BD6xxx Complementary power Darlington transistors . Features Good h linearity FE High f frequency T Monolithic Darlington configuration with integrated antiparallel collector-emitter diode 1 Applications 2 3 Linear and switching industrial equipment SOT-32 Description The devices are manufactured in planar base Figure 1. Internal schematic diagram island technology with monolithic Darlington configuration. R1 typ.= 15 K R2 typ.= 100 Table 1. Device summary Order codes Marking Package Packaging BD677 BD677 BD677A BD677A BD678 BD678 BD678A BD678A BD679 BD679 SOT-32 Tube BD679A BD679A BD680 BD680 BD680A BD680A BD681 BD681 BD682 BD682 January 2008 Rev 5 1/12 www.st.com 12Contents BD6xxx Contents 1 Absolute maximum ratings . 3 2 Electrical characteristics . 4 2.1 Typical characteristic (curves) 6 2.2 Test circuit . 8 3 Package mechanical data . 9 4 Revision history . 11 2/12