2N4340 The 2N4340 is an N-Channel JFET from Central Semiconductor in a TO-18 metal can package. It offers a maximum drain-source voltage of 50V, drain current of 1.2 to 3.6 mA, and low noise figure of 1 dB.
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2N4340

Available from 1 distributors
Mfr Name: Central Semiconductor Corp
Central Semiconductor Corp
The 2N4340 is an N-Channel JFET from Central Semiconductor in a TO-18 metal can package. It offers a maximum drain-source voltage of 50V, drain current of 1.2 to 3.6 mA, and low noise figure of 1 dB.
Total Stock: 3,566 pcs

2N4340 Available from 1 distributor

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2N4340 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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2N4340 Description

Short technical summary and product information.

The 2N4340 is a silicon N-Channel JFET from Central Semiconductor Corp, mounted in a hermetically sealed TO-18 metal can package (TO-206AA, TO-18-3). It is designed for low-level, low noise amplifier applications.

 

Electrical characteristics include a maximum drain-source, gate-source, and gate-drain voltage of 50V, with a gate current limit of 50 mA. The drain current (Idss) ranges from 1.2 to 3.6 mA at Vds=15V, and total power dissipation is 325 mW. The gate-source cutoff voltage (Vgs(off)) is between 1.0 and 3.0V.

 

The JFET exhibits a forward transconductance of 1.3 to 3.0 mS and low input capacitance of 6.0 pF and reverse transfer capacitance of 2.0 pF. The noise figure is typically 1.0 dB at 1 kHz with a 1 MΩ source resistance. The device operates over a junction temperature range of -65 to +200 °C.

 

This through-hole device is suitable for RF and low-level signal processing where low noise and hermetically sealed reliability are required.

2N4340 Quick Information

Product Type: JFET (Junction Field-Effect Transistor)
Series: 2N4338 Series
Canonical Name: 2N4340 N-Channel JFET
Subcategory: N-Channel JFET

2N4340 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

2N4340 Features

  • N-Channel JFET in TO-18 metal can package.
  • Maximum drain-source voltage rating of 50V.
  • Low noise figure of 1.0 dB at 1kHz.
  • Drain current range of 1.2 to 3.6 mA.
  • Operating temperature range -65 to +200 °C.

2N4340 Applications

  • Ideal for low-level, low noise amplifier circuits.
  • Suitable for RF front-end stages.
  • Used in hermetically sealed metal case applications.

2N4340 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum operating voltage of the 2N4340?

The maximum drain-source, gate-source, and gate-drain voltages are all 50V.

What package is the 2N4340 available in?

The 2N4340 is available in a TO-206AA/TO-18-3 Metal Can through-hole package (TO-18).

What is the operating and storage temperature range?

The operating and storage junction temperature range is -65 to +200 °C.

Is the 2N4340 RoHS compliant?

The 2N4340 is listed as RoHS3 Compliant, but this information is unverified and should be reviewed.

What is the drain current (Idss) range of the 2N4340?

The drain current (Idss) ranges from 1.2 to 3.6 mA at Vds=15V and Vgs=0V.

What is the noise figure of the 2N4340?

The noise figure is a maximum of 1.0 dB at Vds=15V, f=1.0 kHz, Rg=1.0 MΩ.

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