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BFY51 The BFY51 is an NPN transistor from STMicroelectronics designed for general-purpose linear and switching applications. It features a TO-39 metal case.
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BFY51

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The BFY51 is an NPN transistor from STMicroelectronics designed for general-purpose linear and switching applications. It features a TO-39 metal case.
✓ Total Stock: 4 pcs
$ Price Range: $0.77

BFY51 Available from 1 distributor

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BFY51 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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BFY51 Description

Short technical summary and product information.

The STMicroelectronics BFY51 is a silicon planar epitaxial NPN transistor housed in a TO-39 metal case. It is designed for general-purpose linear and switching applications.

 

Key electrical characteristics include a maximum collector-emitter voltage (VCEO) of 30V and a maximum collector current (IC) of 1A. The device offers a maximum power dissipation (Pd) of 0.8W at an ambient temperature of 25°C, and 5W at a case temperature of 25°C. The DC current gain (hFE) varies with collector current and VCE, with minimum values ranging from 15 to 30.

 

Thermal properties include a junction-to-case thermal resistance of 35°C/W. The operating junction temperature can reach up to 200°C, with storage temperatures ranging from -65°C to 200°C.

 

This transistor is suitable for various industrial applications requiring medium power amplification and switching capabilities.

BFY51 Quick Information

Product Type: NPN Transistor
Canonical Name: BFY51 NPN Medium Power Amplifier Transistor
Subcategory: NPN

BFY51 Compliance

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

BFY51 Estimated Pricing

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1+ $0.77 $0.77

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

BFY51 Features

  • NPN silicon planar epitaxial transistor.
  • Designed for general purpose applications.
  • TO-39 metal case package.
  • Maximum collector current of 1A.
  • Maximum collector-emitter voltage of 30V.

BFY51 Applications

  • Used in switching circuits
  • Suitable for amplification applications
  • Ideal for low to medium power switching
  • Applicable in general-purpose electronic circuits

BFY51 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage for the BFY51 transistor?

The maximum collector-emitter voltage (VCEO) for the BFY51 transistor is 30V.

What is the maximum continuous collector current for the BFY51?

The maximum continuous collector current (IC) for the BFY51 is 1A.

What type of package is the BFY51 transistor in?

The BFY51 transistor is supplied in a TO-39 metal case.

What is the maximum power dissipation of the BFY51 at 25°C ambient temperature?

The maximum power dissipation (Ptot) for the BFY51 at an ambient temperature of 25°C is 0.8W.

What is the RoHS status of the BFY51 transistor?

The RoHS status of the BFY51 transistor is RoHS3 Compliant.

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