BC549C

Single Bipolar Transistors Overview

The Diotec Semiconductor BC549C is a general-purpose NPN silicon epitaxial planar transistor housed in a TO-92 package. It features a collector-emitter voltage (VCEO) of 30 V and a continuous collector current (IC) of 100 mA, with a maximum power dissipation (Ptot) of 500 mW. The device offers three distinct DC current gain (hFE) groups: Group A (110–220), Group B (200–450), and Group C (420–800). It operates within a junction temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Three standardized current gain groups for precise amplification control
• Low noise figure suitable for sensitive signal processing applications
• Compliant with RoHS, REACH, and Conflict Minerals regulations

Single Bipolar Transistors Applications

• Signal processing circuits
• General switching applications
• Amplification stages

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix when purchasing. Suffixes such as -Q indicate AEC-Q101 compliance, while -AQ denotes qualification status. Confirm packaging options, which include standard ammo packs or bulk supply upon request, to ensure alignment with assembly requirements.

Single Bipolar Transistors Selection Notes

Select the BC549C based on required hFE group; Group C provides the highest gain range. Ensure the 30 V collector-emitter rating meets circuit voltage limits. For automotive-grade reliability, specify the -Q suffix variant. Verify thermal management needs against the 500 mW dissipation limit at elevated ambient temperatures.

Single Bipolar Transistors Part Context

This component belongs to the BC546...BC549 series of universal NPN transistors from Diotec Semiconductor. It serves as the low-voltage counterpart to higher-rated variants like the BC546 and BC547. The series includes complementary PNP devices (BC556...BC559) for push-pull configurations.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include the BC549B and BC549A from other manufacturers, provided they match the 30 V VCEO rating and TO-92 package. Verify that replacement parts offer equivalent hFE characteristics and thermal resistance values.