MJE170, MJE171, MJE172 (PNP), MJE180, MJE181, MJE182 (NPN)
T
A
2.8
PD, POWER DISSIPATION (WATTS)
2.4
2.0
T
C
14
12
10
T
C
1.6 8.0
1.2 6.0
0.8 4.0
0.4 2.0
0
0
T
A
20
40
60
80
100
120
140
160
T, TEMPERATURE (°C)
Figure 1. Power Derating
V
CC
+30 V
R
C
R
B
D
1
SCOPE
t, TIME (ns)
1K
500
300
200
100
50
30
20
10
5
3
2
NPN MJE181/182
PNP MJE171/172
3
5
10
t
r
V
CE
= 30 V
I
C
/I
B
= 10
V
BE(off)
= 4.0 V
T
J
= 25°C
25
ms
+11 V
0
−9.0 V
51
t
r
, t
f
≤
10 ns
−4 V
DUTY CYCLE =
1.0%
R
B
and R
C
VARIED TO OBTAIN DESIRED CURRENT LEVELS
D
1
MUST BE FAST RECOVERY TYPE, e.g.:
1N5825 USED ABOVE I
B
≈
100 mA
MSD6100 USED BELOW I
B
≈
100 mA
FOR PNP TEST CIRCUIT, REVERSE ALL POLARITIES.
t
d
1
0.01 0.02 0.03 0.05 0.1
0.2 0.3 0.5
1
2
I
C
, COLLECTOR CURRENT (AMPS)
Figure 2. Switching Time Test Circuit
Figure 3. Turn−On Time
r(t), TRANSIENT THERMAL
RESISTANCE (NORMALIZED)
1.0
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.01
0.02
D = 0.5
0.2
0.1
0.05
0.02
0.01
0 (SINGLE PULSE)
q
JC
(t) = r(t)
q
JC
q
JC
= 10°C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t
1
T
J(pk)
− T
C
= P
(pk)
q
JC
(t)
P
(pk)
t
1
t
2
DUTY CYCLE, D = t
1
/t
2
0.05
0.1
0.2
0.5
1.0
2.0
t, TIME (ms)
5.0
10
20
50
100
200
Figure 4. Thermal Response
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