What is a diode? A diode is a semiconductor device that essentially acts as a one-way switch for current. An ideal diode will have zero resistance in one direction, and infinite resistance in the reverse direction. They are also known as rectifiers because they change alternating current (AC) into pulsating direct current (DC).

Common package diodes in daily life, such as SOD123, SOD323, SOD523, SOT23, ZMM series LL34 package, ZM47**A series LL41 package, BZX55C series DO35 package and so on.

We will offer you a nice price whether it is a plastic package diode or a glass packaged diode. Let us know by info@kingtronics.com, if you are interested.

Kingtronics provides a stable and good quality Ceramic Trimmer Capacitors with good lead time.

Although Murata stop offer TZC3 series, but with Kingtronics 3MM Ceramic Trimmer Capacitors (KKT series) you do not need to worry about it.  

Welcome for any inquiry.

*Low capacitance drift
*High durability from vibration, dust, moisture and flux
*Color coded case permits easy identification
*Very good Q and high resonant frequency
*Designed for reflow soldering.
*Small size with external dimension of 3.2(W) x 4.5(L) x 1.5(T) mm

*Remote Keyless Entry System, Measuring Instrument
*Car Alarm Remote Controller, Car Audio, Traffic Card Reader
*Security System, Wireless Microphone
*Cordless Phone, Wireless Repeater
*Two-Way Radio Communication (FRS, GMRS, LMR)

Product Video: https://www.youtube.com/watch?v=Men9BCDlODk

Lead Time: Regular stock ~ 4 weeks

Cross reference for Kingtronics and Murata P/N

Kingtronics P/N 

Murata P/N 

Capacitance (pF MAX)

KKT303TR (Black)

TZC3Z030 (Brown, Black)


KKT306TR (Blue)

TZC3Z060 (Blue, Black)


KKT310TR (Ivory)

TZC3Z100 (White, Black)


KKT320TR (Pink)

TZC3Z200 (Red, Black)


KKT330TR (Green)

TZC3Z300 (Green, Black)


Kingtronics diodes are superior compared with NXP Semiconductors, Diodes and Nexperia, both in price and lead time,and the qualities of products are the same.

The application areas of diodes include television systems as phase detectors, limiters, clampers; computer systems as logic gates, clampers; power supply systems as rectifiers and inverters; communication systems as limiters, clippers, and gates.

The best-selling package in the diode market:

1.N-Channel Power MOSFETs 2SK3018 SOT-323
Plastic, surface-mounted package; 3 leads; Small-outline transistor; N-channel MOSFET; Fast  switching speed.

2. N-Channel Power MOSFETs 2N7002DW SOT-363
Plastic, surface-mounted package; 6 leads; Small-outline transistor; Dual N-Channel; Enhancement Mode ;Field Effect Transistor.

3. SOD-123 Silicon Epitaxial Planar Diode BAV21W
Schottky Diodes & Rectifiers; High Voltage Switching Diodes;

4. SOD-323 Schottky Barrier Rectifier BAT54WS
Small signal Schottky diodes, Diodes and Rectifiers manufactured; for low current rectifier circuit applications; low forward voltage.

5. SOT-23 Schottky Barrier Rectifier BAT54C
A small outline transistor (SOT) is a family of small footprint, discrete surface mount transistor commonly used in consumer electronics; 3 leads: Surface mount device.

6. Silicon Epitaxial Planar Zener Diodes ZMM1-ZMM75
LL-34 Diodes MiniMELF case especially for automatic insertion; Hermetically Sealed Glass Zener Voltage Regulators; These diodes are also available in DO-35case with the type designation BZX55C.

7. Silicon Planar Power Zener Diodes ZM4728-ZM4761
Glass case LL41 Small Signal Schottky Diode; available in DO-41case.For general purpose applications

8. Zener Diodes BZX55C
Axial lead Silicon Planar Zener Diodes; DO-35 package (JEDEC), Best suited for Industrial, Military and Space Applications. The glass passivated diode chip in the hermetically sealed glass package with double studs provides excellent stability and reliability.

9. Silicon Planar Power Zener Diodes 1N4727A-1N4761A
1N47 Series Zener Diodes,1W DO-41, Zener voltage regulator diodes, Hermetically sealed glass silicon zener diodes; for use in stabilizing and clipping circuits with high power rating.

Yageo said that due to the 5G driving demand for tantalum capacitors and the price increase effect driven by the epidemic, it is estimated that the price of tantalum capacitors will double by the end of this year.

Tantalum capacitors and MLCC, aluminum electrolytic, and film capacitors are the four commonly used capacitors in the industry. Tantalum capacitors have high density, high reliability and stability, and wide temperature range characteristics. They are widely used in industrial and consumer markets. According to statistics, in 2019 The global market size is approximately USD 1.6 billion.

Tantalum capacitors are widely used in fast charging devices for mobile phones due to their stable output and small size. In addition, tantalum capacitors are also ideal choice for 5G devices with large outdoor temperature changes and high requirements for service life and reliability. With the start of 5G commercial use, 5G base stations will be deployed in large numbers, which will increase the demand for tantalum capacitors.

At present, international tantalum capacitor manufacturers represented by the US companies VISHAY, KEMET, and AVX dominate the international tantalum capacitor market. However, due to the spread of the epidemic in Europe and the United States in the second quarter, the production capacity of overseas manufacturers was affected, and the gap between supply and demand expanded. AVX took the lead in May this year increase the price by 10%-15%. Yageo stated that the price increase of some items will take effect from May until the end of September; since manufacturers increased their prices, the surrounding spot retail sales have increased by 2 to 3 times, and the industry predicts that the price increase may be doubled by the end of this year. 

It does not seem that suppliers are alarmist. Under the influence of the epidemic and many uncertain factors in the international supply chain, the price surge of tantalum capacitors may intensify.

Kingtronics is honored to be listed as a leading global manufacturer of Radial MLCC in the global market research report.

We produce and sell Radial MLCC with excellent quality and lead time around: 3-5 weeks ! Welcome your inquiry to check our best offers.

MKT—Radial Multilayer Ceramic Capacitor (NPO, X7R, Y5V) Output 100kk/month
Product datasheet: https://www.kingtronics.com/pdf/radial-mlcc-capacitors.pdf

AKT—Axial Multilayer Ceramic Capacitor (NPO, X7R, Y5V) Output 5kk/month
Product datasheet: https://www.kingtronics.com/pdf/axial-mlcc-capacitors.pdf

Kingtronics MLCC Multilayer Ceramic Capacitors Factory: https://www.youtube.com/watch?v=7J2jbfXuoc4

**Cross reference:








MKT Series

SR, SA Series


K (Mono Cap)

THD Series

FK Series


Kingtronics Excellent Lead Time and Price Support for Multilayer Ceramic Capacitor—Kingtronics MKT, AKT

The structural material for aluminum electrolytic capacitors and their impacts on sound quality are summarized in below table. 

A skillful material combination is essential in providing superior sound performance.


Structural Material

Material Characteristics

Effect on Capacitor Characteristics

Effect on Acoustics

Basic Material

Electrode foil, forming, etching

Heat resistance


       Generally, the sound quality improves at lower multiplier values.


Conductivity, viscosity

ESR tanδ

        Reduces the sense of distortion in the sound and increases the sense of clearness.

Electrolytic paper

Density Thickness

ESR, tanδ
Manila: good
Craft: poor


       Improvements in reverb, which requires a large amount of information.


        Reduces reverb, which improves the attack.

Ceramic content

         Improves the sound field, the clarity, and the sharpness.

Silk fiber content     Improves the midrange responsiveness and low range richness there in

Lead lines



CP Lines

        Rough but strong

OFC Lines

        Sweet high region

Case materials sleeve

Characteristic vibrations

Vibration characteristics

       Stabilization through Frost processing and through vibration-absorbing alloys, etc.; improved sensitivity, changes to sound quality through the sleeve materials and the dye that is included.

Seal rubber

Characteristic vibrations

Vibration characteristics Life expectancy


       The sense of rhythm comes through powerfully.


       Goes deep, with stable orientation

Manufacturing Method

Number of windings

L component

Induced voltage

       Generate the sound through partitioned coils, etc. to improve resolution.

Our qualified axial type Aluminum ecap can be your product solutions. Welcome your request. 

Aluminum Electrolytic Capacitors - Axial Type

Kingtronics P/N

Load Life






Low Leakage Current












Audio, DF at Max 4% BP




Audio, DF at Max 5% BP




Audio, DF at Max 10% BP




Audio, DF at Max 10% BP

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


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
Convention and Exhibition Centre,HongKong
Date: 13-16 October, 2019
Booth No.: 5G-C26

Meet Kingtronics in Munich soon
New Munich Trade Fair Centre, Germany
Date: 10-13 November, 2020
Booth No.: To be advised