July 2007 Rev 4 1/9
9
BD439
BD441
NPN power transistors
Features
■NPN transistors
Applications
■Linear and switching industrial equipment
Description
The devices are manufactured in Planar
technology with “Base Island” layout. The
resulting transistor shows exceptional high gain
performance coupled with very low saturation
voltage. The PNP types are BD440 and BD442.
.
Figure 1. Internal schematic diagram
SOT-32
321
www.st.com
Table 1. Device summary
Order code Marking Package Packaging
BD439
BD441
BD439
BD441
SOT-32
SOT-32
Tube
Tube
Absolute maximum ratings BD439 BD441
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1 Absolute maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
BD439 BD441
VCBO Collector-base voltage (IE = 0) 60 80 V
VCES Collector-emitter voltage (VBE = 0) 60 80 V
VCEO Collector-emitter voltage (IB = 0) 60 80 V
VEBO Emitter-base voltage (IC = 0) 5 V
ICCollector current 4 A
ICM Collector peak current (tp < ms) 7 A
IBBase current 1 A
PTOT Total dissipation at Tcase = 25°C 36 W
Tstg Storage temperature -65 to 150 °C
TJMax. operating junction temperature 150 °C
BD439 BD441 Electrical characteristics
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2 Electrical characteristics
(Tcase = 25°C; unless otherwise specified)
Table 3. Electrical characteristics
Symbol Parameter Test Conditions Min. Typ. Max. Unit
ICBO
Collector cut-off current
(IE = 0)
for BD439 VCB =60V
for BD441 VCB =80V
0.1
0.1
mA
mA
ICES
Collector cut-off current
(VBE = 0)
for BD439 VCE =60V
for BD441 VCE =80V
0.1
0.1
mA
mA
IEBO
Emitter cut-off current
(IC = 0) VEB =5V 1mA
VCEO(sus)(1)
1. Pulsed duration = 300 ms, duty cycle ≥1.5%.
Collector-emitter
sustaining voltage
(IB = 0)
IC =100mA
for BD439
for BD441
60
80
V
V
VCE(sat)(1) Collector-emitter
saturation voltage IC =2A __ IB = 0.2A 0.8 V
VBE(1) Base-emitter voltage IC =10mA_ VCE =5V
IC =2A_ VCE =1V
0.58
1.5
V
V
hFE(1) DC current gain
IC = 10mA__ VCE =5V
for BD439
for BD441
IC =500mA_ VCE =1V
for BD439
for BD441
IC =2A_ VCE =1V
for BD439
for BD441
20
15
40
40
25
15
130
130
140
140
Electrical characteristics BD439 BD441
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2.1 Electrical characteristic (curves)
Figure 2. DC current gain Figure 3. DC current gain
Figure 4. Collector-emitter saturation
voltage
Figure 5. Base-emitter saturation
voltage
Figure 6. Base-emitter on voltage
Figure 7. Resistive load switching time
BD439 BD441 Electrical characteristics
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2.2 Test circuits
Figure 9. Resistive load switching test circuit
Figure 8. Resistive load switching time
1) Fast electronic switch
2) Non-inductive resistor
Package mechanical data BD439 BD441
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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
BD439 BD441 Package mechanical data
7/9
DIM. mm.
MIN. TYP MAX.
A2.4 2.9
B 0.64 0.88
B1 0.39 0.63
D10.5 11.05
E7.4 7.8
e 2.04 2.29 2.54
e1 4.07 4.58 5.08
L15.3 16
P2.9 3.2
Q3.8
Q1 1 1.52
H2 2.15
I1.27
SOT-32 (TO-126) MECHANICAL DATA
0016114E
Revision history BD439 BD441
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4 Revision history
Table 4. Revision history
Date Revision Changes
01-Dec-2000 1 Initial Release
11-Feb-2003 2 Minor text changes
03-Apr-2007 3 The document has been reformatted.
16-Jul-2007 4 Figure 2, 3, 4, 5, 6, 7, 8 and figure 9 added.
BD439 BD441
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