2N2221 2N2221 is an NPN bipolar junction transistor from On Semiconductor. It features a 30V collector-emitter voltage rating, 800mA collector current, and 500mW power dissipation in a TO-18 through-hole package.
Mfr Part #:

2N2221

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
2N2221 is an NPN bipolar junction transistor from On Semiconductor. It features a 30V collector-emitter voltage rating, 800mA collector current, and 500mW power dissipation in a TO-18 through-hole package.
Total Stock: 4,007 pcs
$ Price Range: $0.33

2N2221 Available from 3 distributors

Authorised
Non-Authorised

2N2221 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Halogen Free
Lead Spacing
Mounting Type
Power
SVHC Present
Supplier Device Package
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

2N2221 Description

Short technical summary and product information.

The 2N2221 is a general-purpose NPN bipolar junction transistor manufactured by On Semiconductor. It is designed for low to medium power switching and amplification applications.

 

Key electrical specifications include a collector-emitter voltage (Vce) of 30V, a continuous collector current (Ic) rating of 800mA, and a power dissipation (Pd) of 500mW. The DC current gain (hFE) is a minimum of 40 at Ic=150mA and Vce=10V, with a maximum collector-emitter saturation voltage of 1.6V at Ib=50mA and Ic=500mA.

 

The transistor is housed in a TO-206AA / TO-18-3 metal can package and is intended for through-hole mounting. This package offers robust mechanical protection and good thermal performance for its power rating.

2N2221 Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Canonical Name: 2N2221 NPN Bipolar Transistor
Subcategory: Single NPN

2N2221 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected
Lead Free: No

2N2221 Estimated Pricing

Qty Low High
500+ $0.33 $0.33

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

2N2221 Features

  • NPN bipolar junction transistor design.
  • 30V collector-emitter voltage rating.
  • 800mA continuous collector current capability.
  • 500mW power dissipation handling.
  • TO-18 through-hole metal can package.

2N2221 Applications

  • General purpose switching circuits.
  • Signal amplification in audio stages.
  • Low power driver and interface circuits.
  • Used in prototyping and hobbyist projects.

2N2221 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating of the 2N2221?

The collector-emitter voltage (Vce) is rated at 30V.

What is the maximum collector current for the 2N2221?

The maximum continuous collector current (Ic) is 800mA.

What package does the 2N2221 come in?

The 2N2221 is available in a TO-206AA / TO-18-3 metal can through-hole package.

What is the power dissipation of the 2N2221?

The power dissipation (Pd) is 500mW.

What is the DC current gain (hFE) of the 2N2221?

The minimum DC current gain (hFE) is 40 at Ic=150mA and Vce=10V.

What is the saturation voltage of the 2N2221?

The maximum collector-emitter saturation voltage (Vce(sat)) is 1.6V at Ib=50mA and Ic=500mA.

Is the 2N2221 RoHS compliant?

The 2N2221 is listed as RoHS3 compliant, but this information is unverified and should be confirmed with the manufacturer.

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