BC490 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
BC490 Datasheet PDF : 6 Pages
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200
VCE = –2.0 V
TJ = 25°C
100
70
50
30
20
–2.0 –3.0 –5.0 –7.0 –10
–20 –30 –50 –70 –100 –200
IC, COLLECTOR CURRENT (mA)
Figure 2. Current–Gain — Bandwidth Product
BC490,A
100
70
Cibo
TJ = 25°C
50
30
20
10
7.0
5.0
–0.1 –0.2
–0.5 –1.0 –2.0 –5.0 –10 –20
VR, REVERSE VOLTAGE (VOLTS)
Figure 3. Capacitance
Cobo
–50 –100
1.0 k
700
500
300
ts
200
100
70 td @ VBE(off) = –0.5 V
50
tf
30 VCC = –40 V
20
IC/IB = 10
IB1 = IB2
TJ = 25°C
10
–5.0 –7.0 –10 –20 –30
–50 –70 –100
tr
–200 –300 –500
IC, COLLECTOR CURRENT (mA)
Figure 4. Switching Time
1.0
0.7
D = 0.5
0.5
0.3
0.2
0.2
0.1
0.1
0.02
0.07
0.01
0.05 SINGLE PULSE
0.03
SINGLE PULSE
0.02
0.01
1.0 2.0
5.0 10 20
ZθJC(t) = r(t) • RθJC
ZθJA(t) = r(t) • RθJA
50 100 200
500 1.0 k 2.0 k
t, TIME (ms)
Figure 5. Thermal Response
P(pk)
t1
t2
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) ZθJC(t)
TJ(pk) – TA = P(pk) ZθJA(t)
5.0 k 10 k 20 k
50 k 100 k
Motorola Small–Signal Transistors, FETs and Diodes Device Data
3
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