NTE199 Transistor NPN Silicon 70V IC-0.1A Lo Noise Hi-gain Pre-amp
 
The NTE199 is a silicon NPN transistor in a TO92 type package designed especially for low noise preamplifier and small signal industrial amplifier applications. This device features low collector saturation voltage, tight beta control, and excellent low noise characteristics.
 
Full spec sheet:
https://www.nteinc.com/specs/100to199/pdf/nte199.pdf