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You are purchasing a very unique six inches silicon wafer made by Dallas Semiconductor. The wafer feature various test patterns and components, and are designed to verify the performance and yield of the wafer manufacturing process. It represents a great example of semiconductor manufacturing technology from the late 80's and makes for great educational, collection and display item. It will produce shiny, multicolored rainbow reflection with light, like a CD.Check out my other listings for more wafers and silicon die products!Free worldwide shipping! Small test patterns (1988)
Dallas Semiconductor designed and manufactured analog, digital, and mixed-signal integrated circuits. Its specialties included communications products (including T/E and Ethernet products), microcontrollers, battery management, thermal sensing and thermal management, non-volatile RAM, microprocessor supervisors, delay lines, silicon oscillators, digital potentiometers, real-time clocks, temperature-compensated crystal oscillators (TCXOs). Dallas Semiconductor is especially known for its 1-Wire serial interface products: 1-Wire is a device communications bus system that provides low-speed offerirectional data, signaling, and power over a single signal. One distinctive feature of the bus is the possibility of using only two wires: data and ground. To accomplish this, 1-Wire devices include an 800 pF capacitor to store charge, and to power the device during periods when the data line is active. The 1-Wire devices enabled the Dallas Semiconductor iButton products (also known as the Dallas Key), a mechanical packaging standard that places a 1-Wire component inside a small stainless steel "button" similar to a disk-shaped watch battery. iButtons are connected to 1-Wire bus systems by means of sockets with contacts which touch the "lid" and "base" of the canister.
The Dallas, Texas-based company was founded in 1984 and purchased by Maxim Integrated Products in 2001, which kept using the Dallas brand until 2007.Shipping, handling and return
Payment is due within seven days of sale end. Free shipping is included in the final price to any location worldwide. If you would like to use a specific shipping service such as registered and/or express, please contact me for a quote. Shipping will be done within three business day from payment receipt, item will be shipped from Paris France. The wafer is sold as is. If for some reason you are not pleased with your purchase please contact me, I will work with you to solve the problem, or accept a return of the item on the day of arrival without restocking fee (return shipping at your expense).
The surface of the wafers is fragile and should not be touched to avoid scratches. Handling of the wafers is best done by holding them on the rim, as finger prints will easily stain both the top and bottom surface. While quite robust, the wafers can break with very sharp an cutting edges.
Thank you very much for looking at my items and I hope you will enjoy owning a part of Dallas Semiconductor history and silicon chip manufacturing technology.
I combine shipping!