We just came back from our CNY holiday,and we had a great holiday.^_^

Now we would like to take a monent to let you know our updated stock about diode M7 and LL4148 after CNY holiday.

Our Stock Notification:
LL4148 LL-34 T&R RoHS SPQ:2.5kpcs/reel 2kkpcs stock available

M7 DO-214AC T&R RoHS SPQ:5kpcs/reel    sold out

M7 is always best seller. Although we had sold out, but we will replenish it asap. If you still have request, pls feel free to contact us, and we will try our utmost to give you the quickest lead time. 

Pls kindly note there are only 2kkpcs LL4148 at present, and it will be sold out this month. Pls catch the last chance because our price is much more competitive with the stock available. 

Thank you for your kind attention and wait for your business cooperation soon. 

We will have a CNY holiday soon, but we have specially prepared below stock for you. Don't worry about the lead time during this period.

Pls feel free to conatct us even in CNY holiday. Our sales office will be only closed from 6th Feb to 10th Feb.

Diode Rectifier:                                        
M7 DO-214AC T&R RoHS       10kkpcs stock  (replace diode S1M, SMD 1N4007, GS1M)
LL4148 LL-34 T&R RoHS        8kkpcs stock

Transistor BC847A/B/C SOT-23 T&R RoHS 
Transistor BC807-16/25/40 SOT-23 T&R RoHS

Switch diode BAV70 SOT-23 T&R RoHS 
Switch diode BAV99 SOT-23 T&R RoHS

New Year is coming soon.Wish you have a wonderful holiday in advance.

Below hot sellers many buyers will buy for resale or stock before New Year. Do you have any demand for those? We will try our best to satisfy you well with competitive prices as per your request.

And we are on the stage of evaluating old distributors and develop more potential new distributors, do you have interests in being kingtronics distributor? 

RKT trimmer potentiometer3296 3006 3386 3266 3362 3329 3590S SMD C3305
TKT radial tantalum capacitors & MKT radial multilayer ceramic capacitors 

Transistor BC847A/B/C SOT-23 T&R RoHS 

Transistor BC807-16/25/40 SOT-23 T&R RoHS 

Switch diode BAV70 SOT-23 T&R RoHS 

Switch diode BAV99 SOT-23 T&R RoHS 

M7 DO-214AC T&R RoHS 

LL4148 LL-34 T&R RoHS

Different types of diodes have different parameters.We must understand the following main parameters:

4. Reverse Current

Diode reverse current is at a temperature and a predetermined maximum reverse voltage is applied, current flows through the diode reverse. The smaller the reverse current, the conductive performance of the tube in one direction, the better. It is noteworthy that the reverse current and temperature are closely related, the temperature is increased by about 1 0 ℃, the reverse current increases doubled. For example 2APl type germanium diode, at 25 ℃, the reverse current of 250μA, the temperature rises to 35 ℃, reverse current will rise to 500μA, at 75 ℃, its reverse current has reached 8mA, not only lost a single direction of the conductive characteristics, the tubes will overheat and damage. Than the germanium diode silicon diode has good stability at high temperatures.

5. Reverse Recovery Time

From the forward voltage becomes a reverse voltage, ideally instantaneous cut-off current can, in fact, there are generally a little time delay. Determine the amount of current cut-off delay, that is the reverse recovery time. Although it directly affects the switching speed of the diode, but not necessarily say that this value is small enough.

6. Maximum Power

Maximum power is applied across the diode voltage multiplied by the current flowing. This limit is especially important parameter for regulator diodes.

For more products information please check: http://www.kingtronics.com/diodes-rectifiers/

Different types of diodes have different parameters.We must understand the following main parameters:

1. Rated Forward Current

Rated forward current diode means T for long-term continuous permissible maximum forward current through. Because the current through the heating tubes will die, the temperature rises, the temperature exceeds the allowable limit (silicon tube of about 1 40 , germanium tube is about 90 ), the die will cause overheating and damage. Therefore, do not use more than diode forward current diode rated value. For example, the commonly used lN400l type germanium diode forward current rating of  lA.

2. Maximum Surge Current

The maximum inrush current is allowed to flow through the excess forward current. It is not a normal current, but the current moment, this value is typically about 20 times the rated forward operating current.

3. Maximum Reverse Voltage

Applied reverse voltage across the diode high music to a certain value, the tube will breakdown, loss of unidirectional conductivity. To ensure safely use, it provides maximum reverse voltage. 
For example, lN400l diode reverse voltage reverse voltage 50V, lN4007 for l000V.

For more products information please check: http://www.kingtronics.com/

I assume you know M7 can replace S1M/GS1M very well, we keep large stock of M7, ISO & SGS & RoHS certified, pls don't hesitate to ask for my price if you have relevant demands, the best offer in history will be supproted immediately.  Come to us with your rfqs, we're always at your service.

Besides, allow me recommend 4148 series stock, feel free to add them into your Christmas/New Year order plan, they'll be also delivered as soon as you demand. Cheers and hugs. ~ ~

Diode stock for Christmas/New Year:

M7 DO-214AC T&R RoHS MPQ: 5kpcs/reel  

LL4148 LL-34 T&R RoHS MPQ: 2.5kpcs/reel  

1N4148W SOD-123 T&R RoHS MPQ: 3kpcs/reel 

1N4148WS SOD-323 T&R RoHS MPQ: 3kpcs/reel

For more products information please check:

China top manufacturer here, since 1990, have 2 factories, produce active and passive components.

You may have many good suppliers like Bourns, Murata, Tocos, Vishay, AVX..., but I'm very confident to suggest you try our Kingtronics/Kt brand.

Our components are very popular in RussiaEurope, America & South Africa. I believe we can also help you exploit a very good market in your country. Are you interested?

An excellent supplier is the key to your business success, and we also hope for a fruitful cooperation with you. Call me or welcome to visit our website www.kingtronics.com

ISO 9001: 2008 manufacturer, 2 factories, ISO & UL & SGS certified

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.

 Kingtronics diodes M7 are used on Delphi & Bosch & Linear's products. We produce high quality!

M7 & LL4148 have big demand in the market, please help us promote Kingtronics most strong diode to your customers, OK ?
Please visit our website, and send us order & inquiry, OK? Thank you so much !
ISO, UL, SGS manufacturer, Kingtronics brand, New and Original diode.
Welcome to send us trial order or free samples request.
Diode M7 DO-214AC T&R RoHS            
Packing info: 5000pcs/reel  80kpcs per carton, 14kg/carton, size: 35*35*35cm
LL4148 LL-34 T&R RoHS               
Package info: 2500pcs/reel 150kpcs per carton, about 8kgs/carton, carton size: 38*36*20cm


Kingtronics International Company
Tel: +86 769 8118 8110
Web: www.kingtronics.com
Blog: www.kingtronics.cn ; www.m7diode.com
Facebook: http://www.facebook.com/pages/Kingtronics-International-Company/238450949594841

E-catalogue: http://www.kingtronics.com/pdf/leaflets.pdf
Diode M7 Leaflet:http://www.kingtronics.com/pdf/Kingtronics-M7-leaflet.pdf

ISO 9001:2008 certification: http://www.kingtronics.com/pdf/iso.pdf
Bridge rectifier UL certification: http://www.kingtronics.com/pdf/Bridge-rectifier1.pdf
Trimming potentiometer SGS certification: http://www.kingtronics.com/pdf/Trimming-potentiometer1.pdf
Dipped tantalum capacitors SGS certification: http://www.kingtronics.com/pdf/Dipped-tantalum1.pdf

Kingtronics/Kt brand, ISO, SGS & UL certified manufacturer, two factories since 1990

Extremely competitive prices, stable and high quality, very short lead time.
Trimming Potentiometer 3296, 3266, 3006, 3386, 3362, 3329, SMD C3305...
Radial Tantalum Capacitor
Radial Multilayer Ceramic Capacitor

Diode LL4148, M7, S1M, GS1M, BZV55C, BZX55C, 1N4007, 1N4148...
Bridge MB2S~MB10S, DB107, DB107S, GBU410, KBP210...
Transistor BC807-16/25/40, BC817-16/25/40, BC846A/B/C ~ BC850A/B/C, BC856A/B/C ~ BC859A/B/C, MMBT3904, MMBT3906...

Cross to Bourns, AVX, Kemet, Murata, Samsung, Nemco, BI, Vishay, Fairchild, Diotec...

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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