2N4858 N-Channel JFET with 40V maximum drain-source voltage, 8mA typical drain current, and 60Ω drain-source resistance in a TO-18 through-hole package.
Mfr Part #:

2N4858

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
N-Channel JFET with 40V maximum drain-source voltage, 8mA typical drain current, and 60Ω drain-source resistance in a TO-18 through-hole package.
✓ Total Stock: 15,000 pcs
$ Price Range: $60.16

2N4858 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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15,000 pcs
15000 pcs On Request 1 On Request On Request On Request On Request On Request

2N4858 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Drain to Source Voltage (Vdss)
FET Type
Input Capacitance (Ciss) (Max) @ Vds
Mounting Type
Operating Temperature
Power
Resistance
Supplier Device Package
Tape & Reel
Voltage

2N4858 Description

Short technical summary and product information.

The 2N4858 is an N-Channel JFET from Microchip Technology designed for general-purpose switching and amplification applications. It features a maximum drain-to-source voltage of 40V and a typical drain current of 8mA at Vds=15V. The device offers a nominal drain-source resistance of 60Ω and a maximum input capacitance of 18pF at Vds=10V.

 

With a maximum power dissipation of 360mW and an operating junction temperature range of -65°C to 200°C, this JFET is suitable for a wide range of environments. The part is housed in a TO-206AA / TO-18-3 metal can package and is through-hole mountable, making it compatible with standard PCB assembly processes.

 

This JFET is commonly used in low-frequency analog circuits, signal switching, and voltage-controlled resistor applications. Its robust thermal characteristics and compact TO-18 package allow for reliable performance in both commercial and industrial designs.

2N4858 Quick Information

Product Type: JFET
Canonical Name: 2N4858 N-Channel JFET
Subcategory: N-Channel JFET

2N4858 Compliance

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

2N4858 Estimated Pricing

Qty Low High
1+ $60.16 $60.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

2N4858 Features

  • N-Channel JFET for switching and amplification.
  • 40V maximum drain-to-source voltage rating.
  • 8mA typical drain current at 15V.
  • 60Ω nominal drain-source resistance.
  • TO-18 through-hole metal can package.

2N4858 Applications

  • Used in low-frequency analog signal switching.
  • Suitable for voltage-controlled resistor circuits.
  • Ideal for general-purpose amplifier stages.
  • Applicable in industrial control systems.

2N4858 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum drain-source voltage of the 2N4858?

The maximum drain-source voltage (Vdss) is 40V.

What is the typical drain current of the 2N4858?

The typical drain current (Idss) is 8mA at Vds=15V, Vgs=0V.

What is the package type of the 2N4858?

The 2N4858 is available in a TO-206AA / TO-18-3 metal can package (through-hole).

What is the operating temperature range of the 2N4858?

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

What is the RoHS status of the 2N4858?

The part is listed as RoHS3 Compliant, but this is unverified.

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