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

BFY51

Available from 1 distributors
Mfr Name: FRD
FRD
The BFY51 is an NPN transistor from FRD designed for general-purpose linear and switching applications. It features a TO-39 metal case.
✓ Total Stock: 368 pcs
$ Price Range: $0.99

BFY51 Available from 1 distributor

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✓ Non-Authorised
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368 pcs
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BFY51 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
SVHC Present

BFY51 Description

Short technical summary and product information.

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

 

Key electrical characteristics include a maximum collector current of 1A and a collector-emitter breakdown voltage (VCEO) of 35V for the BFY51 variant. The maximum collector-base voltage (VCBO) is 80V. It offers a DC current gain (hFE) ranging from 15 to 40 depending on the operating conditions.

 

Thermal specifications include a total power dissipation of 0.8W at ambient temperature and 5W at case temperature, with a junction-to-case thermal resistance of 35°C/W. The maximum operating junction temperature is 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+ $0.99 $0.99

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

BFY51 Features

  • NPN medium power amplifier transistor.
  • Designed for linear and switching applications.
  • Maximum collector current is 1A.
  • Collector-emitter voltage is 35V.
  • Housed in a TO-39 metal case.

BFY51 Applications

  • General purpose industrial applications.
  • Linear amplification circuits.
  • Switching power supply circuits.
  • Signal processing applications.

BFY51 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum collector current for the BFY51 transistor?

The maximum collector current for the BFY51 transistor is 1A.

What is the collector-emitter breakdown voltage (VCEO) for the BFY51?

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

What is the package type for the BFY51 transistor?

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

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

The maximum power dissipation of the BFY51 at 25°C case temperature is 5W.

What is the typical DC current gain (hFE) of the BFY51 at IC=150mA and VCE=10V?

The minimum DC current gain (hFE) of the BFY51 at IC=150mA and VCE=10V is 15.

What is the transition frequency (fT) for the BFY51?

The transition frequency (fT) for the BFY51 is 50MHz at IC=50mA and VCE=10V.

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