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What Is the Smallest RFID Tag?
What is the tiniest tag available on the market, and what company produces such a tag?
There are different types of RFID tags, including passive low-frequency (LF), high-frequency (HF) and ultrahigh-frequency (UHF) tags. Electronic component maker Murata Manufacturing offers the smallest HF tag available on the market. It measures 3.2 millimeters (0.13 inch) in width and length and 0.7 millimeter (0.03 inch) in thickness. Murata's transponder has a ceramic substrate enclosing a layered circuit board and an antenna (see Murata Mass-Produces 'World's Smallest HF Tag'). Murata also offers UHF Gen 2 RFID tags that measure 3.2 millimeters by 1.6 millimeters (1.3 inches by 0.06 inch), and an ultraslim model measuring 2.2 millimeters (0.09 inch) in thickness but 60 millimeters (2.4 inches) in length.
Hitachi Chemical sells the smallest EPC Gen 2 passive UHF RFID tag. It measures just 2.5 millimeters (0.098 inch) square and 0.3 millimeter (0.012 inch) in thickness. Consisting of an Impinj Monza 5 chip and an antenna embedded in epoxy resin, the Ultra-Small Package tag is designed to be durable enough that it could be applied via injection molding, or be incorporated into a printed circuit board. This means the tag could be built into a circuit board or a semiconductor's packaging and sustain the temperatures typically used during manufacturing processes—as high as 260 degrees Celsius (500 degrees Fahrenheit)—without ceasing to function (see Hitachi Chemical Markets Tiny UHF Tag).
—Mark Roberti, Founder and Editor, RFID Journal
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