61. Semiconductors - Chemistry Encyclopedia - Structure, Metal, Number, Property, Ma Proteins Chemistry Encyclopedia, Protein Solubility - Chemistry Encyclopedia, Protein Synthesis - Chemistry Encyclopedia, Protein Translation - Chemistry Encyclopedia, Quantum http://www.chemistryexplained.com/Ru-Sp/Semiconductors.html

Powered by JRank Chemistry Explained Foundations and Applications Chemistry Ru-Sp Semiconductors The development of semiconductors is clearly among the most significant technological achievements to evolve from the study of solid-state chemistry and physics. Aside from their well-known applications in computers and electronics, semiconductors are also used in a wide variety of optical devices such as lasers, light-emitting diodes, and solar panels. The diversity of applications can be readily understood with only a basic understanding of the theory behind these materials. Theory The operation of semiconductors is best understood using band theory. At its most fundamental level, band theory can be extremely complex, requiring relatively advanced mathematics and physics. When a large number of atoms combine to form a solid, the electrons e in the solid are distributed into energy bands among all the atoms in the solid. Each band has a different energy, and the electrons fill these bands from the lowest energy to the highest, similar to the way electrons occupy the orbitals in a single atom. The variation in properties between electrical insulators, conductors ( metals ), and semiconductors stems from differences in the band structures of these materials (see Figure 1). For this discussion, three terms must be defined. The highest energy band that contains electrons is called the

62. Intrinsic Semiconductors Intrinsic Semiconductor A silicon crystal is different from an insulator because at any temperature above absolute zero temperature, there is a finite probability that an http://hyperphysics.phy-astr.gsu.edu/hbase/solids/intrin.html

63. Semiconductors - EHow.com Learn about semiconductors on eHow.com. Find info and videos including What Is a Semiconductor?, What Is a Semiconductor Laser?, Semiconductor Failure Causes and much more. http://www.ehow.com/semiconductors/

Family Food Health Home Money Style More Home Semiconductors Semiconductors Semiconductors Featured Articles Atomic Structure of Semiconductors Semiconductors are materials that have electrical properties halfway between conductors and insulators. Pure semiconductor materials can be enhanced by adding small amounts of impurities, known as doping, to alter their conductivity. This ability to control the amount of conductivity makes semiconductors useful in the manufacture of... National Semiconductor Information National Semiconductor, founded in 1959, produces integrated circuits (ICs). These devices are used in the manufacture of electronic instruments and equipment. The company offers over 13,000 different products that are sold to large original equipment manufacturers (OEMs)-primarily, large electronics manufacturers that sell... Related Topics Semiconductor Npn Transistor Led Work Lights Pnp Transistor ... What Diodes Do Articles: Semiconductors What Is a Semiconductor? Semiconductors have replaced bulky and high energy consuming vacuum tubes. Vacuum tubes where once commonplace in... More What Is a Semiconductor Laser?

64. International Rectifier Home Page - Flash Detection Manufacturer of power semiconductors (MOSFET, IBGT, Diodes and Thyristors). http://www.irf.com

65. IXYS Corporation | Welcome Manufactures, and markets a broad spectrum of power semiconductors and power modules for the global power market. http://www.ixys.com/

Product Portfolio Power Devices Pulsed Pwr Systems Laser Diode Drivers ... Employee E-Mail Part# IXYS Power PSpice Models IXYS Power Cross Reference Search ABOUT IXYS Founded in Silicon Valley California, IXYS Corporation develops technology-driven products to improve power conversion efficiency. A development pioneer of power semiconductors, integrated circuits and RF systems, IXYS' products monitor electrical voltage to produce maximum results with least energy expenditure. IXYS IC portfolio include HVICs based on our Clare division's technology, utilizing a high voltage SOI process. Our HVIC's serve medical, telecommunication and power management applications including off AC line LED drivers. Recently, with the integration of Zilog Corporation as an IXYS Company, we added the Zilog family of MCU's to our IC product offering, enabling digital power management to motor control, power metering and battery charging. IXYS also offers power semiconductors for solar/wind energy conversion, and introduced the first solar cell for charging portable batteries. With international presence in Asia, Europe and North America, IXYS employs more than 1000 skilled personnel in nine divisions worldwide. IXYS has a customer base of over 2000 telecom, industrial, medical, transportation and consumer companies.

66. Home Broad-line distributor of discrete semiconductors. http://sentryelectronics.com/

Sentry Electronic Products, Inc Our Goal is to provide goods and services to our customers, that meet their requirements and exceed their expectations. Company Profile Sentry is a Massachusetts, USA Corporation that was formed in 1986. It is a closely held corporation with two major shareholders and active partners. Sentry is described as a broad line independent distributor of electronic components whose strength is discrete semiconductors; namely: diodes, transistors, rectifiers, silicon controlled rectifiers, triacs, and other dual or tri-leaded devices. It is an importer/exporter of these types of devices in volume, with its' major markets being found in the U.S., Europe, and the Far East. Sentry enjoys strong relationships with manufacturers such as NATIONAL SEMICONDUCTOR, FAIRCHILD SEMICONDUCTOR, ALLEGRO MICRO SYSTEMS INC., FAGOR ELECTRONICA, SEMIKRON, SEMTECH, ELECTRONICS INDUSTRY CORPORATION, and other high volume, high quality companies. Contact Information Telephone FAX Postal address 41 Westech Dr. Tyngsboro, MA 01879 Electronic mail General Information: sep@sentryelectronics.com

67. CREE | LEDs For The LED Lighting Revolution Manufacturer of silicon carbide based semiconductors. http://www.cree.com

News Cree XLamp ML-E LED brings lighting-class performance to the half-watt LED markets - Read more More news Featured Product New Cree high-voltage, lighting-class LEDs enable more-efficient LED bulbs - Read more Learn where to buy Cree products Events Learn about Cree products at Electronica 2010 in Munich, Germany, November 9-12.. Learn about more opportunities to see Cree products Cree is a market leader in LED chips, power LEDs, LED backlighting, power switching and wireless communications devices. The LED Lighting Revolution is happening now. Click on the following buttons to see how. Follow us Become a fan Watch us Questions or comments about this website can be sent to webmaster@cree.com

68. Nitronex Corporation Home A developer of gallium nitride (GaN) based semiconductors for wireless base station RF power amplifiers. http://www.nitronex.com

Fully qualified products available in volume quantities Nitronex is the only fully-qualified supplier of Gallium Nitride-on-Silicon RF power transistors for wireless communications applications. Our SIGANTIC® manufacturing process delivers GaN-on-Silicon RF power transistors to meet the increasing power, frequency and bandwidth requirements found in the communication infrastructure and military markets. Process technology Nitronex develops and manufactures a wide range of gallium nitride on silicon (GaN-on-Si) RF power transistors for commercial and military communications markets. By combining the high performance attributes of GaN with the economies of Si wafer substrates, we can deliver ultra-high performance devices at a competitive price point. Our current portfolio includes , and broadband power transistors from 5W to over 100W power cases. Leading Producer of GaN-on-Silicon RF Power Devices NITRONEX CORPORATION 2305 Presidential Drive Durham, NC 27703

69. Latest Semiconductor News For EEs And Technical Management Online newspaper dedicated to semiconductors. http://www.siliconstrategies.com/

var RegistrationStatus = "un-Registered"; Home Latest News Semiconductor News: Silicon Strategies ... Design Designlines Audio Automotive CommsDesign EDA ... Company Directory Product Categories Advanced Technology Analog Boards/Buses Electromechanical ... Video Featured Semiconductor News September chip sales up, says ESIA The three-month average of global sales of semiconductors for September was $26.42 billion, up 2.9 percent compared with the previous month and up ... post comment Intel to fab FPGAs for startup Achronix Intel will lend its semiconductor process technology muscle to build FPGAs for programmable logic startup Achronix Semiconductor at 22-nm and beyond. post comment 16 comments last comment Intel could be after Achronix IP for an Intel asynchronous processor, the only way to beat ARM? Graphene bandgap opened by vapor Tuning a semiconductor bandgap in sheets of pure carbon called graphene can be done using water vapor during fabrication, according to researchers ...

70. Semitronics Corp Is A Manufacturer Of Thyristors And SCR's And Inverters And IGB Manufacturer of power semiconductors. http://www.semitronics.com/

Semitronics Corp A Hi-Reliability Semiconductor Manufacturer home help email Semitronics Corp Freeport, N.Y. 11520 Military, Industrial and Commercial Semiconductors Thyristors / Diodes / Transistors / Rectifiers / SCR's / Triacs / Solid State Relays / Custom Semiconductors Semitronics is a privately held manufacturer of military and commercial semiconductors, providing a full compliment of products and services from wafer fabrication to final test and assembly. Founded in 1957, Semitronics is MIL-PRF-19500 Certified and also provides custom packaging solutions and value added test services. Semitronics manufactures Phase Control Thyristors, Medium Power Rectifiers, Power Transistors, Schottky Rectifiers, IGBT's, Triacs, Solid State Relays, Hybrids and Custom Semiconductors. Semitronics manufactures JAN/JANTX/JANTXV Phase Control SCR's and Medium Power Rectifiers. Semitronics can also supply devices tested to Military levels or to Source Controlled Drawings. Solid State Relays and Custom Semiconductors are also available to Mil specifications. Semitronics offers mil screening for Transistors, SCR's, Triacs, Diodes, Rectifiers, Solid State Relays and Custom Semiconductors using its mil approved facility. Please contact us with any questions.

71. IDT - Integrated Device Technology - Homepage Supplier of semiconductors to the communications market. http://www.idt.com/

72. Global Semiconductor Forum International coverage of semiconductor technology projects both in production and under development. http://www.semiconductor-technology.com

DD_belatedPNG.fix('.png'); Home Today on Global Semiconductor Forum ChipPAC Assembly and Test Facility, Shanghai, China ChipPAC has announced its intention to build a facility that will more than double the company's capacity at its site in... Company A-Z Alphabetical listing of relevant suppliers A comprehensive index of service providers Industry Projects International coverage of semiconductor industry projects both in production and under development Industry Projects Samsung Electronics 300mm Fab Plant, Austin, Texas, USA Samsung Electronics is constructing a 300mm wafer fab in Austin, Texas. Nokia Mobile Phone Production Facility, Chennai, India Nokia has chosen Chennai in the state of Tamil Nadu, Southern India, for its tenth mobile phone factory. Features Lithography Steps Up to the Challenge Demand for greater performance from memory and microprocessors is forcing the industry to strive for higher densities. A Shared Vision Gail Purvis presents an exclusive preview of a round-table workshop planned for the Global Semiconductor Forum. Company Profiles Cosense Cosense, Inc.

73. Semiconductor Links: Semiconductor/Cleanroom Related Resources SEMICONDUCTOR.CO. Industry oriented semiconductor related resources http://www.semiconductor.co.jp/

Semiconductor Links Semiconductor related resources for the semiconductor industry 300mm Test Wafers ABI Directory Semiconductor Products Advanced Contamination Free Manufacturing Services/Solutions Advanced Microlithography Design Services and Products ... How to add your site to Semiconductor Links SEMICONDUCTOR.CO.JP provides semiconductor related resources.

74. Semiconductor OneSource: Semiconductor Glossary Explanation of key terms in semiconductor materials, processes, and devices. http://semiconductorglossary.com/

var PageHits="7224582" clientSideInclude("includeone", "/ads.asp"); Jerzy Ruzyllo's Semiconductor BLOG Semiconductor OneSource Semiconductor Fabrication ... Semiconductor Hall of Fame To order the Semiconductor Glossary book CLICK HERE To order the Semiconductor Glossary PDA Edition E-Book CLICK HERE Search For Term: Welcome! The purpose of this site is to give you an instant explanation of key terms and concepts in the area of semiconductor materials, manufacturing and devices. Just enter the term you would like to have explained and start the search. (Enter acronym, symbol, or fully spelled word.) OR Select term from below A B C D ... Z A a , lattice constant AAS abrupt junction, absorption ... avalanche photodetector, B back contact Back End Of Line processes, BEOL ballistic transport ballroom cleanroom ... burn-in C cadmium sulfide, CdS, cadmium telluride, CdTe, CAIBE calcium, Ca ... CZTS, D DAC damascene dangling bond DBR ... DUV resist E Early effect Ebd EBDW Ebers - Moll model ... extrusion coating F Fabry - Perot cavity Face-Centered Cubic, FCC, cell faceting FAMOS ... FWI G g - line lithography GAA,

75. THE Semiconductor Resource Page Alphabetically arranged list of semiconductor manufacturers. http://www.semiresources.com/

This site requires a FRAMES CAPABLE browser. Frames capable browsers are available for FREE from and Microsoft for the Windows/Intel environment as well as many other combinations. I don't want to exclude you though, so PLEASE e-mail me if you need a non-Framed site. Posted: 10/10/99

76. Britney Spears' Guide To Semiconductor Physics - Lasers And Optoelectronics Semiconductor physics with a bias towards semiconductor lasers. http://britneyspears.ac/lasers.htm

Britney Spears' Guide to Semiconductor Physics [ Home ] [ Picture Galleries ] [ Britney Spears guide to Semiconductor physics ] [ Links ] ... [Britney Gossip] It is a little known fact, that Ms Spears is an expert in semiconductor physics. Not content with just singing and acting, in the following pages, she will guide you in the fundamentals of the vital semiconductor laser components that have made it possible to hear her super music in a digital format. Enter your search terms Web britneyspears.ac Submit search form Scientific Calculator Advertise Here Click here to donate food to the starving people of the world. Introduction The Basics of Semiconductors Semiconductor Crystal Structures Semiconductor Junctions ... Splung.com Physics is a website for students of physics with sections on: mechanics, optics, electricity and magnetism, thermodynamics, nuclear physics and cosmology. The site also uses Flash for demonstrations. I am looking to expand this site by concentrating on the interactive components. If you are passionate about physics and would like to collaborate in this project, by writing content then please contact me Bad-Ads.co.uk

77. Wafer-Bumping.com Homepage A site about semiconductor advanced packaging fabrication processes and methods. http://www.wafer-bumping.com

@import "css/homepage.css"; If you can read this message, your browser does not fully support CSS standards. 99% of the site layout is done using CSS. Although you should still see the content of this site, it's going to look a bit crappy. Basically, pull your socks up and install a modern browser, NOW! This is not just for this site but because you are missing much of the web's enjoyment and expose your computer to many security issues. Get a new one, FireFox, Opera, Nescape, Mozilla, Explorer, no excuses, they are free. Best of all you will see and enjoy many features that you did not suspect existed. A flip-chip bumping and wafer level packaging site... WAFER-BUMPING.COM Thin films and polymers consulting for wafer bumping and wafer level packaging... Optomag provides technical consulting services and help you find engineering solutions for your thin-film and semiconductor packaging polymer processes. We provide engineering consulting services backed by a strong technical knowledge of advanced semiconductor packaging: DESIGN AND MASK LAYOUT FOR PACKAGING We have the software and computer equipment to generate your bumping and redistribution layers layouts: Create your own evaluation wafers to compare bumping capabilities and wafer level reliability of vendors Develop your own in-house process masks Create your own proprietary wafer masks for the foundry of your choice NEW POLYMER EVALUATION We will work with you to: Evaluate new materials for your packaging solutions Monitor vendors or evaluate potential vendors

78. Technology News - New Technology, Internet News, Software, Semiconductor, Teleco Features news about semiconductor technology with scientific discussions. http://technology.physorg.com/

79. The Unusual Diode FAQ - Title Page All about the unusual types of semiconductor diodes. http://www.avtechpulse.com/faq.html/

Products Parametric Search App Notes Ordering ... HOME The Unusual Diode FAQ - v4.5g Maintained by Dr. Michael J. Chudobiak , at Avtech Electrosystems Ltd. The photo shows a very large 35 kV, 55 Amp rectifier, circa 1960. Not your average diode. Contents I. Introduction and CALL FOR VOLUNTEERS II. Changes Made Since Previous Versions Manufacturers Research ... What Laser Diodes are Actually Available? IV. Who makes / What are .... IV.1 - Germanium diodes? IV.2 - Selenium and Copper Oxide diodes? IV.3 - Tunnel diodes, backward diodes? IV.4 - Step Recovery Diodes (SRDs)? ... How To Order Note: this FAQ is a personal endeavor of Dr. Michael J. Chudobiak. Avtech Electrosystems is not a manufacturer or distributor of diodes. Avtech Electrosystems Ltd. Providing standard and customized test solutions since 1975

80. New URL Manufacturer of a full line of semiconductor devices - Memory, Asic, System. http://www.samsungsemi.com

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