Transistor BF495 NPN, RF/IF TO-92

Transistor BF495 NPN, RF/IF TO-92

Transistors

Reference: TRBF495

Part.No: BF495

€1.00

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The BF495 is a high-gain NPN Bipolar Junction Transistor (BJT) in a TO-92 package, purpose-built for RF and IF amplification in amateur radio, oscillators and mixers. A proven choice for hobbyist AM/FM receiver and transmitter designs.

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Description
Product Details

BF495 RF/IF Transistor – High-Gain NPN for Radio Frequency Circuits

The BF495 is a specialized NPN small-signal transistor optimized for RF and intermediate frequency (IF) applications. With excellent high-frequency gain characteristics and low noise performance, it is the go-to transistor for amateur radio builders, oscillators, mixers, and direct-conversion receivers. Its TO-92 package makes breadboarding and prototyping quick and affordable.

Functions & Applications

RF/IF Optimized: Specifically designed for radio frequency and intermediate frequency stages with high linearity across the frequency band.
High Frequency Gain: Excellent current gain (hFE) maintained even at VHF frequencies, ideal for mixer and oscillator circuits.
Low Noise Performance: Suitable for sensitive low-noise preamplifiers and direct-conversion receiver front ends.
TO-92 Package: Breadboard-friendly through-hole design, economical and easy to source.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-92
Max Collector-Emitter Voltage (Vceo)	30V
Max Collector Current (Ic)	100mA
Power Dissipation (Pd)	250mW
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: Is the BF495 pinout the same as a BC547?
A: No. The BF495 uses a BEC (Base-Emitter-Collector) pinout, unlike the standard CBE arrangement of the BC547. Always verify the exact pinout from the datasheet before soldering to avoid damage.

Q: Can I use BF495 as a direct replacement for BF494?
A: The BF495 and BF494 are very similar and often interchangeable in oscillator and mixer circuits. However, check the specific circuit requirements and gain specifications before substituting.

Notes

Pinout differs from common small-signal transistors (BC547, BC337). Verify BEC order before soldering. Designed for VHF RF/IF applications; not suitable for audio preamplifiers or general-purpose switching.

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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