6 GHz NPN RF transistor in SOT-323 — what it is and where it fits
The Infineon BFR93AWH6327XTSA1 is an NPN silicon RF transistor designed for low-noise amplifier and driver stages up to the low-GHz range. Its 6 GHz transition frequency and noise figure of 1.5 dB to 2.6 dB from 900 MHz to 1.8 GHz make it a natural fit for ISM-band receivers, GPS front-ends, and cellular LNA stages. The 12 V collector-emitter breakdown gives headroom for supply rails, while the 90 mA continuous collector current and 300 mW power dissipation suit it for small-signal amplification rather than power output. It comes in the industry-standard SC-70 / SOT-323 footprint, supplied as PG-SOT323.
Package and mounting — SOT-323 logistics
The part is surface-mount in SC-70 / SOT-323, with the Infineon ordering code designating PG-SOT323. The package is small enough for dense RF layouts but still hand-solderable with a fine tip and magnification. Available in Tape & Reel (TR) or Cut Tape (CT) options — the CT variant is convenient for prototype and small-batch builds, while the TR reel suits production pick-and-place. The 150 °C junction temperature rating gives thermal margin for moderate dissipation in a compact board.