Alan Sun
Alan Sun
President at Vadas International Co., Ltd.
California, United States
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Vadas International Co., Ltd. is an industrial leading hybrid distributor of electronic components, which is committed to provide comprehensive electronic components supply chain solutions for Original Equipment Manufacturers (OEM), Original Brand Manufacturers (OBM), Contract Manufactures, Electronic Manufacturer Service (EMS) providers and Design Houses.

We provide products and services over all areas of the electronics industry, including: Consumer Electronics, Computers and Peripherals, Communications, Industrial Control, Automotive Electronics, Security, Power Supply, New Energy, Medical Equipment, etc.. We also provide service such as Spot Buy, BOM Kitting, Excess Stock Liquidation, PPV projects and other Value Added Services. At the meantime, as the Authorized Distributor for SEI and Unigen, we provide technical supports and solutions for full range of resistive products as well as memory, wireless module products, etc., from Design In, Sample Run, Pilot Run to Mass Production for new projects.

Our most valuable treasure is the Sunny, Professional and Passionate service team. Global ‘7- Days-24-Hours’ service is not only a slogan, but our commitment to every distinguished customer. The industry of Electronic Components Distribution is full of changes and challenges, we never slack in any detail of the supply chain; our dedicated and responsible service spirits as well as active and diligent working attitude are the only reason for our “Best Supplier” award given by customers.

Every day, we manage millions of line items from more than 5000 business partners in over 40 countries through our company’s database; we have close business contacts and share information with big manufacturers and agents from the United States, Germany, Finland, Britain, Italy, Japan, South Korea, Singapore, Taiwan, Hong Kong and the mainland China; We perform real-time interaction with the industry news organizations, such as Global Sources, EE Times, Electronic Buyer’s News, to obtain the most valuable market information; we also posses: worldwide logistics network for accurate and quick logistics service; ISO9001:2008 certification of quality management for the arrival of “Zero Defect” goods; state-of-the-art anti-static constant temperature and humidity storage environment to ensure the safe storage of goods and the timely shipping to meet customer demands.

This is Vadas, your most trustworthy supplier of electronic components.

Product Line


ZTE is a leading global provider of telecommunications equipment and network solutions. Founded in 1985. ZTE has the widest and most complete product range in the world covering virtually every sector of the wireline, wireless, service and terminals markets. ZTE's 3G modules cover all kinds of 3G in China such as CDMA2000,WCDMA,TD-SCDMA。


AutoNavi is a leading provider of digital map content and navigation and location-based solutions (LBS) in China, provide customized solutions of differential SDK development, can seamlessly integrate open source navigation software into user data.


Telit Wireless Solutions is an enabler of the global machine-to-machine (m2m) movement. The company views m2m as the space intersected by the following three technology pillars

1)Long-range cellular connection of devices to each-other and the Internet of Things (IOT);

2)Short-to-long range license free wireless connection of devices to their peripherals, to each other, and to long-range gateways;

3)Position awareness for all connected devices.


Founded in 1997, TST's goal is to become the leading manufacturing, design and service provider for high performance communication components. TST is now recognized as the leading SAW (surface acoustic wave) device supplier in Taiwan, as well as the key OEM/ODM supplier of SAW device in the world.


Novatek Microelectronics Corp. is a leading fabless chip design company specializing in the design,development and sales of a wide range of display driver ICs & SoC solutions that help our worldwide customers meet emerging needs for sophisticated flat-panel display applications and audio/video applications for all digital devices.


MiraMEMS Sensing Technology Co., Ltd focuses on the development and production of micro-motor sensor products, including the accelerometer, gyroscope and electronic compass.


Shanghai Natlinear Electronics Co. Ltd. focuses on the design and research on Analog and Mixed-Signal integrated circuit. After several years of quick development, Natlinear has covered more than 200 different products, including hall switch, charger management, audio amplfier, DC/DC converters, AC/DC converters, white LED drivers, voltage detectors, ultra-low power LDO, high speed LDO, dual LDO,MOSFET and many other categories as well.


Liteon-Semi is famous company published in Taiwan, design, develop , package and test a wide series of green energy related semiconductor components that are mainly applied on communications, information, consumer electronics products' switching powersupply and system power supply.


Microdul was founded in 1991 as a management buy out (MBO) by Faselec, a Philips subsidiary. We develop and produce customised microelectronic components. Our customers benefit from the many years of experience we have in ASIC design and in development of customised electronic modules.

CellWise consists of highly experienced and innovative experts focused on power, analog and mixed-signal design.

Shanghai Duty Cycle Electronics

Shanghai Duty Cycle electronics Co. Ltd is located in Lujiazui financial center, dedicated to development and produce of LED driver chips. With all kinds of resources, Duty Cycle has been playing a leader in LED driver market.

Global Semiconductor

Global Semiconductor is a company established in 2010, focused on high-end mixed-signal integrated circuit & MOSFET design. Based on the advantageous resources, we have integrated three technology which of chip-design, semiconductor and package, on behalf of the highest level power IC system design in the world.


Fujitsu Semiconducto r ,offers an extensive range of products from microcontroller, application-specific integrated circuit (ASIC), application-specific standard product (ASSP), system-on-chip (SoC) to system memory, that can be supplied as product or complete solution.


ATE, one of the most famous power resistor manufacture, its products include Aluminium housed resistor, axial wirewound resistors, thick film resistor, are widely used in industry, medical, electric and other filed.


OTAX provide various high/medium/low voltage switches, various electronic loop rotary switches, sensor switches, memory cards, PCMCIA card connectors, CPU sockets, and other parts forming, punching and electroplating.

Camden Electronics

Founded in 1986, Camden Electronics, the UK's leading supplier of PCB terminal blocks, fuse holders, micro-switches, interconnection products and DIN rail enclosures, has acquired Boss Enclosures Ltd。

Stackpole Electronics,Inc.

Founded in 1926, Stackpole Electronics is a leading global supplier of resistive components including Thick and Thin Film Surface Mount resistors, Axial Leaded and Wirewound resistors, Current Sense resistors, Varistors, Inductors and various Power Resistors.


Unigen Corporation, founded in 1991, is a leader in the design and manufacture of OEM memory, DC-DC power converter, wired and wireless communication, and flash solutions. Unigen supplies silicon, modules, and services to leading clients in the PC, server, networking, telecommunications, imaging, medical, defense, and mobile computing industries. Unigen's core competency is the design and manufacture of precise and complex standard and custom module products.


Diotec Semiconductor is a Germany enterprise ,producing and selling the semiconductor diodes and providing related services. Its main products are axial diodes, SMD and rectifiers. Mature taping and leading inspection technology ensure to meet high quality and large batch orders. Diotec, with perfect quality, best price and sincere service ,wins high praise from our customers all over the world and becomes one of the most famous vendors of diode and transistor.


OCS is a world-leading Analog & Digital IC company, OCS Incorporated is a supplier of high-quality, application-specific standard products to serve the consumer electronics, computing, communications, industrial and automotive markets, including Hall sensor, power management IC,LED drive IC and so on.

Hongkong X'tals

HongKong X'tals in 1989, Hong Kong X'tals is a professional and leading manufacturer in frequency products including quartz crystal resonators, crystal clock oscillator and ceramic resonators. Products are widely used in automotive, industrial, telecommunication, consumer applications all over the world. Hong Kong X'tals is part of the Kolinker Group.


APS Advanced Printing Systems specializes in the de-sign and manufacturing of OEM thermal printer mechanisms, controller boards, and custom thermal printer solutions,offers the complete thermal printing so-lution through its’ diverse product family of Mini, Flat, Compact, and Easy-Loading Printers, as well as Ultra Compact Bucket, Kiosk, Box and Label Modules.