Transistor 2N3709

Transistor 2N3709 NPN, 30mA TO-92

Transistors

Reference: TR2N3709

Part.No: 2N3709

€1.20

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The 2N3709 is a silicon NPN Bipolar Junction Transistor (BJT) in a TO-92 package, designed for low-level, high-gain audio-frequency amplification and small-signal switching.

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Description
Product Details

2N3709 High-Gain NPN Transistor - Low-Level Signal Amplification

The 2N3709 is a silicon NPN small-signal transistor housed in the classic TO-92 through-hole package, part of the Central Semiconductor 2N3707/3708/3709/3710/3711 family. It is engineered specifically for low-level, high-hFE audio-frequency applications such as preamplifier front-ends and low-noise signal stages, making it a solid choice for hobbyists restoring vintage audio gear or building linear amplifier circuits.

Functions & Applications

High DC Current Gain (hFE): Optimized for low-level applications requiring strong signal amplification from weak sources.
Low-Noise Audio Design: Part of a family developed for low-noise, low-level amplifier stages in audio circuits.
Standard TO-92 Package: Compact through-hole form factor, easy to solder and prototype on breadboards.
Complementary PNP Available: Pairs with the 2N4058 series for push-pull or complementary amplifier designs.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	30V
Max Collector Current (Ic)	30mA
Application	Low-level, high-gain amplification
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: What is the complementary PNP part for the 2N3709?
A: The recommended complementary PNP series is the 2N4058.

Q: Is the 2N3709 suitable for switching applications, or only amplification?
A: It is optimized as a low-level, high-gain amplifier for audio-frequency stages, though it can also be used for light small-signal switching within its 30mA / 30V ratings.

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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