NPN SILICON PLANAR MEDIUM POWER
HIGH CURRENT TRANSISTOR
ISSUE 1 APRIL 94
FEATURES
* 300 Volt V
CEO
* 3 Amps continuous current
* Up to 5 Amps peak current
* Very low saturation voltage
* P
tot
= 1.2 Watt
ZTX857
C
B
E
ABSOLUTE MAXIMUM RATINGS.
PARAMETER
Collector-Base Voltage
Collector-Emitter Voltage
Emitter-Base Voltage
Peak Pulse Current
Continuous Collector Current
Practical Power Dissipation*
Power Dissipation at T
amb
=25°C
Operating and Storage Temperature Range
SYMBOL
V
CBO
V
CEO
V
EBO
I
CM
I
C
P
totp
P
tot
T
j
:T
stg
330
300
6
5
3
1.58
1.2
E-Line
TO92 Compatible
VALUE
UNIT
V
V
V
A
A
W
W
°C
-55 to +200
*The power which can be dissipated assuming the device is mounted in a typical manner on a
P.C.B. with copper equal to 1 inch square minimum
ELECTRICAL CHARACTERISTICS (at T
amb
= 25°C unless otherwise stated)
PARAMETER
Collector-Base Breakdown
Voltage
Collector-Emitter Breakdown
Voltag
Collector-Emitter Breakdown
Voltage
Emitter-Base Breakdown
Voltage
Collector Cut-Off Current
Collector Cut-Off Current
Emitter Cut-Off Current
Collector-Emitter Saturation
Voltage
SYMBOL
V
(BR)CBO
V
(BR)CER
V
(BR)CEO
V
(BR)EBO
I
CBO
I
CER
R
≤
1K
Ω
I
EBO
V
CE(sat)
50
80
140
170
870
3-303
MIN.
330
330
300
6
TYP.
475
475
350
8
50
1
50
1
10
100
140
200
250
1000
MAX.
UNIT
V
V
V
V
nA
nA
nA
mV
mV
mV
mV
mV
CONDITIONS.
I
C
=100
µ
A
IC=1
µ
A, RB
≤
1K
Ω
I
C
=10mA*
I
E
=100
µ
A
V
CB
=300V
V
CB
=300V, T
amb
=100°C
V
CB
=300V
V
CB
=300V, T
amb
=100°C
V
EB
=6V
I
C
=0.5A, I
B
=50mA*
I
C
=1A, I
B
=100mA*
I
C
=2A, I
B
=200mA*
I
C
=3A, I
B
=600mA*
I
C
=2A, I
B
=200mA*
µ
A
µ
A
Base-Emitter
Saturation Voltage
V
BE(sat)
ZTX857
ELECTRICAL CHARACTERISTICS (at T
amb
= 25°C)
PARAMETER
Base-Emitter
Turn-On Voltage
Static Forward
Current Transfer
Ratio
Transition Frequency
Output Capacitance
Switching Times
SYMBOL
V
BE(on)
h
FE
100
100
15
MIN.
TYP.
810
200
200
25
15
80
11
100
5300
MAX.
950
300
MHz
pF
ns
ns
UNIT
mV
CONDITIONS.
IC=2A, V
CE
=5V*
I
C
=10mA, V
CE
=5V
I
C
=500mA, V
CE
=10V*
I
C
=2A, V
CE
=10V*
I
C
=3A, V
CE
=10V*
I
C
=100mA, V
CE
=10V
f=100MHz
V
CB
=20V, f=1MHz
I
C
=250mA, I
B1
=25mA
I
B2
=25mA, V
CC
=50V
f
T
C
obo
t
on
t
off
*Measured under pulsed conditions. Pulse width=300
µ
s. Duty cycle
≤
2%
THERMAL CHARACTERISTICS
PARAMETER
Thermal Resistance: Junction to Ambient
Junction to Case
SYMBOL
R
th(j-amb)
R
th(j-case)
MAX.
150
50
UNIT
°C/W
°C/W
Max Power Dissipation - (Watts)
4.0
Thermal Resistance (°C/W)
150
t
1
D.C.
D=t
1
/t
P
3.0
Ca
se
100
te
t
P
D=0.6
2.0
m
1.0
Amb
ient t
emp
eratu
-40 -20
0
20 40
pe
ra
tu
re
50
D=0.2
D=0.1
re
60 80 100 120 140 160 180 200
0
0.0001
D=0.05
Single Pulse
0.001
0.01
0.1
1
10
100
T -Temperature
(°C)
Pulse Width (seconds)
Derating curve
Maximum transient thermal impedance
3-304
ZTX857
TYPICAL CHARACTERISTICS
0.8
1.6
h
FE
- Normalised Gain
300
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.01
0.1
1
10
V
CE
=10V
V
CE
=2V
100
0.6
200
0.4
I
C
/I
B
=10
I
C
/I
B
=50
0.2
0
0.001
0.01
0.1
1
10
I
C
-
Collector Current (Amps)
I
C
-
Collector Current (Amps)
V
CE(sat)
v I
C
h
FE
v I
C
V
CE
=5V
2.0
2.0
V
BE(sat)
- (Volts)
1.5
V
BE
- (Volts)
I
C
/I
B
=10
I
C
/I
B
=50
1.5
1.0
1.0
0.5
0.0001
0.001
0.01
0.1
1
10
0.5
0.0001
0.001
0.01
0.1
1
10
I
C
-
Collector Current (Amps)
I
C
-
Collector Current (Amps)
V
BE(sat)
v I
C
10
Single Pulse Test at T
amb
=25°C
V
BE(on)
v I
C
I
C
- Collector Current (Amps)
1
0.1
D.C.
1s
100ms
10ms
1.0ms
0.1ms
0.01
0.1
1
10
100
1000
V
CE
-
Collector Voltage (Volts)
Safe Operating Area
3-305
h
FE
- Typical Gain
V
CE(sat)
- (Volts)
1.4
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