High voltage ignition coil driver power Darlington transistors Ve

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High voltage ignition coil driver power Darlington transistors Ve

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BU941 BU941P
High voltage ignition coil driver power Darlington transistors
Very rugged Bipolar technology High operating junction temperature Integrated antiparallel collector-emitter diode
Applications
High ruggedness electronic ignitions
Description
devices bipolar Darlington transistors manufactured using Multi-Epitaxial Planar technology. They have been properly designed used automotive environment electronic ignition power actuators.
TO-3
TO-247
Figure
Internal schematic diagrams
TO-3
TO-247
Table
Device summary
Marking BU941 BU941P Package TO-3 TO-247 Packaging Tray Tube
Order codes BU941 BU941P
November 2008
1/12
www.st.com
Content
BU941, BU941P
Content
Electrical ratings Electrical characteristics
Electrical characteristics (curves)
Test circuits Package mechanical data Revision history
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BU941, BU941P
Electrical ratings
Electrical ratings
Table
Symbol VCES VCEO VEBO PTOT Tstg
Absolute maximum ratings
Value Parameter BU941 Collector-emitter voltage (VBE Collector-emitter voltage Emitter-base voltage Collector current Collector peak current Base current Base peak current Total dissipation Storage temperature Max. operating junction temperature BU941P Unit
Table
Symbol
Thermal data
Parameter Value 0.97 Unit °C/W
Rthj-case Thermal resistance junction-case max.
3/12
Electrical characteristics
BU941, BU941P
Electrical characteristics
(Tcase unless otherwise specified)
Table
Symbol ICES ICEO IEBO
Electrical characteristics
Parameter Collector cut-off current (VBE Collector cut-off current Emitter cut-off current Test conditions Min. Typ. Max. Unit
VCEO(sus)(1)
Collector-emitter Vclamp sustaining voltage Figure Collector-emitter saturation voltage Vclamp Figure
VCE(sat)
VBE(sat) hFE(1)
Base-emitter saturation voltage current gain Diode forward voltage Functional test
Inductive Load Storage time Fall time
Vclamp Figure
Pulsed duration duty cycle 1.5%
4/12
BU941, BU941P
Electrical characteristics
Figure
Electrical characteristics (curves)
Safe operating area Figure current gain
Figure
current gain
Figure
Collector-emitter saturation voltage
Figure
Collector-emitter saturation voltage Figure
Base-emitter saturation voltage
5/12
Electrical characteristics Figure Switching time inductive load
BU941, BU941P
6/12
BU941, BU941P
Test circuits
Figure
Test circuits
Functional test circuit Figure Functional test wafeforms
Figure Switching time test circuit
Figure Sustaining voltage test circuit
7/12
Package mechanical data
BU941, BU941P
Package mechanical data
order meet environmental requirements, offers these devices ECOPACK® packages. These packages have lead-free second level interconnect category second level interconnect marked package inner label, compliance with JEDEC Standard JESD97. maximum ratings related soldering conditions also marked inner label. ECOPACK trademark. ECOPACK specifications available www.st.com
8/12
BU941, BU941P
Package mechanical data
TO-3 mechanical data
DIM. min. 11.00 0.97 1.50 8.32 19.00 10.70 16.50 25.00 4.00 38.50 30.00 max. 13.10 1.15 1.65 8.92 20.00 11.10 17.20 26.00 4.09 39.30 30.30
0015923C
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Package mechanical data
BU941, BU941P
TO-247 Mechanical data
Min. 4.85 2.20 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 Max. 5.15 2.60 1.40 2.40 3.40 0.80 20.15 15.75
Dim.
10/12
BU941, BU941P
Revision history
Revision history
Table
Date 21-Jun-2004 18-Nov-2008
Document revision history
Revision Package changed from TO-218 TO-247 BU941P. Changes
11/12
BU941, BU941P
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High voltage ignition coil driver power Darlington transistors Ve

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