BU941_08

BU941 BU941P High voltage ignition coil driver NPN power Darlington transistors Features ■ ■ ■ Very rugged Bipolar technology High operating junction temperature Integrated antiparallel collector-emitter diode 1 2 2 1 Applications ■ 3 High ruggedness electronic ignitions Description 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. TO-3 TO-247 Figure 1. Internal schematic diagrams for TO-3 for TO-247 Table 1. Device summary Marking BU941 BU941P Package TO-3 TO-247 Packaging Tray Tube Order codes BU941 BU941P November 2008 Rev 3 1/12 www.st.com 12 Content BU941, BU941P Content 1 2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 4 5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2/12 BU941, BU941P Electrical ratings 1 Electrical ratings Table 2. Symbol VCES VCEO VEBO IC ICM IB IBM PTOT Tstg TJ Absolute maximum ratings Value Parameter BU941 Collector-emitter voltage (VBE = 0) Collector-emitter voltage (IB = 0) Emitter-base voltage (IC = 0) Collector current Collector peak current Base current Base peak current Total dissipation at Tc = 25 °C Storage temperature Max. operating junction temperature 180 -65 to 200 200 500 400 5 15 30 1 5 155 -65 to 175 °C 175 BU941P V V V A A A A W Unit Table 3. Symbol Thermal data Parameter Value 0.97 Unit °C/W Rthj-case Thermal resistance junction-case max. 3/12 Electrical characteristics BU941, BU941P 2 Electrical characteristics (Tcase = 25 °C; unless otherwise specified) Table 4. Symbol ICES ICEO IEBO Electrical characteristics Parameter Collector cut-off current (VBE = 0) Collector cut-off current (IB = 0) Emitter cut-off current (IC = 0) Test conditions VCE = 500 V VCE = 500 V VCE = 450 V VCE = 450 V VEB = 5 V L = 10 mH 400 IB = 100 mA IB = 250 mA IB = 300 mA IB = 100 mA IB = 250 mA IB = 300 mA VCE = 10 V 300 2.5 L = 7 mH 10 A V 1.6 1.8 2 2.2 2.5 2.7 V V V V V V V Min. Typ. Max. 100 0.5 100 0.5 20 Unit µA mA µA mA mA TC = 125 °C TC = 125 °C VCEO(sus)(1) IC = 10 mA Collector-emitter Vclamp = 400 V sustaining voltage (IB = 0) see Figure 12 Collector-emitter saturation voltage IC = 8 A IC = 10 A IC = 12 A IC = 8 A IC = 10 A IC = 12 A IC = 5 A IF = 10 A VCC = 24 V Vclamp = 400 V see Figure 9 VCE(sat) (1) VBE(sat) (1) hFE(1) VF Base-emitter saturation voltage DC current gain Diode forward voltage Functional test ts tf Inductive Load Storage time Fall time Vclamp = 300 V IC = 7 A L = 7 mH IB = 70 mA VBE = 0 RBE = 47 Ω VCC = 12 V see Figure 11 15 0.5 µs µs 1. Pulsed duration = 300 µs, duty cycle ≤1.5% 4/12 BU941, BU941P Electrical characteristics 2.1 Figure 2. Electrical characteristics (curves) Safe operating area Figure 3. DC current gain Figure 4. DC current gain Figure 5. Collector-emitter saturation voltage Figure 6. Collector-emitter saturation voltage Figure 7. Base-emitter saturation voltage 5/12 Electrical characteristics Figure 8. Switching time inductive load BU941, BU941P 6/12 BU941, BU941P Test circuits 3 Figure 9. Test circuits Functional test circuit Figure 10. Functional test wafeforms Figure 11. Switching time test circuit Figure 12. Sustaining voltage test circuit 7/12 Package mechanical data BU941, BU941P 4 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 8/12 BU941, BU941P Package mechanical data TO-3 mechanical data mm. DIM. min. A B C D E G N P R U V 11.00 0.97 1.50 8.32 19.00 10.70 16.50 25.00 4.00 38.50 30.00 typ max. 13.10 1.15 1.65 8.92 20.00 11.10 17.20 26.00 4.09 39.30 30.30 0015923C 9/12 Package mechanical data BU941, BU941P 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 14.80 4.30 Typ Max. 5.15 2.60 1.40 2.40 3.40 0.80 20.15 15.75 Dim. A A1 b b1 b2 c D E e L L1 L2 øP øR S 10/12 BU941, BU941P Revision history 5 Revision history Table 5. Date 21-Jun-2004 18-Nov-2008 Document revision history Revision 2 3 Package changed from TO-218 to TO-247 for BU941P. Changes 11/12 BU941, BU941P Please Read Carefully: Information in this document is provided solely in connection with ST products. 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