MJE371 データシートの表示（PDF） - Motorola => Freescale
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MJE371 Datasheet PDF : 4 Pages
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MJE371
10
5.0
1.0 ms
3.0
2.0
1.0
TJ = 150°C
5.0 ms
dc
0.5
BONDING WIRE LIMIT
0.3
SECOND BREAKDOWN LIMIT
0.2
THERMAL LIMIT @ TC = 25°C
100 µs
0.1
2.0
4.0 6.0 8.0 10
20
40 60
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
Figure 1. Active–Region Safe Operating Area
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 1 is based on TJ(pk) = 150_C; TC is vari-
v able depending on conditions. Second breakdown pulse lim-
its are valid for duty cycles to 10% provided TJ(pk) 150_C.
At high case temperatures, thermal limitations will reduce the
power that can be handled to values less then the limitations
imposed by second breakdown.
10
7.0
5.0
150°C
TJ = 25°C
3.0
2.0
– 55°C
1.0
0.7
0.5
0.3
0.2
VCE = 1.0 Vdc
0.1
0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5 1.0
IC, COLLECTOR CURRENT (AMP)
Figure 2. DC Current Gain
2.0 3.0 4.0
2.0
1.6
TJ = 25°C
1.2
0.8
VBE(sat) @ IC/IB = 10
VBE(on) @ VCE = 1.0 V
0.4
VCE(sat) @ IC/IB = 10
0
0.005 0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5 1.0
IC, COLLECTOR CURRENT (AMP)
2.0 3.0 4.0
Figure 3. “On” Voltage
1.0
0.7 D = 0.5
0.5
0.3 0.2
0.2
0.1
0.1 0.05
0.07 0.02
0.05
0.03
0.01
0.02
SINGLE PULSE
0.01
0.01 0.02 0.03 0.05 0.1
θJC(t) = r(t) θJC
θJC = 3.12°C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk) θJC(t)
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
0.2 0.3 0.5 1.0 2.0 3.0 5.0 10
20
t, TIME OR PULSE WIDTH (ms)
Figure 4. Thermal Response
50 100 200
500 1000
2
Motorola Bipolar Power Transistor Device Data
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