Rotary potentiometer is an adjustable electrical resistor that can be moved by means of a rotary motion.

This allows control processes to be implemented in various electrical or electronic systems, for example for volume control in multimedia devices.

Kingtronics offers RKT 3540S & 3590S with high quality and certification of ISO 9001.

Features and its advantages:
-Bushing mount precision potentiometer

-"Metal" shaft and bushing
Ideal as a bearing material
Improve efficiency, reduce vibration and noise, special anti-bite characteristics.

-"Wire wound" potentiometer
High power, better durability

-Multiturn potentiometer

Kingtronics-Characteristics of Kingtronics Trimming Potentiometer RKT 3540S & 3590S

Trimming Potentiometers can be used by various products. Its application includes satellite receivers, LCD displays, set-top boxes, and some entertainment devices, such as cameras.

Kingtronics offers many types of trimming potentiometers, like SMD Trimming Potentiometers, Rectangular Trimming Potentiometers, Wire wound Trimming Potentiometers, and Phenolic Trimming Potentiometers, etc.

Here are some our popular types for your reference:
1. SMD trimming potentiometers: RKT-C3305
2.Rectangular trimming potentiometers: RKT-3006, RKT-3362
3. Phenolic trimming potentiometers: RKT-065
4.9 mm Square Trimming potentiometer: RKT-3296, RKT-3386

For more products, please visit
MOQ is low, and we can support very good price and L/T! Welcome send inquiry to, or contact our sales.

Kingtronics Strong Support on RKT-Trimming Potentiometer

Aluminum Electrolytic Capacitors have always been the sales champion in Kingtronics. As you know, Kingtronics has business partners around the world,  the quality of Kingtronics is no need to worry. And now I introduce GKT-GF Radial Lead type E Cap to you, it is particularly suitable for LED lights.

Features of GKT-GF Radial Through-hole E Cap:
Long load life: 5000H
Especially designed for LED, electronics energy, saving lamps, Electronic ballast
Various dimensions: 10*16mm ~ 22*31mm

Specification of GKT-GF Radial or single-ended Aluminum Electrolytic Capacitors:
Operating Temperature: -40℃ ~ +105℃
Rated Voltage: 200Vdc,250Vdc,350Vdc,400Vdc
Capacitance: 10uF ~ 150uF

Don’t hesitate, you can always find what you need in Kingtronics, hurry to contact with us!

Do you need our GKT-VN SMD Aluminum Electrolytic Capacitors? All of our products are RoHS compliant and Reach standard. Kingtronics is always your best choice, we also warmly welcome old and new clients to come for business discussions. GKT-VN SMD Aluminum Electrolytic Capacitors is Bi-polar type.

Features of GKT-VN SMD E Cap
CN code printed on the Aluminum Electrolytic Capacitors Surface
Designed for surface mounting on high density circuit board
Reach/RoHS certified quality
Various dimensions: 4*5.4mm ~ 6.3*7.7mm
Bi-polar with general temperature +85℃

Specifications of GKT-VN SMD E Cap
Operating Temperature: -40℃ ~ +85℃
Wide Range Capacitance: 0.1uF ~ 100uF
Voltage Range: 6.3V ~ 50V.DC
Long load life: 1000 hours

Please click the below connection to check more Kingtronics SMD E cap information of it:

Summer holiday is on the way. A wonderful vacation will be started, at the same time do you save for a rainy day to make order plan? Progress is the activity of today and the assurance of tomorrow. Please send us your rough order list without hesitation. Our professional sales will assist you with your tasks efficiently. 

Below we list our most popular series. You can feel free to contact with us for any component demands. We serve you with our sincerity and thoughtfulness. 

Aluminum Elec. Capacitors   
MLCC & Tantalum Capacitors
Bridge Rectifiers
Diodes & Transistors
Trimming Potentiometers

Kingtronics is potentiometers manufacturer since 1990. Trimming potentiometers are Kingtronics' first products. On Kingtronics' trimming potentiometers body, we mark "Kt" due to insufficient space. Actually our registered brand in Hong Kong is “Kingtronics and Kt”.

Now, Kingtronics upgrades trimming potentiometers packaging box . There are 3 sizes of different packing box, which can be used for all types of trimming potentiometers .We choose blue as the color of Kingtronics. Our website, catalog, poster, envelope, company logo and all other things related to Kingtronics, we choose blue. Blue stands for our Kingtronics people spirit --- Innovation, efficiency and foucs

Compared with out previous one , we list all the strong products of trimming potentiometers on the box. Our brand name and contact way are also printed on it. Therefore, whether you are interested in other products of potentiometers, or have any inquiry, you can contact us rapidly.

Below link provides more information about trimming potentiometers, hoping it is helpful to you.

Brief Description:
Trimmer 3386, 3/8" Square Single Turn Cermet Trimming potentiometer, 3386B, 3386C, 3386H, 3386J, 3386W, 3386S, 3386X, Kingtronics.

Detailed Description:
Standard Resistance Range 10Ω - 5MΩ
Resistance Tolerance ±5%, ±10%
Absolute Minimum Resistance ≤1% R or 2Ω
Contact Resistance Variation CRV≤3%
Insulation Resistance R1≥1GΩ(100Vac)
Withstand Voltage 600Vac
Effective Travel 300°
Standard Packaging 50pcs, per tube

RoHS compliant
20 years manufacturer, with good quality and attractive price
Kingtronics own brand “KINGTRONICS”

Kingtronics other trimming potentiometer:
3296 3006 3266 3362 3323 3329 3309 3590 3540 065 063 C3305 

Example1: Flicker adjustment for LCD (Liquid - crystal display)
To adjust the reference voltage (VCOM) of LCD.
With inappropriate reference voltage, there will be flicker on LCD screen.
Use trimmer Potentiometers to adjust reference voltage for flicker restraining.

LCD has some flickers if the voltage is not suitable for LCD.

You can reduce the flickers when you adjust the voltage by using trimmer potentiometer.

Example2: Gain adjustment for Blu-ray, DVD, CD disc reading optical pick - up.

As record media Blu-ray, DVD and CD etc. usually be used, and we use optical pick - up for the data 
reading and writing from disc. In an optical pick - up, there is a light - sensitive element to detect reflected 
light from disc.And a trimmer potentiometer is used to adjust the sensitivity of this light - sensitive element.

Circuit example Playback system device (ex, DVD, CD, playback)

Example3: Sensitivity adjustment for sensor products.

There are all kinds of sensors around our life.

  • Lights turn on automatically when human be detected.
  • Smoke detector for fire preventing.
  • Parking assist system for distance from car to wall.
  • Product detection sensor in factory.

 For these sensors, trimmer Potentiometers are used for suitable sensitivity.

From Oct 13 to 16th, 2012, we Kingtronics exhibited at 2012 Hong Kong Electronics fair. Booth No. is  5G-D12. During the three days, we promoted our products actively and gained full success.
Here I list some samples which are very popular among visitors and share you some nice exhibition photos.



RKT--Trimming potentiometer                    Quantity 
3296W-103                                                  200
3296W-102                                                  200
3006P-103                                                   200
3266W-502                                                  200
3266W-103                                                  200
3386P-103                                                   400

Diode and Bridge Rectifiers                     Quantity 
Diode M7 SMA T&R RoHS                            600
Diode LL4148 LL-34T&RRoHS                     500
S1M SMA T&R RoHS                                    300
BZV55C15 LL-34 T&R RoHS                        300
DB107S  DBS TUBE RoHS                            100
MB10S  MBS T&R RoHS                                100 
MKT--radial multilayer ceramic capacitor                Quantity 
0.047uF  50V +/-10% X7R p: 5.08mm Bulk RoHS      200
TKT--dipped tantalum capacitor                         Quantity 
4.7uF 16V +/-20% bulk 2.54mm Bulk RoHS           200 

If you have related order/inquiry on hand, pls dont hesitate to contact me via I will reply you soon. Thanks in advance.

A trimmer  is a miniature adjustable electrical component. It is meant to be set correctly when installed in some device, and never seen or adjusted by the device's user.
Trimmers can be variable resistors (potentiometers), variable capacitors, trimmable inductors. They are common in precision circuitry components, and may need to be adjusted when the equipment is serviced.
Trimmers are mounted directly on circuit boards, are usually found in superhet radio and television receivers, in the Intermediate frequency, oscillator and RF circuits.
In one words, trimmers are in wide used in our daily life, so the demand of trimmer is huge in the market!

Kingtronics is a manufacturer of Trimming potentiometer since 1990, we are one of the oldest factory for trimming potentiometer.
All products are RoHS compliant under our own brand "kingtronics" with registered trade mark "Kt" on the body.

We produce all parts with mature technology, quality is very good with ISO & SGS certifications available, and price is quite competitive in the market!

Please visit our website, you will find more excellent parts!

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



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