Highly Integrated Digital Transistors

22nd March 2007

ES Admin

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Fairchild Semiconductor has introduced two families of 200mW digital transistors that integrate an external resistor bias network into the smallest form factor package on the market. Tailored for use in switching, inverter, interface and driver circuits, the FJY30xx (NPN) and FJY40xx (PNP) series eliminate the need for an external resistor. This integration reduces part count, which in turn helps designers save board space, lower design costs, simplify circuit designs and maximize system performance.

Board space is further optimized by utilizing surface-mount technology (SMT). Available in an ultra-small, ultra-thin (1.7mm x 0.98mm x 0.78mm) SOT523F package, these transistors feature the industry’s lowest package height compared to similar devices in SOT523 packaging while consuming only 2.8mm2 board footprint area. This combination of integration and packaging benefits makes Fairchild’s transistors ideal for use in cell phones, PDAs, handheld games, notebooks and other portable applications.

“Fairchild’s FJY30xx and FJY40xx digital transistors with built-in resistors offer designers the thinnest devices available for improving performance in designs limited by board-space and height requirements,” said Max Chua, product line manager, Digital Transistors. “Not only do these transistors lower part cost and ease design complexity, this new suite of 29 digital devices complements Fairchild’s existing line of transistors including the TO92-packaged FJN series, the SOT23-packaged FJV series, and the SOT323-packaged FJX series. This portfolio expansion provides designers with a comprehensive selection of 145 digital transistors from a tier-one supplier.”