Dear Valued Customer,

We would like to take a monent to let you know that our market dep specially design and makes a official Wood-framed certificate of distributorship, fyi below picture. Do you like it? 

It's our honour  to offer you this Wood-framed certificate once steady business cooperation over 2-3 years.

Sincerely hoping we can send it to you with your next new shipment together.^_^

Any further questions about the Wood-framed certificate,pls feel free to come to your contacted sales.

Thanks a lot for your kindly attention.

Kingtronics team wish both of us have a bright future.

Surge arresters operate on the gas-physical principle of the highly effective arc discharge. Electrically, surge arresters act as voltage-dependent switches. As soon as the voltage applied to the arrester exceeds the spark-over voltage, an arc is formed in the hermetically sealed discharge region within nanoseconds. The high surge current handling capability and the arc voltage, which is almost independent of the current, short-circuit the overvoltage. When the discharge has died down, the arrester extinguishes and the internal resistance immediately returns to values of several 100 MΩ.

The surge arrester thus meets almost perfectly all requirements made on a protective element. It reliably limits the overvoltage to permissible values, and under normal operating conditions the high insulation resistance and the low capacitance contribute to the fact that an arrester has virtually no impact on the system to be protected.

Dear Friends,

Did you ask for our souvenir multi tool knife? Are you impressed by this practical souvenir?

However, I have to tell you that the multi tool knives will not available any more.

Don't worry! We will find something else which is interesting or useful to take the place of it. We will let you know when we are ready to offer you.

Let's look forward to the new souvenir!

Kingtronics Sales Team

In the past several years, Kingtronics always donate a small part of funds to some schooling children at Guilin province.

All the funds are collected from each of Kingtronics team members, though we can not help them change their life dramatically, we keep a faith in our mind that to help them at much as we can.

Our tiny mercy actions proved an old saying "Unscrupulous non-hero, true hero does not change his mind ".

Kingtronics welcome you to join our Angel Charity Social Activity in 2016 Autumn.

Please email to us at

Dear valued customers, one more line was set smoothly, Aluminum Electrolytic Capacitor can be supported from now on, please positively send our sales rfqs, we are always delighted to endeavor more for you.

Description: long life, low impedance, excellent performance options, operating temperatures up to 150°C

Application: automotive power, industrial LED lighting, telecom infrastructure...

Specification: capacitance , capacitance tolerance, voltage, dimension, pitch, lead length, package

Details as below:

Aluminum Electrolytic Capacitors - Radial Type

Kingtronics P/N

Life Hours







Super Miniaturized

↓ Download PDF




High Temperature

↓ Download PDF




Low Impedance

↓ Download PDF




Long Life

↓ Download PDF

Aluminum Electrolytic Capacitors - Snap-in Type

Kingtronics P/N

Life Hours







High ripple current

↓ Download PDF




High ripple current

↓ Download PDF

Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set

C. Physical and environmental conditions

D. Stability of setting required

E. Circuit packaging requirements

D. Stability of Setting
It is highly desirable that once the trimmer has been set, it should remain at that setting independent of time, operating temperature changes, vibration, shock and humidity. This property of stability is largely a factor of the compatibility of the materials at the moving contact interface and the thermal matching of the elements of the trimmer structure. BI uses noble metals in both the wire brush contact and the cermet element. These materials are relatively soft, highly compatible and provide an excellent, low resistance, non-corroding interface. The contact drive structure and materials are chosen for their stability and compatibility. The high contact forces utilized at the brush/element interface reduce susceptibility to shock and vibration.

The circuit designer can contribute significantly to short term operating and long term stability by mounting the trimmer away from high thermal gradients, hot spots and sources of excessive vibration.

E. Circuit Packaging
BI manufactures trimmers in a variety of package styles and sizes. The chances are excellent that stock models are locally available that will fit your requirements. Models include both pin style and surface mount single and multiturn configurations. Special electrical and mechanical features are available for specific customer applications. Call your local representative or the factory direct for information on special packaging.

Dear All,

Now we are nearly selling out our rest 2kkpcs LL4148 stock.

We have the lowest price with excellent quality, so we sold out a lot soon. Pls don't miss the chance of our last 700kpcs LL4148 stock. Send us your request now.

Our Stock Notification:
LL4148 LL-34 T&R RoHS SPQ:2.5kpcs/reel  only 700kpcs stock available now.

Looking forward to hear from you soon.

Thanks a lot in advance.

Kingtronics sales team

Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set

C. Physical and environmental conditions

D. Stability of setting required

E. Circuit packaging requirements

C. Physical and Environmental Issues

1. Physical considerations in trimmer selection
• Case style desired
• Top or side adjust
• Pin style required
• Mechanical support required
• Board height requirements

2. Assembly process considerations
BI offers a variety of trimmer models that are sealed to help protect against moisture and board washing processes.
•Open vs. Sealed
• Max time/temperature exposure 

3. Environmental operating considerations
• Operating temperature range
• Resistance temperature coefficient
• Vibration and shock tolerance 

4. Human operating conditions When you complete your design, be careful to consider the tortures that clever human beings with a screwdriver in hand can impose on trimmers. For example, while a trimmer configuration mounted on edge might be a board space saver, a trimmer that mounts flat on the board may be more resistant to abuse by a heavy handed technician making adjustments through a hole in the chassis.

Kingtronics is growing increasingly better in these years. We provided our customers with new products, special offer, good service.

Recently, our colleagues in Taiwan office have started working since 1st March, 2016. The Kingtronics sales team has been enriched to help our customers. 

Hoping both Kingronics and our customers can grow together to achieve a wonderful future.

Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set

C. Physical and environmental conditions

D. Stability of setting required

E. Circuit packaging requirements

B. Setability and Time to Set
The enemies of setability are poor resolution, mechanical backlash and high CRV. BI has addressed these problems in the design of trimmer models. BI’s smooth cermet materials, precious metal split brush contacts and teflon rotors work together to provide outstanding setability.

“Time to set” tests show the following:

Setting Attributes

Single Turn


High accuracy



Fastest to high accuracy



Fastest to approximate setting



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
Chip EXPO 2017
Chip EXPO 2017
"Expocentre" Moscow Russia
Date: Oct 31 - Nov 2nd, 2017
Booth No.: B 20

Meet Kingtronics in Munich soon
Electronica 2018
Electronica 2018
New Munich Trade Fair Centre, Germany
Date: 13-16 November, 2018
Booth No.: To be advised


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