BC548BBU

Single Bipolar Transistors Overview

The BC548BBU is a small signal NPN silicon bipolar junction transistor manufactured by Fairchild Semiconductor. It features a maximum collector current of 0.1 A and a collector-emitter breakdown voltage of 30 V. The device utilizes a TO-92 lead-free package with three pins. It exhibits a minimum DC current gain (hFE) of 200 at 2 mA and 5 V. The component supports an operating temperature range up to 150 °C and complies with RoHS standards.

Single Bipolar Transistors Feature Summary

• Designed for general-purpose switching and amplifier applications
• Utilizes low-noise NPN epitaxial silicon planar design
• Provides high DC current gain for signal amplification
• Compatible with complementary PNP devices in the BC55x series

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Electronic switching applications
• Complementary pairs with BC557B transistors

Single Bipolar Transistors Procurement Notes

Verify that the specific BC548BBU part number matches the required hFE binning grade, as suffixes indicate gain ranges. Confirm the manufacturer origin, as Fairchild Semiconductor assets are now managed by ON Semiconductor. Ensure the package type corresponds to the BU designation and check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN transistor with moderate voltage ratings and high current gain is required. The BC548B variant offers higher gain than the 'A' version but lower breakdown voltage than the BC546 or BC547 series. Consider the thermal dissipation limits and ensure the application does not exceed the 0.1 A continuous collector current rating.

Single Bipolar Transistors Part Context

The BC548B belongs to a widely used family of NPN general-purpose transistors. The 'BU' suffix typically denotes a specific tape-and-reel packaging format or manufacturing batch code within the Fairchild product line. This component serves as a fundamental building block in analog electronics, often paired with its PNP counterpart, the BC557B, for push-pull configurations.

Single Bipolar Transistors Replacement Considerations

• BC548BTA
• BC548BTW

Single Bipolar Transistors FAQ

What is the difference between BC548B and BC548C?

The primary difference is the DC current gain (hFE). The BC548B has a minimum gain of 200, while the BC548C has a higher minimum gain of 420 under similar test conditions.

Is the BC548BBU lead-free?

Yes, the BC548BBU is specified as lead-free and compliant with RoHS directives.

What is the complementary PNP transistor for the BC548B?

The complementary PNP transistor in the same series is the BC557B.