This is a general-purpose NPN darlington transistor (4 A max).
T-BD680A | PNP power darlington transistor | |
HEATSINK-03 | Heatsink TO220 14 C/W | |
HEATSINK-04 | Heatsink TO220 11 C/W | |
HEATSINK-05 | Heatsink TO220 15.5C/W | |
HEATSINK-06 | Heatsink TO220 10.9C/W | |
HEATSINK-08 | Heatsink TO220 13.5 K/W |