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.

Kingtronics Snap-in type Aluminum El-cap is workable for PCB Mounting. We can replace below brands with more competitive price & L/T support, about 3~4 weeks.
Below is the cross table. Welcome your inquiry to check our best offer for you.

Aluminum Electrolytic Capacitors - Snap-in Type Cross reference

 

Kingtronics

Load life

NIPPON,

Samwha

YAGEO

 

CHEMI-CON

 

GKT-SS

2,000hrs at 85

SMQ

HC

LH

 

SMH

AM

 

 

3,000hrs at 105

SMM

 

 

 

GKT-ST

2,000hrs at 105

KMQ, KMH

HE

LG

 

KMT

 

 

 

KMR

 

 

 

GKT-SC

5,000hrs at 85

 

 

 

 

 

 

 

 

GKT-SD

5,000hrs at 105

KMS

HE

LV

 

KMM

HK

 

 

KMV

 

 

 

Kingtronics

Load life

Epcos

Panasonic

Nichicon

 
 

GKT-SS

2,000hrs at 85

B41231

TS-UQ

LS

 

B43510/B43520

T-UP

LG

 

3,000hrs at 105

B43511, B43521

 

 

 

GKT-ST

2,000hrs at 105

B41252

TS-MD

GG

 

B43504

TS-HC

GL

 

B43515/B43525

 

AK, AQ

 

GKT-SC

5,000hrs at 85

B43501

 

 

 

B43540

 

 

 

GKT-SD

5,000hrs at 105

 

TS-ED

GU

 

 

TS-EE

GN

 

 

TS-HA/HB

GW

 

Contact us

Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
E-mail: info@kingtronics.com
Skype: kingtronics.sales
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Web: www.Kingtronics.com
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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

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