January 2008 Rev 5 1/12
12
BD6xxx
Complementary power Darlington transistors
Features
■Good hFE linearity
■High fT frequency
■Monolithic Darlington configuration with
integrated antiparallel collector-emitter diode
Applications
■Linear and switching industrial equipment
Description
The devices are manufactured in planar base
island technology with monolithic Darlington
configuration.
.
Figure 1. Internal schematic diagram
SOT-32
321
R1 typ.= 15 KΩR2 typ.= 100 Ω
Table 1. Device summary
Order codes Marking Package Packaging
BD677 BD677
SOT-32 Tube
BD677A BD677A
BD678 BD678
BD678A BD678A
BD679 BD679
BD679A BD679A
BD680 BD680
BD680A BD680A
BD681 BD681
BD682 BD682
www.st.com
Contents BD6xxx
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Contents
1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Typical characteristic (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
BD6xxx Absolute maximum ratings
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1 Absolute maximum ratings
Note: For PNP types voltage and current values are negative
Table 2. Absolute maximum ratings
Symbol Parameter
Value
Unit
NPN BD677
BD677A
BD679
BD679A BD681
PNP BD678
BD678A
BD680
BD680A BD682
VCBO Collector-base voltage (IE = 0) 60 80 100 V
VCEO Collector-emitter voltage (IB = 0)
VEBO Emitte-base voltage (IC = 0) 5 V
ICCollector current 4 A
ICM Collector peak current 6 A
IBBase current 0.1 A
PTOT Total dissipation at Tcase = 25°C 40 W
Tstg Storage temperature -65 to 150 °C
TJMax. operating junction temperature 150 °C
Electrical characteristics BD6xxx
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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
ICEO
Collector cut-off current
(IB = 0) VCE = half rated VCEO 0.5 mA
ICBO
Collector cut-off current
(IE = 0)
VCE = rated VCBO
VCE = rated VCBO
Tc = 100 °C
0.2
2
mA
IEBO
Emitter cut-off current
(IC = 0) VEB = 5 V 2mA
VCEO(sus)(1) Collector-emitter
sustaining voltage (IB = 0)
for BD677, BD677A,
BD678, BD678A
IC = 50 mA
60
V
for BD679, BD679A,
BD680, BD680A
IC = 50 mA
80
for BD681, BD682
IC = 50 mA 100
VCE(sat)(1) Collector-emitter saturation
voltage
for BD677, BD678,
BD679, BD680, BD681,
BD682
IC = 1.5 A IB = 30 mA
2.5
V
for BD677A, BD678A,
BD679A, BD680A
IC = 2 A IB = 40 mA
2.8
VBE(1) Base-emitter voltage
for BD677, BD678,
BD679, BD680, BD681,
BD682
IC = 1.5 A ___ VCE = 3 V 2.5 V
for BD677A, BD678A,
BD679A, BD680A
IC = 2 A VCE = 3 V
BD6xxx Electrical characteristics
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Note: For PNP types voltage e current values are negative.
hFE(1) DC current gain
for BD677, BD678,
BD679, BD680, BD681,
BD682
IC = 1.5 A_ _ VCE = 3 V 750
for BD677A, BD678A,
BD679A, BD680A
IC = 2 A_ _ VCE = 3 V
1. Pulsed duration = 300 ms, duty cycle ≥1.5%.
Table 3. Electrical characteristics (continued)
Symbol Parameter Test conditions Min. Typ. Max. Unit
Electrical characteristics BD6xxx
6/12
2.1 Typical characteristic (curves)
Figure 2. DC current gain (NPN) Figure 3. DC current gain (PNP)
Figure 4. DC current gain (NPN) Figure 5. DC current gain (PNP)
Figure 6. Collector-emitter saturation
voltage (NPN)
Figure 7. Collector-emitter saturation
voltage (PNP)
BD6xxx Electrical characteristics
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Figure 8. Base-emitter saturation
voltage (NPN)
Figure 9. Base-emitter saturation
voltage (PNP)
Figure 10. Base-emitter voltage (NPN) Figure 11. Base-emitter voltage (PNP)
Figure 12. Resistive load switching time
(NPN, on)
Figure 13. Resistive load switching time
(PNP, on)
Electrical characteristics BD6xxx
8/12
2.2 Test circuit
Note: For PNP types voltage e current values are negative.
Figure 14. Resistive load switching time
(NPN, off)
Figure 15. Resistive load switching time
(PNP, off)
Figure 16. Resistive load switching test circuit
1) Fast electronic switch
2) Non-inductive resistor
BD6xxx Package mechanical data
9/12
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
Package mechanical data BD6xxx
10/12
BD6xxx
12/12
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