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Structure of aluminum electrolytic capacitors: 

Electrodes and dielectric foil of aluminum electrolytic capacitors:

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We know we have a good heart and we feel like to making the help for some adolescent who is left-behind children. If you have the empathy to empathize with a good heart, probably you can share the same kind of morals I do.

A.Power supply circuits

Stable DC power supplies are divided into intermittent control types (switching regulator) and continuous control types (Dropper).
Recent trends have shown an overwhelming growth in switching regulators, and so we talk mainly about switching regulators below.
The capacitors used in switching regulators are selected depending on the circuit. A forward switching regulator is shown as an example in Flg.6-1. Another type is a fly back regulator.



(1) Aluminum electrolytic capacitors for input (primary) smoothing circuits The Aluminum electrolytic capacitors for input smoothing circuits used on commercial voltages (100 V.AC, 200 V.AC) and commercial frequencies (60 Hz, 50 Hz) must have a high withstand voltage and a ripple current resistance complying with twice the commercial frequency (normally full-wave current).
These capacitors have large volumes (ground contact areas) compared to other components they are assembled with ,and so the demand for more compact capacitors, as well as power supplies, is strong. Another problem is the need for longer aluminum electrolytic capacitor lives, but products guaranteed for 5000 hours at 105℃ have recently been developed, thus realizing freedom from maintenance for 10 years.

(2) Aluminum electrolytic capacitors for output smoothing circuits The rated voltage of aluminum electrolytic capacitors used for smoothing at switching frequencies (20 k to 500 kHz) is determined by the output voltage, and they must have low impedance (low ESR) at switching frequencies. Therefore aluminum electrolytic capacitors for output smoothing are designed to have low impedance at 20 k to 500 kHz, and the recent development of a low resistance electrolyte using new materials has resulted in products with 1/3 to 1/4 the impedance of conventional products with the same volume. These low impedance products also have an extremely stable life

B. ECU for automotive

The electronization of in-vehicle control is accelerating these days. ECU (electrical control unit) which carries out in-vehicle control is asked for high reliance, a miniaturization, and high quality, and many aluminum electrolytic capacitors are used for it. A typical application example is shown below. 

(1) Power train ECU (Engine、 HV-Inverter etc.)


(2) Motor control ECU（Power steering, a blower / radiator fan motor, an electric pump etc.）


(3) LED lump


(4) Airbag


In automotive application, there are mainly an object for smoothing of input and output of the power supply of ECU and an object for energy reserve.
The rated voltage of 25 to 50 V.DC is mainly used.Not only current aluminum capacitor, aluminum capacitor with conductive polymer and
electrolyte is increasing due to improve quality, performance, with standing-voltage.It contributes to the small size of ECU, and a weight saving these days.

We have to look at several factors that created this shortage tsunami that blindsided everyone. We have broken them down into the following: supply, demand, unfortunate events, and poor decision-making.

Surge in Demand
When Covid-19 restrictions rolled out worldwide, stay-at-home mandates were the norm to prevent the transmission and spread of the virus. Everyone shifted to work from home setups, businesses went online, and messaging applications were downloaded immediately. Consequently, demand for additional electronic gadgets skyrocketed. People upgraded their laptops, purchased new desktops, more tablets, etc., to meet the requirements of the current situation.

This bottlenecked supply chains, as retailers did not prepare for the sudden increase in demand for new requirements. Add the existing projects in their pipelines, and you have the perfect recipe for a global semiconductor disaster.

Bad Luck
Aside from facing COVID-related challenges, some of the biggest foundries in the world were hit by a series of unfortunate events that disrupted their production process even more.

On March 19, an electric overload burned down 600 square meters of the Renesas plant in Naka, one of the most prominent players in the global chip market. It destroyed 23 machines and rendered other areas in the facility temporarily unfit for use.

The plant was running to total capacity again by June, but the damage has been done.

In Taiwan, the worst drought in recent memory threatened to make the chip shortage even worse. Producing chips require tremendous amounts of water, which the drought is making impossible to do. In Texas, winter storms forced some of the country’s only chip plants to stop production.

Still, there are only a handful of big chip manufacturers globally, making the semiconductor industry more vulnerable.

Radial type Aluminum Electrolytic Capacitors widely use in the electronic industry.Include automotive power, industrial LED lighting, telecom infrastructure and many.

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

Following are some cross reference of Radial type Aluminum Electrolytic Capacitors.

Dear valued customer,

GKT-VR, GKT-VY suspended orders due to lack of raw materials

GKT-VX series can be provided, but please note that MOQ needs to be as following.

if you need receive cargo before Christmas, kindly suggest us send the order earlier, we will check case by case for u !

Kingtronics Authorized Distributor: Arrow, Newark, Farnell, TME

Kingtronics SMD E-cap Factory video → https://www.youtube.com/watch?v=ZpMf5VRjjFU&feature=youtu.be

Kingtronics Aluminum Electrolytic Capacitor is designed with  long life, low Impedance, wide Temperatures range and excellent performance. our SMD type Aluminum Electrolytic Capacitors are available in the range of <1 μF to several farads with working voltages up to several hundred volts DC. A thin layer of aluminum oxide forms the dielectric.

Following are our E-cap catalog and SMD type cross reference, welcome contact us for more information. application:
power supplies,
Industrial Welding Machines,
Variable Frequency Speed Controller
Power Socket
Lamp,  Lighting
LED Power Device, LED Driver,
Power Meters, Energy Meters, and other general purpose.

Kt Kingtronics - Aluminum Elec. Capacitors Catalog : https://www.kingtronics.com/pdf/Kingtronics-Aluminum-Electrolytic-Capacitor-Leaflet.pdf
Kingtronics SMD Type Aluminum Electrolytic Capacitors Factory: https://www.youtube.com/watch?v=ZpMf5VRjjFU&t=3s

To help customer with their request more precisely, we now have new product for Alumium Electrolytic Capactors Snap-in type terminal series.

GKT-SB is with good self-healing performance and high ripple current.

Below is the product feature, welcome check our best price. 😊 

• Long load life: 1000H
• Operating temperature range: 10V~100V: -40℃+85℃; 160V~450V: -25℃~+85℃
• Wide range capacitance: 300uF - 22000uF
• Voltage range : 10V - 100V, 160V – 450V
• Various dimensions: 22*25mm - 35*50mm