BUL741
High voltage fast-switching NPN power transistor
General features
High voltage capability Low spread of dynamic parameters Minimum lot-to-lot spread for reliable operation Very high switching speed
3
Description
The device is manufactured using high voltage Multi-Epitaxial Planar technology for high switching speeds and high voltage capability. Thanks to an increased intermediate layer, 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.
1
2
TO-220
Figure 1.
Internal schematic diagram
Applications
Electronic ballast for fluorescent lighting Switch mode power supplies.
Table 1.
Device summary
Marking BUL741 Package TO-220 Packaging Tube
Order code BUL741
July 2007
Rev 2
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Electrical ratings
BUL741
1
Electrical ratings
Table 2. Absolute maximum rating
S y mb o l VCES VCEO VEBO IC ICM IB IBM Ptot Tstg TJ Parameter Collector-emitter voltage (V BE = 0) Collector-emitter voltage (IB = 0) Emitter-base voltage (IC = 0, IB = 2A, tP < 10ms) Collector current Collector peak current (tP < 5ms) Base current Base peak current (tP < 5ms) Total dissipation at T c = 25C Storage temperature Max. operating junction temperature Value 1050 400 V(BR)EBO 2.5 5 1.5 3 60 -65 to 150 150 Unit V V V A A A A W C C
Table 3.
S y mb o l Rthj-case
Thermal data
Parameter Thermal resistance junction-case __max Value 2.08 Uni t C/W
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BUL741
Electrical characteristics
2
Electrical characteristics
(Tcase = 25C unless otherwise specified) Table 4.
S y mb o l ICES ICEO V(BR)EBO
Electrical characteristics
Parameter Collector cut-off current (VBE =0V) Collector cut-off current (IB =0) Emitter-base breakdown voltage (IC = 0) Test conditions VCE =1050V VCE =400V IE =1mA IC =10mA 400 IC =0.7A IC =2A IC =2A IC =0.1A IC =0.45A VCC =125V VBE(off) =-5V L =2mH VBE(off) =-5V C =1.8nF 5 IB =0.14A IB =0.6A IB =0.6A VCE =5V VCE =3V IC =1A 2.5 350 3.5 500 s ns mJ 48 25 450 0.15 0.5 1.1 70 35 0.5 1.5 1.5 100 50 V V V V 15 Min. Typ. 0.2 10 19 Max. 10 250 24 Unit A A V
Collector-emitter VCEO(sus) (1) sustaining voltage (IB = 0) VCE(sat) (1) Collector-emitter saturation voltage Base-emitter saturation voltage DC current gain Resistive load Storage time Fall time Repetitive avalanche energy
VBE(sat) (1) hFE
ts tf Ear
IB1 = -IB2 =0.2A tp = 300s
Note (1) Pulsed duration = 300s, duty cycle 1.5%
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Electrical characteristics
BUL741
2.1
Typical characteristic
Figure 2. Safe operating area Figure 3. Derating curve
Figure 4.
Output characteristics
Figure 5.
Reverse biased safe operating area
Figure 6.
DC current gain
Figure 7.
DC current gain
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BUL741 Figure 8. Base-emitter saturation voltage Figure 9.
Electrical characteristics Collector-emitter saturation voltage
Figure 10. Resistive load switching on times
Figure 11. Resistive load switching on times
Figure 12. Resistive load switching off times
Figure 13. Resistive load switching off times
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Electrical characteristics
BUL741
2.2
Test circuits
Figure 14. Resistive load switching test circuitit
1) Fast electronic switch 2) Non-inductive resistor
Figure 15. Energy rating test circuit
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BUL741
Package mechanical data
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
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Package mechanical data
BUL741
TO-220 Mechanical data
DIM. A b b1 c D D1 E e e1 F H1 J1 L L1 L20 L30 øP Q 3.75 2.65 10 2.40 4.95 1.23 6.20 2.40 13 3.50 16.40 28.90 3.85 2.95 mm. MI N. 4.40 0.61 1.14 0.49 15.25 1. 27 10.40 2.70 5.15 1.32 6.60 2.72 14 3.93 TYP MAX. 4.60 0.88 1.70 0.70 15.75
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Revision history
4
Table 5.
Date
Revision history
Revision history
R evision 1 2 Initial release. Figure 12 and 13 have been updated. Changes
11-Apr-2007 10-Jul-2007
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BUL741
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