BF495 Pinout, Equivalent, Application, Datasheet

The BF495 is an NPN medium-frequency transistor designed for low-power amplification and signal processing tasks. This article explains the BF495 pinout, key features, electrical specifications, working principle, applications, and suitable equivalents in a clear and consistent format.

Introduction

The BF495 is a general-purpose NPN bipolar junction transistor commonly used in medium-frequency amplifier stages. It is suitable for audio, RF, and signal conditioning circuits where moderate gain, stable performance, and low power dissipation are required. Its TO-92 package allows easy integration into compact electronic designs.

Pin Configuration / Pinout of BF495 Transistor

Understanding the BF495 Pinout Configuration

The BF495 comes in a TO-92 package with a B-E-C pin configuration when viewed from the flat side:

Correct identification of the BF495 pinout ensures proper biasing and prevents damage during circuit assembly.

Note: DATASHEET DOWNLOAD button is provided end of this article.

BF495 Key Features

• NPN medium-frequency bipolar transistor
• Designed for low-power signal amplification
• Stable DC current gain characteristics
• Suitable for RF and audio frequency applications
• Compact TO-92 through-hole package
• Reliable performance in consumer electronics

BF495 Specifications/Characteristics

• Collector-Emitter Voltage (Vceo): 20V
• Collector-Base Voltage (Vcbo): 30V
• Emitter-Base Voltage (Vebo): 5V
• Collector Current (Ic): 30mA
• Peak Collector Current (Icm): 30mA
• Total Power Dissipation (Ptot): 300mW
• Junction Temperature (Tj): 150°C
• Storage Temperature (Tstg): −65°C to 150°C
• DC Current Gain (hFE): 125
• Transition Frequency (fT): 120MHz

Key Applications of BF495 Transistor

• Audio preamplifier stages
• Medium-frequency RF amplifiers
• Signal amplification and conditioning
• Oscillator circuits
• Educational and hobby electronics projects

BF495 Equivalent / Alternatives

(Verify pin compatibility before using substitutions)

Equivalent Transistors: BF494, BF493
Alternative Transistors: BC547, 2N3904

More Circuit Layouts

Working Principle of BF495

The BF495 operates by using a small base current to control a larger collector current. When the base-emitter junction is forward biased, charge carriers flow from emitter to collector, allowing amplification of weak input signals. This operating principle makes the BF495 suitable for medium-frequency and small-signal amplification.

Frequently Asked Questions (FAQ)

Q1: What type of transistor is BF495?
BF495 is an NPN medium-frequency bipolar junction transistor.

Q2: What is the maximum collector current of BF495?
The maximum collector current is 30mA.

Q3: What is the BF495 pin configuration?
BF495 uses a B-E-C pinout in a TO-92 package.

Q4: Is BF495 suitable for RF applications?
Yes, with a transition frequency of 120MHz, it can be used in medium-frequency RF circuits.

Conclusion

The BF495 NPN medium-frequency transistor is a reliable choice for low-power amplification and signal processing applications. With stable gain, good frequency response, and a compact TO-92 package, it remains a practical component for audio, RF, and general-purpose electronic designs.

Datasheet of BF495 Transistor

Click the following Button below to download the datasheet of BF495 :

More projects, You may like:

• Video Transmitter DIY Homemade FM Radio Transmitter
• Adjustable Power Supply DIY Battery Charger
• 12V-220V 500 Watt inverter DIY Homemade
• MPPT Solar Charge Controller DIY Homemade
• DIY LA4440 bass amplifier homemade

For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuit, battery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!

Thank you for visiting the article.