BU508AW_0708

BU508AW High voltage NPN power transistor for standard definition CRT display 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 TO-247 1 2 3 Applications ■ ■ Horizontal deflection output for CRT TV Switch mode power supplies for CRT TV Figure 1. Internal schematic diagram 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. Table 1. Device summary Marking BU508AW Package TO-247 Packaging Tube Order code BU508AW August 2007 Rev 2 1/11 www.st.com 11 Content BU508AW Content 1 2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 2.2 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2/11 BU508AW Electrical ratings 1 Electrical ratings Table 2. Symbol VCES VCEO VEBO IC ICM IB PTOT Tstg TJ Absolute maximum rating Parameter Collector-emitter voltage (VBE = 0) Collector-emitter voltage (IB = 0) Collector-base voltage (IC = 0) Collector current Collector peak current (tP < 5ms) Base current Total dissipation at Tc = 25°C Storage temperature Max. operating junction temperature Value 1500 700 9 8 15 4 125 -65 to 150 °C 150 Unit V V V A A A W Table 3. Symbol Thermal data Parameter Value 1 Unit °C/W Rthj-case Thermal resistance junction-case _______________max 3/11 Electrical characteristics BU508AW 2 Electrical characteristics (Tcase = 25°C unless otherwise specified) Table 4. Symbol ICES IEBO Electrical characteristics Parameter Collector cut-off current (VBE =0) Emitter cut-off current (IC =0) Test conditions VCE = 1500V VCE = 1500V; VEB = 9V TC= 125°C Min. Typ. Max. 0.2 2 1 Unit mA mA mA Collector-emitter VCEO(sus) (1) sustaining voltage (IC =0) VCE(sat) (1) VBE(sat) (1) hFE (1) Collector-emitter saturation voltage Base-emitter saturation voltage DC current gain Inductive load Storage time Fall time IC = 100mA 700 V IC = 4.5A IC = 4.5A IC = 0.1A IC = 4.5A IC = 4.5A IB = 1.6A IB = 2A VCE = 5V VCE = 5V IB(on) = 0.5A 2.5 0.2 10 5 1 1.1 30 V V ts tf VBE(off) = -2.7V fh = 16KHz LBB(off) = 4.5µH µs µs 1. Pulsed: Pulse duration = 300 ms, duty cycle 1.5 % 4/11 BU508AW Electrical characteristics 2.1 Electrical characteristics (curves) Figure 2. Safe operating area Figure 3. Derating curve Figure 4. DC current gain Figure 5. DC current gain Figure 6. Collector-emitter saturation voltage Figure 7. Base-emitter saturation voltage 5/11 Electrical characteristics Figure 8. Output characteristics BU508AW 6/11 BU508AW Electrical characteristics 2.2 Test circuits Figure 9. Power losses and inductive load switching Figure 10. Reverse biased safe operating area 7/11 Package mechanical data BU508AW 3 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 8/11 BU508AW Package mechanical data TO-247 MECHANICAL DATA mm. MIN. 4.85 2.20 1.0 2.0 3.0 0.40 19.85 15.45 5.45 14.20 3.70 18.50 3.55 4.50 5.50 3.65 5.50 0.140 0.177 0.216 14.80 4.30 0.560 0.14 0.728 0.143 0.216 TYP MAX. 5.15 2.60 1.40 2.40 3.40 0.80 20.15 15.75 MIN. 0.19 0.086 0.039 0.079 0.118 0.015 0.781 0.608 0.214 0.582 0.17 inch TYP. MAX. 0.20 0.102 0.055 0.094 0.134 0.03 0.793 0.620 DIM. A A1 b b1 b2 c D E e L L1 L2 øP øR S 9/11 Revision history BU508AW 4 Revision history Table 5. Date 02-Mar-2007 14-Aug-2007 Document revision history Revision 1 2 Initial release. Complete document, added all curves (2.1: Electrical characteristics (curves) Changes 10/11 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. 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