MJE2955T (PNP), MJE3055T (NPN)
www.onsemi.com
3
10
5.0
Figure 1. Active−Region Safe Operating Area
V
CE
, COLLECTOR-EMITTER VOLTAGE (VOLTS)
5.0
2.0
1.0
0.2
0.1
20 30
SECOND BREAKDOWN LIMITED
BONDING WIRE LIMITED
THERMALLY LIMITED
T
C
= 25°C (D = 0.1)
I
C
, COLLECTOR CURRENT (AMP)
dc
7.0 10
5.0 ms
1.0ms
50 60
0.5
7.0
3.0
0.7
0.3
T
J
= 150°C
100ms
There are two limitations on the power handling ability of
a transistor: average junction temperature and second
breakdown. Safe operating area curves indicate I
C
− V
CE
limits of the transistor that must be observed for reliable
operation; i.e., the transistor must not be subjected to greater
dissipation than the curves indicate.
The data of Figure 1 is based on T
J(pk)
= 150°C. T
C
is
variable depending on conditions. Second breakdown pulse
limits are valid for duty cycles to 10% provided
T
J(pk)
≤ 150°C. At high case temperatures, thermal
limitations will reduce the power that can be handled to
values less than the limitations imposed by second
breakdown.
0
T
C
, CASE TEMPERATURE (°C)
75 100 17525 50
Figure 2. DC Current Gain
125 150
500
0.01
Figure 3. Power Derating
I
C
, COLLECTOR CURRENT (AMP)
5.0
0.02 0.05 0.1 0.2 1.0 2.0 100.5
300
200
100
50
30
90
0
80
60
40
70
50
h
FE
, DC CURRENT GAIN
20
10
5.0
T
J
= 150°C
25°C
-55°C
V
CE
= 2.0 V
P
D
, POWER DISSIPATION (WATTS)
30
10
20
MJE3055T
MJE2955T
0.1
I
C
, COLLECTOR CURRENT (AMP)
0.5 1.0 100.2 0.3 2.0 3.0
Figure 4. “On” Voltages
2.0
0
1.6
1.2
0.8
V, VOLTAGE (VOLTS)
0.4
5.0
T
J
= 25°C
V
BE(sat)
@ I
C
/I
B
= 10
V
BE
@ V
CE
= 3.0 V
V
CE(sat)
@ I
C
/I
B
= 10
MJE2955T
0.1
I
C
, COLLECTOR CURRENT (AMP)
0.5 1.0 100.2 0.3 2.0 3.0
1.4
0
1.2
1.0
0.8
V, VOLTAGE (VOLTS)
0.4
5.0
T
J
= 25°C
V
BE(sat)
@ I
C
/I
B
= 10
V
BE
@ V
CE
= 2.0 V
V
CE(sat)
@ I
C
/I
B
= 10
MJE3055T
0.6
0.2