BD238 Просмотр технического описания (PDF) - ON Semiconductor
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BD238 Datasheet PDF : 4 Pages
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BD237 (NPN), BD234 (PNP), BD238 (PNP)
1000
700
500
300
200
100
TJ = + 150°C
70
50
TJ = + 25°C
30
TJ = − 55°C
20
VCE = 2.0 V
10
2.0 3.0 5.0
10 20 30 50 100 200 300 500 1000 2000
IC, COLLECTOR CURRENT (mA)
Figure 3. Current Gain
1.5
1.2 TJ = 25°C
0.9
VBE(sat) @ IC/IB = 10
0.6
VBE @ VCE = 2.0 V
0.3
VCE(sat) @ IC/IB = 10
0
2.0 3.0 5.0 10 20 30 50 100 200 300 500 1000 2000
IC, COLLECTOR CURRENT (mA)
Figure 4. “On” Voltages
1.0
0.7 D = 0.5
0.5
0.3 D = 0.2
0.2
D = 0.1
0.1 D = 0.05
0.07 D = 0.01
0.05
0.03
0.02
0.01
0.01 0.02 0.03 0.05 0.1
SINGLE PULSE
qJC(t) = r(t) qJC
P(pk)
qJC = 4.16°C/W MAX
qJC = 3.5°C/W TYP
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) − TC = P(pk) qJC(t)
t1
t2
DUTY CYCLE, D = t1/t2
0.2 0.3 0.5
1.0 2.0 3.0 5.0 10
t, TIME or PULSE WIDTH (ms)
20 30 50
Figure 5. Thermal Response
100 200 300 500 1000
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