Power Innovations BD745C, BD745B, BD745A, BD745 Datasheet
BD745, BD745A, BD745B, BD745C
NPN SILICON POWER TRANSISTORS
AUGUST 1978 - REVISED MARCH 1997Copyright © 1997, Power Innovations Limited, UK
● Designed for Complementary Use with the
BD746 Series
SOT-93 PACKAGE
(TOP VIEW)
● 115 W at 25°C Case Temperature
B
1
● 20 A Continuous Collector Current
● 25 A Peak Collector Current
C
2
● Customer-Specified Selections Available
E
Pin 2 is in electrical contact with the mounting base.
3
absolute maximum ratings at 25°C case temperature (unless otherwise noted)
RATING SYMBOL VALUE UNIT
BD745
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 0.92 W/°C.
3. Derate linearly to 150°C free air temperature at the rate of 28 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)
BD745A
BD745B
BD745C
BD745
BD745A
BD745B
BD745C
V
V
CBO
CEO
EBO
C
CM
B
tot
tot
A
stg
L
C
j
2
B(on)
50
70
90
110
45
60
80
100
5 V
20 A
25 A
7 A
115 W
3.5 W
90 mJ
-65 to +150 °C
-65 to +150 °C
-65 to +150 °C
260 °C
= 0.4 A, RBE = 100 Ω,
MDTRAA
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
BD745, BD745A, BD745B, BD745C
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
BD745
V
(BR)CEO
Collector-emitter
breakdown voltage
= 30 mA IB = 0 (see Note 5)
I
C
BD745A
BD745B
BD745C
I
CBO
I
CEO
I
EBO
h
V
CE(sat)
V
|hfe|
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
h
fe
current transfer ratio
Small signal forward
current transfer ratio
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
= 20 A
= 5 A
= 20 A
= 5 A
= 20 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)
BD745
BD745A
BD745B
BD745C
BD745
BD745A
BD745B
BD745C
BD745/745A
BD745B/745C
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.
45
60
80
100
40
20
V
0.1
0.1
0.1
0.1
mA
5
5
5
5
0.1
0.1
mA
150
5
1
3
1
3
V
V
thermal characteristics
PARAMETER MIN TYP MAX UNIT
R
R
Junction to case thermal resistance 1.1 °C/W
θJC
Junction to free air thermal resistance 35.7 °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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