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MJD243 Datasheet(PDF) 3 Page - ON Semiconductor |
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MJD243 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 8 page MJD243 (NPN), MJD253 (PNP) http://onsemi.com 3 25 25 T, TEMPERATURE ( °C) 0 50 75 100 125 150 15 10 TC 5 20 2.5 0 1.5 1 TA 0.5 2 TC TA (SURFACE MOUNT) Figure 1. Power Derating Figure 2. Active Region Maximum Safe Operating Area 10 VCE, COLLECTOR-EMITTER VOLTAGE (VOLTS) 0.01 100 2 5 0.1 BONDING WIRE LIMITED THERMALLY LIMITED @ TC = 25°C (SINGLE PULSE) SECOND BREAKDOWN LIMITED CURVES APPLY BELOW RATED VCEO 500 ms dc 1 1ms 50 20 10 5 2 1 100 ms 0.02 0.05 0.2 0.5 5ms 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 2 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 3. At high case temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by second breakdown. t, TIME (ms) 0.01 0.02 0.05 1 2 5 10 20 50 100 200 0.1 0.5 0.2 1 0.2 0.1 0.05 RqJC(t) = r(t) qJC RqJC = 10°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 0.2 0.5 D = 0.5 0.05 0.3 0.7 0.07 0.03 0.02 0 (SINGLE PULSE) Figure 3. Thermal Response 0.1 0.02 0.01 |
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