BC817-40LT3G BC817-40LT3G is an NPN general purpose transistor from onsemi. It features a 45V collector-emitter breakdown voltage and 500mA continuous collector current in a SOT-23-3 surface mount package.
Mfr Part #:

BC817-40LT3G

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
BC817-40LT3G is an NPN general purpose transistor from onsemi. It features a 45V collector-emitter breakdown voltage and 500mA continuous collector current in a SOT-23-3 surface mount package.
Total Stock: 1,107 pcs
$ Price Range: $0.04 - $0.17

BC817-40LT3G Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,000 pcs
1000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
107 pcs
107 pcs On Request 1 On Request On Request On Request On Request On Request

BC817-40LT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Base-Emitter On Voltage (Max)
Collector-Base Voltage (VCBO)
Collector-Emitter Voltage (VCEO)
Current
Current Gain Bandwidth Product (fT)
DC Current Gain (Minimum @ Ic=500 mA, Vce=1 V)
DC Current Gain (Minimum/Typical @ Ic=100 mA, Vce=1 V)
DC Current Gain (hFE) (Min) @ Ic, Vce
Delay Time (td)
Emitter-Base Voltage (VEBO)
Frequency
Halogen Free
Junction and Storage Temperature
Mounting Type
Operating Temperature
Output Capacitance (Cobo)
Power
Rise Time (tr)
SVHC Present
Storage Temperature
Supplier Device Package
Tape & Reel
Thermal Resistance Junction To Ambient (Maximum @ Alumina Substrate)
Thermal Resistance Junction To Ambient (Maximum @ FR -5 Board)
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

BC817-40LT3G Description

Short technical summary and product information.

The BC817-40LT3G is an NPN silicon general purpose transistor manufactured by onsemi. It is designed for general purpose switching and amplification applications.

 

Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 45V, a maximum collector-base voltage (VCBO) of 50V, and a continuous collector current rating of 500mA. The device offers a DC current gain (hFE) of 250 minimum at 100mA and 1V, with a typical gain range of 250-400. The current-gain bandwidth product (fT) is typically 100MHz.

 

The transistor is housed in a SOT-23-3 surface mount package (also known as TO-236-3 or SC-59). It is rated for operation over a junction temperature range of -65°C to +150°C. Maximum power dissipation is 300mW on an alumina substrate at 25°C ambient temperature.

 

The BC817-40LT3G is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant, making it suitable for environmentally sensitive designs.

BC817-40LT3G Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Series: BC817
Canonical Name: BC817-40LT3G NPN General Purpose Transistor
Subcategory: General Purpose Transistor

BC817-40LT3G Compliance

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

BC817-40LT3G Estimated Pricing

Qty Low High
1+ $0.17 $0.17
10+ $0.11 $0.11
100+ $0.07 $0.07
500+ $0.05 $0.05
1,000+ $0.04 $0.04
10,000+ $0.04 $0.04

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

BC817-40LT3G Features

  • NPN silicon general purpose transistor.
  • 45V maximum collector-emitter voltage.
  • 500mA continuous collector current rating.
  • 300mW power dissipation on alumina substrate.
  • Surface mount SOT-23-3 package.

BC817-40LT3G Applications

  • General purpose switching circuits.
  • Signal amplification in low-power designs.
  • Used in consumer and industrial electronics.
  • Suitable for portable and battery-powered devices.

BC817-40LT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage (VCEO) of the BC817-40LT3G?

The maximum collector-emitter voltage (VCEO) is 45V.

What is the maximum continuous collector current rating?

The maximum continuous collector current is 500mA.

What package type is the BC817-40LT3G available in?

It is available in a SOT-23-3 surface mount package (also known as TO-236-3 or SC-59).

What is the operating temperature range?

The operating junction temperature range is -65°C to +150°C.

Is the BC817-40LT3G RoHS compliant?

Yes, the device is RoHS compliant, Pb-Free, and Halogen Free/BFR Free.

What is the typical current-gain bandwidth product (fT)?

The typical current-gain bandwidth product (fT) is 100MHz at Ic=10mA, Vce=5V, f=100MHz.

What is the minimum DC current gain (hFE) at 100mA?

The minimum DC current gain (hFE) is 250 at Ic=100mA, Vce=1V.

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