BUL49D STMicroelectronics

BUL49D BULB49D High voltage fast-switching NPN power transistors Features High voltage capability Low spread of dynamic parameters 3 Minimum lot-to-lot spread for reliable operation 3 2 2 1 1 Very high switching speed TO-220FP TO-220 High ruggedness Applications 3 1 3 Electronic transformers for halogen lamps 2 1 2 2 I PAK Flyback and forward single transistor low D PAK power converters Description Figure 1. Internal schematic diagram The devices are manufactured using high voltage multi-epitaxial planar technology for high switching speeds and high voltage capability. The devices are designed for use in electronic transformer for halogen lamps. Table 1. Device summary Order code Marking Package Packaging BUL49D BUL49D TO-220 Tube BUL49DFP BUL49DFP TO-220FP Tube 2 BULB49D-1 BULB49D Tube I PAK 2 BULB49DT4 BULB49D Tape and reel D PAK June 2008 Rev 3 1/15 www.st.com 15Contents BUL49D - BULB49D Contents 1 Electrical ratings 3 2 Electrical characteristics . 4 2.1 Electrical characteristics (curves) 5 2.2 Test circuits 7 3 Package mechanical data . 8 4 Packaging information 13 5 Revision history . 14 2/15