Kingtronics Blog

A. Because the capacity of electrolytic capacitors is much larger than that of general fixed capacitors, the appropriate range should be selected for different capacities when measuring. In general, the capacitance between 1 ~ 47μF can be measured by R × 1k, and larger than 47μF can be measured by R × 100.
A、因為電解電容的容量較一般固定電容大得多，所以，測量時，應針對不同容量選用合適的量程。一般情況下，1～47μF間的電容，可用R×1k擋測量，大於47μF的電容可用R×100擋測量。

B. Connect the red meter to the negative pole and the black meter to the positive pole. At the moment of contacting, the pointer deflects to the right largely (for the same resistance, the larger the capacity, the larger the swing), and then gradually turn left until it stops at a certain point, which is  the forward leakage resistance that is slightly larger than the reverse leakage resistance. The leakage resistance should generally be above hundreds kΩ, otherwise, it will not work properly. In the test, if there is no charging phenomenon in the forward direction and the reverse direction, that is the needle does not move, which means that the capacity disappears or the internal circuit is broken. If the resistance measured is small or zero, it indicates that the capacitor is large leakage resistance or has been broken and damaged, cannot be use any more.
B、將萬用表紅表筆接負極，黑表筆接正極，在剛接觸的瞬間，萬用表指針即向右偏轉較大偏度(對於同一電阻擋，容量越大，擺幅越大)，接着逐漸向左迴轉，直到停在某一位置。此時的阻值便是電解電容的正向漏電阻，此值略大於反向漏電阻。電解電容的漏電阻一般應在幾百kΩ以上，否則，將不能正常工作。在測試中，若正向、反向均無充電的現象，即錶針不動，則說明容量消失或內部斷路;如果所測阻值很小或為零，說明電容漏電大或已擊穿損壞，不能再使用。

C. For the electrolytic capacitor whose signs are unknown, it can be discriminated by using the above method. Frist, measure the leakage resistance at randomly and remember its swing. Then, exchange the test leads to measure a resistance. In two measurements, the large resistance is the forward connection, that is the black meter is connected to the positive pole and the red one is connected to the negative pole.
C、對於正、負極標誌不明的電解電容器，可利用上述測量漏電阻的方法加以判別。即先任意測一下漏電阻，記住其大小，然後交換表筆再測出一個阻值。兩次測量中阻值大的那一次便是正向接法，即黑表筆接的是正極，紅表筆接的是負極。

D. Via the multimeter to charge the electrolytic capacitor from the positive and the reverse side, the capacity can be estimated according to the magnitude of the swinging.
D、使用萬用表電阻擋，採用給電解電容進行正、反向充電的方法，根據指針向右擺動幅度的大小，可估測出電解電容的容量。

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Kingtronics complete production lines: 

DIP and SMD Tact Switches

Active components:

Bridge Rectifiers, Diodes & Transistors

Axial and SMD Gas Tube Surge Arresters

Passive components:

Aluminum Elec. Capacitors

Radial/Axial Multilayer Ceramic Capacitors and Tantalum Capacitors

SMD 3mm Ceramic Trimmer Capacitor

Trimming Potentiometers

Quartz Crystals and Oscillators

Multilayer Ceramic Capacitors

Various types :

1. AKT  -- Axial multilayer meramic vapacitors
2. MKT -- Radial multilayer ceramic capacitors
3. LKT -- Chip multilayer ceramic capacitors (6.3V to 50V)
4. HKT -- High Voltage chip mlcc capacitors (63VDC to 4000VDC)

Common usage:  

Temp range-- X7R, NPO, Y5V
Voltage: 6.3V~4000V   
Package—Bulk, Ammo, Tape & Reel 

Wide Applications :

Power supplier
GSM & Cable Modem, Telephone, Mobile phones
Vacuum cleaner board
LED Lamp, LCD module 
Intercom systems, Radio
Speed control, Remote control
Electronics Water meter
Receiving module
Mobile charger
Home appliances including air-conditioner, microwave , oven…etc

Contact us now info@kingtronics.com or related sales help you get the offer in the first time ! 

Dear sir or madam,

Maybe you are confused how to find a stable and qualified supplier, I think this blog can help you!
We are electronics components factory and have been engaged in manufacting of passive and active parts for many years.—Kingtronics (HK based ISO 9001:2008 manufacturer since 1990.)

You will be able to generate more sales & profits with our below newly promoting items. Do you have order plan before Christmas Day ? you can buy some as stocks in the coming years.

TKT--Dipped Tantalum Capacitor 
MKT--Radial Multilayer Ceramic Capacitor
AKT--Axial Multilaer Ceramic Capacitor
Diode & Bridge Rectifier: Diode M7, LL4148, S1M, GS1M, SM4007, UF4007, 1A7, 6A10, 1N4937, 1N5343B 
Kindly send us your inquiry, we will prepared a best price for you.

More products information detail,pls kindly view our website:www.kingtronics.com

Kt Kingtronics AKT--Axial Multilayer Ceramic Capacitors

Datasheet:  http://www.kingtronics.com/mlcc-capacitors/

The fundamental electrical properties of multilayer ceramic capacitors are as follows:

Polarity: Multilayer ceramic capacitors are not polar, and may be used with DC voltage applied in either direction.

Rated Voltage: This term refers to the maximum con tinuous DC working voltage permissible across the entire operating temperature range. Multilayer ceramic capacitors are not extremely sensitive to voltage, and brief applications of voltage above rated will not result in immediate failure. However, reliability will be reduced by exposure to sustained voltages above rated.

Like all other practical capacitors, multilayer ceramic capacitors also have resistance and inductance. A simplified schematic for the equivalent circuit is shown in Figure 1. Other significant electrical characteristics resulting from these additional properties are as follows：

Impedance: Since the parallel resistance (Rp) normally very high, the total impedance of the capacitor is ：

The variation of a capacitor’s impedance with frequency determines its effectiveness in many applications.

Diode rectifier M7:  Lead time: 3-4 weeks

Price is much better than Diotec, Panjit, Vishay, Onsemi...

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Diode Package:

Ceramic capacitors have a variety of different ceramic dielectrics as the basis of the capacitor. Ceramic dielectrics are made from a variety of forms of ceramic dielectric. The exact formulas of the different ceramics used in ceramic capacitors vary from one manufacturer to another but common compounds include titanium dioxide, strontium titanate, and barium titanate.

The actual performance of the ceramic capacitors is highly dependent upon the dielectric used. Using modern dielectrics, very high values are available, but it is also necessary to check parameters such as the temperature coefficient and tolerance. Different levels of performance are often governed by the dielectric used, and therefore it is necessary to choose the type of dielectric in the ceramic capacitor.

Kingtronics www.kingtronics.com  produce and sell Ceramic Capacitors all types. Multilayer Ceramic Capacitors are available in four series in Kingtronics: AKT Series Axial Lead, Axial MLCC Capacitors(Multilayer Ceramic Capacitors), MKT Series Radial MLCC Capacitors(Multilayer Ceramic Capacitors), LKT Series Chip MLCC.

Multilayer Ceramic Capacitor(MLCC) is an electronic part that temporarily stores an electrinical charge and the most prevalent type of capacitor today.New technologies have enabled the MLCC manufacturers to follow the trend dictated by smaller and smaller electronic devices such as Cellular telephone,Computers,DSC,DVC,GPS.

Besides chip mlcc capacitor, Kingtronics radial mlcc capacitor (mono capacitor) is unbeatable in the market - Good price, High quality and Short lead time.

Tokyo, Oct 13, 2010 (JCN Newswire via COMTEX) -- Showa Denko K.K. (SDK) will expand nanoparticle titanium-oxide production capacity at its fully-owned subsidiary Showa Titanium Co., Ltd., from 180 tons a month at present to 240 tons a month as from June 2011. The product, sold under the trade name of Super-Titania(TM), is used in the production of multilayer ceramic capacitors (MLCC Capacitors).

MLCC Capacitors are used mainly in electronic devices that require small size and light weight, such as PCs and mobile phones, as well as in such digital electric appliances as flat-panel TVs. Reflecting increasing demand for these products, the MLCC market is expected to continue growing at around 10% a year.

Under the circumstances, Showa Titanium will enhance the efficiency of production facilities for Super-Titania for MLCC applications and increase the number of production lines from three to four.

Titanium oxide (TiO2) is used in the production of barium titanate (BaTiO3), which is then used as raw material for dielectric*, one of the basic components of MLCC Capacitors. Furthermore, to produce small and high-capacity MLCC Capacitors, it is necessary to obtain high-purity, fine-particle BaTiO3. While there are two different processes for the production of BaTiO3 (solid-phase and liquid-phase**), fine-particle TiO2 is required for the solid-phase process, which enables low-cost production of BaTiO3 with superior dielectric properties. As Showa Titanium uses the most advanced process control technology, the company can provide Super-Titania in ultra-fine particle sizes, ranging from 15 to 250 nm (1 nm:one-millionth of mm). The product also has high purity, ensuring the production of MLCC Capacitors with smaller size and higher capacity.

In addition to the MLCC application, Super-Titania is used in various fillers and photocatalysts. To meet diversified needs of customers, we will provide high-quality products in a stable manner, establishing our leading position on the market.

* Dielectric: A material which is an electrical insulator, having the capability to store electricity and to discharge electricity instantly. As its dielectric properties improve, dielectric comes to have higher capacity to store electricity.

** Solid-phase and liquid-phase: Processes for the production of fine ceramics, including BaTiO3. In the solid-phase process, materials are mixed, and baked at high temperatures, resulting in synthesis of compounds through chemical reactions. In the liquid-phase process, materials are dissolved in a solution and undergo chemical reactions. Then the materials are baked at low temperatures, and converted into compounds.