www.kingtronics.com/pdf/axial-mlcc-capacitors.pdf

Kingtronics MLCC Multilayer Ceramic Capacitors Factory: https://www.youtube.com/watch?v=7J2jbfXuoc4

**Cross reference:

Kingtronics	AVX	Kemet	Vishay	Nippon	TDK	Panasonic
MKT Series	SR, SA Series	C315-C350	K (Mono Cap)	THD Series	FK Series	ECU-S

The structural material for aluminum electrolytic capacitors and their impacts on sound quality are summarized in below table. 

A skillful material combination is essential in providing superior sound performance.

Our qualified axial type Aluminum ecap can be your product solutions. Welcome your request.