BU941ZPFI STMicroelectronics

BU941ZP BU941ZPFI High voltage ignition coil driver NPN power Darlington transistors Features Very rugged bipolar technology Built in clamping Zener High operating junction temperature Fully insulated package (U.L. compliant) for easy mounting 3 2 Applications 1 High ruggedness electronic ignitions TO-247 TO-3PF Description Figure 1. Internal schematic diagram The devices are bipolar Darlington transistors manufactured using Multi-Epitaxial Planar technology. They have been properly designed to be used in Automotive environment as electronic ignition power actuators. Table 1. Device summary Order code Marking Packages Packaging BU941ZP BU941ZP TO-247 Tube BU941ZPFI BU941ZPFI TO-3PF Tube January 2008 Rev 7 1/11 www.st.com 11Absolute maximum ratings BU941ZP BU941ZPFI 1 Absolute maximum ratings Table 2. Absolute maximum ratings Value Symbol Parameter Unit BU941ZP BU941ZPFI V Collector-emitter voltage (I = 0) 350 V CEO B V Emitter-base voltage (I = 0) 5 V EBO C I Collector current 15 A C I Collector peak current (t < 5ms) 30 A CM p I Base current 1 A B I Base peak current (t < 5ms) 5 A BM p P Total dissipation at T 25 C 155 65 W tot c Insulation withstand voltage (RMS) from all three V 2500 V isol leads to external heatsink T Storage temperature -65 to 175 -65 to 175 C stg T Max. operating junction temperature 175 175 C J Table 3. Thermal data Symbol Parameter TO-247 TO-3PF Unit R Thermal resistance junction-case max 0.97 2.3 C/W thj-case 2/11