Kingtronics Blog

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:

Quartz Crystal also known as Quartz Crystal Oscillator. That was accomplished by means of "Piezoelectric" effect.
That is "Supply Voltage", Kingtronics common voltages are 1.8V, 3.3V, 5.0V.
The semiconductor devices and resistance capacitance element worked together, could constitute a Quartz Crystal Oscillator. 

Quartz Crystal Applications:
1, QKT-HC49U (HC-49U) suitable for electronic products with broad spaces such as communications equipment, televisions, telephones, electronic toys;
2, QKT-HC49U/S (HC-49U/S) is suitable for all kinds of space height restrictions thin and small electronic equipment and products;
3, QKT-HC49 SMD (HC-49U/S SMD) prevail surface mount products, applicable to all types of ultra-thin, small computers and electronic devices;
4, 3*8 Tuning fork Cylindrical quartz crystal resonators suitable for space-constrained timing frequency stabilization of electronic products such as timers, electronic clock, calculator, etc.

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.
We produce millions pieces of Quartz Crystal and SMD Oscillators monthly, the volume is keep increasing. Free samples for testing.
For more information, please visit: www.kingtronics.com/quartz-crystals/

Kingtronics wish everybody Happy Lantern Festival with your families and friends  O(∩_∩)O~

In the afternoon, our Kingtronics everybody eat tuanyuan.

It is small dumpling balls made of glutinous rice flour with rose petals, sesame, bean paste, jujube paste, walnut meat, dried fruit, sugar and edible oil as filling.
You can drop these balls into boiling water and cook them for about 8 minutes until they float. Then you can eat them.
Tangyuan in Chinese has a similar pronunciation with "tuanyuan”.
The reason that soup dumpling is popular, because they have a meaning of reunion. Traditionally, people eat Tangyuan on the night of the Lantern Festival, because it symbolize family unity and happiness.

At night , people will try to solve the puzzles on the lanterns.

Here share photo, haha, good enjoy them!

We will be absent this March, since there is much business to handle with after Chinese Spring Festival.

Pls feel free to contact with us for better support, we are fighting for being more customers' first choice.

Active Components Datasheet:
Diode rectifier: M7, LL4148, S1M, GS1M, SM4007, UF4007, 1A7, 6A10, 1N4937...
Zener diode: BZV55C,BZX55C,BZX84C,BZX85C, 1N4727A-1N4761A, ZM4728-ZM4761,
ZMM1-ZMM75...
Bridge rectifier: DB107, MB10S, KBL410,  KBPC2510,  KBPC3510,  GBU410, GBJ610...
Transistor: BC807,BC817,BC846-BC850,BC856-BC859,MMBT3904, MMBT3906, MMBT8050...
Surge arrester: 2-Electrode arresters, 3-Electrode arresters

Passive Components Datasheet:
MKT: Radial multilayer ceramic capacitor
AKT: Axial Multilayer Ceramic Capacitors
LKT: Low voltage chip Chip multilayer ceramic capacitor
HKT: High voltage chip multilayer ceramic capacitor
TKT: Dipped tantalum capacitor
CKT: Chip tantalum capacitor
RKT: Trimmer potentiometer 3296 3006 3386 3266 3362 3329 3590S C3305 3323 3309 065...
QKT: Quartz Crystal HC49S, HC49U, HC49SMD, OSC3225, OSC7050...  

Ladies and Gentlemen, please take your attention to the new year components competition, who will be the champion?

We will see soon!

Good quality, service, price, delivery time, package... Just please choose Kingtronics!  

Strong parts: 
Diode S1M, SM4007, M7, LL4148, BZV55C, Bridge MB2S-10S, DB107S, Transistor BC847, 846...
Radial MLCC capacitors and Tantalum Capacitors; Potentiometer 3296 3006 3386 3329 3540...

Trimmer potentiometers also known as semi-variable potentiometer, They are used to measure or divide voltages, and to protect or control circuits.

Classification by structure:
Lap, Multi-turn(Kt Trimming Potentiometer: RKT-3540S,RKT-3590), Single-Joint, Double, Multi-tap Type, With Switch, Locking, Non-Locking Type, SMD Potentiometer.

Kingtronics potentiometers (Kt trimming potentiometer) include following part number: 
RKT-3006, RKT-3266, RKT-3296, RKT-3323, RKT-3329, RKT-3362, RKT-3386, 
RKT-3318, RKT-3309, RKT-065, RKT-105H, RKT-C3305, RKT-3540S, RKT-3590.

For more information, please visit http://www.kingtronics.com/trimming-potentiometers/

In January 2015, in order to meet customers demands, we prepared new Quartz Crystals and Oscillators samples to SGS lab.
After two weeks, we get the updated new RoHS 2.0 Test Report .

Below is the full list of our Kingtronics RoHS report, please have a quick view.

Active Electronics Components
1. UL certification for bridge rectifiers
2. RoHS 2.0 for diode rectifier, and specially Reach 2.0 for diode M7 ( also called SMD 1N4007)

Passive Electronics Components
1, CKT---Chip Tantalum Capacitors RoHS 2.0 certificated
2, TKT---Dipped Tantalum Capacitors RoHS 2.0 certificated
3, QKT--- Quartz Crystals and Oscillators RoHS 2.0 certification 
4, MKT, AKT --- Monolithic ceramic capacitors/Axial Monolithic Ceramic capacitors/ Axial Color Ring Capacitors/ SMD Multilayer Ceramic capacitors/ Ceramic Capacitors

Above products are tested not including 155 substances of very high concern(SVHC) under Regulation(EC) No 1907/2006 of Reach.

Kingtronics products are all with RoHS certifications. Please feel free to contact with us and test our samples.

Tantalum Capacitors enjoy low leakage current characteristics; Better filtering let the leakage current extremely low.

Nearly no failure mode to tantalum capacitors, as they have self-healing capability, life time is more stable compared with Aluminum electrolytic, which only has 1000-2000Hours.

Kingtronics produce and sell Radial and Chip Tantalum Capacitors, Please refer to the following table and link : www.kingtronics.com/tantalum-capacitors/

Hertz (Hz)
The basic unit of measurement of frequency. It is a measurement used to denote one complete occurrence of an event in one second.
The frequency of a crystal is measured in megahertz (MHz) or kilohertz (kHz). In Kingtronics we usually usd KHz.

Frequency 
Measured in Hertz (Hz), it is a periodic repetition of an event within a unit of time. 
In an electrical circuit, it is the number of times a resonator plate oscillates or vibrates in one second. The most common herts for Kingtroncis QKT is 32.768KHz

Frequency Tolerance
Often called Calibration Accuracy, it is the amount of frequency deviation from the specified nominal frequency at room temperature (25°C). 
This term is expressed as a minimum and maximum percent (%) or parts per million (ppm). Kingtronics can provide -20℃~+70℃, -40℃~+85℃, -10℃~+60℃

Load Capacitance
A capacitance, specified in picofarads (pF), presented to the crystal. 
The parallel load resonant frequency (FL) is a function of the load capacitance.

For more details, please refer to below link, thank you.
www.kingtronics.com/quartz-crystals/
www.abracon.com/Support/qtzcry_glossary.pdf
www.abracon.com/Support/qtzcryoscil_glossary.pdf