MMBT8050 and MMBT8550 are SOT-23 plastic package. There are three terminals which represents base, emitter and collector. For switching and amplifier applications, especially suitable for AF-driver stages and low power output stages.
They are a low voltage high current small signal transistor, designed for class B push-pull audio amplifier and general purpose applications. Collector current up to 600mA; Collector-emitter voltage up to 25V.The MMBT8550 transistor is subdivided into two groups C and D according to its DC current gain.
NPN Silicon Epitaxial Planar Transistors MMBT8050 Datasheet Download:
http://kingtronics.com/pdf/MMBT8050.pdf
PNP Silicon Epitaxial Planar Transistors MMBT8550 Datasheet Download:
http://kingtronics.com/pdf/MMBT8550.pdf

An extreme heat wave is coming, how to do we can stay cool and hydrated ?
As you know, make sure you’re drinking enough water or milk.
Here sharing some ways as below, let’s stay healthy and happy during this Summer !
*Wear casual and oversized clothes. Better choose white clothing instead of black one
穿寬鬆和輕便衣服,最好選擇反光的白色衣物(黑色更吸光,適合天冷時穿)
*Wear sunscreen & hat outdoor, also sunglasses to protect your eyes
常擦防曬乳、出門攜帶帽子&到戶外戴太陽眼鏡以保護眼睛
*Take the shower with cold water
多用冷水淋浴
*Bring one towel with you, wet your towel and wipe you face and neck anytime anywhere.
隨身攜帶一條毛巾,隨時可以用冷水浸泡後擦拭臉部和頸部。
*choose a thinner blanket with air permeability
選擇薄和透氣性好的棉被單(華人夏季有睡涼席和涼牀的傳統,有類似之處)
*try to keeping the windows open and use the fan with some breeze.
注意開窗通風以及使用風扇等
*on the other hand, close window and curtains drawn if it’s hotter outside than inside.
如白天室外陽光太強,盡量關上窗和拉上窗簾,以防室內曝曬溫度升高
*having more fruits and vegetables contain more hydrate such as watermelon and cucumber, watch out for is excessive alcohol as it can increase the risk of dehydration.
多吃西瓜、小黃瓜這類含水分較多的水果和蔬菜。盡量少喝含糖和酒精飲料。
參考來源: https://www.bbc.com/news/health-49112807
https://www.bbc.com/zhongwen/trad/science-48789636

Kingtronics team is keeping making effort to improve price, lead time, service~~
Tantalum capacitors cost and lead time were big problems in the market.
After the long time effort, nowadays, glad to be informed that we manage to realize better prices and lead time for this series.
Our tantalum capacitors can cross with many other brands with more competitive prices and lead time now.
There is no reason to reject the strong support from Kingtronics, right ?
Prices: Surprise !!!
Lead time: AVX 12~14 weeks
Vishay 11~13 weeks
Kingtronics 5-9 for Dipped type, 2-5 for SMD type
| Tantalum Capacitor Cross Reference | |||||||
| Kingtronics Series | Kingtronics Description | NIC series | AVX(KYO CERA) | KEMET | Matsuo | NEC | Nichicon |
| CKT series | Tantalum Chip Capacitors, General Purpose, A,B,C,D,E,F | NTC-T | TAJ | T491 | 265 267 | NR | F93 |
| TKT Series | Radial Epoxy Dipped Tantalum Capacitor | NDTM | TAP | T350 to T390 | 202 / 204 | ND, NP | S89 |
| Kingtronics Series | Kingtronics Description | Panasonic | China Part No. | KOA/Hitachi | Vishay | Nemco | DAEWOO |
| CKT series | Tantalum Chip Capacitors, General Purpose, A,B,C,D,E,F | TE(ECST) | CA45 | TMC TMC-M | 293D | … | … |
| TKT Series | Radial Epoxy Dipped Tantalum Capacitor | ECSF | CA42 | … | … | TB PDT | TB/TD |

MMBT3904 and MMBT3906 are a bipolar (BJT) small signal transistor in a SOT−23-3 type surface mount package, they are designed for general purpose amplifier and switching applications. The useful dynamic range extends to 100mA as a switch and to 100MHz as an amplifier. As complementary types the NPN transistors MMBT3904 is recommended.
In response to demand market, Kingtronics small quantities transistors can be shipped immediately. The common application is signal Processing, Power Management, Portable Devices, Consumer Electronics, and Industrial.
NPN Silicon General Transistors MMBT3904 Datasheet Download:
http://kingtronics.com/pdf/MMBT3904.pdf
PNP Silicon General Transistors MMBT3906 Datasheet Download:
http://kingtronics.com/pdf/MMBT3906.pdf

Kingtronics International Company is a professional manufacturer with 30+ year experience in electronics component field.
Kingtronics offers you SMD 3mm Chip Ceramic Trimmer Capacitor (KKT) with various capacitance from 3pF, 6pF, 10pF, 20pF … to 30pF which is designed for reflow soldering in the small size of 3.2(W) x 4.5(L) x 1.5(T) mm.
Kingtronics Trimmer Capacitors pass high standard RoHS 2.0 while company acquires international certification ISO 9001:2015. Let us support you and be a strong back-up for you! We’re glad to help you!
http://www.kingtronics.com/pdf/3mm-Ceramic-Trimmer-Capacitor-ROHS.pdf

As a popular brand serving global market over 3 decades, we are firmly confident on providing professional cost-effective solutions.
Especially on Aluminum Electrolytic Capacitor scape, we perform our duties as a trustworthy partner in maximizing the most of profit for worldwide customers, as well as offer cutting-edge technology products.
Customers with orders on hand enjoys the highest priority, meanwhile everyone is equal when seeking our support under closer negotiation.
The more business information customers are willing to share, the better cooperation we can achieve.
Open heart. Joint efforts. Count on each other. More prosperous future is within our control.
Kingtronics Aluminum Electrolytic Capacitor Factory https://youtu.be/KlUnsCwQC3Y
Kingtronics Kt SMD Type Aluminum Electrolytic Capacitors Factory https://www.youtube.com/watch?v=ZpMf5VRjjFU&t=1s
Kingtronics Kt Radial Aluminum Electrolytic Capacitors Manufacturing Process https://youtu.be/o3bQ4Vj_33A

Have nice day
Summer holidays is coming, do you have new order plan before holidays ?
Kingtronics sales team gets good news for you!
In order to bring more benefits to our customers, Kingtronics now has special offers for SMD ECAP!
Kindly don’t be hesitate to share your inquiries with us, let Kingtronics help you cost down!
Validity period : until 31th Oct 2019
Lead Time around: 4-8 weeks! (>>>comparing to other supplier, we have more better lead time!)
Kingtronics Kt SMD Type Aluminum Electrolytic Capacitors Factory https://www.youtube.com/watch?v=ZpMf5VRjjFU&t=1s
Ecap catalog: http://www.kingtronics.com/pdf/Kingtronics-Aluminum-Electrolytic-Capacitors-Catalog.pdf
| Aluminum Electrolytic Capacitors - SMD Type | ||||
| Kingtronics P/N | Load Life | Temperatures | Characteristic | Datasheet |
| GKT-VA | 2000H | 85°C | Standard | ↓ Download PDF |
| GKT-VT | 1000H~2000H | 105°C | Standard | ↓ Download PDF |
| GKT-VC | 2000H | 85°C | Low Leakage Current | ↓ Download PDF |
| GKT-VE | 2000H-3000H | 105°C | Long Life | ↓ Download PDF |
| GKT-VK | 2000H-3000H | 105°C | Extra Lower Impedance | ↓ Download PDF |
| GKT-VL | 3000H-5000H | 105°C | Extra Long Life | ↓ Download PDF |
| GKT-VN | 2000H | 105°C | Bi-polar | ↓ Download PDF |
| GKT-VZ | 1000H-2000H | 105°C | Low Impedance | ↓ Download PDF |
| GKT-VU | 3000H | 105°C | Long Life | ↓ Download PDF |
| GKT-VD | 6000H | 105°C | Long life | ↓ Download PDF |
| GKT-VW | 10000H | 105°C | Long life | ↓ Download PDF |
| GKT-VH | 1000H-5000H | 125°C | Long life | ↓ Download PDF |
| GKT-VF | 5000H | 105°C | Super Low Impedance | ↓ Download PDF |
It said most popular topic in 2018 is Artificial Intelligence (AI), then the promising keyword in 2019 must be 5G mobile communication technology.
As EPCI reported:
In many respects, however, 5G will be a two-edged sword in that customer demand for new 5G mobile phones in 2019/20 is going to put additional strain on capacity within the electronic components supply network as components manufacturers and their distributors struggle to keep up with demand.
Here’s why: smartphones are the largest application market for multilayer ceramic chip capacitors (MLCCs) and at a time when major MLCC manufacturers are trying to increase production capacity to alleviating the current shortage, the dawning of the 5G era will rapidly increase the amount of MLCC s used. The average MLCC usage of 4G + (LTE-advanced) smartphones is estimated to be in the range of 550 to around 900, and it is predicted that each device in the 5G era will boost this number to more than 1,000.
We can imagine it will be a new trend and challenge to the components manufacturers and distributors for the upcoming increasing demand.
In order to have well-prepared, Kingtronics could support MLCC with Radial & SMD type with competitive lead time.
Pls feel free to share if any possible demand, we’re willing to share your burden through tough time.
Let’s work together for the prospect 5G new era ! ^@^
Sources: https://passive-components.eu/5g-future-is-now/

Below professional report indicates some popular brand’s competitiveness on lead time and price. It’s a guidance leading you to save more cost.
Price is cost, Time is cost, Service is cost… Among various famous brands, it’s obvious Kingtronics is the one who offers more economically.
Any requirements based on orders are negotiable, we are open to closer cooperation.
| ALUMINUM ELECTROLYTIC CAPACITOR | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| NIC Components | 16-25 | Increasing | Increasing |
| Nichion | 14-20 | Decreasing | Increasing |
| Surge | 16-18 | Stable | Stable |
| Panasonic | 14-18 | Decreasing | Stable |
| United Chemicon | 16-18 | Increasing | Stable |
| Kingtronics | 5-9 | Stable | Descreased , Stable |
| | | | |
| CAPACITORS-TANTALUM | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| AVX | 12-14 | Decreasing | Stable |
| Vishay | 11-13 | Decreasing | Stable |
| Kingtronics | 5-9 for Dipped type, 2-5 for SMD type | Stable | Descreased , Stable |
| | | | |
| LEADED CAPACITORS - CERAMIC | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| AVX | 18-20 | Stable | Stable |
| Murata | 18-20 | Stable | Stable |
| Vishay | 12-16 | Stable | Stable |
| NIC Components | 14-18 | Increasing | Increasing |
| TDK | 14-20 | Increasing | Increasing |
| Kingtronics | 3-5 | Stable | Descreased , Stable |
| | | | |
| SURFACE MOUNT GENERAL CAPACITORS - CERAMIC (Less than 1uf) | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| AVX | 22+ | Decreasing | Selective Market Adjustments |
| Murata | 30+ | Decreasing | Stable |
| Samsung | 16+ | Decreasing | Stable |
| TDK | 40+ | Decreasing | Stable |
| NIC Components | 16+ | Decreasing | Selective Market Adjustments |
| Taiyo Yuden | 16 | Decreasing | Stable |
| Yageo | 16 | Decreasing | Stable |
| Walsin | 16 | Decreasing | Stable |
| Vishay | 20+ | Stable | Stable |
| Kingtronics | 4-6 | Stable | Descreased , Stable |
| | | | |
| SURFACE MOUNT GENERAL CAPACITORS - CERAMIC (greater than 1uf)***Excludes 1206+ sizes | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| AVX | 30+ | Stable | Stable |
| Murata | 22-38+ | Stable | Stable |
| Samsung | 30+ | Stable | Stable |
| TDK | 40+ | Stable | Stable |
| NIC Components | 24+ | Stable | Stable |
| Taiyo Yuden | 18+ | Stable | Stable |
| Yageo | 16 | Stable | Stable |
| Walsin | 40+ | Stable | Stable |
| Kingtronics | 4-6 | Stable | Descreased , Stable |
| | | | |
| TRIMMERS & POTS | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| BI Tech | 8-20 | Stable | Stable |
| Piher | 10-14 | Stable | Stable |
| Panasonic | 14-17 | Increasing | Stable |
| Vishay | 10-14 | Stable | Stable |
| Kingtronics | 5-7 | Stable | Stable |
| | | | |
| Varistors | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Littelfuse | 8-10 | Stable | Stable |
| AVX | 14-16 | Stable | Stable |
| Epcos | 14-16 | Stable | Stable |
| Maida | 8-10 | Stable | Stable |
| Kingtronics | 5-7 | Stable | Stable |

The following information about lead time and pricing of active parts has been gathered from multiple sources in the market.
There is no doubt that Kingtronics is the supplier who can support with more competitive lead time comparing with many other brands.
What are you waiting for ? Buy from Kingtronics now and enjoy the best lead time !
| TVS DIODES | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 12-16 | Increasing | Stable |
| Littelfuse | 16 | Decreasing | Selective Market Adjustments |
| Vishay | 25-40 | Decreasing | Increasing |
| STMicroelectronics | 8 | Stable | Stable |
| Kingtronics | 7~9 | Stable | Stable |
| BRIDGE RECTIFIERS | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 16-32 | Stable | Stable |
| ON Semiconductor (Fairchild) | 5-15 | Decreasing | Selective Market Adjustments |
| Vishay | 8-16 | Decreasing | Stable |
| Kingtronics | 5~7 | Stable | Stable |
| SCHOTTKY DIODES | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 12-32 | Decreasing | Stable |
| Nexperia | 08-26 | Decreasing | Selective Market Adjustments |
| ON Semiconductor | 06-20 | Decreasing | Selective Market Adjustments |
| ON Semiconductor (Fairchild) | 12-26 | Decreasing | Stable |
| Kingtronics | 5~7 | Stable | Stable |
| RECTIFIERS | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 8-32 | Decreasing | Stable |
| Vishay | 08-22 | Decreasing | Stable |
| ON Semiconductor | 05-15 | Decreasing | Selective Market Adjustments |
| STMicroelectronics | 10-32 | Decreasing | Stable |
| ON Semiconductor (Fairchild) | 05-15 | Decreasing | Selective Market Adjustments |
| Kingtronics | 5~7 | Stable | Stable |
| SWITCHING DIODES | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 12-32 | Decreasing | Stable |
| ON Semiconductor (Fairchild) | 12-26 | Decreasing | Stable |
| ON Semiconductor | 06-20 | Decreasing | Selective Market Adjustments |
| Nexperia | 08-26 | Decreasing | Selective Market Adjustments |
| Kingtronics | 4~6 | Stable | Stable |
| ZENER DIODES | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 12-32 | Decreasing | Stable |
| ON Semiconductor (Fairchild) | 12-26 | Decreasing | Stable |
| Nexperia | 08-26 | Decreasing | Selective Market Adjustments |
| ON Semiconductor | 08-20 | Decreasing | Selective Market Adjustments |
| Vishay | 12-50 | Decreasing | Stable |
| Kingtronics | 5~7 | Stable | Stable |
| TRANSISTORS | |||
| MANUFACTURER | CURRENT LEAD-TIMES(weeks) | LEAD-TIMES TREND | CURRENT PRICING |
| Diodes Inc. | 12-32 | Decreasing | Stable |
| ON Semiconductor | 06-20 | Decreasing | Selective Market Adjustments |
| STMicroelectronics | 12-20 | Decreasing | Stable |
| Nexperia | 08-26 | Decreasing | Selective Market Adjustments |
| ROHM | 10-20 | Decreasing | Stable |
| Kingtronics | 5~7 | Stable | Stable |
Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
E-mail: info@kingtronics.com
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WhatsApp: Chat with us on WhatsApp
Web: www.Kingtronics.com
YouTube: www.youtube.com/c/Kingtronicskt
Kingtronics International Company was established in 1995 located in Dongguan City of China to handle all sales & marketing for factories located in Chengdu, Sichuan and Zhaoqing, Guangdong, China. In 1990, we established the first factory to produce trimming potentiometer and in 1999 we built up new factory in Zhao Qing, Guangdong. Now with around 850 workers, Kingtronics produce trimming potentiometers, dipped tantalum capacitors, multilayer ceramic capacitors, and diode & bridge rectifier. We sell good quality under our brand Kingtronics, and Kt, King, Kingtronics are our three trademarks. All our products are RoHS compliant, and our bridge rectifier have UL approval. Please visit our Products page, you could please download all our PDF datasheet and find cross reference for our Trimming Potentiometer and capacitors.
Tantalum and Ceramic Capacitors Cross Reference ↓ Download
Diodes & Rectifiers List(PDF: 97KB) ↓ Download
Trimming Potentiometer Cross Reference ↓Download