BC212LB_D74Z

Single Bipolar Transistors Overview

The BC212LB_D74Z is a PNP silicon small-signal transistor manufactured by onsemi. It is housed in a TO-92 surface-mount package, specifically the SOT-223 variant designated as D74Z. The device features a maximum collector-emitter voltage of 50V and a continuous collector current rating of 100mA. It is designed for general-purpose amplification and switching applications within low-power electronic circuits.

Single Bipolar Transistors Feature Summary

• Utilizes a plastic encapsulated TO-92 (SOT-223) surface-mount form factor for compact board integration.
• Constructed from silicon material suitable for standard small-signal processing tasks.
• Engineered for high reliability with a maximum operating junction temperature of 150°C.

Single Bipolar Transistors Applications

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

Single Bipolar Transistors Procurement Notes

Verify the specific suffix D74Z to confirm the SOT-223 surface-mount package type, as standard BC212 devices often utilize through-hole TO-92 packages. Ensure the manufacturer is identified as onsemi or its predecessor entities like Fairchild Semiconductor, as this component was historically produced under those brands. Cross-reference the datasheet for exact thermal resistance values required for your specific PCB layout constraints.

Single Bipolar Transistors Selection Notes

Select this component when a surface-mount PNP transistor is required for low-voltage, low-current applications. The 50V breakdown voltage and 100mA current capacity define its operational limits. Consider the thermal performance of the SOT-223 package compared to traditional through-hole versions if heat dissipation is a critical design factor in the enclosure.

Single Bipolar Transistors Part Context

This part belongs to the BC212 family of PNP transistors, widely used in consumer electronics and industrial control systems. The 'D74Z' suffix specifically denotes the surface-mount packaging style, distinguishing it from the legacy through-hole variants. The component serves as a fundamental building block for analog signal conditioning and digital logic interfacing in modern embedded designs.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include the BC212L and BC212B from various manufacturers. Verify that replacement parts match the SOT-223 footprint and electrical ratings. Generic equivalents such as the 2SA1015 may require pinout verification before implementation.