BUL39D BUL39D is an NPN bipolar transistor from STMicroelectronics rated for 450V collector-emitter voltage and 4A collector current. It is packaged in a TO-220-3 through-hole package.
Mfr Part #:

BUL39D

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
BUL39D is an NPN bipolar transistor from STMicroelectronics rated for 450V collector-emitter voltage and 4A collector current. It is packaged in a TO-220-3 through-hole package.
Total Stock: 3,434 pcs
$ Price Range: $0.28

BUL39D Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,806 pcs
1806 pcs On Request 1 On Request On Request 06+ On Request On Request
Non-Authorised Inventory information
1,628 pcs
1628 pcs On Request 1 On Request On Request On Request On Request On Request

BUL39D Specifications Quick View

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

BUL39D Description

Short technical summary and product information.

The BUL39D is an NPN bipolar junction transistor designed for general-purpose switching and linear amplification applications. It features a collector-emitter voltage rating of 450V, a continuous collector current of 4A, and a power dissipation of 70W. The DC current gain (hFE) is a minimum of 10 at 10mA collector current and 5V Vce, and the collector-emitter saturation voltage is 1.1V maximum at 500mA base current and 2.5A collector current. The transistor is housed in a TO-220-3 through-hole package, suitable for mounting on a heatsink if needed. The maximum junction temperature is 150°C.

BUL39D Quick Information

Product Type: Bipolar Junction Transistor (BJT) - Single
Canonical Name: STMicroelectronics BUL39D NPN Bipolar Transistor, 450V Vceo, 4A Ic, TO-220-3
Subcategory: Single NPN

BUL39D Compliance

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

BUL39D Estimated Pricing

Qty Low High
3,000+ $0.28 $0.28

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

BUL39D Features

  • NPN silicon bipolar transistor.
  • 450V collector-emitter voltage rating.
  • 4A continuous collector current.
  • 70W power dissipation capability.
  • TO-220-3 through-hole package.

BUL39D Applications

  • General purpose switching and amplification.
  • Linear voltage regulator circuits.
  • Power supply output stages.
  • High voltage switching applications.

BUL39D FAQs

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

450V.

What is the collector current rating?

4A.

What is the power dissipation?

70W.

What is the package type?

TO-220-3.

What is the maximum junction temperature?

150°C (TJ).

What is the DC current gain?

Minimum hFE of 10 at Ic=10mA, Vce=5V.

What is the collector-emitter saturation voltage?

1.1V maximum at Ib=500mA, Ic=2.5A.

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