Kingtronics Blog

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。

Kingtronics SMD ECAP can make replacement for following Brand with more excellent lead time and price!

Kindly share your inquiry with us to help you cost down, welcome contact us for more information.

Ecap website: http://www.ecap.hk/

Kingtronics Aluminum Electrolytic Capacitor Factory: https://www.youtube.com/watch?v=QEPG2WRuHsk

Cross ref.: http://www.ecap.hk/download/Kingtronics-SMD-Aluminum-Electrolytic-Capacitors-Cross-Reference.html

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Especially we are almost the most competitive supplier of SMD aluminum electrolytic capacitor in global market, come to us for enjoy more benefits earlier.

Kindly remind Kingtronics will have Easter holidays from 19th-22nd April. If you have any queries, please feel free to email us and enjoy the 5 stars service !

Marketing information for Murata, come to us if u meet this problem.

1>Murata 0402 series SMD mlcc will be discontinued Soon

Chip Capacitance / 1uF (105) ±10% 6.3V NRND Material (will be discontinued)
Part No: GRM155R60J105KE19D

Chip Capacitance / 100nF (104) ±10% 16V NRND Material (will be discontinued)
Part No: GRM155R71C104KA88D

Chip Capacitance / 4.7uF (475) ±10% 6.3V NRND Material (will be discontinued)
Part No: GRM188R60J475KE19D

Chip Capacitance / 470pF (471) ±10% 50V NRND Material (will be discontinued)
Part No: GRM188R71H471KA01D

2>Kingtronics could offer u better prices for ceramic trimmer capacitors within 2-3 weeks lead time

With the approaching of new month, to thanks for the support of all our regular and new customers,
Kingtronics team wish to share a good news that we have new round break down offer for SMD Aluminum Electrolytic Capacitor, 20%+ lower than ever before for most values.

Under the tough market background, it should be a good chance for both us to promote the popular series with aggressive prices.
Would you like to take this opportunity to try win more market share together with Kingtronics ?

Quartz crystals is often referred to as xtals and they are used to provide very high Q resonant elements for oscillators and filters. They rely on the remarkable properties of quartz for its operation. When placed into an electronic circuit a quartz crystal acts as a tuned circuit.

Kingtronics QKT-5032SMD Quartz Crystal ideal for is an industry standard crystal package with excellent heat resistance, high precision. Contain Pb in metal seam seal exempted by RoHS directive with four connection pads on the base. With a broad frequency range from 8.000 MHz to 150.0000 MHz 
The combination of energy efficient operation and low cost benefits make QKT-5032SMD the ideal solution for telecommunications, camera, wearable device, PDA, GPS, HDD, DSN, Smart factory, AV equipment, PC, Server, and etc.

Kingtronics quartz crystal, xtal resonators are available in many sizes and formats to suit the requirements of most applications. Any enquiry please contacts us by info@kingtronics.com
Kingtronics QKT-5032SMD PDF datasheet download link:
http://kingtronics.com/pdf/QKT-5032SMD.pdf

Following is XTAL quartz crystal 5032SMD common frequency: