Since 2018, the price hike of semiconductors has been rising from silicon wafers, passive components, MOSFETs to resistors, aluminum electrolytic capacitors, and now diodes continue to rise in price, and the price increase far exceeds expectations. In 2019, after the price surge of components last year subsided and even the price began to fall, it also ushered in a wave of diode price increases...

According to media reports, diodes price of international IDM manufacturers continued to rise in the first quarter of 2019. Manufacturers such as ON Semiconductor and Vishay are almost all rising.

In addition to the price increase of diodes, the delivery of bridge rectifiers, schottky diodes, transient voltage suppression, rectifiers, switching diodes, etc. has been extended to 16-40 weeks, the longest even 52 weeks.

At present, the demand for new energy electric vehicles and vehicle electronics in the market has risen sharply. For example, the advanced driver assistance system integrates blind spot detection, lane departure warning and parking assistance, and the number of diodes is several times higher than in the past.

It’s time to contact Kingtronics for various cost-effective solutions. Our L/T and price are even better than before, your order schedules will be easily to be fulfilled.

More information about Kingtronics Diodes please click the link:

Good day valued customers,

Now, Kingtronics sincerely invites you to know our unbeatable price of diode M7 & LL4148,  the special offer is for building more trust between us and winning a strong market share for you.

As for the exact surprise offer, please contact with our sales to expose it, we have confidence you will benefit much.

This offer is valid until 31th Dec 2016, with best lead time 2-3 weeks. First come, first served.

Product details links:

5kkpcs or over           US$surprise
3kkpcs or over           US$surprise
1kkpcs or over           US$surprise

5kkpcs or over           US$surprise
2kkpcs or over           US$surprise
1kkpcs or over           US$surprise

Better offer is always for larger demands, more diode inquiries are expected too. FYI: Diode products are widely used in LCD TV, CRT color TV sets, monitors, speakers, energy-saving lamps, microwave ovens, printers, set-top boxes, small household electrical appliances and other fields. 

If you need more than 1KKpcs of LL4148 and M7 Diodes, please contact with us, we have special offer for large quantity enquiry!
We even can provide free shipping service based on different countries. Try now !!!

Beside LL4148 and M7 Diodes, we also produce many kinds of diodes and rectifiers. 
Such as General Purpose Rectifiers, Fast Recovery Rectifiers, High Efficiency Rectifiers, Super Fast Recovery Rectifiers.
Schottky Barrier Rectifiers, Zener Diodes, Small Signal Switching Diode, Transient Voltage Suppressors, NPN/PNP Silicon General Transistors, Small Signal Transistor.
Single Phase Glass Passivated Bridge Rectifiers, Three Phase Glass Passivated Bridge Rectifiers.

More information please check: and

Dear Valued Customers,

Summer vacation is approaching, believe you have made a perfect plan to take a good holiday with your family. 
Before that, do you have enough stock to fulfill your production line? There are available stock of Diodes M7 & LL4148 in our HK warehouse which can be shipped immediately after order confirmed. First come first serve. pls contact our sales to place order asap if need.  

Enjoy yourself during holidays!

M7 DO-214AC T&R RoHS  MPQ: 5,000pcs/ Reel  Stock Qty Available: 1,780,000pcs
LL4148 LL-34 T&R RoHS
  MPQ: 2,500pcs/ Reel  Stock Qty Available: 1,727,500pcs

Dear Valued Customers,

Summer holiday is coming! Have you finished scheduling for your exciting trip? I estimate that you should have purchase plan before that, right?

In order to help you speed up the lead time. We have prepared below stock for our best sellers diode M7 & LL4148, first come first serve.

Why don't you take this opportunity to buy from us?

Wishing you a wonderful holiday in advance! O(∩_∩)O~

M7 DO-214AC T&R RoHS  MPQ: 5,000pcs/Reel  Stock Qty Available: 1,100,000pcs
LL4148 LL-34 T&R RoHS  MPQ: 2,500pcs/Reel  Stock Qty Available: 327,500pcs

Best regards,
Kingtronics Sales Team

Dear All,

Now we are nearly selling out our rest 2kkpcs LL4148 stock.

We have the lowest price with excellent quality, so we sold out a lot soon. Pls don't miss the chance of our last 700kpcs LL4148 stock. Send us your request now.

Our Stock Notification:
LL4148 LL-34 T&R RoHS SPQ:2.5kpcs/reel  only 700kpcs stock available now.

Looking forward to hear from you soon.

Thanks a lot in advance.

Kingtronics sales team

Diode have many types: ordinary rectifier diodes, ultra-fast rectifier diodes, transient voltage suppression diodes, switching diodes, high voltage diodes, diode bridge rectifier, SMT surface mount fast recovery diodes, surface-mount schottky diodes SMD, fast recovery rectifier diodes, schottky diodes, bi-directional trigger diodes, zener diodes,damping diodes, ordinary surface mount diodes SMT, SMT surface mount ultra-fast diodes, TO-220 packaged diodes, power snubber diode, etc.

Kingtronics diode include: M7, 1N4001S-1N4007S, 1N4001-1N4007, 1N5391-1N5399, RL201-RL207, 1N5400-1N5408, 6A05-6A10, FR101- FR107, 1N4933-1N4937, FR151-FR157, FR201-FR207, 1N5817-1N5819, 1N5820-1N5822, LL4148, BZV55C, RS1M, SM4007 melf, UF4007.1N4727A-1N4761A, BZX55C, 1N4148, 1N4148W, 1N4148WS, 1N4148WT.

Do you have interest to promote our diode M7 to your customer? It is very popular in the market with widely application.

We give 1 week delivery, output: 90kkpcs per month

Diode M7 (SMD 1N4007, SMA)  DO-214AC T&R  RoHS     Qty: 5,000,000pcs   US$0.005/pc 
LL4148 LL-34 T&R RoHS      Qty: 1,000,000         US$0.0032/pc

Diode M7 Application:
Alarm, automotive, communications, power meter, ballast construction, payment terminals, terminal block, automobile electronics, TV, cash registers...

Hi, do you know our diode M7 and LL4148? These diodes are Kingtronics strong items, very popular and have big demand.

We can sell you 1 reel samples for test, do you have interest? Total US$62 include bank charge.
If you do not need 1 reel of samples, we can offer free samples, 10pcs to 50pcs. Do you need free samples?

Please also send me your quantity of M7 and LL4148, let me quote you best prices, below prices are for samples only.

1 reel LL4148 Mini melf T&R RoHS 2500pcs, sample price US$0.0044/pc US$11
1 reel diode M7, SMA T&R RoHS 5000pcs, sample price US$0.009/pc US$45
You can pay us through Paypal: total US$62 for above samples, (inlcude 10% bank charge)
Kingtronics paypal:

Diode M7, LL4148, S1M, GS1M, SM4007, UF4007, 1A7, 6A10, 1N4937, 1N5343B; Zener BZV55C, BZX55C, BZX84C, BZX85C, 1N4761A, ZM4728; Bridge DB107, MB10S, KBL410, KBPC2510, KBPC3510, GBU410, GBJ810 etc...

Kingtronics diode LL4148 have a very best offer on the market,Do you have interest in it ?


  • Silicon epitaxial planar diode
  • Small signal diode
  • 500mv power dissipation
  • Reverse voltage 75 V
  • High temperature soldering guaranteed
  • High stability and high reliability
  • 250℃/10S at terminal
  • Case:Minimelf/SOD80
  • Packaging:Tape and Reel
  • MPQ:2.5Kpcs/reel

We have very fast delivery date just need 3~4weeks,our Kingtronics brand "KINGTRONICS".

We will provide you with the Highest Quality Product with the Best Service Available at the Lowest Possible Price.

What are you waiting for?Just send you email to for your interest.Thank you!

Contact us

Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
Skype: kingtronics.sales


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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