BU508AW High voltage NPN Power transistor for standard Definition CRT display Preliminary Data Features ■ State-of-the-art technology: – Diffused collector “Enhanced generation” ■ Stable performances versus operating temperature variation ■ Low base-drive requirement ■ Tight hFE range at operating collector current ■ High ruggedness ■ TO-247 semi-insulated power package ■ In compliance with the 2002/93/EC European directive 3 2 1 Applications TO-247 Internal schematic diagram ■ Horizontal deflection output for CRT TV ■ Switch mode power supplies for CRT TV Description The BU508AW is manufactured using Diffused Collector in Planar Technology adopting new and enhanced high voltage structure for updated performance to the Horizontal Deflection stage. Order codes Part Number Marking Package Packaging BU508AW BU508AW TO-247 Tube March 2007 Rev 1 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1/8 www.st.com 8 Electrical ratings 1 BU508AW Electrical ratings Table 1. Absolute maximum rating Symbol Parameter Value Unit VCES Collector-emitter voltage (VBE = 0) 1500 V VCEO Collector-emitter voltage (IB = 0) 700 V VEBO Collector-base voltage (IC = 0) 9 V Collector current 8 A Collector peak current (tP < 5ms) 15 A Base current 4 A 125 W IC ICM IB PTOT Total dissipation at Tc = 25°C Tstg Storage temperature TJ Table 2. Symbol -65 to 150 °C Max. operating junction temperature Thermal data Parameter Rthj-case Thermal resistance junction-case _______________max 2/8 150 Value Unit 1 °C/W BU508AW 2 Electrical characteristics Electrical characteristics (Tcase = 25°C unless otherwise specified) Table 3. Symbol Electrical characteristics Parameter ICES Collector cut-off current (VBE =0) IEBO Emitter cut-off current (IC =0) Collector-emitter VCEO(sus) (1) sustaining voltage (IC =0) Test conditions VCE = 1500V; TC= 125°C VEB = 9V IC = 100mA IC = 4.5A IB = 1.6A VBE(sat) (1) Base-emitter saturation voltage IC = 4.5A IB = 2A IC = 0.1A VCE = 5V IC = 4.5A VCE = 5V IC = 4.5A IB(on) = 0.5A ts tf Inductive load Storage time Fall time Max. Unit 0.2 2 mA mA 1 mA 700 Collector-emitter saturation voltage DC current gain Typ. VCE = 1500V VCE(sat) (1) hFE (1) Min. VBE(off) = -2.7V fh = 16KHz LBB(off) = 4.5µH V 10 5 1 V 1.1 V 30 2.5 0.2 µs µs 1. Pulsed: Pulse duration = 300 ms, duty cycle 1.5 % 3/8 Electrical characteristics 2.1 4/8 Test circuits Figure 1. Power losses and inductive load switching Figure 2. Reverse biased safe operating area BU508AW BU508AW 3 Package mechanical data 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 5/8 Package mechanical data BU508AW TO-247 MECHANICAL DATA DIM. mm. MIN. inch MAX. MIN. TYP. MAX. A 4.85 5.15 0.19 0.20 A1 2.20 2.60 0.086 0.102 b 1.0 1.40 0.039 0.055 b1 2.0 2.40 0.079 0.094 0.134 b2 3.0 3.40 0.118 c 0.40 0.80 0.015 0.03 D 19.85 20.15 0.781 0.793 E 15.45 15.75 0.608 e 5.45 0.620 0.214 L 14.20 14.80 0.560 L1 3.70 4.30 0.14 L2 18.50 0.582 0.17 0.728 øP 3.55 3.65 0.140 0.143 øR 4.50 5.50 0.177 0.216 S 6/8 TYP 5.50 0.216 BU508AW 4 Revision history Revision history Table 4. Revision history Date Revision 02-Mar-2007 1 Changes Initial release. 7/8 BU508AW 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. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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