2N3771 2N3771 is an NPN silicon power transistor by STMicroelectronics rated for 40V VCEO, 30A continuous collector current, and 150W power dissipation in a TO-3 chassis-mount package.
Mfr Part #:

2N3771

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
2N3771 is an NPN silicon power transistor by STMicroelectronics rated for 40V VCEO, 30A continuous collector current, and 150W power dissipation in a TO-3 chassis-mount package.
Total Stock: 4 pcs
$ Price Range: $1.35

2N3771 Available from 1 distributor

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2N3771 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base Current - Continuous (IB)
Collector Cutoff Current (ICEO)
Collector-Emitter Sustaining Voltage (VCEO(sus))
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Emitter-Base Voltage (VEB)
Frequency
Mounting Type
Operating Junction Temperature Range (TJ)
Power
Storage Temperature
Supplier Device Package
Thermal Resistance Junction-to-Case (RθJC)
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

2N3771 Description

Short technical summary and product information.

The 2N3771 is a high-power NPN silicon bipolar junction transistor designed for linear amplifiers, series pass regulators, and inductive switching applications.

 

Key electrical ratings include a maximum collector-emitter voltage (VCEO) of 40 V, continuous collector current of 30 A, and total device dissipation of 150 W at 25°C case temperature. The device offers a minimum DC current gain (hFE) of 15 at Ic=15 A / Vce=4 V and a typical transition frequency of 200 kHz.

 

The transistor is housed in a TO-204AA (TO-3) metal package intended for chassis mounting, ensuring efficient heat transfer. The operating junction temperature range spans -65°C to +200°C with a thermal resistance junction-to-case of 1.17°C/W. The part is RoHS3 compliant and Pb-free as per the datasheet.

2N3771 Quick Information

Product Type: Bipolar Transistor
Canonical Name: 2N3771 NPN Silicon Power Transistor
Subcategory: NPN Single

2N3771 Compliance

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

2N3771 Estimated Pricing

Qty Low High
600+ $1.35 $1.35

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

2N3771 Features

  • 40V maximum collector-emitter voltage.
  • 30A continuous collector current rating.
  • 150W power dissipation capability.
  • TO-3 chassis mount package.
  • RoHS3 compliant and Pb-free.

2N3771 Applications

  • Used in linear amplifier circuits.
  • Ideal for series pass regulators.
  • Suitable for inductive switching applications.

2N3771 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage (VCEO) of the 2N3771?

The maximum VCEO is 40 V.

What is the maximum continuous collector current rating?

The maximum continuous collector current is 30 A.

What is the power dissipation rating of this transistor?

The maximum power dissipation is 150 W at 25°C case temperature.

What package does the 2N3771 come in?

The 2N3771 is available in a TO-204AA, TO-3 package for chassis mounting.

What is the operating junction temperature range?

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

Is the 2N3771 RoHS compliant?

Yes, the 2N3771 is RoHS3 compliant and Pb-free per the datasheet.

What is the minimum DC current gain (hFE) of the 2N3771?

The minimum hFE is 15 at Ic=15 A and Vce=4 V.

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