BC109C PBFREE

Single Bipolar Transistors Overview

The BC109C PBFREE is an NPN general-purpose bipolar junction transistor manufactured by Central Semiconductor Corp. It is housed in a TO-18 metal package and serves as the complement to the BC177 PNP device. The component supports low current applications with a maximum rating of 100 mA and operates at low voltages up to 45 V. Designed for general-purpose switching and amplification, it provides a reliable discrete semiconductor solution for standard electronic circuits requiring robust NPN performance.

Single Bipolar Transistors Feature Summary

• NPN general-purpose transistor configuration
• Low voltage operation capability
• Metal can packaging for durability

Single Bipolar Transistors Applications

• General purpose switching
• Amplification circuits

Single Bipolar Transistors Procurement Notes

Verify the specific datasheet for the BC109C PBFREE variant to confirm electrical parameters against original Philips specifications. Ensure the TO-18 package dimensions match the target PCB layout. Confirm RoHS compliance status directly with the manufacturer or authorized distributor documentation before finalizing procurement plans.

Single Bipolar Transistors Selection Notes

Select this component when a rugged metal-can NPN transistor is required for low-voltage, low-current applications. It is suitable for designs needing a direct complement to the BC177 PNP transistor. Verify that the 100 mA collector current and 45 V breakdown voltage meet the circuit requirements for both switching and linear amplification tasks.

Single Bipolar Transistors Part Context

This part belongs to the BC107/BC108/BC109 family of NPN general-purpose transistors originally specified by Philips Semiconductors. Central Semiconductor produces the lead-free version (PBFREE) of this legacy component. The series is characterized by its low current handling and low voltage ratings, making it distinct from high-power or high-frequency variants within the broader transistor market.

Single Bipolar Transistors Replacement Considerations

The BC177 is the documented PNP complement. Direct replacements may include other NPN transistors in TO-18 packages with similar 100 mA and 45 V ratings, provided pinouts are verified.