#Passive Components #Capacitors #Poly - MKT - Mono - X2 Capacitors #Class X2 Capacitors Mains Suppression

Our advantages speak for themselves:
✅ Certification from VDE, ENEC, and UL institutions
✅ Guarantee compliance with strict safety regulations
✅ High reliability, high stability
✅ Used in across the line, inference suppression circuit
✅ Well-established capacitors manufacturer with great reputation since 1990

Contact us today for best offer: info@kingtronics.com  Skype: kingtronics.sales2

Kingtronics Film Capacitors Factory Tour: https://youtu.be/OsgdDKBHLnk?si=PDXOR-_g8FtYTv30

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VDE, ENEC & UL approved FKT-MX X2 Metallized Polypropylene Film Capacitor

Growing in the southern region of China, the sudden drop in temperature, maybe you think it is amazing. People could still wear T-shirts and shorts last month. This week, cold air hit and dropped by 10℃-20℃ overnight.

Last month, we had a warm activity in Guangxi Province, where we shared some clothes, shoes and blankets for children in mountainous areas. Now they can wear them all, and also can cover the blankets. We hope that students in schools will be warmer this winter.

Recently, we have received many letters from these students, some students express gratitude, while others tell us their needs. Kingtronics will do our best to meet the needs of students and provide them with a happy, healthy, and joyful childhood

Kingtronics Angle Charity Social Activity in 2023 Autumn

The use principle of Varistor is that after it is connected to the protected equipment, it cannot affect the normal operation of the equipment, and can effectively implement instantaneous overvoltage protection for the equipment. Therefore, in addition to the technical parameters of Varistor, the following issues should be considered in the actual selection:

(1) Selection of voltage sensitivity
Considering the deviation between the actual Varistor voltage and the nominal voltage (1.1~1.2 times of the nominal voltage should be considered), the possible fluctuation range of the power supply voltage in the AC circuit (1.4~1.5 times of the rated voltage should be considered), and the relationship between the peak value of the AC voltage and the effective value (1.4 times should be considered), the Varistor with a voltage sensitive of 2.2~2.5 times of the rated voltage should be selected. In DC circuits, Varistor with a voltage sensitive of 1.8~2 times the rated value of DC voltage are often selected.

⑵ Selection of flow capacity
In principle, the selection should be based on the maximum transient surge current that may be experienced, but achieving this is difficult. In practice, the selection of Varistor is based on the use occasion or the test grade specified in the product test standard.

According to the former, 1kA (8/20 μ S current wave) can be used for the protection of silicon controlled rectifier; 3kA is used for surge absorption in electrical equipment; 5kA is used for overvoltage absorption of lightning strikes and electronic equipment; 10kA is used for protection against lightning strikes. According to the latter, the commonly used composite wave (1.2/50 generated when the generator is open circuit output) μ Voltage wave of s; 8/20 generated during short-circuit output μ Current wave of s; The internal resistance of the generator is 2 Ω to assess the equipment's ability to withstand lightning surge interference online. During the 4kV test, the maximum current absorbed by the protector can reach 2kA; For the 6kV test, the maximum absorbed current is 3kA. However, in actual selection, the flow capacity of the selected Varistor should also be appropriately increased. Because Varistor with large current passing capacity should have relatively small residual voltage drop when absorbing surge current of the same size; At the same time, there is also a large protection margin for the selected Varistor.

⑶ Inherent parasitic capacitance
Varistor has an inherent capacitance problem. Its value ranges from hundreds to thousands of pF according to the difference of external dimensions and nominal voltage. The inherent capacitance of Varistor determines that it is not suitable for use in high-frequency occasions, or it will affect the normal operation of the system; Suitable for use in power frequency systems, such as for protection of power incoming lines, protection of thyristor rectifiers, etc.

The instantaneous power of Varistor is relatively large, but the average continuous power is very small, so it cannot work in the conduction state for a long time.https://www.kingtronics.com/Metal-Oxide-Varistor/XKT-Metal-Oxide-Varistor.html 

Kingtronics Kt 05D to 20D Metal Oxide Varistor Features
Operating Temperature Range: -40℃~+105℃
Body Diameters Range From 5D to 20D
Wide Operating Voltage from 18V to 1800V
Full compliance with RoHS and REACH

Kingtronics Kt 05D to 20D Metal Oxide Varistor Applications
Industrial equipment
Home appliance
Industrial equipment
Lighting products
Telecommunication or telephone system

Kingtronics Precautions for use of Metal Oxide Varistors

Kingtronics conductive Polymer Aluminum Solid Electrolytic Capacitors, below is our standard product list of Polymer E-cap, welcome share with us your spec request, let us do best to find the product that best meets your specification needs.

Please don’t hesitate to contact us for more information.
Email: info@kingtronics.com

kingtronics Polymer Aluminum Solid Electrolytic Capacitors product video: https://www.youtube.com/watch?v=ZqoFxsA1rf8&list=UUr_Oi3-4vXEHq8INdSANldQ&index=13

**Comply with the RoHS directive.
GKT-AS Radial type 105°C
Rated Voltage  2.5V~ 25V, Standard Low ESR

GKT-AR Radial type 105°C
Rated Voltage  2.5V~ 25V, Super Low ESR

GKT-AU Radial type 125°C
Rated Voltage  35V~ 160V, High Ripple Current

GKT-AX Radial type 125°C
Rated Voltage  2.5V~ 25V, High Temperature

GKT-AP SMD type 105°C
Rated Voltage  2.5V~ 100V, Low ESR

low ESR, low impedance, and large permissible ripple current.
stable temperature
excellent performance in terms of blog absorption, smoothness, and transient response.

automotive power, communication power supply,
industrial LED lighting, LCD Monitors
telecom infrastructure.
DC/DC converters and AC/DC converters,
router, TV, voltage regulator,
mobile phone adapter (mobile phone charger), computer motherboard, CPU’s
graphics card

Characteristics & Applications of Kingtronics Polymer Aluminum Solid Electrolytic Capacitors

Kingtronics produce and sell a wide variety of Polymer Aluminum Solid E-cap with Chip SMD type and Radial Lead type.

From the industry trend, we can see the market is also witnessing the development of advanced capacitors, such as polymer capacitors, which offer better performance and longer lifetimes.

-automotive power; industrial LED lighting; telecom infrastructure

If you have any specification requirement please kindly send to us for cross check
Welcome to share your new inquiry with us.
Contact us today for best price quotation---
Email: info@kingtronics.com

Polymer Aluminum Solid Electrolytic Capacitors

Kingtronics P/N





Standard Low ESR



Super Low ESR



High Ripple Current



High Temperature




Kingtronics Polymer Aluminum E-cap Series



Part number

Potentiometer Pin    10k


RKT-3362P-103-R 100ppm

Potentiometer Pin    10k


RKT-3362U-103-R 100ppm

More values we can produce:
RKT-3006 3/4" (19 mm) Rectangular Trimming Potentiometer
RKT-3266 1/4" (6 mm) Square Trimming Potentiometer
RKT-3296 3/8" (9 mm) Square Trimming Potentiometer
RKT-3323 1/4" (6 mm) Square Trimming Potentiometer
RKT-3329 1/4" (6 mm) Round Trimming Potentiometer
RKT-3362 1/4" (6 mm) Square Trimming Potentiometer
RKT-3386 3/8" (9 mm) Square Trimming Potentiometer
RKT-3309 9 mm Through-Hole Cermet Consumer Trimming Potentiometer
RKT-3540S Precision Potentiometer (Multiturn)
RKT-3590 Precision Potentiometer (Multiturn)
RKT-C3305 Trimming Potentiometer-3mm SMD
RKT-065 Phenolic Consumer Trimming Potentiometer

Kingtronics Trimmer potentiometer Cross Guide
Kingtronics B.I.(Beckman) Bourns Murata Vishay
RKT-3362P 25P 3362P PVC6A CT-6P/ FT-6P/T73YP/76P
RKT-3329P 62M,82M 3329P PV32P RJ-6P/T7YA/75P
RKT-3329H 82P 3329H PV32H RJ-6W/T7YB/T7YB/75H
RKT-3006P 89P 3006P PV23P CT-20P/T18/43P
RKT-3386P 72P 3386P PV34P T20YP/63P
RKT-3296W 67W 3296W PV36W CT-94W/CT-9W/T93YA/64W
RKT-3296X 67X 3296X PV36X CT-94X/CT-9X/T93XA/64X

There are many factors that need to be considered when selecting capacitors. The following discusses the capacitor selection elements of MLCC.

MLCC selection: Just meeting the parameters is not enough.
The general decision-making logic for purchasing a product is: whether it can be used, whether it is easy to use, whether it is durable, and the price. In fact, this logic can also be applied to the selection process of MLCC: firstly, the MLCC parameters must meet the circuit requirements, and secondly, whether the parameters and media can make the system work in the optimal state; Besides, is there any defective product in the incoming MLCC and how reliable is it; Finally, is there an advantage in price and is the supplier's cooperation timely. Many design engineers do not attach importance to passive components, thinking that only theoretical calculation of parameters is sufficient. In fact, the selection of MLCC is a complex process, and it is not simply satisfying the parameters.

Selection Elements
-Parameters: capacitance value, tolerance, withstand voltage, operating temperature, size
-DC bias effect
-Price and Supply

The performance of different media determines the different applications of MLCC
-C0G capacitors have high temperature compensation characteristics and are suitable for use as bypass capacitors and coupling capacitors
-The X7R capacitor is a temperature stable ceramic capacitor, suitable for industrial applications with low requirements
-The Z5U capacitor is characterized by its small size and low cost, making it particularly suitable for application in decoupling circuits
-Y5V capacitor has the worst temperature characteristic, but its capacity is large, which can replace the low capacitance Aluminum electrolytic capacitor

MLCC commonly uses different media specifications such as C0G (NP0), X7R, Z5U, Y5V, etc. Different specifications have different characteristics and applications. The main difference between C0G, X7R, Z5U, and Y5V is their different filling media. Under the same volume, the capacity of capacitors composed of different filling media varies, resulting in different dielectric losses and capacity stability. Therefore, when using capacitors, different capacitors should be selected based on their different functions in the circuit.

Kingtronics Introduce Selection for MLCC

The Characteristic of FKT-MC Metallized Polyester Film Capacitor
1.High reliable with its Self-Healing performance.
2.Coated with epoxy resin for superior heat resistance, humidity resistance and solvent resistance.
3.Good reputation in use with filtering, DC blocking coupling and general communication equipment.

Operating Temperature:-40℃ TO + 85℃
Rated Voltage:DC 100V, 250V, 400V, 630V
Capacitance Range:0.01 TO 6.8µF
Capacitance Tolerance:±5%, ±10%, ±20%
Dissipation Factor:≤0.01 (AT 1KHZ)
FKT-MC :https://www.kingtronics.com/pdf/FKT-MC.pdf  

The Characteristic of FKT-MH High Voltage Box Type Metallized Polypropylene Film Capacitor:
1.Metallized structure, widely used in high voltage, high frequency and pulse circuit
2.Low loss and small inherent temperature rise
3.Negative temperature coefficient of capacitance
4.Excellent active and passive flame resistant abilities

Rated Temperature: 85℃ for VR (DC);75℃ for VR (AC)
Operating Temperature Range: -40℃~+105℃ (+85℃ to +105℃ decreasing factor 1.25% per ℃ for VR DC)
Rated Voltage: 1000V, 1400/1600V, 2000V
Capacitance Range: 0.00022µF ~ 0.22µF
Capacitance Tolerance: ±2%(G), ±3%(E), ±5%(J), ±10%(K),±20%(M)
Dissipation Factor: ≤0.001, (20℃,1kHz)
FKT-MH: https://www.kingtronics.com/pdf/FKT-MH.pdf

Kingtronics FKT-MH High Voltage Box Type Metallized Polypropylene Film Capacitor

The Characteristic of FKT-MF  Box Type Metallized Polyester Film Capacitor:
1.High reliability at high current stress.
2.Self-healing properties.
3.Flame retardant plastic case and epoxy resin.
4.Low losses, high dv / dt capability.
5.High moisture resistance.
6.High stability of capacitance and long life

Operating Temperature:-40℃ TO + 85℃
Rated Voltage:250, 400, 630VDC
Capacitance Range:0.0047 TO 3.9µF
Capacitance Tolerance:±5%, ±10%

Insulation Resistance:
C≦0.33uF ; IR≥50000MOhm
C>0.33µF ; IR≥15000MOhm
Dissipation Factor:0.1% max. at 1KHz, 20℃
Dielectric Strength:160% of rated voltage for 60s
FKT-MF: https://www.kingtronics.com/pdf/FKT-MF.pdf

Kingtronics FKT-MF Box Type Metallized Polypropylene Film Capacitor

Contact us

Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
E-mail: info@kingtronics.com
Skype: kingtronics.sales
MSN: kingtronics-sales@hotmail.com
Web: www.Kingtronics.com
YouTube: www.youtube.com/c/Kingtronicskt


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



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