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2N2857 The 2N2857 is a silicon NPN transistor designed for UHF equipment, suitable for low noise amplifier, oscillator, and mixer applications. It is packaged in a TO-72 case.
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2N2857

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The 2N2857 is a silicon NPN transistor designed for UHF equipment, suitable for low noise amplifier, oscillator, and mixer applications. It is packaged in a TO-72 case.
✓ Total Stock: 94 pcs
$ Price Range: $0.77

2N2857 Available from 1 distributor

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2N2857 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
Mounting Type
Noise Figure
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2N2857 Description

Short technical summary and product information.

The 2N2857 is a silicon NPN transistor designed for UHF equipment applications. It is particularly well-suited for use in low noise amplifiers, oscillators, and mixer circuits. The transistor features a Collector-Emitter Voltage (VCEO) of 15V and a maximum Collector Current (IC) of 40mA.

 

With a Current-Gain Bandwidth Product (fT) of 1.6 GHz at 5mA IC and a typical Maximum Unilateral Gain (GU max) of 13 dB at 500 MHz, the 2N2857 is engineered for high-frequency performance. It is housed in a TO-72 package, suitable for through-hole mounting.

 

Key electrical specifications include a Collector-Base Voltage (VCBO) of 30V and an Emitter-Base Voltage (VEBO) of 2.5V. The device offers a DC Current Gain (HFE) ranging from 30 to 150. Thermal data indicates a Junction-to-Case Thermal Resistance (RTH(J-C)) of 0.88 ºC/mW.

2N2857 Quick Information

Product Type: Bipolar Transistor
Canonical Name: 2N2857 Silicon NPN Transistor
Subcategory: Single, Pre-Biased

2N2857 Compliance

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

2N2857 Estimated Pricing

Qty Low High
1+ $0.77 $0.77

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

2N2857 Features

  • Silicon NPN UHF transistor.
  • TO-72 packaged for through-hole mounting.
  • 1.6 GHz current-gain bandwidth product.
  • 13 dB typical unilateral gain at 500 MHz.
  • Suitable for low noise amplifier applications.

2N2857 Applications

  • Designed for UHF equipment.
  • Used in low noise amplifiers.
  • Suitable for oscillator circuits.
  • Applicable for mixer circuits.

2N2857 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum Collector-Emitter Voltage for the 2N2857?

The maximum Collector-Emitter Voltage (VCEO) for the 2N2857 is 15 V.

What is the maximum Collector Current of the 2N2857 transistor?

The maximum Collector Current (IC) for the 2N2857 is 40 mA.

What is the package type for the 2N2857?

The 2N2857 is supplied in a TO-72 package.

What is the Current-Gain Bandwidth Product of the 2N2857?

The Current-Gain Bandwidth Product (fT) for the 2N2857 is 1.6 GHz.

What is the typical Noise Figure for the 2N2857?

The typical Noise Figure (NF) for the 2N2857 is 5.5 dB.

What is the typical Maximum Unilateral Gain of the 2N2857?

The typical Maximum Unilateral Gain (GU max) for the 2N2857 is 13 dB.

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