A. Because the capacity of electrolytic capacitors is much larger than that of general fixed capacitors, the appropriate range should be selected for different capacities when measuring. In general, the capacitance between 1 ~ 47μF can be measured by R × 1k, and larger than 47μF can be measured by R × 100.
A、因為電解電容的容量較一般固定電容大得多,所以,測量時,應針對不同容量選用合適的量程。一般情況下,1~47μF間的電容,可用R×1k擋測量,大於47μF的電容可用R×100擋測量。

B. Connect the red meter to the negative pole and the black meter to the positive pole. At the moment of contacting, the pointer deflects to the right largely (for the same resistance, the larger the capacity, the larger the swing), and then gradually turn left until it stops at a certain point, which is  the forward leakage resistance that is slightly larger than the reverse leakage resistance. The leakage resistance should generally be above hundreds kΩ, otherwise, it will not work properly. In the test, if there is no charging phenomenon in the forward direction and the reverse direction, that is the needle does not move, which means that the capacity disappears or the internal circuit is broken. If the resistance measured is small or zero, it indicates that the capacitor is large leakage resistance or has been broken and damaged, cannot be use any more.
B、將萬用表紅表筆接負極,黑表筆接正極,在剛接觸的瞬間,萬用表指針即向右偏轉較大偏度(對於同一電阻擋,容量越大,擺幅越大),接着逐漸向左迴轉,直到停在某一位置。此時的阻值便是電解電容的正向漏電阻,此值略大於反向漏電阻。電解電容的漏電阻一般應在幾百kΩ以上,否則,將不能正常工作。在測試中,若正向、反向均無充電的現象,即錶針不動,則說明容量消失或內部斷路;如果所測阻值很小或為零,說明電容漏電大或已擊穿損壞,不能再使用。

C. For the electrolytic capacitor whose signs are unknown, it can be discriminated by using the above method. Frist, measure the leakage resistance at randomly and remember its swing. Then, exchange the test leads to measure a resistance. In two measurements, the large resistance is the forward connection, that is the black meter is connected to the positive pole and the red one is connected to the negative pole.
C、對於正、負極標誌不明的電解電容器,可利用上述測量漏電阻的方法加以判別。即先任意測一下漏電阻,記住其大小,然後交換表筆再測出一個阻值。兩次測量中阻值大的那一次便是正向接法,即黑表筆接的是正極,紅表筆接的是負極。

D. Via the multimeter to charge the electrolytic capacitor from the positive and the reverse side, the capacity can be estimated according to the magnitude of the swinging.
D、使用萬用表電阻擋,採用給電解電容進行正、反向充電的方法,根據指針向右擺動幅度的大小,可估測出電解電容的容量。

Additional information about Kingtronics can be found at http://kingtronics.com/

 

Did your suppliers of aluminum electrolytic capacitors inform that price and L/T will increase much more in near future?

Kingtronics can offer you stable price and shorter L/T than those top suppliers as below. Our lead time is only about 5-9 weeks

We can also discuss more at Electronica 2018 in Munich. Do you have plan for it?

Technology Manufacturer Lead-Times Lead-Times Trend Comments
Electrolytic Capacitors NIC Components 18-20 Increasing L/T pushed out. Some pricing has been increased. Pushouts some cases 40 weeks
Nichion 18-28 Stable SMD 10x10,8x10,6.3x7.7 L/T coming down now between 18-24, Snap-in still 28-30, price increases happening
Surge 14-19 Increasing Lead-times pushing out closing on 20 weeks on some products
Panasonic 14-18 Decreasing Some SMD dropping from 18 to 16 weeks. Some price increases.
United Chemicon 16-20 Increasing L/T increasing the 18-20 weeks

Kingtronics produce and sell a wide variety of Aluminum Electrolytic Capacitors with long life, low Impedance and excellent performance options. 

Welcome your inquiry for more information. 

Catalogue: 
http://www.kingtronics.com/pdf/Kingtronics-Aluminum-Electrolytic-Capacitors-Catalog.pdf

Product Video: 
https://www.youtube.com/watch?v=dOTQpigQKgc

*Load Life: 1000Hr ~10000Hr
*Operating temperatures: 85°C, 105°C, 130°C
*Capacitance: 3.3uF - 22000uF
*Voltage range: 6.3 ~ 160 WV
*ISO/RoHS certified quality
Axial Type, Radial Type, SMD Chip Type, Snap-in Type, Screw Type and Lug Type
*Package: Ammo, Bulk, Tape & Reel 

Labor day pays tribute to the contributions and achievements of American workers, was created by the labor movement in the late 19th century and became a federal holiday. 

Now, Labor day is an international holiday in many countries worldwide. It usually occurs around 1st May, but the date varies across countries.

Taking a break is for accomplishing a longer journey. 

Happy Labor day! Enjoy your holidays!

It’s our pleasure to share with you our one more popluar production line for aluminum electrolytic capacitors: axial type. Hoping to serve your business better! 

If you have any related demand, never feel hesitated to send your inquiries to us! ^^
To get more information via link: 
http://www.kingtronics.com/aluminum-electrolytic-capacitors/

GKT-AL 85°C 2000H Axial Aluminum Ele. Capacitors Low Leakage Features
Low Leakage Current, 2 Rubber Type
ISO/RoHS certified quality
Long load life: 85℃ 2000 hours assured
Operating temperature range: -40℃~+85℃
Wide range capacitance: 3.3uF - 22000uF
Voltage range :6.3 ~ 160 WV
Various dimensions: 8*16mm ~ 25*53mm

GKT-AV 85°C 2000H Axial Aluminum Electrolytic Capacitors Standard Features
Low Voltage, 2 Rubber Type
ISO/RoHS certified quality
Long load life: 85℃ 2000 hours assured
Operating temperature range: -40℃~+85℃
Wide range capacitance: 3.3uF - 22000uF
Voltage range :6.3 ~ 160 WV
Various dimensions: 8*16mm ~ 25*53mm

When using Aluminum Electrolytic Capacitors, please observe the following points to ensure optimum capacitor performance and long life.

1>DC electrolytic capacitors are polarized.

Make sure of the polarity which is marked on the body of the capacitor.  
Application of the reversed voltage may cause a short circuit or damage to the capacitor.  
Use bipolar capacitors when the polarity is not determined or unknown.  
Note that DC electrolytic capacitors CAN NOT be used for AC application.

2>Bipolar capacitors
These capacitors are used only in pulse circuits as well as polarity reverse circuits, but not applicable in pure AC or high ripple current. 

3>Do not apply voltage greater than the rated voltage
If a voltage exceeding the rated voltage is applied, the leakage current will increase, which will damage the capacitor.  
Recommended working voltage is 70% - 80% of rated voltage.  
Using capacitors at recommended working voltage prolongs capacitor life.

4>Do not allow excessive ripple current through the capacitor
The flow of ripple current greater than the permissible (rated) value will cause heating of the capacitor, which may decrease the capacitance and damage the capacitor.
Ripple current through the capacitor must be at or below the allowable level, generally not more than 80% of the rated current.

5>Use specially designed capacitors for the circuits where charge and discharge are frequently repeated.
In circuits subjected to rapid charge and discharge cycles, a capacitor may be damaged and its life may be shortened by capacitance decrease at higher temperature.  

6. Operating temperature range.

The characteristics of capacitors change with the operating temperature.  
The capacitance and leakage current increase and dissipation factor will decrease at higher temperatures. Usage at lower temperature will ensure longer life.

7. Temperature vs. Life.

The expected life of a capacitor is related to its ambient temperature. 
Generally, if the ambient temperature is reduced 10℃, life is doubled at rated voltage. 

8. Check operating frequency.

Electrolytes usually have their capacitance measured at 100 Hz. or 120 Hz.  
However, remember that capacitance decreases and dissipation factor increase as the applied frequency becomes higher.

9. Capacitor Storage

Long periods of storage have virtually no effect on a capacitor’s capacitance and dissipation factor. 
However, such periods can increase leakage current and decrease the capacitors withstand voltage. 
Apply rated DC voltage treatment to the capacitors which have been stored for a long time.

10. The capacitor case is not insulated from the cathode terminal.

The capacitor’s case and cathode terminal connect through the electrolyte. 
If the case is to be completely insulated, that insulation must be at the capacitor’s mounting point.

11. Do not apply excessive force to the terminals and leads.

An excessively strong force applied to the terminals and lead wires may cause leads to break or terminals to separate and, in turn, cause the internal contact to fail.

12. Cleaning of the circuit board after solder dipping.

Clean circuit boards to remove flux or other extraneous matter.  
To ensure protection for the sleeve, its marking, and the capacitor's sealing materials, the capacitor should never be washed or cleaned by halogenous agents or solvents such as trichlorethylene, xylene, acetone, etc. 
Recommended cleaning solvents; Methanol, isopropanol ethanol, isobutene, petroleum ether, propanol and/ or commercial detergents.

13. Be cautious of the temperature and duration when soldering.
Soldering irons should be kept away from vinyl-insulated sleeves of capacitor.  
When the capacitor is dipped in a solder bath, use at less than 260℃ and 10 seconds to avoid damaging the capacitor.

14. Hole positions on the circuit board.
When designing a circuit board, space the through-holes equal to the space between the capacitor's lead wires. 
If the spacing is either greater than or less than the capacitor's leads, mounting will apply stress to the leads, causing short circuits, broken circuits, and increased current.
Also, through-holes on the circuit board as well as lead holes of post-process parts can result in solder splashing onto the vinyl sleeve causing damage.  
Consider hole positions carefully.

Kingtronics team sincerely wishs you & your family have a wonderful Merry Christmas and Happy New Year 2018 in advance.

Thank you so much for all support in the past years, we are at your disposal always, stay contact. ^&^



Kingtronics Xmas holiday: 25th -26th Dec., New Year holiday: 1st Jan.

                               Spring Festival: 16th-19th Feb.

Above our holiday schedules can be found, please feel free to email us your component demands at any time, we will respond your requirements at our earliest time. 

Look forward to win more business with you together in the blessing new year. ~!~

Aluminum Elec. Capacitors
Trimming Potentiometers
Bridge Rectifiers
Diodes & Transistors
Surge Arresters
OSC & Quartz Crystals
MLCC & Tantalum Capacitors

Now that winter's here, it’s more difficult to get up in the morning. In fact, more than half of us admit getting up during winter is a ‘struggle’. Unsurprisingly, Monday mornings are the hardest. So what little changes could you make? Here are 3 top tips to give you that extra ‘morning motivation’ boost:

1> Have a drink.

Drinking water as soon as you wake up will help stimulate the body and help you stay awake.



2> Do something active.

You may not have the time or energy for a full-blown exercise routine every morning, but get your body moving somehow such as forcing yourself to wiggle around under the covers.



3> Remind yourself of what you have to do.

Noting your to-do list on a small whiteboard or a piece of paper kept on the nightstand, which will help you feel at night like you have those things handled, or at least noted, for the following day, and it will give you more reason to get up in the morning.



If none of this works, there's the obvious tip of setting the alarm clock across the room. *^__^*


It’s always been a great pleasure that customers positively help promote our brand, our potential is quite obvious as following, thus more and more customers are willing to advertise, or exhibit for us even at their own cost, no doubt it leads to more win-win cooperation. 

Strength & Advantage
Professional manufacturer
High quality commitment
Well-known brand Kingtronics
Competitive prices
Fast lead time & stock
Strong sales support
Sales response quickly
Strong technical support
Excellent customer service
Exhibitions overseas

Recently one Indian customer helps promote our brand on LED EXPO NEW DELHI, we really appreciate it and encourage it, it definitely results in more considerate support will be provided to them from us.

We warmly welcome more customers seek more support from us, let’s join efforts on expanding business. http://www.kingtronics.com/

Dear valued customers, the year 2017 is becoming to the end, how is everything going? : )
Kingtronics team hopes you have a harvest and business increasing year.

Kingtronics production line will be very tight before every Christmas, in order to help maintaining the same offer and put order into production flow in time successfully, 
Kindly please feel free to advise us your new request and shipment instruction in advance, then we can prepare and proceed the case.

Kingtronics team sincerely wishs you and your family have a wonderful Merry Christmas and Happy new 2018 year in advance.

Kingtronics strong production lines:

RKT--Trimming potentiometer

RKT-3006P           25pcs/tube
RKT-3386F            50pcs/tube
RKT-3296X           50pcs/tube
RKT-3266W         50pcs/tube
RKT-C3305           2.5kpcs/Reel

MKT--Radial multilayer ceramic capacitor

0.1uF 50V +/-10% X7R  P:5.08MM (0805)  Ammo RoHS         2.5kpcs/Ammo
2200pF 50V +/-2% NPO P: 5.08mm              Bulk RoHS   

GKT-Aluminum Electrolytic Capacitor

Radial Type         
GKT-GS  2200uF 63V +/-20%  dimension: 18*35mm P:7.5mm 85°C Bulk RoHS        
GKT-GT   2200uF 50V +/-20%  dimension: 16*35mm P:7.5mm 105°C Bulk RoHS    

SMD Type 
GKT-VA  33uF 63V +/-20%    size: 8*10.5mm  85°C  Tape & Reel  RoHS            
GKT-VT   470uF 35V +/-20%    size: 12.5*13.5mm 105°C  Tape & Reel RoHS 

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

About

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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