BC857ATT1 查看數據表（PDF） - Willas Electronic Corp.
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BC857ATT1 Datasheet PDF : 8 Pages
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10
Cib
7.0
TA = 25°C
5.0
3.0
Cob
2.0
1.0
−0.4 −0.6
−1.0 −2.0 −4.0 −6.0 −10
VR, REVERSE VOLTAGE (VOLTS)
Figure 5. Capacitances
−20 −30 −40
400
300
200
150
VCE = −10 V
TA = 25°C
100
80
60
40
30
20
−0.5
−1.0 −2.0 −3.0 −5.0
−10 −20 −30 −50
IC, COLLECTOR CURRENT (mAdc)
Figure 6. Current−Gain − Bandwidth Product
1.0
D = 0.5
0.2
0.1
0.1
0.05
0.02
0.01 0.01
SINGLE PULSE
0.001
0.00001
0.0001
0.001
0.01
0.1
1.0
10
100
1000
t, TIME (s)
Figure 7. Thermal Response
−200
1s
3 ms
−100
−50
TA = 25°C TJ = 25°C
BC558
−10
BC557
BC556
−5.0
−2.0
−1.0
BONDING WIRE LIMIT
THERMAL LIMIT
SECOND BREAKDOWN LIMIT
−5.0 −10
−30 −45 −65 −100
VCE, COLLECTOR−EMITTER VOLTAGE (V)
Figure 8. Active Region Safe Operating Area
The safe operating area curves indicate IC−VCE limits
of the transistor that must be observed for reliable opera-
tion. Collector load lines for specific circuits must fall be-
low the limits indicated by the applicable curve.
The data of Figure 8 is based upon TJ(pk) = 150°C; TC or
TA is variable depending upon conditions. Pulse curves are
valid for duty cycles to 10% provided TJ(pk) ≤ 150°C. TJ(pk)
may be calculated from the data in Figure 7. At high case
or ambient temperatures, thermal limitations will reduce
the power that can be handled to values less than the limita-
tions imposed by the secondary breakdown.
2015.02
www.willas.com.tw
Rev.L0ϭ
P4
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