BST50,115 BST50,115 is an NPN Darlington transistor from Nexperia USA Inc. rated for 45V collector-emitter voltage and 1A collector current, in a SOT-89 surface-mount package.
Mfr Part #:

BST50,115

Available from 2 distributors
Mfr Name: Nexperia USA Inc.
Nexperia USA Inc.
BST50,115 is an NPN Darlington transistor from Nexperia USA Inc. rated for 45V collector-emitter voltage and 1A collector current, in a SOT-89 surface-mount package.
Total Stock: 3,090 pcs
$ Price Range: $0.25 - $1.26

BST50,115 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
3,000 pcs
3000 pcs On Request 1 On Request On Request 23+ On Request On Request
Non-Authorised Inventory information
90 pcs
90 pcs On Request 1 On Request On Request On Request On Request On Request

BST50,115 Specifications Quick View

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

BST50,115 Description

Short technical summary and product information.

The BST50,115 is an NPN Darlington transistor manufactured by Nexperia USA Inc. It combines two bipolar transistors in a Darlington configuration to achieve a high DC current gain of at least 2000 at 500mA collector current and 10V collector-emitter voltage. The device is rated for a maximum collector-emitter breakdown voltage of 45V and a maximum collector current of 1A, with a maximum power dissipation of 1.3W.

 

The transistor offers a transition frequency of 200MHz and a maximum collector-emitter saturation voltage of 1.3V at 500µA base current and 500mA collector current. It is designed for surface-mount assembly in the TO-243AA package, also known as the SOT-89 supplier device package, which provides a compact footprint suitable for space-constrained PCB designs.

 

With its high current gain, the BST50,115 is well-suited for applications requiring high sensitivity or low base-drive requirements, such as relay drivers, solenoid drivers, and other switching circuits where a small input current must control a larger load current. The device operates with a maximum junction temperature of 150°C, supporting use in a range of ambient temperature environments.

 

The SOT-89 package includes a tab for improved thermal performance, aiding heat dissipation in power-switching applications. The surface-mount format is compatible with standard reflow soldering processes, facilitating automated assembly in high-volume manufacturing.

BST50,115 Quick Information

Product Type: Darlington Transistor
Canonical Name: NPN Darlington Transistor, 45V, 1A, SOT-89
Subcategory: Single Darlington Transistor

BST50,115 Compliance

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

BST50,115 Estimated Pricing

Qty Low High
1+ $1.26 $1.26
10+ $0.87 $0.87
100+ $0.55 $0.55
500+ $0.34 $0.34
1,000+ $0.25 $0.25

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

BST50,115 Features

  • NPN Darlington configuration for high gain.
  • Rated for 45V collector-emitter voltage.
  • Supports up to 1A collector current.
  • Surface-mount SOT-89 package design.
  • Minimum DC current gain of 2000.

BST50,115 Applications

  • Ideal for relay and solenoid drivers.
  • Used in low-side switching circuits.
  • Suitable for high-gain amplifier stages.
  • Works in motor control applications.

BST50,115 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BST50,115?

The maximum collector-emitter breakdown voltage is 45V.

What is the maximum collector current rating?

The maximum collector current is 1A.

What is the power dissipation rating of this transistor?

The maximum power dissipation is 1.3W.

What package is the BST50,115 available in?

It is available in the TO-243AA package, also known as the SOT-89 supplier device package, for surface-mount assembly.

What is the maximum junction operating temperature?

The maximum junction operating temperature is 150°C.

Is the BST50,115 RoHS compliant?

The RoHS status is listed as RoHS3 compliant, but this is unverified and should be confirmed with the manufacturer or distributor.

Home
Account

Categories