This document provides specifications for BC549 and BC550 NPN general purpose transistors. It includes:
- Key features of low current (max 100 mA) and low voltage (max 45 V) operation.
- Applications in low noise audio equipment stages.
- Limiting values for electrical ratings and thermal/operating characteristics.
- Electrical characteristics including current/voltage gains and capacitances.
- Package outline dimensions for the TO-92 plastic package.