Diodes ZTX851 User Manual
NPN SILICON PLANAR MEDIUM POWER
HIGH CURRENT TRANSISTOR
ISSUE 2 AUGUST 94
FEATURES
* 60 Volt V
* 5 Amps continuous current
* Up to 20 Amps peak current
* Very low saturation voltage
*P
APPLICATIONS
* Emergency lighting circuits
ABSOLUTE MAXIMUM RATINGS.
PARAMETER SYMBOL VALUE UNIT
Collector-Base Voltage V
Collector-Emitter Voltage V
Emitter-Base Voltage V
Peak Pulse Current I
Continuous Collector Current I
Practical Power Dissipation* P
Power Dissipation at T
Operating and Storage Temperature Range T
*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
PARAMETER SYMBOL MIN. TYP. MAX. UNIT CONDITIONS.
Collector-Base Breakdown
Voltage
Collector-Emitter Breakdown
Voltag
Collector-Emitter Breakdown
Voltage
Emitter-Base Breakdown
Voltage
Collector Cut-Off Current I
Collector Cut-Off Current I
Emitter Cut-Off Current I
Collector-Emitter Saturation
Voltage
Base-Emitter
Saturation Voltage
=1.2 Watts
tot
CEO
=25°C P
amb
V
(BR)CBO
V
(BR)CER
V
(BR)CEO
V
(BR)EBO
CBO
CER
R ≤1KΩ
EBO
V
CE(sat)
V
BE(sat)
CBO
CEO
EBO
CM
C
totp
tot
j:Tstg
= 25°C unless otherwise stated)
amb
-55 to +200 °C
150 220 V
150 220 V
60 85 V IC=10mA*
68 V
50
nA
1
µA
50
nA
1
µA
10 nA VEB=6V
10
50
100
200
100
150
250
mV
mV
mV
mV
50
920 1050 mV IC=4A, IB=200mA*
3-294
ZTX851
C
B
E
E-Line
TO92 Compatible
150 V
60 V
6V
20 A
5A
1.58 W
1.2 W
=100µA
I
C
µA, RB ≤1KΩ
IC=1
=100µA
I
E
=120V
V
CB
V
=120V, T
CB
V
=120V
CB
V
=120V, T
CB
I
=0.1A, IB=5mA*
C
I
=1A, IB=50mA*
C
=2A, IB=50mA*
I
C
I
=5A, IB=200mA*
C
amb
amb
=100°C
=100°C
ZTX851
ELECTRICAL CHARACTERISTICS (at T
amb
= 25°C)
PARAMETER SYMBOL MIN. TYP. MAX. UNIT CONDITIONS.
Base-Emitter
Turn-On Voltage
Static Forward
Current Transfer
V
h
BE(on)
FE
Ratio
Transition Frequency f
Output Capacitance C
Switching Times t
T
obo
on
t
off
*Measured under pulsed conditions. Pulse width=300
840 950 mV IC=4A, VCE=1V*
100
100
75
25
200
200
120
50
300
I
I
I
I
130 MHz IC=100mA, VCE=10V
f=50MHz
45 pF VCB=10V, f=1MHz
45
1100
ns
ns
IC=1A, IB!=100mA
I
µs. Duty cycle ≤2%
=10mA, VCE=1V
C
=2A, VCE=1V*
C
=5A, VCE=1V*
C
=10A, VCE=1V*
C
=100mA, VCC=10V
B2
THERMAL CHARACTERISTICS
PARAMETER SYMBOL MAX. UNIT
Thermal Resistance: Junction to Ambient
Junction to Case
R
th(j-amb)
R
th(j-case)
150
50
°C/W
°C/W
)
s
tt
a
(W
tion
ipa
iss
D
ower
P
x
a
M
4.0
3.0
2.0
1.0
-40
-20 0 20
T -Temperature (°C)
Case te
mperatu
Ambien
t t
empe
rat
ure
40 60 80 100 120 200180160140
r
e
Derating curve
150
100
50
Thermal Resistance (°C/W)
0
Maximum transient thermal impedance
0.0001
D.C.
t
1
D=t
1/tP
t
P
D=0.6
D=0.2
D=0.1
D=0.05
Single Pulse
0.001
Pulse Width (seconds)
10 10010.10.01
3-295
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