BF494, NPN Medium Frequency Transistor, TO-92 Package

The BF494 is a silicon NPN medium frequency transistor encapsulated in a TO-92 plastic package. It is designed for low current and low voltage applications, making it ideal for use in high-frequency (HF) stages of radio and television receivers, FM tuners, low noise AM mixer-oscillators, and intermediate frequency (IF) amplifiers in AM/FM receivers. Its high transition frequency and low noise characteristics ensure efficient performance in signal amplification and processing tasks.

• Low Current Operation: Designed for applications with a maximum collector current of 30 mA.
• Low Voltage Requirements: Operates efficiently with a maximum collector-emitter voltage of 20 V.
• High Transition Frequency: Offers a transition frequency (f_T) of approximately 260 MHz, suitable for medium frequency applications.
• Compact TO-92 Package: Provides a small footprint for space-constrained designs.
• Low Noise Performance: Suitable for applications requiring low noise amplification.
• Wide Operating Temperature Range: Operates reliably within a junction temperature range up to 150°C.