BD743, BD743A, BD743B, BD743C
NPN SILICON POWER TRANSISTORS
PRODUCT INFORMATION
1
AUGUST 1978 - REVISED MARCH 1997Copyright © 1997, Power Innovations Limited, U K
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.
a71 Designed for Complementary Use with the
BD744 Series
a71 90 W at 25°C Case Temperature
a71 15 A Continuous Collector Current
a71 20 A Peak Collector Current
a71 Customer-Specified Selections Available
B
C
E
TO-220 PACKAGE
(TOP VIEW)
Pin 2 is in electrical contact with the mounting base.
MDTRACA
1
2
3
absolute maximum ratings at 25°C case temperature (unless otherwise noted)
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, IB(on) = 0.4 A, RBE = 100 Ω,
VBE(off) = 0, RS = 0.1 Ω, VCC = 20 V.
RATING SYMBOL VALUE UNIT
Collector-base voltage (IE = 0)
BD743
BD743A
BD743B
BD743C
VCBO
50
70
90
110
V
Collector-emitter voltage (IB = 0)
BD743
BD743A
BD743B
BD743C
VCEO
45
60
80
100
V
Emitter-base voltage VEBO 5 V
Continuous collector current IC 15 A
Peak collector current (see Note 1) ICM 20 A
Continuous base current IB 5 A
Continuous device dissipation at (or below) 25°C case temperature (see Note 2) Ptot 90 W
Continuous device dissipation at (or below) 25°C free air temperature (see Note 3) Ptot 2 W
Unclamped inductive load energy (see Note 4) ½LIC2 90 mJ
Operating free air temperature range TA -65 to +150 °C
Operating junction temperature range Tj -65 to +150 °C
Storage temperature range Tstg -65 to +150 °C
Lead temperature 3.2 mm from case for 10 seconds TL 250 °C