Kingtronics have very good quality for radial ceramic capacitors,  have ISO 9001:2008 certification. Here some features for your reference.

Class I capacitors: A typical class I capacitor will have a temperature coefficient of 30 ppm/°C. This will typically be fairly linear with temperature. Very high accuracy (~1%) class I capacitors are available (typical ones will be 5% or 10%). The highest accuracy class 1 capacitors are designated C0G or NP0.

Class II capacitors: A typical class II capacitor may change capacitance by 15% over a −55 °C to 85 °C temperature range. A typical class II capacitor will have a dissipation factor of 2.5%. It will have average to poor accuracy (from 10% down to +20/-80%).

Class III capacitors: A typical class III capacitor will change capacitance by -22% to +56% over a temperature range of 10 °C to 55 °C. It will have a dissipation factor of 4%. It will have fairly poor accuracy (commonly, 20%, or +80/-20%). These are typically used for decoupling or in other power supply applications.

There is a three digit code printed on a ceramic capacitor specifying its value. The value is given in picofarads (pF). A letter suffix indicates the tolerance:

C ± 0.25 pF M
D ± 0.5 pF P +100 −0%
J ± 5% S −20 +50%
K ±10% Z −20 + 80%

- Trimming Potentiometer 3296 3006 3386 3323 3329 3362 3266 3309 3590 3540 065 C3305 (SMD 3mm)...
- Diode rectifier: S1M, RS1M, SM4007 melf, BZV55C, UF4007, 1N4007S, 1N4007, 1N5399, RL207, 1N5408, 6A10, FR107, 1N4937, FR157, FR207, 1N5822....etc..
- Bridge rectifier: DB107, DB107S, MB10S, KBL410, KBU610, KBPC2510, KBPC3510, KBPC3510W......etc
- Radial ceramic capacitor cross AVX SR series, Murata RPE, Nippon THD series, Vishay K (Mono Cap ), Kemet C315-C350, Panasonics ECU-S ....
- Radial tantalum capacitor cross AVX TAP series, Kemet T350-T359, NIC NDTM, Nemco TB, Panasonic ECSF...

If you have inquiry, pls send to , we will be glad to quote for you! Thank you!

Rectifier diodes (large current)

Rectifier diodes are used in power supplies to convert alternating current (AC) to direct current (DC), a process called rectification. They are also used elsewhere in circuits where a large current must pass through the diode.

All rectifier diodes are made from silicon and therefore have a forward voltage drop of 0.7V. The table shows maximum current and maximum reverse voltage for some popular rectifier diodes. The 1N4001 is suitable for most low voltage circuits with a current of less than 1A.

Diode Maximum Current Maximum Reverse Voltage
1N4001 1A 50V
1N4002 1A 100V
1N4007 1A 1000V
1N5401 3A 100V
1N5408 3A 1000V

Do you buy Trimming Potentiometer? Come here!

Kingtronics are ISO 9001: 2008 maufacturer of Trimming Potentiometer 3296 3006 3386 3266 3590S 3329, we produce Trimming Potentiometer since 1990.

Please kindly visit our website:, you will find our ISO certification and SGS certification on website, besides, we put Trimming Potentiometer cross guide on website.

We can provide equivalent Trimming Potentiometer of Bourns, Murata, BI Technoly, Tocos, and Vishay.

RKT-3296W        BI 67W        Murata PV36W        Tocos: J9X
RKT-3266W        BI 64W        Murata PV37W
RKT-3386P         BI 72P         Murata PV34P         Vishay 63P
RKT-3590S         Bourns 3590S

You can find complete cross list through

As ISO 9001: 2008 manufacturer, Kingtronics produce Trimming Potentiometer since 1990.

We mainly focus on these part number: 3296 3006 3386 3266 3362 3329 3590S

Most of above are through-hole, please help me sell C3305, this is 3mm SMD trimmer.

Cross to:Bourns C3303 Alps: RH03ADC Citec: 3130 , Murata: PVZ3A Panasonic: EVM1SSW/X

A Zener diode is a special kind of diode which allows current to flow in the forward direction same as an ideal diode, but will also permit it to flow in the reverse direction when the voltage is above a certain value known as the breakdown voltage. A Zener diode exhibits almost the same properties, except the device is specially designed so as to have a greatly reduced breakdown voltage.

The Zener diode's operation depends on the heavy doping of its p-n junction allowing electrons to tunnel from the valence band of the p-type material to the conduction band of the n-type material.

All such diodes, regardless of breakdown voltage, are usually marketed under the umbrella term of "Zener diode".

Kingtronics have much better prices offer for below zener diode, especially BZX55C and BZV55C.

1/2W  BZV55C 2V7 - BZV55 C47    LL-34  Tape & Reel
1/2W  BZX55C 2V7 - 8V2    DO-35 Bulk or Ammo
1W   1N4729A - 1N4756A   DO-41 Bulk or Ammo
1/2W  ZMM2V4 - ZMM47    LL-34  Tape & Reel
1W   ZM4729A - ZM4756A   LL-34Tape & Reel

Please check our website, you can download all PDF datasheet...

Zener diodes are used to maintain a fixed voltage. They are designed to 'breakdown' in a reliable and non-destructive way so that they can be used in reverse

to maintain a fixed voltage across their terminals. The diagram shows how they are connected, with a resistor in series to limit the current.

Zener diodes can be distinguished from ordinary diodes by their code and breakdown voltage which are printed on them. Zener diode codes begin BZX... or BZY...

Their breakdown voltage is printed with V in place of a decimal point, so 4V7 means 4.7V for example.
Zener diodes are rated by their breakdown voltage and maximum power:

  • The minimum voltage available is 2.4V.
  • Power ratings of 400mW and 1.3W are common.

Kingtronics high-energy tantalum capacitor is fully-sealed with polar radial leads and represents a new level of technology.
It's characterized by excellent electrical performance, high reliability, long usage life and high energy density in unit volume.

Application Construction:

NPO: Temperature compensation type, have little or no change in
capacitance with variation in temperature. Hence, they are used in
radio-frequency oscillators, precision timing circuits, ultra stable
amplifiers, etc.
X7R: Temperature stable type for by-pass and decoupling in radio
and television receivers, computers servo systems. Audio tone, and
coupling, etc., where moderate capacitance variations are permissible
and dissipation factor is not critical.
Z5U/Y5V: General type for by-pass and filtering applications.

Type: b, C1, , C2(inside kinked), C3...
standard LL:10mm+/-1mm. Max LL:25mm

As you know, general diode rectifier M7, 1N4007 and switching diode LL4148 are very common and popular in the market. This year, we win really good diode orders.

To support customers better, Kingtronics prepare stocks on offer. So the price and lead time are very attractive.

Pls note all the parts are NEW and Original. First come, first served. We will replenish stock once use out. Do you have any order plan now?

Stock status:

Axial Diode 1N4007 DO-41 T&R RoHS. 1,500,000pcs in stock (US$ 0.0057/pc)

SMD Diode M7 DO-214AC T&R RoHS. 550, 000pcs in stock

Switching Diode LL4148 LL-34 T&R RoHS. 2,000,000pcs in stock

Pls visit our website for details.

In 1938, German scientist Walter Schottky developed a diode having a metal to semiconductor junction.

A Schottky diode, like other solid-state diodes, conducts electrical current in one direction.

It can operate at higher speeds than typical silicon diodes.


Small pockets of electric charge build up in a typical silicon diode, slowing down its ability to turn current off.

A Schottky diode can operate hundreds of times faster since it avoids build up of electric charges.

It also has less than half the voltage drop conducting in the forward direction than a silicon diode.


Engineers use Schottky diodes in very high-frequency circuits, such as microwave transmitters.

Schottky diodes also see use in switching power supplies and solar battery charging systems.

Kingtronics produce and sell schottky diode 1N5817-1N5819, 1N5820-1N5822. if you have inquiry, pls send email to

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

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