D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t
T
- TC = P
J(pk)
1
(pk) θJC(t)
PNP
NPN
td @ V
BE(off)
0.71
P
(pk)
DUTY CYCLE, D = t1/t
t
f
= 0 V
t
1
t
r
10752
t
2
2
1000
20
15
10
5
3
2
1
0.5
0.3
0.2
0.1
, COLLECTOR CURRENT (AMP)
C
I
0.05
0.03
0.02
500µ
s
T
= 150°C
J
1ms
5ms
BONDING WIRE LIMIT
THERMAL LIMIT
T
= 25°C (SINGLE PULSE)
C
SECOND BREAKDOWN LIMIT
CURVES APPLY BELOW RATED V
5
321
, COLLECTOR-EMITTER VOLTAGE (VOLTS)
V
CE
CEO
10507
Figure 12. Maximum Forward Bias
Safe Operating rea
Figure 11. Thermal Response
100µ
s
a transistor: average junction temperature and second
breakdown. Safe operating area curves indicate I
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.
variable depending on conditions. Second breakdown pulse
dc
limits are valid for duty cycles to 10% provided T
< 150C. T
Figure 11. At high case temperatures, thermal limitations
will reduce the power that can be handled to values less than
302070
100
http://onsemi.com
the limitations imposed by second breakdown.
5
There are two limitations on the power handling ability of
– V
C
CE
The data of Figure 12 is based on T
may be calculated from the data in
J(pk)
= 150C; TC is
J(pk)
J(pk)
Page 6
MJD122 MJD127
PNP
BASE
COLLECTOR
≈ 8 k≈ 120
EMITTER
Figure 13. Darlington Schematic
NPN
BASE
COLLECTOR
≈ 8 k≈ 120
EMITTER
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6
Page 7
MJD122 MJD127
PACKAGE DIMENSIONS
DP AK
CASE 369A–13
ISSUE AA
NOTES:
SEATING
–T–
PLANE
B
V
S
R
4
A
123
K
F
L
D
2 PL
G
0.13 (0.005)T
C
E
Z
U
J
H
M
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
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MJD122/D
8
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