View 2n2218-2n2219-2n2221-2n2222 datasheet:

2N2218-2N2219 2N2221-2N2222 HIGH-SPEED SWITCHES DESCRIPTION The 2N2218, 2N2219, 2N2221 and 2N2222 are sili- con planar epitaxial NPN transistors in Jedec TO-39 (for 2N2218 and 2N2219) and in Jedec TO-18 (for 2N2221 and 2N2222) metal cases. They are designed for high-speed switching applications at collector currents up to 500 mA, and feature use- ful current gain over a wide range of collector cur- rent, low leakage currents and low saturation volt- ages. 2N2218/2N2219 approved to CECC 50002- TO-39 TO-18 100, 2N2221/2N2222 approved to CECC 50002-101 available on request. INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCBO Collector-base Voltage (IE =0) 60 V VCEO Collector-emitter Voltage (IB = 0) 30 V VEBO Emitter-base Voltage (IC =0)