q q q q q For AF input stages and driver applications High current gain Low collector-emitter saturation voltage Low noise between 30Hz and 15 kHz Complementary types: BC 856 W, BC 857 W, BC 858 W,BC 859 W, BC 860 W (PNP) Type BC 846 AW BC 846 BW BC 847 AW BC 847 BW BC 847 CW BC 848 AW BC 848 BW B.