BC327

Single Bipolar Transistors Overview

The Fairchild Semiconductor BC327 is a PNP general-purpose bipolar junction transistor (BJT) housed in a TO-92 through-hole package. It features a maximum collector current of 0.8 A and a collector-emitter breakdown voltage of 45 V. The device has a maximum power dissipation of 625 mW and a transition frequency of 100 MHz. DC current gain ranges from 40 to 160 depending on the specific sub-grade, with saturation voltages specified at defined base and collector currents.

Single Bipolar Transistors Feature Summary

• PNP silicon planar epitaxial construction for reliable switching performance
• Designed for general-purpose applications including amplifier and switching circuits
• Lead-free finish compliant with RoHS standards

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Amplifier stages
• Driver circuits for loads requiring PNP control

Single Bipolar Transistors Procurement Notes

Verify the exact ordering suffix when sourcing, as variants like BC327B or BC327D indicate different hFE bins. Confirm lead-free status if required by assembly specifications. Ensure the TO-92 package matches the PCB footprint. Cross-reference datasheets from ON Semiconductor, which acquired Fairchild's discrete semiconductor business, for updated electrical characteristics and pinout confirmation.

Single Bipolar Transistors Selection Notes

Select based on required current gain bin; higher suffix letters typically denote higher hFE ranges. Verify thermal management requirements given the 625 mW power limit in the TO-92 package. Ensure the 45V rating exceeds the circuit's maximum operating voltage. Consider the 100MHz transition frequency for high-speed switching needs.

Single Bipolar Transistors Part Context

The BC327 belongs to the widely used BCY series of small-signal transistors. It is the PNP complement to the NPN BC326. Manufactured originally by Fairchild Semiconductor, production rights and part numbers were transferred to ON Semiconductor following corporate integration. The component remains a standard choice for low-power analog and digital logic interfaces.

Single Bipolar Transistors Replacement Considerations

• BC327B
• BC327D
• BC327TF

Single Bipolar Transistors FAQ

What is the difference between BC327 and BC327B?

The suffix indicates the DC current gain (hFE) bin. BC327B specifies a minimum hFE of 100 at 100mA, whereas the standard BC327 may have a lower minimum gain depending on the specific datasheet version.

Is the BC327 available in a surface-mount package?

The standard BC327 is a through-hole component in a TO-92 package. Surface-mount equivalents exist under different part numbers, such as the SOT-23 packaged versions.