Kingtronics Blog

Kingtronics GKT-VW Series Aluminum Electrolytic Capacitors（Kt SMD E Cap） are a revolution in size and performance. The GKT-VW has updated that [Kt] logo mark for diameter 4mm is [K].The AEC-Q200 qualified capacitors use advanced foil technology allowing for a smaller case size while delivering the same performance of legacy capacitors.

Features:
Designed for surface mounting on high density circuit board
ISO/RoHS certified quality
Long load life: 10000H
Operating temperature range: -40℃~+105℃
Wide range capacitance: 1uF - 1000uF
Voltage range: 6.3V - 450V.DC
Reflow soldering is available
Available for high density surface mounting
High stability and reliability

These kinds of Kt SMD E Cap products can be found in DC to DC Converter, Inverter and Rectifier Circuits. Automotive Industries, Power Suppliers, Industrial LED Lighting, and Telecom Infrastructure are also involved.
Kindly please check more items and datasheet from below links:
http://kingtronics.com/pdf/GKT-VW-105C-SMD-Aluminum-Electrolytic-Capacitors.pdf

Kingtronics has received lots of inquiries for tantalum capacitor for couples years, which some customers use in Automobile!

Can’t wait to tell the whole world we could reach even better offer now !

More confidently that our update new price with 10%+ lower comparing with some popular global brands based on same great quality.

Don’t hesitate to share inquiry & we look forward to serving you in Kingtronics soon.

Kt Kingtronics produces high quality product of GKT-VZ SMD Aluminum Electrolytic Capacitors（Kt SMD E Cap） with attractive price and stable supply. We recently updated the "Kt"or"K" logo in the produces. Come and find out more information about Kingtronics GKT-VZ SMD E Cap.

Features:
Designed for surface mounting on high density circuit board
Comply with the RoHS directive
Long load life: 1000-2000H
Low impedance with temperature range: -55℃~+105℃
Wide range capacitance: 1uF - 4700uF
Voltage range: 6.3V - 50V.DC
Various dimensions: 4*5.4mm - 16*16.5mm

Kingtroncis GKT-VZ SMD Aluminum Electrolytic Capacitors, applications include Automotive Power, Industrial LED Lighting, and Telecom Infrastructure. It also applied to In-Vehicle Electric Equipment, and also can support the Anti-Vibration Type, High-Definition Television, Digital Set-Top Boxes, LCD, and Car DVD.
Kindly please check more items and datasheet from below links:
http://www.kingtronics.com/pdf/GKT-VZ-105C-SMD-Aluminum-Electrolytic-Capacitors.pdf

Dear valued customer,

Are you looking for Precision Potentiometer RKT-3540 and RKT-3590 ?
Kingtronics could make replacement of Bourns with much more competitive prices and fast lead time

No	Kingtronics RKT-Trimming potentiometer
1	RKT-3590-102-R  (1k Ohm)
	Or (202/502/103/203/503/101/201/501)
	(2K, 5K,10k,20k, 50k,100, 200, 500 ohm)
2	RKT-3590-104-R (100k Ohm)
3	RKT-3540-102-R  (1k Ohm)
	Or (202/502/103/203/503/101/201/501)
	(2K, 5K,10k,20k, 50k,100, 200, 500 ohm)
4	RKT-3540-104 (100k ohm)

Lead time: 4-7 weeks
Product video: https://www.youtube.com/watch?v=PByDraT2Iww

More values we can produce:

RKT-3006 3/4" (19 mm) Rectangular Trimming Potentiometer
RKT-3266 1/4" (6 mm) Square Trimming Potentiometer
RKT-3296 3/8" (9 mm) Square Trimming Potentiometer
RKT-3323 1/4" (6 mm) Square Trimming Potentiometer
RKT-3329 1/4" (6 mm) Round Trimming Potentiometer
RKT-3362 1/4" (6 mm) Square Trimming Potentiometer
RKT-3386 3/8" (9 mm) Square Trimming Potentiometer
RKT-3309 9 mm Through-Hole Cermet Consumer Trimming Potentiometer
RKT-3540S Precision Potentiometer (Multiturn)
RKT-3590 Precision Potentiometer (Multiturn)
RKT-C3305 Trimming Potentiometer-3mm SMD
RKT-065 Phenolic Consumer Trimming Potentiometer

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。

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

3MM ceramic trimmer capacitor is the parts that its capacitance can be changed freely, which is mounted directly on the printed circuit board with a provision to vary its value using a small screwdriver.

Murata TZS2 series (ultra-small and thin type with external dimensions of 2.2(W) x2.7 (L) x0.95 (H) mm) have been discontinued and have not competitor sell the same product. KKT series can cross reference when users change the PCB pattern size to 3MM. KKT series are high durability from vibration, dust, moisture and flux, which is designed for reflow soldering. Small size with external dimension of 3.2(W) x 4.5(L) x 1.5(T) mm

KKT SMD 3mm Chip Ceramic Trimmer Capacitor Applications:
Car audio systems                                   Hybrid ICs
Remote keyless entry systems                 Surveillance cameras
Burglarproof devices                                  Entry phone

Capacitance (pF MAX)	Murata		Kingtronics
	Part Number	L x W (size)	Part Number	L x W (size)
20pF	TZS2R200A001B00	2.2(W)x2.7(L)x0.95(H)mm	KKT-320TR (Pink)	3.2(W) x 4.5(L)   x 1.5(T)mm
20pF	TZS2R200A001R00	2.2(W)x2.7(L)x0.95(H)mm	KKT-320TR (Pink)	3.2(W) x 4.5(L) x 1.5(T)mm
6pF	TZS2Z060A001B00	2.2(W)x2.7(L)x0.95(H)mm	KKT-306TR (Blue)	3.2(W) x 4.5(L) x 1.5(T)mm
6pF	TZS2Z060A001R00	2.2(W)x2.7(L)x0.95(H)mm	KKT-306TR (Blue)	3.2(W) x 4.5(L) x 1.5(T)mm
10pF	TZS2Z100A001B00	2.2(W)x2.7(L)x0.95(H)mm	KKT-310TR (Ivory)	3.2(W) x 4.5(L) x 1.5(T)mm
10pF	TZS2Z100A001R00	2.2(W)x2.7(L)x0.95(H)mm	KKT-310TR (Ivory)	3.2(W) x 4.5(L) x 1.5(T)mm

Murata posted news in the website that trimmer capacitors will be discontinued after 2021 March. As a competitor, we suppose that TZR1 Series (Ultra-small and thin with external dimensions of 1.5(W)x1.7(L)x0.85(H)mm) and TZW4 Series (Compact size: 4.2(W)x5.2(L)x2.6max.(H)mm) have no replacement product in the market for the same capacitance and size.

Could you please think about using Kingtornics ceramic trimmer capacitors KKT series small size with external dimension of 3.2(W) x 4.5(L) x 1.5(T) mm? Unique construction with no plastic material provides superior soldering heat resistance to maintain excellent characteristic performance after reflow soldering. It is suitable for high frequency circuit due to high self-resonant.

Company	Capacitance          (pF MAX)	Part Number	L x W (size)	Status
Kingtronics	3pF	KKT-303TR (Black)	3.2(W) x 4.5(L) x 1.5(T) mm	hot selling
	6pF	KKT-306TR (Blue)	3.2(W) x 4.5(L) x 1.5(T) mm	hot selling
	10pF	KKT-310TR (Ivory)	3.2(W) x 4.5(L) x 1.5(T) mm	hot selling
	20pF	KKT-320TR (Pink)	3.2(W) x 4.5(L) x 1.5(T) mm	hot selling
	30pF	KKT-330TR (Green)	3.2(W) x 4.5(L) x 1.5(T) mm	hot selling
Murata	8pF	TZR1R080A001B00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	8pF	TZR1R080A001R00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	1pF	TZR1Z010A001B00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	1pF	TZR1Z010A001R00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	4pF	TZR1Z040A001B00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	4pF	TZR1Z040A001R00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	1.5pF	TZR1Z1R5A001B00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	1.5pF	TZR1Z1R5A001R00	1.5(W)x1.7(L)x0.85(H)mm	To be discontinued
	1pF	TZW4Z010A001B00	4.2(W)x5.2(L)x2.6max.(H)mm	To be discontinued
	1pF	TZW4Z010A001R00	4.2(W)x5.2(L)x2.6max.(H)mm	To be discontinued
	1.5pF	TZW4Z1R5A001B00	4.2(W)x5.2(L)x2.6max.(H)mm	To be discontinued
	1.5pF	TZW4Z1R5A001R00	4.2(W)x5.2(L)x2.6max.(H)mm	To be discontinued

Note:The product information in this catalog is for reference only,Please contact our sales before ordering: info@kingtronics.com

Through years efforts, we have been working on not only best quality but also competitive offer for our valued customers~

Below you can find our faster lead time in global electronic market for our Trimmers. Feel free to have a try !

Please let us know if there is any scope to work together in coming New Year !

Learn more:http://kingtronics.com/trimming-potentiometers/

A. Because the capacity of electrolytic capacitors is much larger than that of general fixed capacitors, the appropriate range should be selected for different capacities when measuring. In general, the capacitance between 1 ~ 47μF can be measured by R × 1k, and larger than 47μF can be measured by R × 100.
A、因為電解電容的容量較一般固定電容大得多，所以，測量時，應針對不同容量選用合適的量程。一般情況下，1～47μF間的電容，可用R×1k擋測量，大於47μF的電容可用R×100擋測量。

B. Connect the red meter to the negative pole and the black meter to the positive pole. At the moment of contacting, the pointer deflects to the right largely (for the same resistance, the larger the capacity, the larger the swing), and then gradually turn left until it stops at a certain point, which is  the forward leakage resistance that is slightly larger than the reverse leakage resistance. The leakage resistance should generally be above hundreds kΩ, otherwise, it will not work properly. In the test, if there is no charging phenomenon in the forward direction and the reverse direction, that is the needle does not move, which means that the capacity disappears or the internal circuit is broken. If the resistance measured is small or zero, it indicates that the capacitor is large leakage resistance or has been broken and damaged, cannot be use any more.
B、將萬用表紅表筆接負極，黑表筆接正極，在剛接觸的瞬間，萬用表指針即向右偏轉較大偏度(對於同一電阻擋，容量越大，擺幅越大)，接着逐漸向左迴轉，直到停在某一位置。此時的阻值便是電解電容的正向漏電阻，此值略大於反向漏電阻。電解電容的漏電阻一般應在幾百kΩ以上，否則，將不能正常工作。在測試中，若正向、反向均無充電的現象，即錶針不動，則說明容量消失或內部斷路;如果所測阻值很小或為零，說明電容漏電大或已擊穿損壞，不能再使用。

C. For the electrolytic capacitor whose signs are unknown, it can be discriminated by using the above method. Frist, measure the leakage resistance at randomly and remember its swing. Then, exchange the test leads to measure a resistance. In two measurements, the large resistance is the forward connection, that is the black meter is connected to the positive pole and the red one is connected to the negative pole.
C、對於正、負極標誌不明的電解電容器，可利用上述測量漏電阻的方法加以判別。即先任意測一下漏電阻，記住其大小，然後交換表筆再測出一個阻值。兩次測量中阻值大的那一次便是正向接法，即黑表筆接的是正極，紅表筆接的是負極。

D. Via the multimeter to charge the electrolytic capacitor from the positive and the reverse side, the capacity can be estimated according to the magnitude of the swinging.
D、使用萬用表電阻擋，採用給電解電容進行正、反向充電的方法，根據指針向右擺動幅度的大小，可估測出電解電容的容量。

Additional information about Kingtronics can be found at http://kingtronics.com/