BUL743 High voltage fast-switching NPN power transistor Features ■ Low spread of dynamic parameters ■ High voltage capability ■ Minimum lot-to-lot spread for reliable operation ■ Very high switching speed 3 Applications 1 ■ Electronic ballast for fluorescent lighting up to 256 W (8 x 32 W) ■ Switch mode power supplies TO-220 Figure 1. Description 2 Internal schematic diagram The device is manufactured using the diffused collector in planar technology adopting new and enhanced high voltage structure. 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 code Marking Package Packaging BUL743 BUL743 TO-220 Tube May 2009 Doc ID 15263 Rev 3 1/10 www.st.com 10 Electrical ratings 1 Electrical ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit VCES Collector-emitter voltage (VBE = 0) 1200 V VCEO Collector-emitter voltage (IB = 0) 500 V VEBO Emitter-base voltage (IC = 0, IB = 6 A, tp < 10 ms) V(BR)EBO V Collector current 12 A Collector peak current (tP < 5 ms) 24 A Base current 6 A IBM Base peak current (tP < 5 ms) 12 A Ptot Total dissipation at Tc = 25 °C 100 W Tstg Storage temperature -65 to 150 °C 150 °C Value Unit Rthj-case Thermal resistance junction - case 1.25 °C/W Rthj-amb 62.5 °C/W IC ICM IB TJ Table 3. Symbol 2/10 BUL743 Max. operating junction temperature Thermal data Parameter Thermal resistance junction - ambient Doc ID 15263 Rev 3 BUL743 2 Electrical characteristics Electrical characteristics (Tcase = 25 °C unless otherwise specified) Table 4. Symbol Electrical characteristics Parameter Test conditions Min. Typ. Max. Unit ICES Collector cut-off current (VBE = 0) VCE = 1200 V 0.2 10 µA ICEO Collector cut-off current (IB = 0) VCE = 500 V 10 250 µA V(BR)EBO Emitter base breakdown voltage (IC = 0) IE = 1 mA 15 19 24 V IC = 50 mA 500 Collector-emitter VCEO(sus) (1) sustaining voltage (IB = 0) V VCE(sat) (1) Collector-emitter saturation voltage IC = 3 A _ IC = 10 A _ _ IB = 0.6 A IB = 2.5 A 0.15 0.6 0.5 1.5 V V VBE(sat) (1) Base-emitter saturation voltage IC = 10 A IB = 2.5 A 1.1 1.5 V DC current gain IC = 0.5 A IC = 2 A _ VCE = 5 V _ _ VCE = 3 V 55 34 80 45 Resistive load Storage time Fall time IC = 6 A VCC = 125 V IB(on) = -IB(off) = 1.2 A tp = 300 µs VBE(off) = -5 V 2.5 400 3.8 500 Repetitive avalanche energy L = 2 mH VBE(off) = -5 V hFE (1) ts tf Ear C = 1.8 nF 35 24 3 µs ns mJ 1. Pulsed duration = 300 µs, duty cycle ≤ 1.5% Doc ID 15263 Rev 3 3/10 Electrical characteristics BUL743 2.1 Electrical characteristics (curves) Figure 2. Safe operating area Figure 3. Derating curve Figure 4. DC current gain (VCE = 3 V) Figure 5. DC current gain (VCE = 5 V) Figure 6. Collector-emitter saturation voltage Figure 7. Base-emitter saturation voltage 4/10 Doc ID 15263 Rev 3 BUL743 Figure 8. Electrical characteristics Output characteristics Figure 9. Figure 10. Resistive load switching time (on) Reverse biased safe operating area Figure 11. Resistive load switching time (off) Doc ID 15263 Rev 3 5/10 Electrical characteristics 2.2 BUL743 Test circuits Figure 12. Energy rating test circuit Figure 13. Resistive load switching test circuit 1. Fast electronic switch 2. Non-inductive resistor 6/10 Doc ID 15263 Rev 3 BUL743 3 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Doc ID 15263 Rev 3 7/10 Package mechanical data BUL743 TO-220 mechanical data mm inch Dim Min A b b1 c D D1 E e e1 F H1 J1 L L1 L20 L30 ∅P Q 8/10 Typ 4.40 0.61 1.14 0.48 15.25 Max Min 4.60 0.88 1.70 0.70 15.75 0.173 0.024 0.044 0.019 0.6 10.40 2.70 5.15 1.32 6.60 2.72 14 3.93 0.393 0.094 0.194 0.048 0.244 0.094 0.511 0.137 1.27 10 2.40 4.95 1.23 6.20 2.40 13 3.50 Doc ID 15263 Rev 3 Max 0.181 0.034 0.066 0.027 0.62 0.050 16.40 28.90 3.75 2.65 Typ 0.409 0.106 0.202 0.051 0.256 0.107 0.551 0.154 0.645 1.137 3.85 2.95 0.147 0.104 0.151 0.116 BUL743 4 Revision history Revision history Table 5. Document revision history Date Revision Changes 09-Dec-2008 1 First release 20-Mar-2009 2 Added Section 2.1Section 2.1: Electrical characteristics (curves) on page 4 25-May-2009 3 Document status promoted from preliminary data to datasheet Doc ID 15263 Rev 3 9/10 BUL743 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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