BC547

Single Bipolar Transistors Overview

The BC547 is an NPN epitaxial silicon transistor designed for switching and amplifier applications. It features a collector-emitter voltage (VCEO) of 45 V, a collector-base voltage (VCBO) of 50 V, and an emitter-base voltage (VEBO) of 6 V. The device supports a maximum DC collector current of 100 mA with a power dissipation rating of 500 mW. Electrical characteristics include a DC current gain (hFE) ranging from 110 to 800 depending on the sub-classification, a transition frequency (fT) of 300 MHz, and a collector cut-off current (ICBO) of 15 nA.

Single Bipolar Transistors Feature Summary

• Epitaxial silicon construction optimized for general-purpose switching and linear amplification tasks
• High-voltage capability suitable for various signal processing circuits
• Complementary pairing available within the broader BC546 through BC550 product family

Single Bipolar Transistors Applications

• General-purpose signal amplification
• Electronic switching circuits
• Audio pre-amplifier stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and packing method. Confirm that the component meets required RoHS compliance standards for your region. Ensure the selected hFE classification matches the circuit design requirements. Validate authenticity through authorized distribution channels to avoid counterfeit components.

Single Bipolar Transistors Selection Notes

Select the appropriate hFE bin based on the required gain stability for the application. Consider the thermal management capabilities given the 500 mW power dissipation limit. Evaluate the operating temperature range to ensure reliability under expected environmental conditions. Compare alternative part numbers if specific packaging or lead configurations are mandatory.

Single Bipolar Transistors Part Context

This component belongs to the BC546/BC547/BC548/BC549/BC550 series of NPN epitaxial silicon transistors originally developed by Fairchild Semiconductor and now managed by ON Semiconductor. The series provides a range of voltage and gain options, with the BC547 serving as a standard high-gain, medium-voltage option in this lineup.

Single Bipolar Transistors Replacement Considerations

• BC547B
• BC547CTA

Single Bipolar Transistors FAQ

What is the maximum collector-emitter voltage for the BC547?

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

Does the BC547 have a complementary PNP counterpart?

Yes, it is complemented by the BC557 PNP transistor.

What is the typical noise figure for the BC547?

The noise figure ranges from 2.0 dB to 10.0 dB at VCE = 5 V, IC = 200 μA, and f = 1 kHz.