Kt Kingtronics The Working Principle of Quartz Crystal

Quartz crystal oscillator is a quartz crystal resonator made of quartz material, commonly known as crystal oscillator. 

It plays the role of generating frequency, has stability and good anti-interference performance, and is widely used in various electronic products.

The structure of the quartz crystal oscillator (crystal oscillator for short) is a resonant device made of the piezoelectric effect of a quartz crystal (structured body of silicon dioxide). 

Its basic structure is roughly as follows: Cut a thin slice at a certain azimuth angle (referred to as a wafer, it can be square, rectangular, or circular, etc.), coat silver layers on its two corresponding surfaces as electrodes, and solder a lead wire on each on the pins, coupled with the package shell constitutes a quartz crystal resonator, referred to as quartz crystal or crystal, crystal oscillator. 

Its products are generally packaged in metal shells, but also in glass, ceramic or plastic packages.

Due to AKM fire in October, 2020, many suppliers are not accepting new order for Quartz crystal oscillator.

But Kingtronics team can help you, please feel free to share us your request.

Kt Kingtronics Tell You Current Market Situation for TCXO

Japan's Asahi Kasei (AKM) semiconductor factory broke out fire on 21st October and ceased production. 

The impact of the fire on the supply and performance is still unclear. Many customers are worried about the TCXO L/T and production status . 

Kingtronics can support you steady L/T around 3~5 weeks with RoHS certified.. welcome your inquiry! 

Quartz Crystals
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	11.05x4.65mx3.38mm	3.200MHz to 100.000 MHz
QKT-HC49SMD	SMD Quartz Crystal	12.2x4.5x4.0mm	3.200MHz to 100.000 MHz
QKT-1612SMD	SMD Quartz Crystal	1.6x1.2mm	24.000 MHz to 48.000 MHz
QKT-2016SMD	SMD Quartz Crystal	2.0x1.6mm	20.000 MHz to 54.000 MHz
QKT-2520SMD	SMD Quartz Crystal	2.5x2.0mm	12.000 MHz to 54.000 MHz
QKT-OSC2520	SMD Oscillator	2.5x2.0mm	1.000MHz to 64.000 MHz
QKT-OSC3225	SMD Oscillator	3.2x2.5mm	1.000MHz to 125.000 MHz
QKT-OSC7050	SMD Oscillator	7.0x5.0mm	1.000MHz to 150.000 MHz
QKT-2060DIP	Tuning Fork Crystal	Tuning Fork 2060	30KHz to 200KHz
QKT-3080DIP	Tuning Fork Crystal	Tuning Fork 3080	30KHz to 200KHz

Kt Kingtronics Quartz Crystals and Oscillators Replace Murata XRCJK Series

Murata XRCJK series (Ceramic Resonators/Crystal Units/MEMS Resonators) are to be discontinued.

Kt Kingtronics QKT-3225SMD series can cross reference for Murata XRCJK series with same dimension of 3.2x2.5mm and with broad frequency range of 12.000 MHz to 54.000 MHz.

Wide range of Applications for QKT-3225SMD series:
-Bluetooth Wireless Communication Sets
-HDD, DSN, PDA, GPS
-Gigital Tuner, Wireless LAN and Mobile Phones

Welcome your inquiry to get first-hand information!

Kt Kingtronics Precautions for the Selection of Some Components

1. Capacitor
Chip capacitors and other components in the package of 1206 and above should be used with cautions, there is a practical risk in the welding process.
Ceramic capacitors use NPO (C0G) and X7R two types which temperature coefficient control is better. Tantalum capacitors which rated voltage is lower than 25V are preferred. The forming voltage of the Aluminum Electrolytic capacitors should be 1.2 to 1.4 times of the rated voltage.

In general, the comparison of ESR values of various capacitor: aluminum capacitor > tantalum capacitor > ceramic capacitor; 
The ripple current should not exceed the specifications under the high temperature, otherwise it will affect the service life; the limit value of each package is not recommended.

1.电容
慎用1206及以上封装的贴片电容等器件，焊接过程中有实效风险.
陶瓷电容选用NPO（C0G）和X7R这两类，温度系数控制较好。钽电解电容一般建议使用额定电压不超过25V产品。铝电解电容一般选取形成电压是额定电压的1.2到1.4倍。
一般情况下，各种电容ESR比较：铝电容＞钽电容＞陶瓷电容；注意高温下时的纹波电流不要超出使用规格，否则会影响使用寿命；每种封装的极限值不建议使用.

2. Diode & triode
When selecting the diode & triodes, pay attention to whether the following parameters are sufficient in the circuit to prevent the risk of damage.
Reverse breakdown voltage Vbr, reverse repeated operating voltage Vrwm, maximum average forward average current If, Instantaneous forward voltage Vf, reverse recovery time Trr, thermal resistance Rjc, maximum junction temperature Tjm.

2.二三极管
二三极管选型时注意以下参数在电路中是否够用，防止损坏风险。
反向击穿电压Vbr，反向重复工作电压Vrwm，最大平均正向平均电流If，正向压降Vf，反向恢复时间Trr，热阻Rjc，最高节温Tjm。

3. Crystals and crystal oscillators
Try to use the chip package. The largest shipment in the industry is 3.2mmx2.5mm (3225) package; 
the AT cut fundamental frequency is selected, the preferred range is 12MHz~15MHz; a crystal oscillator generally only drives one device.

3.晶体和晶振
尽量选用贴片封装，行业内目前出货量最大的是3.2mmx2.5mm(3225) 封装；
选择AT切基频，优选范围12MHz~15MHz；一个晶振一般只驱动一个器件。

Kt Kingtronics Updated YouTube Link

Thank you guys for subscribing our YouTube Channel. Now we have updated link for YouTube https://www.youtube.com/c/Kingtronicskt

You can get the first hand news for our products and production line via it.

Every piece of your suggestion is our motivation to keep working hard on improving ourselves!

Kingtronics Manufacturing 3MM Ceramic Trimmer Capacitors Replace Murata TZC3 https://youtu.be/YxWBVLaD6tM

Kingtronics Kt Radial Aluminum Electrolytic Capacitors Manufacturing Process https://youtu.be/o3bQ4Vj_33A

Kingtronics MLCC Multilayer Ceramic Capacitors Factory https://youtu.be/7J2jbfXuoc4

Kt Kingtronics Diodes and Rectifiers Best Offer All the Time https://youtu.be/Bp1th7sw4w4

Kt Kingtronics Order Plan before Chinese Spring Festival

As you know every year approaching the Christmas season will get busy with factories, so does Chinese New Year time.

The coming Chinese New Year also known as Lunar New Year or Spring Festival.
This is a time for family reunion, and is considered the most important part in the Chinese New Year celebration.

In 2019, the festivity will be on 5th-7th Feb., our factory will have holidays from late January till mid-February.
The production lead time might be longer once place order within or after CNY.

Thus please don’t hesitate to advise us the order confirmation soon, and arrange production without delay. : )

Good day !

More detail:http://kingtronics.com/

Kt Kingtronics Closes on Mar.30th-Apr. 02nd for Easter, Apr. 05th for Tomb Sweeping Day.

Hope this greeting find you well. ~!～

Kingtronics closes on Mar.30th-Apr. 02nd for Easter, Apr. 05th for Tomb Sweeping Day.  

Never hesitate to inform us if anything we can help. ^&^

Kingtronics complete production lines: 

DIP and SMD Tact Switches

Active components:

Bridge Rectifiers, Diodes & Transistors

Axial and SMD Gas Tube Surge Arresters

Passive components:

Aluminum Elec. Capacitors

Radial/Axial Multilayer Ceramic Capacitors and Tantalum Capacitors

SMD 3mm Ceramic Trimmer Capacitor

Trimming Potentiometers

Quartz Crystals and Oscillators