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MJD18002D2T4 Datasheet(PDF) 9 Page - ON Semiconductor |
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MJD18002D2T4 Datasheet(HTML) 9 Page - ON Semiconductor |
9 / 11 page MJD18002D2 http://onsemi.com 9 10 ms Figure 26. tfr Measurement Figure 27. Forward Bias Safe Operating Area VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) 100 10 0.01 Figure 28. Reverse Bias Safe Operating Area VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) 2 0 1200 200 0 Figure 29. Forward Bias Power Derating TC, CASE TEMPERATURE (°C) 40 20 0 0.1 10 160 0.2 0.4 0.6 1 0.5 1 1 2.5 400 800 1000 0.8 60 100 80 120 140 1000 600 1.5 10% IF VFRM 0.1 VF tfr VFR (1.1 VF) Unless Otherwise Specified Second Breakdown Derating Thermal Derating DC 50 ms 1 ms 5 ms 1 ms TC = 125°C Gain = 4 LC = 500 mH VBE = 0 V VBE(off) = −1.5 V VBE(off) = −5 V 02 4 6 8 10 12 8 6 4 10 2 0 VF 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 27 is based on TC = 25°C; TJ(pk) is variable depending on power level. Second breakdown pulse limits are valid for duty cycles to 10% but must be derated when TC > 25°C. Second Breakdown limitations do not derate the same as thermal limitations. Allowable current at the voltages shown on Figure 27 may be found at any case temperature by using the appropriate curve on Figure 29. TJ(pk) may be calculated from the data in Figure 30. At any case temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by second breakdown. For inductive loads, high voltage and current must be sustained simultaneously during turn−off with the base to emitter junction reverse biased. The safe level is specified as a reverse biased safe operating area (Figure 28). This rating is verified under clamped conditions so that the device is never subjected to an avalanche mode. |
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