Elecsound Blog

Elecsound is a manufacturer of trimming potentiometers, pcbs, capacitors, leds and resistors

Ceramic Capacitors and Tantalum Capacitors

Ceramic Capacitors
Elecsound is a manufacturer and very speciallized in ceramic capacitors, including:
disc ceramic capacitors,high voltage disc ceramic capacitors, Radial, Axial and SMD multilayer ceramic capacitors,
Y1 and Y2 ceramic capacitors as well as ceramic trimmer capacitors, we offer high quality with competitive prices, lead free and speedy delivery in 3–5 days.
Disc ceramic capacitors low voltage
Disc ceramic capacitor high voltage
AC Safe Ceramic Capacitor Y1 and Y2
Radial Multilayer ceramic capacitors
Axial Multilayer ceramic capacitors
Chip Multilayer ceramic capacitors
6mm ceramic trimmer capacitors
5mm ceramic trimmer capacitors
Tantalum Capacitors
Elecsound can offer tantalum capacitors with dipped type and SMD type. we offer very attractive prices for this.

Chip Tantalum Capacitor

Our Chip Tantalum Capacitor are excellent in quality and price.
Capacitance 0.1pf~680uf
Rated Voltage Based on specific model
Operating Temperature -55 degree~125 degree
A case: 3216
B case: 3528
C case: 6032
D case: 7343
E case: 7343H
V case: 7361
Packing code: A: 7 inches. 13 inches
K: +/-10% M: +/-20%

Dipped Tantalum Capacitors

Elecsound can offer tantalum capacitors with dipped type and SMD type. we offer very attractive prices for this. Here is our dipped type.
The tantalum capacitor is a highly reliable type of surface mount solid capacitor or electrolytic capacitor.
Surface mount tantalum capacitors are increasingly being used in circuit designs because of their volumetric efficiency, basic reliability and process compatibility.
Features
Small units with high stable performance
Lower current leakage and dissipation factor
Stable frequency, temperature and long life
Suitable for military equipments,  computer, telephone
Meeting IEC384-15-3 and GB7215-87 standard
Rohs Compliant

tantalum-capacitors

Elecsound is a manufacturer of tantalum capacitors. We offer dipped tantalum capacitors and SMD type tantalum capacitors.
CA42 Dipped Tantalum Capacitors
CA45 SMD Tantalum Capacitors

tantalum-capacitor

A tantalum capacitor is comprised of a permeable tantalum center section surrounded by tantalum pentoxide. A tantalum wire is inserted into the center section and then extends axially from the component. The tantalum pentoxide layer is coated with manganese dioxide, graphite, a silver conductive coating and (finally) solder. Tantalum capacitors are a form of electrolytic capacitor. However, some forms of them are non-polar, containing two capacitors connected in series(negative to negative). In comparison with Aluminium electrolytic capacitors, they are for similar capacitance and volume ratings generally more expensive, with lower effective series resistance. They usually have longer life, especially at moderately elevated temperatures. For surface mount devices, they are generally smaller.

advantages-of-Tantalum-Capacitors

The advantages of Tantalum Capacitors
High reliability: Tantalum Capacitors are more reliable than many other forms of capacitor. Provided they are operated within their ratings they are able to provide an almost unlimited life. Their use is not time limited as in the case of electrolytic capacitors.

Tantalum-Electrolytic-Capacitors

The very first tantalum capacitors used the same etched foil principle as the aluminium electrolytic. However, they differed in their choice of electrolyte. Believe it or not, wet tantalum capacitors contain sulphuric acid! In order to contain this corrosive material, wet tantalum capacitors use a solid silver case to contain the wound foil, and the connections are made through glass-to-metal seals. The resulting capacitor is extremely effective, with low ESR, and has a reputation for reliability. It is not cheap!
The solid tantalum capacitor takes a totally different approach, creating a sponge of high purity tantalum powder around a tantalum wire by pressing tantalum powder into a small slug around the lead and then sintering it at high temperature (around 1800°C).
The powder from which tantalum capacitors are made is of pure tantalum metal, with a typical particle size of 10µm. Differently shaped particles are available for different applications, depending on the voltage and capacitance required – if you want to know the detail of the process, read John Gill’s paper Basic Tantalum Capacitor Technology on the AVX website (http://www.avxcorp.com)
At this stage, we have a tantalum wire attached to a slug of tantalum sponge and the next stage is producing the dielectric layer of tantalum and oxide. The slugs are dipped into a weak acid, such as phosphoric acid, at elevated temperature, and the voltage gradually increased (whilst controlling the current) in order to create an oxide layer of the correct thickness.
The next stage is to produce the cathode plate, making contact to every part of the top surface of the oxide. This is carried out by dipping the slug into manganese nitrate, and then baking it to convert the nitrate into manganese dioxide. Repeated several times, to ensure that the slug is fully penetrated and a thick coating built on the outside surface, this ‘manganised anode’ is then coated with graphite and finally a metal layer such as silver. The cathode (that is the second capacitor electrode, or ‘counter-electrode’) is the combination of silver, graphite and manganese dioxide. All slugs are made in this way, whatever the eventual encapsulation.
The simplest encapsulation is to attach a lead to the cathode and dip body and leads into either liquid resin or resin powder, in order to create the typical ‘dipped’ tantalum capacitor. For surface mount use, the finished part may be dipped, or moulded in plastic as shown in Figure 4, giving the component adequate mechanical properties and environmental resistance. There are substantial differences in cost and volumetric efficiency between different styles, but the moulded format is generally preferred.

Tantalum-Electrolytic-Capacitors

The very first tantalum capacitors used the same etched foil principle as the aluminium electrolytic. However, they differed in their choice of electrolyte. Believe it or not, wet tantalum capacitors contain sulphuric acid! In order to contain this corrosive material, wet tantalum capacitors use a solid silver case to contain the wound foil, and the connections are made through glass-to-metal seals. The resulting capacitor is extremely effective, with low ESR, and has a reputation for reliability. It is not cheap!
The solid tantalum capacitor takes a totally different approach, creating a sponge of high purity tantalum powder around a tantalum wire by pressing tantalum powder into a small slug around the lead and then sintering it at high temperature (around 1800°C).
The powder from which tantalum capacitors are made is of pure tantalum metal, with a typical particle size of 10µm. Differently shaped particles are available for different applications, depending on the voltage and capacitance required – if you want to know the detail of the process, read John Gill’s paper Basic Tantalum Capacitor Technology on the AVX website (http://www.avxcorp.com)
At this stage, we have a tantalum wire attached to a slug of tantalum sponge and the next stage is producing the dielectric layer of tantalum and oxide. The slugs are dipped into a weak acid, such as phosphoric acid, at elevated temperature, and the voltage gradually increased (whilst controlling the current) in order to create an oxide layer of the correct thickness.
The next stage is to produce the cathode plate, making contact to every part of the top surface of the oxide. This is carried out by dipping the slug into manganese nitrate, and then baking it to convert the nitrate into manganese dioxide. Repeated several times, to ensure that the slug is fully penetrated and a thick coating built on the outside surface, this ‘manganised anode’ is then coated with graphite and finally a metal layer such as silver. The cathode (that is the second capacitor electrode, or ‘counter-electrode’) is the combination of silver, graphite and manganese dioxide. All slugs are made in this way, whatever the eventual encapsulation.
The simplest encapsulation is to attach a lead to the cathode and dip body and leads into either liquid resin or resin powder, in order to create the typical ‘dipped’ tantalum capacitor. For surface mount use, the finished part may be dipped, or moulded in plastic as shown in Figure 4, giving the component adequate mechanical properties and environmental resistance. There are substantial differences in cost and volumetric efficiency between different styles, but the moulded format is generally preferred.

Better-Price-for-SMD-tantalum-capacitors

Better Price for SMD tantalum capacitors
Are you in need of tantalum capacitors? Did you loss some orders due to prices and lead time problem? Since last Feb the price for tantalum capacitors is increased a lot but now I can help you to solve the problem. Now we have strong offer for tantalum capacitors . We cut down our price for 10% to 25%. If you need tantalum capacitors pls believe that we are your best choice
Tantalum capacitors
CA42 Dipped Tantalum Capacitors
CA45 SMD Tantalum Capacitors

SMD-Tatalum-Capacitor-Stock

Now we have stock offer for below Tatalum Capacitor items. Quantity is 10kpcs and lead time is about 2 business days after payment got. Do you need any? If yes, please advise the qty you need and ask for price. I believe the price will be very competitive. And I will be very thankful if I can get your feedback by today.

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