BUX41 Просмотр технического описания (PDF) - Motorola => Freescale
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BUX41 Datasheet PDF : 4 Pages
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100
10
1
1
10
100
VCE, COLLECTOR–EMITTER VOLTAGE (V)
Figure 2. Active Region Safe Operating Area
BUX41
There are two limitations on the power handling ability of a
transistor: average junction temperature and second break-
down. 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 dissipa-
tion than the curves indicate.
The data of Figure 2 is based on TC = 25_C, TJ(pk) is
variable depending on power level. Second breakdown
limitations do not derate the same as thermal limitations.
At high case temperatures, thermal limitations will reduce
the power that can handled to values less than the limitations
imposed by second breakdown.
2.0
IC/IB = 8
1.6
1.2
VBE
0.8
VCE
0.4
0
1
10
IC, COLLECTOR CURRENT (A)
Figure 3. “On” Voltages
50
40
30
20
10
0
100
VCE = 4
1
10
IC, COLLECTOR CURRENT (A)
Figure 4. DC Current Gain
3.0
2.0
tS
1.0
0.4
tF
0.3
0.2
ton
0
4
8
12
16
20
IC, COLLECTOR CURRENT (A)
Figure 5. Resistive Switching Performance
VCC
RC
IB2
IB1
RB
RC – RB: Non inductive resistances
5600 µF
VCC = 150 V
RC = 18.5 Ω
RB = 6.8 Ω
IC/IB = 8
IB1 = IB2
Figure 6. Switching Times Test Circuit
Motorola Bipolar Power Transistor Device Data
3
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