Ex workshop spare parts drawers
MOTOROLA - Transistor
Type: BC640
High Current Audio amplifier
Si NPN
Full part # on package BC640 (M Motorola logo) 520 (Batch code)
TO-92 case

NEW Old Stock
Even though this new, it is old stock and being just one, I have made basic tests
Confirming that it tests fine and the hFE measures 109
Clean legs with only slight signs of oxidisation, still perfectly solderable
To maintain this condition I have now placed the device into a sealed clear plastic packet
NEW
Old Stock