PN2221A - NPN SILICON TRANSISTOR
The CENTRAL SEMICONDUCTOR PN2221, PN2222 series devices are silicon NPN epitaxial planar transistors designed for small signal, general purpose switching applications.
MARKING: FULL PART NUMBER TO-92 CASE MAXIMUM RATINGS: (TA=25°C) Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Vol