Diode is a dual electrode electronic component with asymmetric conductivity. When conducting forward, there is an infinitesimal resistance between its two electrodes (anode and cathode), while in reverse, there is an infinitesimal resistance, meaning that current is only allowed to flow through the diode in a single direction.
In 1874, German physicist Karl Braun discovered the rectification ability of crystals. Therefore, the first generation diode developed in 1906, the "cat whisker diode," was made from mineral crystals such as galena. Early diodes also included vacuum tubes, which had two electrodes, an anode, and a thermal cathode. After the discovery of semiconductor performance, diodes became the world's first semiconductor device. Nowadays, most diodes are produced using silicon, and other semiconductor materials such as selenium or germanium are sometimes also used. The most common structure currently is a semiconductor performance junction chip connected to two electrical terminals through a PN junction.

A diode has two terminals, anode and cathode, and current can only flow in a single direction. That is to say, current can flow from the anode to the cathode, but not from the cathode to the anode. The application of the unidirectional characteristic possessed by diodes is commonly referred to as the "rectification" function. In a vacuum tube, the voltage applied between the electrodes can allow hot electrons to travel from the cathode to the anode, thus having a rectifying effect. The conversion of alternating current to direct current, including the modulation of radio signals by radio receivers, is achieved through rectification.

Due to its characteristic of blocking forward and reverse flow, diodes can be thought of as electronic versions of check valves. However, in reality, diodes do not exhibit such perfect switching performance, but rather exhibit complex nonlinear electronic characteristics determined by specific types of diode technology. Generally speaking, the diode will only start working when the threshold voltage is reached in the forward direction (this state is called forward bias). The voltage drop at both ends of a forward biased diode is only slightly related to the current and is a function of temperature. Therefore, this feature can be used for temperature sensors or reference voltages.

The nonlinear current voltage characteristics of semiconductor diodes can be changed by selecting different semiconductor materials and doping different impurities to form impurity semiconductors. In addition to being used as a switch, diodes with changed characteristics also have many other functions, such as adjusting voltage (Zener diodes), limiting high voltage to protect circuits (avalanche diodes), radio tuning (varactor diodes), generating radio frequency oscillations (tunnel diodes, Gunn diodes, IMPATT diodes), and generating light (light-emitting diodes).

In semiconductor diodes, there are types that utilize the PN junction effect of P-type and N-type semiconductor interfaces, as well as the Schottky effect generated by metal semiconductor bonding to achieve rectification. If it is a PN junction diode, it is the anode on the P-type side and the cathode on the N-type side.

Kingtronics Hot product line【Diode Rectifier,Transistor】-1N4148W, BZX84C,ES2A, RS1A, SS12,SS22, US1A: https://www.youtube.com/watch?v=Si3wc4ZnXyE

Contact us today for best offer: info@kingtronics.com Skype: kingtronics.sales2
 Kingtronics Introduction of Diodes

Any order plan scheduled in early October ?

Please note early Oct. our production team will have one week holiday for National Day.

Our production line is tight and fully arranged, so that if order in early Oct. lead time might postpone 2-3 weeks later.

It will be wiser if possible confirm order before end Sept. to have more chances reach better lead time.

Meanwhile, we have hot stock for Diode LL4148, M7, SMD 3mm trimmer capacitor now !

Please don’t hesitate to contact us, we’re willing to support !

Learn More:http://kingtronics.com/




trimmer potentiometer

Aluminum Electrolytic Capacitor





























Spring, it is a season for feeling the warmth of the sun, smelling the fresh air, seeing the green grass and flowers.

Tomb-sweeping Day is coming ! It is a time for remembering loved ones who have departed and visiting graves. In ancient China, besides sweeping tombs, people would get together for outing to enjoy the charming Spring during these days ! The most popular activities are swinging, kite-flying, pushing-and-pulling, gamecocking and so on. 

In modern times, people prefer to traveling in this season ! 
The Lijiang Liver in Guilin City is one of the best choices ! It is famous for its unique beauty of four characteristics: verdant mountains, crystal-clear water, mysterious caves, and exquisite rocks. At the rainy season, the river is shrouded with mist, the hills look more graceful when covered with such a fine veil...

Supplier Company: Kingtronics International Company         www.kingtronics.com
ISO 9001: 2008 manufacturer, 2 factories, ISO & UL & SGS certified. 

Here is a piece of good news! Kt Kingtronics is planning to attend Russia Chip EXPO 2017. By this chance, we will bring our professional technical support and valued information, showing you Kt Kingtronics strengths and best side. We expect to have a meet with you for further talks and discussions in our booth.

The exhibition "ChipEXPO - 2017" will be held 31.10 - 02.11.2017 in the "Expocentre" in Pavilion "Forum". You can visit website on http://www.chipexpo.ru/en for more details.

Kt Kingtronics will update our information online in time. If you have any questions or any good suggestions for this exhibition, please feel free to contact us. 

One may fall in love with many people during the lifetime. When youfinally get your own happiness, you will understand the previous sadness is kind of treasure, which makes you better to hold and cherish the people you love. <《泰坦尼克号》 一个人一生可以爱上很多的人,等你获得 真正属于你的幸福之后,你就会明白一起 的伤痛其实是一种财富,它让你学会更好 地去把握和珍惜你爱的人>

Happiness is not about being immortal nor having food or rights in one's hand. It’s a bout having each tiny wish come true, or having something to eat when you are hungry or having someone's love when you need love. < 《飞屋环游记》 幸福,不是长生不老,不是大鱼大肉,不 是权倾朝野。幸福是每一个微小的生活愿 望达成。当你想吃的时候有得吃,想被爱 的时候有人来爱你>

I don't think that when people grow up, they will become more broad-minded and can accept everything. Conversely, I think it 's aselecting process, knowing what's the most important and what's the least. <《阿甘正传》经典中的经典~~ 我不觉得人的心智成熟是越来越宽容涵盖 ,什么都可以接受。相反,我觉得那应该 是一个逐渐剔除的过程,知道自己最重要 的是什么,知道不重要的东西是什么。而 后,做一个纯简的人>

One is always on a strange road, watching strange scenery and listening to strange music. Then one day, you will find that the things you try hard to forget are already gone. <《蓝莓之夜》 一个人总要走陌生的路,看陌生的风景, 听陌生的歌,然后在某个不经意的瞬间, 你会发现,原本是费尽心机想要忘记的事 情真的就那么忘记了>

In your life, there will at least one time that you forget yourself for someone, asking f or no result, no company, no ownership n or love. Just sk for meeting you in my mo st beautiful years. <《恋恋笔记本》 一生至少该有一次,为了某个人而忘了自 己,不求有结果,不求同行,不求曾经拥 有,甚至不求你爱我。只求在我最美的年 华里,遇到你>

I know someone in the world is waiting for me, although I've no idea of who he is. Bu t I feel happy every day for this. <《返老还童》 我知道这世上有人在等我,尽管我不知道 我在等谁。但是因为这样,我每天都非常 快乐>

Supplier Company: Kingtronics International Company         www.kingtronics.com
ISO 9001: 2008 manufacturer, 2 factories, ISO & UL & SGS certified. 

Kingtronics team is reviewing the payment term for all of our customers who are enjoying open account payment term.

Your previous order performance and 2017 order forecast would be the most important factors to decide your payment term in the following days.
Supporting with the same or better payment term, or change back to original TT full payment in advance...

Of course, if you have kept increasing business with Kingtronics these years, your positive annual forecast may have chance to help us manage to win a better payment term from our in-house.

Please feel free to share us your favorable 2017 order forecast for Kingtronics.
Hoping both of us can grow up together and benefit more from our further cooperation !

Most of Kingtronics' team members are back from Spring Festival holiday, a more diligent new year is starting, we are willing to assist you whenever there is an opportunity, kindly share more business chances in 2017. 

Life is too short to wake up in the morning with regret, love the people who treat you right. Kingtronics is the one who deserves trust and love, for achieving this, it's obvious to all we are continuously contributing all endeavours, no doubt it's also your cooperation leads our improvements, as a man sows, so let him reap, hereby we feel grateful for all of your support and as return will support you more and better.

Let us repeat Kingtronics' hot sellers, hope it's an unforgettable mark in your 2017 memory: 
aluminum electrolytic capacitormultilayer ceramic capacitortantalum capacitordiode
bridgetransistortrimming potentiometercrystaloscillator

Do you buy active components?

We have better prices for these parts compared with MCC, NXP, Diotec, Fairchild... Would you pls check and send me your inquiry/order?

Bridge rectifier MB2S~MB10S MBS T&R RoHS   SPQ:2.5kpcs/reel    UL Approval

Diode rectifier M7 DO-214AC T&R RoHS   SPQ:5kpcs/reel 
Diode rectifier LL4148 LL-34 T&R RoHS     SPQ:2.5kpcs/reel 
Diode rectifier BAV99 SOT-23 T&R RoHS   SPQ:3kpcs/reel

Transistor BC807-16/25/40 SOT-23 T&R RoHS    SPQ:3kpcs/reel
Transistor BC847A/B/C SOT-23 T&R RoHS         SPQ:3kpcs/reel

Notice: we will exhibit at Electronica 2016 this November in MunichGermany. Will you go there? Welcome to visit our booth and check our samples, catalogues, leaflets, file folder, sample kit...

Dear clients, wish you enjoy a nice weekend with your families. ^_^

We cooperated with Setron from 2014, and it mergered with Arrow Electronics last year. Now we directly work with Arrow. Cheers!

Hope this can make you know more about us and share with us your precious business chance. We sincerely hope to become your strong backup force in your path to success.

Capacitor, Trimming potentiometerQuartz crystalDiode rectifierBridge rectifier
TransistorSurge arrester

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
YouTube: www.youtube.com/c/Kingtronicskt


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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