Transistor BF254 NPN, RF/IF Amplifier TO-92

Transistor BF254 NPN, RF/IF Amplifier TO-92

Transistors

Reference: TRBF254

Part.No: BF254

€1.00

In Stock

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The BF254 is a classic NPN BJT in TO-92 package, purpose-designed for AM intermediate frequency (IF) amplification at 455 kHz. A trusted workhorse in vintage radio design and RF/IF signal processing.

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Description
Product Details

BF254 NPN Transistor – Classic AM IF Amplifier for Vintage & Modern Radio Design

The BF254 is a legendary NPN transistor developed for mass-production AM radio receivers, particularly optimized for intermediate frequency amplification at 455 kHz. Its stable gain and predictable behavior at RF/IF frequencies have made it a standard choice for radio enthusiasts, vintage radio restoration, and educational RF circuit design.

Functions & Applications

Optimized for IF Amplification: Stable gain and excellent linearity at 455 kHz AM intermediate frequency.
Robust RF Performance: Reliable small-signal amplification across RF and IF frequency ranges with predictable characteristics.
Standard TO-92 Package: Through-hole design, easy integration into breadboards and vintage radio PCBs.
Complementary Pairing: Often used alongside the BF255 (mixer/oscillator) in complete AM receiver chains.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	20V
Max Collector Current (Ic)	50mA
Power Dissipation (Pd)	200mW
Optimized Frequency	455 kHz (AM IF)

Frequently Asked Questions

Q: What is the difference between the BF254 and BF255?
A: The BF254 is optimized for IF amplification (455 kHz) in AM receivers, while the BF255 is designed for mixer and oscillator stages. They are complementary and often used together in complete AM radio circuits.

Q: Can I use the BF254 in modern RF circuit design?
A: Yes, although it is most famous for vintage radio, the BF254 can be used in modern low-frequency RF applications and educational projects. For high-frequency designs, specialized RF transistors are recommended.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-92

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