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BD237 Datasheet(PDF) 2 Page - Motorola, Inc |
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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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