2N3442 Ver la hoja de datos (PDF) - Motorola => Freescale
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2N3442 Datasheet PDF : 4 Pages
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ACTIVE REGION SAFE OPERATING AREA INFORMATION
2N3442
20
10 µs
10
7.0
dc
5.0
3.0
30 µs
2.0
50 µs
TJ = 200°C
1.0
100 µs
1.0 ms
0.7
CURRENT LIMIT
100 ms
0.5
THERMAL LIMIT @ TC = 25°C
SINGLE PULSE
0.3
SECOND BREAKDOWN LIMIT
0.2
2.0 3.0 5.0 7.0 10
20 30 50 70 100 200
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
Figure 2. 2N3442
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
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 2 is based on TJ(pk) = 200_C; TC is
variable depending on conditions. At high case temper-
atures, thermal limitations will reduce the power that can be
handled to values less than the limitations imposed by
second breakdown.
400
200
100
60
40
20
10
6.0
4.0
0.1
TJ = 150°C
– 55°C
25°C
VCE = 4.0 V
0.2 0.3 0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (AMP)
Figure 3. DC Current Gain
5.0 7.0 10
1.4
1.2 IC = 1.0 A
2.0 A
1.0
0.8
4.0 A
8.0 A
0.6
0.4
0.2
0
2.0
TJ = 25°C
5.0 10
20
50 100 200
IB, BASE CURRENT (mA)
500 1.0 k 2.0 k
Figure 4. Collector–Saturation Region
Motorola Bipolar Power Transistor Device Data
3
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