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NJVMJD350T4G Datasheet(PDF) 4 Page - ON Semiconductor |
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NJVMJD350T4G Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 6 page MJD340 (NPN), MJD350 (PNP) www.onsemi.com 4 t, TIME (ms) 1 0.01 0.01 0.5 0.2 0.1 0.05 0.02 0.05 1 2 5 10 20 50 100 200 1 k 500 RqJC(t) = r(t) RqJC RqJC = 8.33°C/W MAX D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 TJ(pk) - TC = P(pk) qJC(t) P(pk) t1 t2 DUTY CYCLE, D = t1/t2 D = 0.5 0.2 0.05 SINGLE PULSE 0.1 0.7 0.3 0.07 0.03 0.02 0.1 0.5 0.2 Figure 5. Thermal Response 0.03 0.3 3 30 300 0.01 1000 10 VCE, COLLECTOR-EMITTER VOLTAGE (VOLTS) 1 20 30 50 70 100 200 500 300 500 ms Figure 6. Active Region Safe Operating Area 200 300 500 700 1000 100 20 50 30 10 2 5 3 1 ms dc 100 ms There are two limitations on the power handling ability of a transistor: average junction temperature and second breakdown. 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 dissipation than the curves indicate. The data of Figure 6 is based on TJ(pk) = 150 _C; TC is variable depending on conditions. Second breakdown pulse limits are valid for duty cycles to 10% provided TJ(pk) ≤ 150_C. TJ(pk) may be calculated from the data in Figure 5. At high case temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by second breakdown. Figure 7. Power Derating 25 25 T, TEMPERATURE ( °C) 0 50 75 100 125 150 20 15 10 5 2.5 0 2 1.5 1 0.5 TA TC TC TA |
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