Capacitors Blog

Suntan Technology Company Limited
----All Kinds of Capacitors

There is one other common packaging for integrated circuits and this is the PGA or Pin Grid Array. The BGA looks physically similar to a Pin Grid Array package. Both are one-sided; that is, only one face of the semi-conducting substrate is used for printing and mounting of circuit components. Moreover, both have an obvious grid-like pattern. However, the Pin Grid Array uses pins - thus, the name - whereas the BGA uses balls - as it has already been mentioned above. The pins (in the PGA) or the balls (in the BGA) are the materials through which electricity is conducted between the printed surface of the semiconductor board and the surface-mounted circuit components.http://www.capacitors.hk/

Suntan Technology Company Limited
----All Kinds of Capacitors

What is Gold Capacitor?
The storage cell that used absorption/release reaction of ions;
No expendable chemical reaction while charge and discharge

Gold Capacitor Features:
Quick charge and discharge are available;
High capacitance

Gold Capacitor Applications:
Coin type: Back-up for memory;
Wound type: Motor drive, Back-up for solar battery

Suntan Technology Company Limited
----All Kinds of Capacitors

Trimming Potentiometers is used by more and more products, its application including satellite receivers, modems, LCD displays, set-top boxes, and meters and instruments, as well as entertainment devices, such as cameras, and MP3 players...

We can accept very small quantity with very competetive price , the delivery time is 2 weeks around. With our good support , our sales is keep increasing each month.

Suntan can offer all kinds of Trimming Potentiometers, as below:

TSR-3006 - Rectangular Trimming Potentiometers
TSR-3323 - 7 Terminal Square Trimming Potentiometers
TSR-3296 - 5 Terminal Square Trimming Potentiometers
TSR-3362 - 9 Terminal Square Trimming Potentiometers
TSR-3386 - 8 Terminal Square Trimming Potentiometers
TSR-3329 - Circularity Trimming Potentiometers
TSR-3266 - 5 Terminal Square Trimming Potentiometers
TSR-3318 - 6mm Phenolic Round Trimming Potentiometers
TSR-3306 - 6mm Cermet Round Trimming Potentiometers
TSR-3309 - 9mm Round Trimming Potentiometers
TSR-065 - Phenolic Trimming Potentiometers
TSR-3590 - Precision Multiturn Wirewoud Potentiometer
TSR-105H - 6 Terminal Trimming Potentiometers

Suntan Technology Company Limited
---All Kinds of Capacitors

Dielectric absorption in a capacitor is difficult to characterize accurately because of the very wide range of the time constants involved and because of the high level of performance required in the measuring equipment. To get a good characterization, the capacitor response must be measured for a range of frequencies at least three decades higher and lower than 1/τ0. Frequency domain measurements must be made with vector impedance analyzers that can accurately resolve a small resistive component in a largely reactive impedance (they must be able to accurately measure large values of Q). In the frequency domain the resistive portion of the impedance gives the most information about dielectric absorption. In the time domain, which is usually used for measurement longer than 100 ms, an ammeter is needed with very low bias current and the ability to resolve very low currents. If these instruments are available, then an accurate and complete model can be made, but such a model is often not required. To completely model dielectric absorption would require, in most cases, a range of accuracy that spans ten decades of frequency or more. Generally, however, the application does not warrant such a model and one can get by with a model that is faithful to the behavior of the physical component over a much smaller range of frequencies.

Suntan Technology Company Limited
----All Kinds of Capacitors

On capacitors that are large enough (e.g. electrolytic capacitors) the capacity and working voltage are printed on the body without encoding. Sometimes the markings also include the maximum working temperature, manufacturer's name and other information.

Smaller capacitors use a shorthand notation, to display all the relevant information in the limited space. The most commonly used format is: XYZ J/K/M VOLTS V, where XYZ represents the capacitance (calculated as XY×10Z pF), the letters J, K or M indicate the tolerance (±5%, ±10% and ±20% respectively) and VOLTS V represents the working voltage.

Polarised capacitors, for which one electrode must always be positive relative to the other, have clear polarity markings, usually a stripe or a "-" sign on the side of the negative electrode. Also, the negative lead is usually shorter.

Suntan Technology Company Limited
----All Kinds of Capacitors

(1)Because the solid tantalum capacitor is of polar type, do not apply a reverse voltage to it.

(2)The figure on the below shows the relationship between current and reverse voltage.

Suntan Technology Company Limited
---All Kinds of Capacitors

Effect of Frequency: Frequency affects both capacitance and dissipation factor..

The variation of impedance with frequency is an important consideration in the application of multilayer ceramic capacitors. Total impedance of the capacitor is the vector of the capacitive reactance, the inductive reactance, and the ESR. As frequency increases, the capacitive reactance decreases. However, the series inductance (L)  produces inductive reactance, which increases with frequency. At some frequency, the impedance ceases to be capacitive and becomes inductive. This point, at the bottom of the V-shaped impedance versus frequency curves, is the self-resonant frequency. At the self-resonant frequency, the reactance is zero, and the impedance consists of the ESR only.

Suntan Technology Company Limited
---All Kinds of Capacitors

Of much less concern, yet still important, especially in audio applications, is the micro phonic or piezoelectric effect. Barium titinate which is the base ceramic material for most dielectric systems will exhibit microphonic effects. It is not very difficult to take a Y5V capacitor and put a DC bias with a small signal 1kHz sine wave and get the capacitor to “sing”. Tantalum capacitors exhibit no microphonic effects. The experiment done by AVX involved the opposite phenomena whereby the part was shaken while under bias and the resulting generated voltage was measured. This was done for a series of 1µF devices and the results are shown in Fig below.

Suntan Technology Company Limited
---All Kinds of Capacitors

Suntan lead the unique and latest technology in manufacturing ceramic trimmer. We specialized in producing ceramic trimmer capacitors with 3mm-SMD Ceramic Trimmer Capacitor, 3mm-Special SMD Ceramic Trimmer Capacitor, 5mm Trimmer Ceramic Capacitor, 6mm and 7mm Ceramic Trimmer Capacitor etc. Following is the applications of a Ceramic Trimmer Capavcitor

Consumer Electronic Equipment
Audio & Visual Equipment -- Home VTR/VCR, VTR Camera, Television set, Video-disk Player, Digital Equipment, Radio Cassette Recorder, Hi-Fi Audio Equipment, Car Audio Equipment, Broadcast Equipment, CATV.

Industrial Electronic Equipment
Tele-communication Equipment -- Facsimile, Key Phone, Electronic telephone, electronic exchanger.
Radio Communication Equipment -- Automobile Telephone, Pocket Pager, Personal Radio.
CPU & Peripherals -- FDD, Computer, Printer, CRT Display.
Office equipment -- Word Processor.
Testing & Measuring Instruments -- Electronic Measuring Instruments, Industrial Measuring Equipment, Medical Electronics Equipment.
Factory Automation Equipment -- Numerical Control Machine, Industrial Robotics, Automatic Equipment, Ultrasonic Equipment, Components for High-frequency Circuit.

Home Appliances / Home Security Devices
Others -- Toys and Electronics Games.

Suntan Technology Company Limited
----All Kinds of Capacitors

Suntan the best sell Polypropylene Film Capacitor is Metallized Polypropylene Film Capacitor - X2 - TS08S. For TS08S Capacitor, It Provides interference suppression with CE & TUV and UL safety approvals. And TS08S also have High dv/ dt capabilities.TS08S Capacitor is widely used in the electrical Industry. Suntan St mark TS08S Capacitor is popular in the oversea market.

Polypropylene Film Capacitor is used in such devices as pulse-handle circuits, stable oscillators and sample-and-hold circuits. Due to a balanced profile of a higher dielectric strength than polycarbonate, strong insulation and low moisture absorption, this film capacitor is one of the most frequently used. This capacitor can also be combined with foil, metalized film or others, depending on the need. Self-healing is also available in this capacitor. If an over-voltage occurs, however, polypropylene has a tendency to be damaged.