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BC517 The BC517 is an NPN Darlington transistor with a collector-emitter voltage of 30V and continuous collector current of 1.2A. It offers a minimum DC current gain of 30,000 and comes in a TO-92 through-hole package.
Mfr Part #:

BC517

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The BC517 is an NPN Darlington transistor with a collector-emitter voltage of 30V and continuous collector current of 1.2A. It offers a minimum DC current gain of 30,000 and comes in a TO-92 through-hole package.
✓ Total Stock: 474 pcs

BC517 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
Braun Electronic Components ✓
Non-Authorised Inventory information
237 pcs
On Request
237 pcs On Request 1 On Request On Request On Request On Request On Request
Emiteli ✓
Non-Authorised Inventory information
237 pcs
On Request
237 pcs On Request 1 On Request On Request On Request On Request On Request
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BC517 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
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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BC517 Description

Short technical summary and product information.

The BC517 is an NPN Darlington transistor designed for applications requiring extremely high current gain at currents up to 1.0A. It features a collector-emitter voltage (VCEO) of 30V, collector-base voltage (VCBO) of 40V, and emitter-base voltage (VEBO) of 10V. The continuous collector current is rated at 1.2A, with a power dissipation of 625mW.

 

This device provides a minimum DC current gain (hFE) of 30,000 at Vce=2V and Ic=20mA, making it suitable for high-gain amplification and switching applications. The collector-emitter saturation voltage is a maximum of 1V at Ib=100µA and Ic=100mA, and the typical base-emitter on voltage is 1.4V at Ic=10mA and Vce=5V.

 

The BC517 is housed in a TO-226-3 / TO-92-3 long body package with through-hole mounting, suitable for general-purpose circuit boards. It operates over a junction temperature range of -55°C to 150°C, with thermal resistance from junction to ambient of 200°C/W and junction to case of 83.3°C/W.

BC517 Quick Information

Product Type: NPN Darlington Transistor
Canonical Name: BC517 NPN Darlington Transistor
Subcategory: Single NPN Darlington

BC517 Compliance

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

BC517 Features

  • NPN Darlington transistor with high current gain.
  • 30V collector-emitter voltage rating.
  • 1.2A continuous collector current capability.
  • Through-hole TO-92 package for easy mounting.
  • 625mW power dissipation at 25°C.

BC517 Applications

  • Ideal for high-gain amplification circuits.
  • Used in switching loads up to 1A.
  • Suitable for Darlington pair driver stages.
  • Common in general-purpose signal amplification.

BC517 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage (VCEO) of the BC517?

The BC517 has a collector-emitter voltage (VCEO) of 30V.

What is the continuous collector current rating of the BC517?

The continuous collector current is 1.2A.

What is the minimum DC current gain (hFE) of the BC517?

The minimum DC current gain is 30,000 at Vce=2V and Ic=20mA.

What is the power dissipation of the BC517?

The BC517 has a power dissipation of 625mW at 25°C.

What is the operating junction temperature range of the BC517?

The operating junction temperature range is -55°C to 150°C.

What package is the BC517 available in?

The BC517 is available in a TO-226-3 / TO-92-3 long body package with through-hole mounting.

Is the BC517 RoHS compliant?

The existing data indicates RoHS3 compliance, but this is unverified and there is a conflict with distributor data. Please verify with the manufacturer.

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