The whole Kingtronics members feel much grateful for all customers' long-term support. Wish lasting prosperity and success.


Hereby we bring some news of adjustments on the production line, some parts will be discontinued since the raw marterial is hard to be purchased in the market, anyway repeat order can be negotiated case by case, we try best to continue supply.

Discontinue QKT-HC49U Leaded Quartz Crystal 11.05x4.65x13.46mm 1.8432MHz to 200.000MHz

Other crystals & oscillators can still be supplied: http://www.kingtronics.com/quartz-crystals/

Discontinue Diode Rectifier 1N5399B, 1N5341B

Other diodes can still be supplied: http://www.kingtronics.com/diodes-rectifiers/

Let's expect more communication on cooperation, never hesitate to seek timely support from us.

Quartz Crystal Advantages:
1, Good stability, small changes;
2, Good accuracy, high precision;
3, Low power consumption, small excitation power;
4, Fixed (non-adjustable).

Quartz Crystal Structure:

When you order Quartz Crystal Resonator, you have to at least keep 5 essential aspects.
Package Type,  Frequency, Load Capacitance, Frequency Tolerance,Operating Temperature

Examples : 
QKT-HC49U, 16.000MHz,  20pF, +/-30ppm, -20~+70
QKT-HC49S, 12.000MHz,  20pF, +/-20ppm, -10~+60
QKT-HC49SMD, 10.000MHz, 20pF, +/-30ppm, -20~+70
QKT-3225SMD, 26.000MHz, 20pF, +/-10ppm, -20~+70

Free samples are available and welcome your enquiry and test our samples.

If you need more products information, please check : 
www.kingtronics.com/quartz-crystals/QKT-HC49S.html

Kingtronics offers passive leaded quartz crystal HC49U, HC49S, SMD quartz crystal HC49SMD and 3225 SMD Crystals.
We also produce active 3225, 5032, 5070 SMD Oscillators.

The passive quartz crystal are ideally suited designed for Bluetooth wireless communication sets, HDD, DSN, PDA,GPS,Digital Tuner, Wireless LAN and mobile phones. 
The Active SMD Oscillators are ideally suited for disc-drives, NB, Networking, GPS/Navigation, BlusTooth, Ethernet, ADSL, VDSL, Fiber chaneel hand-held electronics products. 

Kingtronics rapid response and in depth technical support is exceptional. You will find our highly skilled, experienced sales representatives satisfactory.

Quartz Crystal Resonator and Crystal Oscillator

Kingtronics P/N

Quartz Crystal

Size

Frequency Range

QKT-HC49U

 Leaded Quartz Crystal

 11.05x4.65x13.46mm

 1.8432MHz to 200.000MHz

QKT-HC49S

 Leaded Quartz Crystal

 11.05x4.65mx3.7mm

 3.200MHz to 90.000 MHz

QKT-HC49SMD

 SMD Quartz Crystal

 11.35x4.7x3.8mm

 3.200MHz to 90.000 MHz

QKT-3225SMD

 SMD Quartz Crystal

 3.2x2.5mm

 12.000 MHz to 54.000 MHz

QKT-OSC3225

 SMD Oscillator

 3.2x2.5mm

 1.000MHz to 125.000 MHz

QKT-OSC5032

 SMD Oscillator

 5.0x3.2mm

 1.000MHz to 125.000 MHz

QKT-OSC7050

 SMD Oscillator

 7.0x5.0mm

 1.000MHz to 150.000 MHz

If you need more products information, please check : 
www.kingtronics.com/quartz-crystals/QKT-HC49U.html

Kingtronics offers leaded quartz crystal HC49U, HC49S and SMD quartz crystal HC49SMD. The quartz crystal market, in general, requires hands on customer service.

Kingtronics rapid response and in depth technical support is exceptional. You will find our highly skilled, experienced sales representatives satisfactory.

More information please visit: http://www.kingtronics.com/quartz-crystals/

Quartz Crystals General Information

Quartz Crystals

Kingtronics P/N

Quartz Crystal

Size

Frequency Range

Datasheet

QKT-HC49U

Leaded Quartz Crystal

11.05x4.65x13.46mm

1.8432MHz to 200.000MHz

↓ Download PDF

QKT-HC49S

Leaded Quartz Crystal

11.05x4.65mx3.7mm

3.200MHz to 90.000 MHz

↓ Download PDF

QKT-HC49SMD

SMD Quartz Crystal

11.35x4.7x3.8mm

3.200MHz to 90.000 MHz

↓ Download PDF

Kt Kingtronics offers leaded quartz crystal HC49UHC49S and SMD quartz crystal HC49SMD. The quartz crystal market, in general, requires hands on customer service. Quartz crystals are manufactured for frequencies from a few tens of kilohertz to tens of megahertz. More than two billion (2×109) crystals are manufactured annually. We also stock crystals in most popular package styles, frequencies and specifications for quick delivery.

49USMD crystals are low profile surface mount crystals with the same footprint as standard HC49 and HC49-4H crystals. 49USMD crystals are ideal for use in low cost, mass-market applications but are also able to be produced to close tolerances when required. With a broad frequency range from 3.200MHz to 90.000 MHz, the HC49SMD can serve as a low cost solution in virtually any application or market. The HC49SD is available in surface mount (SMD) packaging only.

quartz crystal resonator depends on the piezo-electric effect to work. This effect converts a mechanical stress in a crystal to a voltage and vice versa. In this way the piezo-electric effect converts the electrical impulses to mechanical stress which is subject to the very high Q mechanical resonances of the crystal, and this is in turn linked back into the electrical circuit.

The quartz crystal can vibrate in several different ways, and this means that it has several resonances, all on different frequencies. Fortunately the way in which the quartz crystal blank is cut from the original crystal itself can very significantly reduce this. In fact the angle of the faces relative to the original crystal axes determines many of its properties from the way it vibrates to its activity, Q, and its temperature co-efficient. There are three main ways in which a crystal can vibrate: longitudinal mode, low frequency face shear mode, and high frequency shear. A cut known as the AT cut used for most crystals used in traditional radio and electronics circuits uses the high frequency shear mode.

Vibrational modes of a quartz crystal resonator
(For the sake of clarity, the movements have been greatly exaggerated)

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

About

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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