Siemens manuals, page 9
SIEMENS BFQ 82 handbook
BFQ 82 is an NPN silicon RF transistor suitable for low-noise, high-gain amplifiers up to 2 GHz. It features linear broadband applications and a hermetically sealed ceramic package.
SIEMENS BFQ 81 handbook
BFQ 81 is an NPN Silicon RF transistor suitable for low-noise amplifiers up to 2GHz and broadband analog and digital applications. It operates at collector currents ranging from 0.5mA to 20mA.
SIEMENS BFQ 75 handbook
SIEMENS BFQ 74 handbook
SIEMENS BFQ 73S handbook
SIEMENS BFQ 72 handbook
SIEMENS BFQ 71 handbook
SIEMENS BFQ 70 handbook
SIEMENS BFQ 69 handbook
SIEMENS BFQ 64 handbook
SIEMENS BFQ 60 handbook
SIEMENS BFQ 29P handbook
BFQ 29P is a NPN silicon RF transistor, with a maximum collector-emitter voltage of 15V, a maximum emitter-base voltage of 3V, a maximum collector current of 30mA, a maximum collector-base voltage of 20V, a maximum base current of 4mA, and a working temperature range of -65...+150℃. The package is SOT-23.
SIEMENS BFQ 28 handbook
SIEMENS BFQ193 handbook
BFQ 193 NPN Silicon RF Transistor is a low-noise, high-gain amplifier produced by Semiconductor Group and can be used for applications in the 2GHz range
SIEMENS TDA 4601 handbook
The TDA 4601 is a control IC designed for switched-mode power supplies. It is used for driving, controlling and protecting the switching transistor in self-oscillating flyback converter power supplies as well as for protecting the overall power supply unit. In case of disturbance, the rise of the secondary voltage is prevented.