NTE272 (NPN) & NTE273 (PNP)
Silicon Darlington Complementary
Power Amplifiers
Description:
The NTE272 (NPN) and NTE273 (PNP) are silicon complementary Power Amplifiers in a TO202 type
case designed for use in complementary amplifiers and driver applications.
Features:
D
High DC Current Gain:
h
FE
= 25,000 (Min) @ I
C
= 200mA
= 15,000 (Min) @ I
C
= 500mA
D
Collector–Emitter Breakdown Voltage:
V
(BR)CES
= 40V @ I
C
= 500mA
D
Low Collector–Emitter Saturation Voltage:
V
CE(sat)
= 1.5V @ I
C
= 1A
D
Monolithic Construction for High Reliability
Absolute Maximum Ratings:
Collector–Emitter Voltage (Note 2), V
CEO
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Collector–Emitter Voltage, V
CES
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Collector–Base Voltage, V
CB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V
Emitter–Base Voltage, V
EB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Collector Current, I
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2A
Total Power Dissipation (T
A
= +25°C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Derate above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mW/°C
Total Power Dissipation (T
C
= +25°C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10W
Derate above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80mW/°C
Operating Junction Temperature Range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55 to +150°C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55 to +150°C
Thermal Resistance, Junction–to–Ambient, R
thJA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125°C/W
Thermal Resistance, Junction–to–Case, R
thJC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.5°C/W
Note 1.
NTE273
is a
discontinued
device and
no longer
available.
Note 2. Due to the monolithic construction of this device, breakdown voltages of both transistor ele-
ments are identical. V
(BR)CES
is tested in lieu of V
(BR)CEO
in order to avoid errors caused
by noise pickup. The voltage measured during the V
(BR)CES
test is the V
(BR)CEO
of the output
transistor.
Electrical Characteristics:
(T
A
= +25°C unless otherwise specified)
Parameter
OFF Characteristics
Collector–Emitter Breakdown Voltage
Collector–Base Breakdown Voltage
Emitter–Base Breakdown Voltage
Collector Cutoff Current
Emitter Cutoff Current
ON Characteristics
(Note 3)
DC Current Gain
|h
fe
|
I
C
= 200mA, V
CE
= 5V
I
C
= 500mA, V
CE
= 5V
I
C
= 1A, V
CE
= 5V
Collector–Emitter Saturation Voltage
Base–Emitter Saturation Voltage
Base–Emitter ON Voltage
Dynamic Characteristics
Small–Signal Current Gain
Collector–Base Capacitance
h
FE
C
cb
I
C
= 200mA, V
CE
= 5V,
f = 100MHz, Note 2
V
CB
= 10V, I
E
= 0, f = 1MHz
1.0
–
3.2
2.5
–
6.0
pF
V
CE(sat)
V
BE(sat)
V
BE(ON)
I
C
= 1A, I
B
= 2mA
I
C
= 1A, I
B
= 2mA
I
C
= 1A, V
CE
= 5V
25,000
15,000
4,000
–
–
–
65,000
35,000
12,000
1.2
1.85
1.7
150,000
–
–
1.5
2.0
2.0
V
V
V
V
(BR)CES
I
C
= 100µA, V
BE
= 0
V
(BR)CBO
I
C
= 100µA, I
E
= 0
V
(BR)EBO
I
E
= 10µA, I
C
= 0
I
CBO
I
EBO
V
CB
= 30V, I
E
= 0
V
EB
= 10V, I
C
= 0
40
50
12
–
–
–
–
–
–
–
–
–
–
100
100
V
V
V
nA
nA
Symbol
Test Conditions
Min
Typ
Max
Unit
Note 3. Pulse test: Pulse Width
≤
300µs, Duty Cycle
≤
2.0%.
NTE272 Schematic
C
B
.160
(4.06)
.380 (9.65) Max
.050 (1.27)
E
NTE273 Schematic
C
B
.475
(12.0)
Min
E B C
.218
(5.55)
.280 (7.25) Max
.128 (3.28) Dia
.995
(25.3)
E
Uniwatt darlington transistors can be used in any
number of low power applications, such as relay
drivers, motor control and as general purpose
amplifiers. As an audio amplifier these devices,
when used as a complementary pair, can drive
3.5 watts into a 3.2ohm speaker using a 14 volt
supply with less than one per cent distortion. Be-
cause of the high gain the base drive requirement
is as low as 1mA in this application. They are also
useful as power drivers for high current applica-
tion such as voltage regulators.
.100 (2.54)
.200 (5.08)
Collector Connected to Tab
TO202N