BC817-40LT1G NPN silicon bipolar junction transistor rated for 45V collector-emitter voltage and 500mA continuous collector current in a SOT-23-3 surface-mount package.
Mfr Part #:

BC817-40LT1G

Available from 9 distributors
Mfr Name: On Semiconductor
On Semiconductor
NPN silicon bipolar junction transistor rated for 45V collector-emitter voltage and 500mA continuous collector current in a SOT-23-3 surface-mount package.
Total Stock: 352,575 pcs
$ Price Range: $0.04 - $0.21

BC817-40LT1G Available from 9 distributors

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217,020 pcs
217020 pcs On Request 1 On Request On Request On Request On Request On Request
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92,875 pcs
92875 pcs On Request 1 On Request On Request On Request On Request On Request
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33,000 pcs
33000 pcs On Request 1 On Request On Request On Request On Request On Request
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6,580 pcs
6580 pcs On Request 1 On Request On Request 13+ On Request On Request
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1,420 pcs
1420 pcs On Request 1 On Request On Request On Request On Request On Request
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1,342 pcs
$0.09
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0+ 0.09
1342 pcs $0.09
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0+ 0.09
1 On Request On Request On Request On Request On Request
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279 pcs
279 pcs On Request 1 On Request On Request 0445 On Request On Request
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55 pcs
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4 pcs
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BC817-40LT1G Specifications Quick View

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

BC817-40LT1G Description

Short technical summary and product information.

The BC817-40LT1G is an NPN silicon bipolar junction transistor manufactured by onsemi (formerly ON Semiconductor). It is designed for general-purpose amplification and switching applications.

 

Key electrical specifications include a collector-emitter breakdown voltage (VCEO) of 45V, collector-base voltage (VCBO) of 50V, and emitter-base voltage (VEBO) of 5.0V. The continuous collector current is rated at 500mA. Power dissipation is 225mW on FR-5 board and 300mW on alumina substrate at 25°C ambient temperature. The device can operate over a junction temperature range of -65°C to +150°C.

 

The transistor is housed in a SOT-23 (Case 318) surface-mount package, making it suitable for compact PCB designs. It is Pb-free, halogen-free/BFR-free, and RoHS compliant. The BC817-40LT1G is part of the BC817 series, with the '40' suffix indicating a specific DC current gain (hFE) classification.

BC817-40LT1G Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Series: BC817-40L
Canonical Name: BC817-40LT1G
Subcategory: Single BJT

BC817-40LT1G Compliance

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

BC817-40LT1G Estimated Pricing

Qty Low High
1+ $0.21 $0.21
10+ $0.12 $0.12
100+ $0.07 $0.07
500+ $0.05 $0.05
1,000+ $0.05 $0.05
3,000+ $0.04 $0.04

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

BC817-40LT1G Features

  • NPN silicon bipolar junction transistor.
  • Rated for 45V collector-emitter voltage.
  • Continuous collector current of 500mA.
  • Surface-mount SOT-23-3 package.
  • RoHS compliant and Pb-free design.

BC817-40LT1G Applications

  • General purpose switching and amplification.
  • Suitable for low-power driver circuits.
  • Ideal for portable electronics designs.
  • Used in signal processing stages.

BC817-40LT1G FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BC817-40LT1G?

45V

What is the package type of the BC817-40LT1G?

SOT-23 (Case 318) surface-mount package

What is the operating junction temperature range?

-65°C to +150°C

Is the BC817-40LT1G RoHS compliant?

Yes, it is Pb-free, halogen-free/BFR-free, and RoHS compliant.

What is the continuous collector current rating?

500mA

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