BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
Copyright © 1997, Power Innovations Limited, UK
AUGUST 1978 - REVISED MARCH 1997
q
Designed for Complementary Use with the
BD744 Series
90 W at 25°C Case Temperature
15 A Continuous Collector Current
20 A Peak Collector Current
Customer-Specified Selections Available
B
C
E
q
q
q
q
TO-220 PACKAGE
(TOP VIEW)
1
2
3
Pin 2 is in electrical contact with the mounting base.
MDTRACA
absolute maximum ratings
at 25°C case temperature (unless otherwise noted)
RATING
BD743
Collector-base voltage (I
E
= 0)
BD743A
BD743B
BD743C
BD743
Collector-emitter voltage (I
B
= 0)
BD743A
BD743B
BD743C
Emitter-base voltage
Continuous collector current
Peak collector current (see Note 1)
Continuous base current
Continuous device dissipation at (or below) 25°C case temperature (see Note 2)
Continuous device dissipation at (or below) 25°C free air temperature (see Note 3)
Unclamped inductive load energy (see Note 4)
Operating free air temperature range
Operating junction temperature range
Storage temperature range
Lead temperature 3.2 mm from case for 10 seconds
NOTES: 1.
2.
3.
4.
V
EBO
I
C
I
CM
I
B
P
tot
P
tot
½LI
C
T
A
T
j
T
stg
T
L
2
SYMBOL
VALUE
50
70
90
110
45
60
80
100
5
15
20
5
90
2
90
-65 to +150
-65 to +150
-65 to +150
250
UNIT
V
CBO
V
V
CEO
V
V
A
A
A
W
W
mJ
°C
°C
°C
°C
This value applies for t
p
≤
0.3 ms, duty cycle
≤
10%.
Derate linearly to 150°C case temperature at the rate of 0.72 W/°C.
Derate linearly to 150°C free air temperature at the rate of 16 mW/°C.
This rating is based on the capability of the transistor to operate safely in a circuit of: L = 20 mH, I
B(on)
= 0.4 A, R
BE
= 100
Ω,
V
BE(off)
= 0, R
S
= 0.1
Ω,
V
CC
= 20 V.
PRODUCT
INFORMATION
Information is current as of publication date. Products conform to specifications in accordance
with the terms of Power Innovations standard warranty. Production processing does not
necessarily include testing of all parameters.
1
BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
AUGUST 1978 - REVISED MARCH 1997
electrical characteristics at 25°C case temperature (unless otherwise noted)
PARAMETER
Collector-emitter
breakdown voltage
TEST CONDITIONS
BD743
V
(BR)CEO
I
C
= 30 mA
I
B
= 0
(see Note 5)
BD743A
BD743B
BD743C
V
CE
= 50 V
V
CE
= 70 V
V
CE
= 90 V
I
CBO
Collector cut-off
current
V
CE
= 110 V
V
CE
= 50 V
V
CE
= 70 V
V
CE
= 90 V
V
CE
= 110 V
I
CEO
I
EBO
Collector cut-off
current
Emitter cut-off
current
Forward current
transfer ratio
Collector-emitter
saturation voltage
Base-emitter
voltage
Small signal forward
current transfer ratio
Small signal forward
current transfer ratio
V
CE
= 30 V
V
CE
= 60 V
V
EB
=
V
CE
=
V
CE
=
V
CE
=
I
B
=
I
B
=
V
CE
=
V
CE
=
5V
4V
4V
4V
0.5 A
5A
4V
4V
V
BE
= 0
V
BE
= 0
V
BE
= 0
V
BE
= 0
V
BE
= 0
V
BE
= 0
V
BE
= 0
V
BE
= 0
I
B
= 0
I
B
= 0
I
C
= 0
I
C
= 1 A
I
C
= 5 A
I
C
= 15 A
I
C
= 5 A
I
C
= 15 A
I
C
= 5 A
I
C
= 15 A
I
C
= 1 A
I
C
= 1 A
(see Notes 5 and 6)
(see Notes 5 and 6)
f = 1 kHz
f = 1 MHz
25
5
(see Notes 5 and 6)
40
20
5
1
3
1
3
V
V
150
T
C
= 125°C
T
C
= 125°C
T
C
= 125°C
T
C
= 125°C
BD743
BD743A
BD743B
BD743C
BD743
BD743A
BD743B
BD743C
BD743/743A
BD743B/743C
MIN
45
60
80
100
0.1
0.1
0.1
0.1
5
5
5
5
0.1
0.1
0.5
mA
mA
mA
V
TYP
MAX
UNIT
h
FE
V
CE(sat)
V
BE
h
fe
V
CE
= 10 V
V
CE
= 10 V
|
h
fe
|
NOTES: 5. These parameters must be measured using pulse techniques, t
p
= 300 µs, duty cycle
≤
2%.
6. These parameters must be measured using voltage-sensing contacts, separate from the current carrying contacts.
thermal characteristics
PARAMETER
R
θ
JC
R
θ
JA
Junction to case thermal resistance
Junction to free air thermal resistance
MIN
TYP
MAX
1.4
62.5
UNIT
°C/W
°C/W
resistive-load-switching characteristics at 25°C case temperature
PARAMETER
t
d
t
r
t
s
t
f
†
TEST CONDITIONS
I
C
= 5 A
V
BE(off)
= -4.2 V
I
B(on)
= 0.5 A
R
L
= 6
Ω
†
MIN
I
B(off)
= -0.5 A
t
p
= 20 µs, dc
≤
2%
TYP
20
350
500
400
MAX
UNIT
ns
ns
ns
ns
Delay time
Rise time
Storage time
Fall time
Voltage and current values shown are nominal; exact values vary slightly with transistor parameters.
PRODUCT
INFORMATION
2
BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
AUGUST 1978 - REVISED MARCH 1997
TYPICAL CHARACTERISTICS
TYPICAL DC CURRENT GAIN
vs
COLLECTOR CURRENT
100
TCS637AA
COLLECTOR-EMITTER SATURATION VOLTAGE
vs
COLLECTOR CURRENT
V
CE(sat)
- Collector-Emitter Saturation Voltage - V
10
I
C
= 10
I
B
t
p
= 300µs, duty cycle < 2%
TCS637AB
T
C
= 125°C
T
C
= 25°C
T
C
= -55°C
h
FE
- DC Current Gain
1·0
0·1
V
CE
= 4 V
t
p
= 300 µs, duty cycle < 2%
10
0·1
1·0
10
100
T
C
= -55°C
T
C
= 25°C
T
C
= 125°C
0·01
0·1
1·0
10
100
I
C
- Collector Current - A
I
C
- Collector Current - A
Figure 1.
Figure 2.
BASE-EMITTER VOLTAGE
vs
COLLECTOR CURRENT
10
V
CE
= 4 V
t
p
= 300µs, duty cycle < 2%
V
BE
- Base-Emitter Voltage - V
TCS637AC
1·0
T
C
= -55°C
T
C
= 25°C
T
C
= 125°C
0·1
0·1
1·0
10
100
I
C
- Collector Current - A
Figure 3.
PRODUCT
INFORMATION
3
BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
AUGUST 1978 - REVISED MARCH 1997
MAXIMUM SAFE OPERATING REGIONS
MAXIMUM FORWARD-BIAS
SAFE OPERATING AREA
100
SAS637AA
I
C
- Collector Current - A
10
t
p
= 1 ms,
d = 0.1 = 10%
t
p
= 10 ms,
d = 0.1 = 10%
t
p
= 50 ms,
d = 0.1 = 10%
DC Operation
1·0
0·1
BD743
BD743A
BD743B
BD743C
0·01
1·0
10
100
1000
V
CE
- Collector-Emitter Voltage - V
Figure 4.
THERMAL INFORMATION
MAXIMUM POWER DISSIPATION
vs
CASE TEMPERATURE
100
P
tot
- Maximum Power Dissipation - W
90
80
70
60
50
40
30
20
10
0
0
25
50
75
100
125
150
T
C
- Case Temperature - °C
TIS637AA
Figure 5.
PRODUCT
INFORMATION
4
BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
AUGUST 1978 - REVISED MARCH 1997
MECHANICAL DATA
TO-220
3-pin plastic flange-mount package
This single-in-line package consists of a circuit mounted on a lead frame and encapsulated within a plastic
compound. The compound will withstand soldering temperature with no deformation, and circuit performance
characteristics will remain stable when operated in high humidity conditions. Leads require no additional
cleaning or processing when used in soldered assembly.
TO220
4,70
4,20
ø
3,96
3,71
10,4
10,0
2,95
2,54
6,6
6,0
15,90
14,55
1,32
1,23
see Note B
see Note C
6,1
3,5
0,97
0,61
1
2
3
1,70
1,07
14,1
12,7
2,74
2,34
5,28
4,88
2,90
2,40
0,64
0,41
VERSION 1
VERSION 2
ALL LINEAR DIMENSIONS IN MILLIMETERS
NOTES: A. The centre pin is in electrical contact with the mounting tab.
B. Mounting tab corner profile according to package version.
C. Typical fixing hole centre stand off height according to package version.
Version 1, 18.0 mm. Version 2, 17.6 mm.
MDXXBE
PRODUCT
INFORMATION
5
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