BC109C NPN High Gain Audio Transistor TO-18 BC109

These are in tons of circuits! They go very well in the muff circuit, too. Likely Philips brand, BC109 in the TO-18 metal can. This version has hfe in the 350-900 range (most I've tested are 550-750).

Bulk discount ranges:

5% off: 21-75 pieces

10% off: 76-250 pieces

15% off: 251 pieces and above