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BC847BS-AU_F2_1001 Datasheet(PDF) 4 Page - Pan Jit International Inc. |
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BC847BS-AU_F2_1001 Datasheet(HTML) 4 Page - Pan Jit International Inc. |
4 / 7 page PAGE . 4 April 3,2013-REV.04 BC847BS-AU ELECTRICAL CHARACTERISTICS CURVE SINGEL PULSE DUTY CYCLE, D-t1/t2 Figure 7. Thermal Response t, TIME(ms) 1.0M 100K 10K 1.0K 100 10 1.0 0 0.001 0.01 0.1 1.0 Z (t)=r(t) R R =328 C/W MAX D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t T -TC=P R (t) qq q q JA JA JA 1 J(pk) (pk) JC O t1 t2 P(pk) D-0.5 0.1 0.2 0.05 0.02 0.01 BONDING WIRE LIMIT THERMAL LIMIT SECOND BREAKDOWN LIMIT V , COLLECTOR-EMITTER VOLTAGE(V) CE -1.0 -2.0 -5.0 -5.0 -10 -10 -50 -30 -45 -65 -100 -100 -200 Figure 8. Active Region Safe Operating Area T=25 C A O BC558 BC557 BC556 T=25 C J O 3ms 1s The safe operating area curves indicate Ic-Vce limits of the transistor that must be observed for reliable operation. Collector load lines for specific circuits must fall below the limits indicated by the applicable curve. The data of Figure 26 is based upon Tj(pk)=150 C; Tc or Ta is variable depending upon conditions. Pulse curves are valid for duty cycles to 10% prodided Tj(pk) < 150 C. Tj(pk) may be calculated from the data in Figure 25. At high case or ambient temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by the secondary break-down. O O |
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