BUL741 STMicroelectronics

BUL741 BUL741FP High voltage fast-switching NPN power transistors Features High voltage capability Low spread of dynamic parameters Minimum lot-to-lot spread for reliable operation Very high switching speed 3 3 2 2 1 1 Applications TO-220 TO-220FP Electronic ballast for fluorescent lighting Switch mode power supplies. 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. Thanks to an increased intermediate layer, it has an intrinsic ruggedness which enables the transistor to withstand an high collector current level during breakdown condition, without using the transil protection usually necessary in typical converters for lamp ballast. Table 1. Device summary Order codes Marking Packages Packaging BUL741 BUL741 TO-220 Tube BUL741FP BUL741FP TO-220FP Tube August 2009 Doc ID 13406 Rev 3 1/12 www.st.com 12Contents BUL741, BUL741FP Contents 1 Electrical ratings 3 2 Electrical characteristics . 4 2.1 Typical characteristic . 4 2.2 Test circuits . 7 3 Package mechanical data . 8 4 Revision history . 11 2/12 Doc ID 13406 Rev 3