Power Innovations BD743C, BD743B, BD743A, BD743 Datasheet
● Designed for Complementary Use with the
BD744 Series
● 90 W at 25°C Case Temperature
BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
AUGUST 1978 - REVISED MARCH 1997Copyright © 1997, Power Innovations Limited, UK
TO-220 PACKAGE
(TOP VIEW)
● 15 A Continuous Collector Current
● 20 A Peak Collector Current
● Customer-Specified Selections Available
B
C
E
1
2
3
Pin 2 is in electrical contact with the mounting base.
absolute maximum ratings at 25°C case temperature (unless otherwise noted)
RATING SYMBOL VALUE UNIT
BD743
Collector-base voltage (I
Collector-emitter voltage (I
E
= 0)
= 0)
B
Emitter-base voltage V
Continuous collector current I
Peak collector current (see Note 1) I
Continuous base current I
Continuous device dissipation at (or below) 25°C case temperature (see Note 2) P
Continuous device dissipation at (or below) 25°C free air temperature (see Note 3) P
Unclamped inductive load energy (see Note 4) ½LI
Operating free air temperature range T
Operating junction temperature range T
Storage temperature range T
Lead temperature 3.2 mm from case for 10 seconds T
NOTES: 1. This value applies for tp ≤ 0.3 ms, duty cycle ≤ 10%.
2. Derate linearly to 150°C case temperature at the rate of 0.72 W/°C.
3. Derate linearly to 150°C free air temperature at the rate of 16 mW/°C.
4. This rating is based on the capability of the transistor to operate safely in a circuit of: L = 20 mH, I
= 0, RS = 0.1 Ω, VCC = 20 V.
V
BE(off)
BD743A
BD743B
BD743C
BD743
BD743A
BD743B
BD743C
V
V
CBO
CEO
EBO
C
CM
B
tot
tot
A
stg
L
C
j
2
B(on)
MDTRACA
50
70
90
110
45
60
80
100
5 V
15 A
20 A
5 A
90 W
2 W
90 mJ
-65 to +150 °C
-65 to +150 °C
-65 to +150 °C
250 °C
= 0.4 A, RBE = 100 Ω,
V
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 TEST CONDITIONS MIN TYP MAX UNIT
BD743
V
(BR)CEO
I
CBO
I
CEO
I
EBO
h
V
CE(sat)
V
h
|hfe|
Collector-emitter
breakdown voltage
Collector cut-off
current
Collector cut-off
current
Emitter cut-off
current
Forward current
FE
transfer ratio
Collector-emitter
saturation voltage
Base-emitter
BE
voltage
Small signal forward
fe
current transfer ratio
Small signal forward
current transfer ratio
= 30 mA IB = 0 (see Note 5)
I
C
V
= 50 V
CE
= 70 V
V
CE
= 90 V
V
CE
= 110 V
V
CE
= 50 V
V
CE
= 70 V
V
CE
= 90 V
V
CE
= 110 V
V
CE
VCE= 30 V
= 60 V
V
CE
= 5 V IC= 0 0.5 mA
V
EB
V
= 4 V
CE
= 4 V
V
CE
= 4 V
V
CE
IB = 0.5 A
= 5 A
I
B
VCE = 4 V
= 4 V
V
CE
= 10 V IC= 1 A f = 1 kHz 25
V
CE
= 10 V IC= 1 A f = 1 MHz 5
V
CE
V
BE
V
BE
V
BE
V
BE
V
BE
V
BE
V
BE
V
BE
I
B
I
B
I
C
I
C
I
C
I
C
I
C
I
C
I
C
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 1 A
= 5 A
= 15 A
= 5 A
= 15 A
= 5 A
= 15 A
T
= 125°C
C
= 125°C
T
C
= 125°C
T
C
= 125°C
T
C
(see Notes 5 and 6)
(see Notes 5 and 6)
(see Notes 5 and 6)
NOTES: 5. These parameters must be measured using pulse techniques, tp = 300 µs, duty cycle ≤ 2%.
6. These parameters must be measured using voltage-sensing contacts, separate from the current carrying contacts.
BD743A
BD743B
BD743C
BD743
BD743A
BD743B
BD743C
BD743
BD743A
BD743B
BD743C
BD743/743A
BD743B/743C
45
60
80
100
40
20
5
0.1
0.1
0.1
0.1
5
5
5
5
0.1
0.1
150
1
3
1
3
V
mA
mA
V
V
thermal characteristics
PARAMETER MIN TYP MAX UNIT
R
R
Junction to case thermal resistance 1.4 °C/W
θJC
Junction to free air thermal resistance 62.5 °C/W
θJA
resistive-load-switching characteristics at 25°C case temperature
PARAMETER TEST CONDITIONS
Delay time
t
d
t
Rise time 350 ns
r
Storage time 500 ns
t
s
Fall time 400 ns
t
f
†
Voltage and current values shown are nominal; exact values vary slightly with transistor parameters.
I
C
V
BE(off)
= 5 A
= -4.2 V
I
B(on)
R
= 6 Ω
L
= 0.5 A
†
I
= -0.5 A
B(off)
= 20 µs, dc ≤ 2%
t
p
PRODUCT INFORMATION
MIN TYP MAX UNIT
20 ns
2
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