BFQ149,115 Description
The BFQ149,115 is a PNP 5 GHz wideband transistor. PNP transistor enclosed in a SOT89 package. It is designed to be used in SMD-based microwave amplifiers, such as radar systems and spectrum analyzers, as well as UHF applications such broadband aerial amplifiers (30 to 860 MHz).
BFQ149,115 Features
Circuits with greater energy efficiency are usually possible. For low-power applications (for example, voltage amplification) in particular, energy consumption can be very much less than for tubes.
Complementary devices available, providing design flexibility including complementary-symmetry circuits, not possible with vacuum tubes.
Very low sensitivity to mechanical shock and vibration, providing physical ruggedness and virtually eliminating shock-induced spurious signals (for example, microphonics in audio applications).
Not susceptible to breakage of a glass envelope, leakage, outgassing, and other physical damage.
No cathode heater (which produces the characteristic orange glow of tubes), reducing power consumption, eliminating delay as tube heaters warm-up, and immune from cathode poisoning and depletion.
Very small size and weight, reducing equipment size.
Large numbers of extremely small transistors can be manufactured as a single integrated circuit.
Low operating voltages compatible with batteries of only a few cells.
BFQ149,115 Applications
as a switch
as an amplifier
