Telecommunications installations as well as CATV amplifiers, CB transmitters, home entertainment systems, computers and similar equipment can be exposed to voltage surges conducted via the power network. The combination of a surge arrester and a varistor offers proven protection in these cases. The phase and neutral conductors are connected to ground potential of both protection elements.

Surge arresters are an essential aid to insulation coordination in electrical power supply systems. Valuable equipment can be protected against lightning- and switching overvoltages.

If basic rules are kept, modern Metal oxide surge arresters offer complete protection against overvoltages.

Costs of surge arresters in electrical power supply systems are less than 1% of the worth of the equipment they protect.

High availability and low costs of surge arresters facilitate new applications like surge arresters for transmission lines. As a result surge arresters convince with a quality improvement of electrical power supply systems.

Tantalum capacitors are used in smaller electronic devices, including portable telephones, pagers, personal computers (PCs), and automotive electronics. They differ in terms of form factor, technology, and capacitance type. Leaded tantalum capacitors have leads for connections to circuits. Surface mount or chip tantalum capacitors do not. For both types of products, technology choices include single layer, multilayer, and wound. Single layer tantalum capacitors use a monolithic dielectric. Multilayer products are small in size and made of many layers. They provide good frequency characteristics as well as excellent temperature stability. Wound tantalum capacitors are built by winding foils, sometimes by hand. In terms of capacitance type, there are two choices: fixed and variable. Fixed tantalum capacitors have a nonadjustable capacitance value. Variable tantalum capacitors can be set with a potentiometer or other adjustment mechanism.

Selecting tantalum capacitors requires an analysis of performance specifications such as capacitance range, capacitance tolerance, DC rated voltage range (WVDC), equivalent series resistance (ESR), leakage current, dissipation factor and operating temperature. Capacitance measures the ability to store energy, given as C = K A/D, where A is the area of the electrodes, D is their separation, and K is a function of the dielectric between the electrodes. Normally, capacitance tolerance is measured as a percentage of capacitance. DC rated voltage range (WVDC) is the maximum continuous DC voltage that may be continuously applied to a tantalum capacitor at any temperature between the lower category temperature and the rated temperature. Equivalent series resistance (ESR) represents the extent to which tantalum capacitors act like resistors when charging and discharging. Dissipation factor (DF) is the ratio between the resistive and the reactive part of the impedance submitted to a sinusoidal voltage of specified frequency.

There are three main packaging specifications for tantalum capacitors: lead or termination type, mounting style, and packing method. Choices for lead type include surface mount technology (SMT), axial, radial, flying, tab, screw, gull wing, and J-leads. Mounting styles include SMT as well as through-hole technology (THT), bolt mounts, bracket mounts, and pole mounts. There are three main packing methods for tantalum capacitors: tape reel, tray or rail, and shipping tube or stick magazine. Polarized, non-polarized, and self-healing products are also commonly available.

With 20 years experience, we Kingtronics produce and sell excellent dipped tantalum capacitor.
We manufacture our products under our own registered brand--Kingtronics brand.

Kingtronics dipped tantalum capacitor lead time improve a lot at this moment.
We can offer you Good quality, Good price and Good Lead Time!

Our dipped (radial) tantalum capacitors cross to: AVX--TAP; NIC-- NDTM; Kemet--T350 to T390; NEMCO--TB PDT; China--CA42; Mallory--TDC TDL...
Here pls get our datasheet:

Ceramic capacitors are known to comprise alternating layers of inner electrodes and ceramic dielectrics. A laminated ceramic capacitor includes a laminate formed of a plurality of laminated dielectric ceramic layers and an internal electrode laminated therein. Monolithic ceramic capacitors have a rectangular shape, and are provided with external electrodes at the opposite ends thereof, respectively. The development of integrated circuits has made it possible to place many circuit elements in a single semiconductor chip. A multilayer ceramic capacitor has been used widely as a compact, high power, and highly reliable electronic part and employed in a large number of electronic circuits. The multilayer ceramic capacitor comprises a layered dielectric body composed by alternately laminating dielectric layers and inner electrode layers and terminal electrodes formed on the main body of the layered dielectric element. The ceramic layers are stacked together in a manner that the internal electrodes are alternately exposed at opposite sides of the laminated body. The external electrodes are disposed at the end portions including the opposite sides of the laminated body and are connected to respective sets of internal electrodes of the laminated body.

Kingtronics manufacture a wide range of quartz crystals. We also stock crystals in most popular package styles, frequencies and specifications for quick delivery.

Kingtronics offers high quality SMD crystals at incredibly aggressive prices. The HC49SMD series is an industry standard crystal package. This is a low cost, low profile timing option for applications where cost is critical.

The HC49SMD is available in tight tolerances and stabilities for demanding applications. With a broad frequency range from 3.200MHz to 90.000 MHz, the HC49SMD can serve as a low cost solution in virtually any application or market. The HC49SD is available in surface mount (SMD) packaging only.

Bridge Rectifier Series:

A bridge rectifier makes use of four diodes in a bridge arrangement to achieve full-wave rectification.

This is a widely used configuration, both with individual diodes wired as shown and with single component bridges where the diode bridge is wired internally.

For cermet trimming potentiometers, we offer competitive price, very speedy delivery ( mostly on stock), and very high quality. Do you want to try our price? Pls check our website: and send inquiry. thanks.

The surge arrester is shown in Figure 7. It is built-up of 6 separate mechanical and electrical modules connected in series. The design of each module includes an HTV silicone rubber insulator moulded directly onto the internal structure with the  ZnO block column. The internal cage-style mechanical structure provides high mechanical strength and well controlled short-circuit capability in the event of arrester overloading.

The special location of the  arrester in the tower has required extensive 3D electrical field calculations to determine necessary grading rings to control the voltage distribution along the  arrester. The mass of the  arrester including the grading rings is 128 kg or approximately one third of the mass of an equivalent  arrester with porcelain housing. The creep age distance of 27 mm/kV corresponds to IEC class III.

Tantalum capacitors are under some conditions prone to self-destruction by thermal runaway. The capacitor typically consists of a sintered tantalum sponge acting as the anode, a manganese dioxide cathode, and a dielectric layer of tantalum pentoxide created on the tantalum sponge surface by anodizing. The tantalum oxide layer may have weak spots that undergo dielectric breakdown during a voltage spike. The tantalum then comes to direct contact with manganese dioxide and the leakage current causes a local heating; a chemical reaction then produces manganese(III) oxide and regenerates (self-heals) the tantalum oxide layer.

Contact us

Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
Skype: kingtronics.sales


Kingtronics International Company was established in 1995 located in Dongguan City of China to handle all sales & marketing for factories located in Chengdu, Sichuan and Zhaoqing, Guangdong, China. In 1990, we established the first factory to produce trimming potentiometer and in 1999 we built up new factory in Zhao Qing, Guangdong. Now with around 850 workers, Kingtronics produce trimming potentiometers, dipped tantalum capacitors, multilayer ceramic capacitors, and diode & bridge rectifier. We sell good quality under our brand Kingtronics, and Kt, King, Kingtronics are our three trademarks. All our products are RoHS compliant, and our bridge rectifier have UL approval. Please visit our Products page, you could please download all our PDF datasheet and find cross reference for our Trimming Potentiometer and capacitors.

Tantalum and Ceramic Capacitors Cross Reference ↓ Download
Diodes & Rectifiers List(PDF: 97KB) ↓ Download
Trimming Potentiometer Cross Reference ↓Download

Meet Kingtronics in Moscow soon
Convention and Exhibition Centre,HongKong
Date: 13-16 October, 2019
Booth No.: 5G-C26

Meet Kingtronics in Munich soon
New Munich Trade Fair Centre, Germany
Date: 10-13 November, 2020
Booth No.: To be advised



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