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BC490 Datasheet(PDF) 3 Page - Motorola, Inc |
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BC490 Datasheet(HTML) 3 Page - Motorola, Inc |
3 / 6 page BC490,A 3 Motorola Small–Signal Transistors, FETs and Diodes Device Data Figure 2. Current–Gain — Bandwidth Product IC, COLLECTOR CURRENT (mA) –200 –70 –50 –30 –20 –10 –7.0 –5.0 –3.0 –2.0 200 100 70 50 20 VCE = –2.0 V TJ = 25°C Figure 3. Capacitance VR, REVERSE VOLTAGE (VOLTS) –100 –50 –20 –10 –5.0 –2.0 –1.0 –0.5 –0.2 –0.1 100 70 50 30 20 5.0 TJ = 25°C Cobo Cibo 10 Figure 4. Switching Time IC, COLLECTOR CURRENT (mA) –500 –50 –30 –20 –10 –7.0 –5.0 1.0 k VCC = –40 V IC/IB = 10 IB1 = IB2 TJ = 25°C 700 500 300 200 100 70 50 30 20 10 ts tf tr td @ VBE(off) = –0.5 V –100 7.0 –200 –100 –70 –300 30 Figure 5. Thermal Response t, TIME (ms) 1.0 0.01 0.02 0.03 0.05 0.07 0.1 0.2 0.3 0.5 0.7 1.0 2.0 5.0 10 20 50 100 200 500 1.0 k 2.0 k 5.0 k 10 k 20 k 50 k 100 k D = 0.5 0.2 0.1 0.02 0.01 SINGLE PULSE DUTY CYCLE, D = t1/t2 D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 (SEE AN–469) TJ(pk) – TC = P(pk) Z θJC(t) TJ(pk) – TA = P(pk) Z θJA(t) t1 t2 P(pk) Z θJC(t) = r(t) • RθJC Z θJA(t) = r(t) • RθJA SINGLE PULSE |
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