BUX48 BUX48A High voltage fast-switching NPN power transistors Features ■ NPN transistors ■ High voltage capability ■ High current capability ■ Fast switching speed 1 Applications 2 ■ Switching mode power supplies ■ Flyback and forward single transistor low power converters TO-3 Figure 1. Description Internal schematic diagram The BUX48 and BUX48A are multi epitaxial mesa NPN transistors mounted in TO-3 metal can. They are intended for switching and industrial applications for single and three-phase mains. Table 1. Device summary Order code Marking Package BUX48 BUX48 TO-3 BUX48A BUX48A TO-3 Packaging tray November 2007 Rev 1 1/9 www.st.com 9 Absolute maximum ratings 1 BUX48 BUX48A Absolute maximum ratings Table 2. Absolute maximum ratings Value Symbol BUX48 BUX48A Unit VCER Collector-emitter voltage (RBE = 10Ω) 850 1000 V VCES Collector-emitter voltage (VBE = 0) 850 1000 V VCEO Collector-emitter voltage (IB = 0) 400 450 V VEBO Emitter-base voltage (IC = 0) 7 V Collector current 15 A ICM Collector peak current 30 A ICP Collector peak current non repetitive (tp < 20 µs) 55 A IB Base current 4 A Base peak current non repetitive (tp < 20 µs) 20 A PTOT Total dissipation at Tc = 25 °C 175 W Tstg Storage temperature -65 to 200 °C 200 °C IC IBM TJ Table 3. Symbol Rthj-case 2/9 Unit Parameter Max. operating junction temperature Thermal data Parameter Thermal resistance junction-case __max Value Unit 1 °C/W BUX48 BUX48A 2 Electrical characteristics Electrical characteristics (Tcase = 25°C; unless otherwise specified) Table 4. Electrical characteristics Symbol Parameter Collector cut-off current ICES (V BE = 0) ICER Collector cut-off current (R BE = 10Ω) IEBO Emitter cut-off current (IC = 0) Collector-emitter VCEO(sus)(1) sustaining voltage (IB = 0) Emitter-base voltage (IC = 0) VEBO VCE(sat) (1) VBE(sat)(1) Collector-emitter saturation voltage Base-emitter saturation voltage Test conditions Min. Typ. Max. Unit VCE = rated VCES VCE = rated VCES, T c = 125°C 200 µA 2 mA VCE = rated VCER 500 4 µA mA 1 mA VCE = rated VCER, Tc = 125°C VEB = 5 V IC = 200 mA for BUX48 for BUX48A 400 450 IE = 50 mA 7 V V 30 V for BUX48 IC = 10 A IB = 2 A 1.5 V IC = 15 A IB = 4 A 3.5 V IC = 15 A IB = 3 A 5 V for BUX48A IC = 8 A IB = 1.6 A 1.5 V IC = 12 A IB = 2.4 A 5 V for BUX48 IC = 10 A IB = 2 A 1.6 V for BUX48A IC = 8 A IB = 1.6 A 1.6 V 3/9 Electrical characteristics Table 4. Electrical characteristics Symbol ton ts tf BUX48 BUX48A Parameter Resistive load Turn-on time Storage time Fall time Test conditions for BUX48 VCC = 150 V Min. Typ. Max. Unit 1 µs 3 µs 0.8 µs IC = 10 A IB1 = -IB2 = 2 A for BUX48A VCC = 150 V IC = 8 A IB1 = -IB2 = 1.6 A ts tf ts tf ts tf ts tf Inductive load Storage time Fall time Inductive load Storage time Fall time Inductive load Storage time Fall time Inductive load Storage time Fall time for BUX48 VCC = 300 V IC = 10 A VBE = -5 V IB1 = 2 A LB = 3 µH for BUX48 VCC = 300 V IC = 10 A VBE = -5 V IB1 = 2 A LB = 3 µH TC = 125 oC for BUX48A VCC = 300 V IC = 8 A VBE = -5 V IB1 = 1.6 A LB = 3 µH for BUX48A VCC = 300 V IC = 8 A VBE = -5 V IB1 = 1.6 A LB = 3 µH T C = 125 oC 1. Pulsed duration = 300 ms, duty cycle ≤2%. 2.1 Test circuits Figure 2. Resistive load switching test circuit 1) Fast electronic switch 2) Non-inductive resistor 4/9 2.7 µs 0.16 µs 5 µs 0.4 µs 3 µs 0.13 µs 5 µs 0.4 µs BUX48 BUX48A Figure 3. Electrical characteristics Inductive load switching test circuit 1) Fast electronic switch 2) Non-inductive resistor 3) Fast recovery rectifier 5/9 Package mechanical data 3 BUX48 BUX48A Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 6/9 BUX48 BUX48A Package mechanical data TO-3 mechanical data mm. DIM. min. typ max. A 11.00 13.10 B 0.97 1.15 C 1.50 1.65 D 8.32 8.92 E 19.00 20.00 G 10.70 11.10 N 16.50 17.20 P 25.00 26.00 R 4.00 4.09 U 38.50 39.30 V 30.00 30.30 7/9 Revision history BUX48 BUX48A 4 Revision history Table 5. 8/9 Document revision history Date Revision 13-Nov-2007 1 Changes Initial Release BUX48 BUX48A Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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