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