SMA540B Datasheet - STMicroelectronics

SMA540B Active Biased RF Transistor

The SMA540B is a NPN Transistor integrating a current mirror as biasing. In this way the IC (collector current) can be controlled setting the current at Bias pin according to IC = 10 * IBIAS. The IBIAS current is easy adjustable using an external resistor. SMA540B is housed in ultra miniature SO.

SMA540B Active Biased RF Transistor PRELIMINARY DATA HIGH GAIN LOW NOISE AMPLIFIERS Gms = 19 dB at 1.8 GHz CURRENT EASY ADJUSTABLE BY AN EXTERNAL RESISTOR OPEN COLLECTOR OUTPUT TYPICAL SUPPLY VOLTAGE: 1.4-3.3 V TRANSITION FREQUENCY 42 GHz ULTRA MINIATURE SOT323-4L PACKAGE (LEAD FREE) APPLICATIONS WIDEBAND APPLICATIONS CELLULAR AND CORDLESS TELEPHONES HIGH FREQUENCY OSCILLATORS Bias Bias, 4 C, 3 SOT323-4L .

SMA540B_STMicroelectronics.pdf