Datasheet and Circuit Diagram, Posted by: admindata at July 5th, 2009
Below is the schematic of 2N2222 NPN Switching Transistors test circuit for switching times purpose. This device has 2N2907A as the PNP complement. With high current reach max 800mA and 40V maximum voltage (low voltage), 2N2222 can be used in applications such linear amplification and switching purposes.
The switching times are between 10% and 90% levels. Here is the value: Vi = 9.5 V; T = 500 ms; tp = 10 µs; tr = tf ? 3 ns, R1 = 68 ohm; R2 = 325 ohm; RB = 325 ohm; RC = 160 ohm, VBB = -3.5 V; VCC = 29.5 V, Oscilloscope input impedance Zi = 50 ohm. Complete read about Philips 2N2222 NPN Switching Transistors Circuit for Switching Times can be found here in the 2N2222 Datasheet (source: philips semiconductors).