BC109C TIN/LEAD

Single Bipolar Transistors Overview

The BC109C is an NPN general-purpose silicon transistor manufactured by Central Semiconductor Corp. It operates with a maximum collector current of 100 mA and a collector-emitter voltage rating of 45 V. The device utilizes a metal case package, specifically TO-18 or SOT18, which facilitates efficient thermal dissipation. Its design supports low-voltage applications and general-purpose switching tasks.

Single Bipolar Transistors Feature Summary

• Low current handling capability suitable for small-signal applications
• Low voltage operation optimized for specific circuit constraints
• Metal case construction providing robust mechanical stability

Single Bipolar Transistors Applications

• General purpose switching circuits
• Small signal amplification stages
• Low voltage control systems

Single Bipolar Transistors Procurement Notes

Verify the exact pinout configuration against the specific datasheet revision, as variations exist between TO-18 and SOT18 packages. Confirm lead material specifications match the TIN/LEAD designation to ensure compatibility with assembly processes. Check RoHS compliance status if required by project regulations.

Single Bipolar Transistors Selection Notes

Select this component when a rugged metal-can NPN transistor is required for low-power switching. Ensure the operating voltage remains below 45 V and current stays within 100 mA limits. Consider thermal management requirements associated with the metal case package in dense layouts.

Single Bipolar Transistors Part Context

This part belongs to the BC107/BC108/BC109 family of NPN general-purpose transistors originally specified by Philips Semiconductors. These devices are widely recognized for their reliability in standard electronic designs. The BC109C variant offers specific gain binning characteristics compared to lower suffix versions.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers: BC109B, BC109D.