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BUL39D High voltage fast-switching NPN power transistor Features Integrated antiparallel collector-emitter diode High voltage capability Low spread of dynamic parameters Minimum lot-to-lot spread for reliable operation Very high switching speed 3 2 1 Application TO-220 Electronic transformer for halogen lamp Description The device is manufactured using high voltage Figure 1. Internal schematic diagram multi-epitaxial planar technology for high switching speeds while maintaining the wide RBSOA. The device is designed for use in electronic transformer for halogen lamp. Table 1. Device summary Order code Marking Package Packaging BUL39D BUL39D TO-220 Tube October 2008 Rev 5 1/11 www.st.com 11 Contents BUL39D Contents 1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Electrical characteristics (curves) ... 5 3 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2/11 BUL39D Electrical ratings 1 Electrical ratings Table 2. Absolute maximum rating Symbol Parameter Value Unit VCES Collector-emitter voltage (VBE = 0) 850 V VCEO Collector-emitter voltage (IB = 0) 450 V VEBO Emitter-base voltage (IC= 0) 9 V IC Collector current 4 A ICM Collector peak current (tP < 5 ms) 8 A IB Base current