BC557,116

Single Bipolar Transistors Overview

The BC557,116 is a PNP general-purpose small-signal transistor manufactured by NXP Semiconductors. It operates with a maximum collector current of 100 mA and a collector-emitter voltage of -45 V. The device utilizes a TO-92 (SOT54) plastic package for through-hole mounting. DC current gain ranges from 125 to 800 depending on the specific sub-type. Thermal resistance from junction to ambient is 250 K/W, and the maximum power dissipation is 500 mW at 25 °C.

Single Bipolar Transistors Feature Summary

• PNP silicon epitaxial planar transistor designed for low-current switching and amplification applications.
• Utilizes a standard TO-92 plastic single-ended leaded package for reliable through-hole integration.
• Offers high DC current gain suitable for general-purpose signal processing tasks.

Single Bipolar Transistors Applications

• General purpose switching circuits
• Audio frequency amplification stages
• Low-level signal processing

Single Bipolar Transistors Procurement Notes

Verify the exact suffix against the manufacturer's latest documentation to confirm availability status and RoHS compliance. Ensure the ordering code matches the required gain binning specifications for your design. Confirm that the SC-43A package dimensions align with your PCB footprint requirements before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with moderate voltage handling and high gain is required. Compare the hFE range against circuit requirements to ensure proper biasing. Consider the BC547 as the complementary NPN option if a matched pair is needed for differential or push-pull configurations.

Single Bipolar Transistors Part Context

This part belongs to the BC556/BC557 family of PNP general-purpose transistors produced by NXP Semiconductors. The series includes variants differentiated primarily by their DC current gain ranges. These devices are widely used in consumer electronics and industrial control systems requiring reliable small-signal performance.

Single Bipolar Transistors Replacement Considerations

The BC556 serves as a higher-voltage alternative within the same family. Verify pinout compatibility and thermal characteristics when substituting with other manufacturers' equivalents such as those from Fairchild or ON Semiconductor.

Single Bipolar Transistors FAQ

What is the maximum collector-emitter voltage for the BC557?

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

Which package type does the BC557,116 use?

It uses the SC-43A plastic single-ended leaded package, also known as SOT54 or TO-92.

What is the typical DC current gain range?

The DC current gain (hFE) typically ranges from 125 to 800, depending on the specific sub-type classification.