Kingtronics Blog

•Good shock measures to ensure the Quartz Crystal don’t fall to the ground during use.

• When storing crystals, anti-extrusion measures should be prepared and stored in a dry and ventilated place, avoid damp Quartz Crystal.

• When the solder, solder temperature is not too high, the role of the solder time not too long, so as not to produce an unstable change occurs within the Quartz Crystal.

• Ensure two-pin solder points are not connected, or will lead to Oscillator is stopped.

• The shear pin, should pay attention to the effects of mechanical stress.

• Solder, it should be cleaned to prevent the insulation resistance don’t meet the requirements.

We are HK based ISO manufacturer producing active components under our own registered brand kingtronics since 1990.

Here share a good news with you. Now we can deliver these items within 2 weeks if your order quantity is under 200kpcs/lot.

For exact specifications, you could pls view on our website. Welcome to send us inquiry for below parts.

Switching Diode
1N4148W SOD-123 T&R RoHS
1N4148WS SOD-323 T&R RoHS

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

Transistor
BC807 SOT-23 T&R RoHS
BC817-40 SOT-23 T&R RoHS
846B SOT-23 T&R RoHS
847B SOT-23 T&R RoHS
847C SOT-23 T&R RoHS
857C SOT-23 T&R RoHS

MMBT3904 SOT-23 T&R RoHS
MMBT3906 SOT-23 T&R RoHS
MMBT8050D SOT-23 T&R RoHS
MMBT8050C SOT-23 T&R RoHS
MMBT8550D SOT-23 T&R RoHS
MMBT8550C SOT-23 T&R RoHS
MMBT9013H SOT-23 T&R RoHS
MMBT9014C SOT-23 T&R RoHS
MMBT9014D SOT-23 T&R RoHS
MMBT9018H SOT-23 T&R RoHS
MMBT8050D(1.5A) SOT-23 T&R RoHS
MMBT8050C(1.5A) SOT-23 T&R RoHS
MMBT8550D(1.5A) SOT-23 T&R RoHS
MMBT8550C(1.5A) SOT-23 T&R RoHS
MMBT945L/O/P/Y SOT-23 T&R RoHS

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!

During past years of 2012 & 2013,  we Kingtronics exhibited at Expo Electronica in Moscow, Russia.

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...  

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/

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

A good supplier should be equiped with competitive price, fine quality, quick lead time & nice packing.

Since 1990, Kingtronics owns 2 ISO factories, trimmer output is 5kkpcs/mth, faster L/T & better price than Bourns, Vishay, Murata... 

That's why we gain more and more customers from Europe, America, South Africa, Asia.

Saving cost means profit increase. All we can support is what you want. Why not move forward together~!

RKT-trimming potentiometer (ISO/SGS certified since 1990)

* RKT-3006P, W, Y
* RKT-3266W, X, Y, Z, P 
* RKT-3269W, X, P
* RKT-3296W, X, P, Y, Z 
* RKT-3323P, C, R, S, W, V
* RKT-3329
* RKT-3362P, H, R, U, M, S, W, X, Z
* RKT-3386B, C, H, J, S, W, X, Z 
* RKT-3540S-1 
* RKT-3590S-2
* RKT-C3305

Datasheet download here---> www.kingtronics.com/trimming-potentiometers/ 

Spring Festival will come soon. Do you need new supplier for electronic component?

We're ISO manufacturer and produce electronic components since 1990 with mature technology. We can make equivalence to Vishay, Murata, BI, Bourns....

I know currently you have many good supplier, but if you choose us, you will worth it.

Our high quality, unbeatable prices and competent service can help you get good reputation from your market and win many orders.

We look forward to your RFQs, and Kingtronics can support you free samples.

Active Components:
Diode rectifier: Diode M7, LL4148, S1M, GS1M, SM4007, UF4007, 1A7, 6A10, 1N4937, 1N5343B...
Bridge rectifier:  ABS2-ABS10, DB107, MB10S, W04M, KBL410,  KBPC2510,  KBPC3510,  GBU410, GBJ810...
Zener diode: BZV55C, BZX55C, BZX84C, BZX85C, 1N4727A-1N4761A, ZM4728 ~ZM4761, ZMM1 thru ZMM75...
Transistor: BC807, BC817, BC846, BC847, BC848, BC849, BC850, BC856, BC857, BC858, BC859
Surge arrester

Passive Components:
MKT: Radial multilayer ceramic capacitor.
LKT: Chip multilayer ceramic capacitor
HKT: High voltage multilayer ceramic capacitor
TKT:  Dipped tantalum capacitor.
CKT: Chip tantalum capacitor
RKT: Trimmer potentiometer 3296 3006 3386 3266 3362 3329 3590S SMD C3305...
QKT: Quartz Crystal HC49S, HC49U, HC49SMD.

Wishing you peace, joy and happiness in 2015!