BC548ABU

Single Bipolar Transistors Overview

The BC548ABU is an NPN silicon epitaxial planar transistor from the onsemi BC548 series, housed in a TO-92 (TO-226AA) through-hole package. It features a collector-emitter voltage of 30V and a continuous collector current of 100mA. The device offers a DC current gain (hFE) range of 110 to 200 at VCE=5V and IC=2mA. Key electrical limits include a collector-base voltage of 30V, emitter-base voltage of 5V, power dissipation of 500mW, and a transition frequency of 300MHz. The maximum operating junction temperature is +150°C.

Single Bipolar Transistors Feature Summary

• NPN epitaxial silicon planar construction for reliable small-signal amplification
• High-voltage capability with 30V collector-emitter breakdown rating
• Defined DC current gain binning for consistent amplification performance
• Lead-free finish compliant with RoHS environmental directives

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Switching applications requiring low current control
• Audio pre-amplifier stages
• Logic interface buffering

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'BU' against the official onsemi datasheet to confirm packaging details and marking codes. Ensure the ordered component matches the required hFE bin (A grade) for the intended circuit gain specifications. Confirm RoHS compliance status directly from the manufacturer's documentation prior to procurement.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN general-purpose transistor with moderate voltage ratings is required. The BC548A variant provides a specific gain range suitable for applications needing predictable amplification factors without complex biasing adjustments. Consider thermal derating if ambient temperatures exceed standard operating ranges.

Single Bipolar Transistors Part Context

This part belongs to the widely used BC546/BC547/BC548 family of NPN transistors. These devices are industry-standard replacements for older 2N-series equivalents like the 2N3904 or 2N2222 in low-power applications. The BC548 specifically denotes the 30V rating within the series, distinguishing it from higher voltage variants like the BC546.

Single Bipolar Transistors Replacement Considerations

• BC548B
• BC548C
• 2N3904

Single Bipolar Transistors FAQ

What is the DC current gain range for the BC548A?

The BC548A has a minimum DC current gain (hFE) of 110 and a maximum of 200 at VCE=5V and IC=2mA.

Is the BC548ABU lead-free?

Yes, onsemi BC548 series transistors are Pb-free products compliant with RoHS directives.

What is the maximum power dissipation?

The maximum power dissipation is 500 mW at an ambient temperature of 25°C.