BC318C

Single Bipolar Transistors Overview

The BC318C is a general-purpose NPN silicon transistor manufactured by onsemi. It is housed in the TO-92 (TO-220AB equivalent physical form factor context) package, designed for low-power amplification and switching applications. The device features a collector-emitter voltage rating of 100V and a continuous collector current capacity of 3A. It includes a minimum DC current gain (hFE) of 10 to ensure reliable saturation in switching circuits. The component operates within a junction temperature range up to 150°C, providing robust thermal performance for standard electronic designs.

Single Bipolar Transistors Feature Summary

• NPN silicon construction for general-purpose amplification
• High collector current capability of 3A
• Collector-emitter breakdown voltage of 100V
• Suitable for low-power switching and linear applications

Single Bipolar Transistors Applications

• General-purpose amplifier circuits
• Low-power switching applications
• Driver stages for relays or lamps

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer marking and datasheet revision when sourcing. Confirm that the component matches the original Fairchild Semiconductor specifications now managed by onsemi. Ensure the package type corresponds to the required PCB footprint. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Single Bipolar Transistors Selection Notes

Select this component for applications requiring moderate power handling with a single NPN configuration. Consider the 3A current limit and 100V voltage rating against circuit demands. Evaluate thermal management requirements given the 150°C maximum junction temperature. Compare against alternative transistors if higher frequency response or lower noise figures are necessary for the specific design.

Single Bipolar Transistors Part Context

The BC318C belongs to the family of general-purpose NPN bipolar junction transistors originally developed by Fairchild Semiconductor. Following the acquisition, these products are distributed under the onsemi brand portfolio. This series is widely recognized for its reliability in consumer electronics and industrial control systems where standard switching and amplification functions are required.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers: BC318CTU.