3
Motorola Bipolar Power Transistor Device Data
t, TIME (ms)
0.01
0.02 0.05 1.0 2.0 5.0 10 20 50 100 2000.1 0.50.2
1.0
0.2
0.1
0.05
r(t), TRANSIENT THERMAL
θ
JC(t) = r(t)
θ
JC
θ
JC = 10
°
C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk)
θ
JC(t)
P(pk)
t1t2
DUTY CYCLE, D = t1/t2
0.2
RESISTANCE (NORMALIZED)
Figure 4. Thermal Response
0.5 D = 0.5
0.05
0.3
0.7
0.07
0.03
0.02
0.1
0.02
0.01
0 (SINGLE PULSE)
10
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
0.01 30
2.0
5.0
0.1
BONDING WIRE LIMITED
THERMALLY LIMITED @
TC = 25
°
C (SINGLE PULSE)
SECOND BREAKDOWN LIMITED
CURVES APPLY BELOW
RATED VCEO
Figure 5. MJE171, MJE172
500
µ
s
5.0 ms
dc
1.0
2010 505.03.02.01.0 100
100
µ
s
TJ = 150
°
C
IC, COLLECTOR CURRENT (AMP)
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
0.01
Figure 6. MJE181, MJE182
IC, COLLECTOR CURRENT (AMP)
MJE171
MJE172
0.02
0.05
0.2
0.5
302010 505.03.02.01.0 100
10
2.0
5.0
0.1
1.0
0.02
0.05
0.2
0.5
70
100
µ
s
500
µ
s
5.0 ms dc
MJE181
MJE182
BONDING WIRE LIMITED
THERMALLY LIMITED @
TC = 25
°
C (SINGLE PULSE)
SECOND BREAKDOWN LIMITED
CURVES APPLY BELOW
RATED VCEO
TJ = 150
°
C
7.0
ACTIVE–REGION SAFE OPERATING AREA
There are two limitations on the power handling ability of a
transistor — average junction temperature and second
breakdown. Safe operating area curves indicate IC – VCE lim-
its of the transistor that must be observed for reliable opera-
tion; i.e., the transistor must not be subjected to greater
dissipation than the curves indicate.
The data of Figures 5 and 6 is based on TJ(pk) = 150
_
C; TC
is variable depending on conditions. Second breakdown
pulse limits are valid for duty cycles to 10% provided TJ(pk)
t
150
_
C. TJ(pk) may be calculated from the data in
Figure 4. At high case temperature, thermal limitations will
reduce the power that can be handled to values less than the
limitations imposed by second breakdown.
10K
IC, COLLECTOR CURRENT (AMPS)
10
5K
3K
2K
1K
500
300
200
100
50
Figure 7. Turn–Off Time
t, TIME (ns)
30
20
0.01 0.03 0.05 0.50.2
0.02 0.1 0.3 10521 3
VCC = 30 V
IC/IB = 10
IB1 = IB2
TJ = 25
°
C
ts
tf
VR, REVERSE VOLTAGE (VOLTS)
10 50
70
100
30
Figure 8. Capacitance
50
20105.03.02.01.00.5
C, CAPACITANCE (pF)
0.7
TJ = 25
°
C
Cib
Cob
NPN MJE181/182
PNP MJE171/172
PNP MJE171/MJE172
NPN MJE181/MJE182
20
307.0