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ONSEMI |
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2N4401 http://onsemi.com 4 Figure 7. Storage Time IC, COLLECTOR CURRENT (mA) Figure 8. Fall Time IC, COLLECTOR CURRENT (mA) 20 30 50 70 100 10 5.0 7.0 10 20 50 70 100 200 300 500 30 100 200 30 70 50 300 10 20 50 70 100 200 300 500 30 ts′ = ts − 1/8 tf IB1 = IB2 IC/IB = 10 to 20 VCC = 30 V IB1 = IB2 IC/IB = 20 IC/IB = 10 6.0 8.0 10 0 4.0 2.0 0.1 2.0 5.0 10 20 50 1.0 0.5 0.2 0.01 0.02 0.05 100 Figure 9. Frequency Effects f, FREQUENCY (kHz) SMALL−SIGNAL CHARACTERISTICS NOISE FIGURE VCE = 10 Vdc, TA = 25°C; Bandwidth = 1.0 Hz IC = 1.0 mA, RS = 150 W IC = 500 mA, RS = 200 W IC = 100 mA, RS = 2.0 kW IC = 50 mA, RS = 4.0 kW RS = OPTIMUM RS = SOURCE RS = RESISTANCE 100k 50 100 200 500 1.0k 2.0k 5.0k 10k 20k 50k 6.0 8.0 10 0 4.0 2.0 Figure 10. Source Resistance Effects RS, SOURCE RESISTANCE (OHMS) f = 1.0 kHz IC = 50 mA IC = 100 mA IC = 500 mA IC = 1.0 mA |
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