Datasheet

3
Motorola Bipolar Power Transistor Device Data
t, TIME (ms)
1.0
0.01
0.01
0.1
r(t), TRANSIENT THERMAL RESISTANCE (NORMALIZED)
1.0 1.0 100
Z
θ JC(t)
= r(t) R
θ JC
R
θ JC
= 3.125
° C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t
1
T
J(pk)
– T
C
= P
(pk)
Z
θ JC(t)
P
(pk)
t
1
t
2
SINGLE PULSE
1.0 k
D = 0.5
0.2
0.05
DUTY CYCLE, D = t
1
/t
2
Figure 4. Thermal Response
0.1
0.05
0.02
0.01
0.03
0.02
0.07
0.5
0.3
0.2
0.7
0.02 0.05 0.2 0.5 2.0 5.0 200 50010 20 50
V
CE
, COLLECTOR–EMITTER VOLTAGE (VOLTS)
10 205.0 50 500
Figure 5. Active Region Safe Operating Area
0.02
0.05
SECONDARY BREAKDOWN LIMITED
THERMALLY LIMITED @ 25
° C
BONDING WIRE LIMITED
1.0 ms
dc
100 µ s
0.2
0.1
5.0
2.0
I
C
, COLLECTOR CURRENT (AMPS)
CURVES APPLY
BELOW RATED V
CEO
1.0
0.5
100 200
500 µ s
T
C
≤ 25 ° C
TIP47
TIP48
TIP49
TIP50
There are two limitations on the power handling ability of a
transistor: average junction temperature and second break-
down. 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 dissipa-
tion than the curves indicate.
The data of Figure 5 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. T
J(pk)
may be calculated from the data in
Figure 4. At high case temperatures, thermal limitations will
reduce the power that can be handled to values less than the
limitations imposed by second breakdown.
0.05 0.1 0.20.02 0.5
I
C
, COLLECTOR CURRENT (AMPS)
Figure 6. Turn–Off Time
5.0
t, TIME ( s)
µ
2.0
1.0
0.5
0.2
0.1
0.05
1.0 2.0
t
s
T
J
= 25 ° C
V
CC
= 200 V
I
C
/I
B
= 5.0
t
f
I
C
, COLLECTOR CURRENT (AMPS)
+ 4.5
V
, TEMPERATURE COEFFICIENTS (mV/ C)
°θ
+ 3.5
+ 2.5
+ 1.5
0
–0.5
–1.5
–2.5
*APPLIES FOR I
C
/I
B
≤ h
FE
/5
θ
VC
FOR V
CE(sat)
θ
VB
FOR V
BE
Figure 7. Temperature Coefficients
0.02 0.05 0.1 0.2 0.5 1.0 2.0
+ 25 ° C to +150 ° C
–55 ° C to +25 ° C
+ 25 ° C to +150 ° C
–55 ° C to +25 ° C
+ 0.5