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BD237 Datasheet(PDF) 2 Page - Motorola, Inc

Part No. BD237
Description  Plastic Medium Power Silicon NPN Transistor
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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BD237 Datasheet(HTML) 2 Page - Motorola, Inc

   
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BD237
2
Motorola Bipolar Power Transistor Device Data
Figure 1. Active Region Safe Operating Area
10
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
3
1
0.1
3
10
30
100
0.3
TJ = 150°C
dc
5 ms
1
100
µs
1 ms
BD237
BD236
The Safe Operating Area Curves indicate IC – VCE limits
below which the device will not enter secondary breakdown.
Collector load lines for specific circuits must fall within the ap-
plicable Safe Area to avoid causing a catastrophic failure. To
insure operation below the maximum TJ, power–temperature
derating must be observed for both steady state and pulse
power conditions.
Figure 2. Collector Saturation Region
IB, BASE CURRENT (mA)
1.0
0
0.2
0.8
0.6
0.4
0.2
1.0
2.0
10
30
50
200
IC = 0.1 A
0.25 A
1.0 A
0.5 A
0.3
0.5
100
20
3.0
5.0
TJ = 25°C
1000
Figure 3. Current Gain
IC, COLLECTOR CURRENT (mA)
10
100
TJ = + 150°C
TJ = + 55°C
VCE = 2.0 V
700
500
300
200
70
50
30
20
TJ = + 25°C
3.0 5.0
10
20 30
50
2000
2.0
100
200
1000
300 500
Figure 4. “On” Voltages
0
1.5
3.0 5.0
10
20 30
50
2000
2.0
100
200
1000
300 500
1.2
0.9
0.6
0.3
IC, COLLECTOR CURRENT (mA)
TJ = 25°C
VBE(sat) @ IC/IB = 10
VCE(sat) @ IC/IB = 10
VBE @ VCE = 2.0 V
Figure 5. Thermal Response
t, TIME or PULSE WIDTH (ms)
1.0
0.01
0.01
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.02 0.03
0.05
0.1
0.2 0.3
0.5
1.0
2.0 3.0
5.0
10
20
30
50
100
200 300
1000
500
θJC(t) = r(t) θJC
θJC = 4.16°C/W MAX
θJC = 3.5°C/W TYP
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
D = 0.5
SINGLE PULSE
D = 0.2
D = 0.1
D = 0.05
D = 0.01


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