BC450 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
BC450 Datasheet PDF : 6 Pages
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300
TJ = 25°C
200
100
70
50
–5.0 V
VCE = –1.0 V
30
–1.0
–2.0 –3.0 –5.0 –7.0 –10
–20 –30 –50 –70 –100
IC, COLLECTOR CURRENT (mA)
Figure 2. Current–Gain — Bandwidth Product
BC450,A
40
TJ = 25°C
20
Cibo
10
8.0
6.0
4.0
Cobo
2.0
–0.1 –0.2
–0.5 –1.0 –2.0 –5.0 –10 –20
VR, REVERSE VOLTAGE (VOLTS)
Figure 3. Capacitance
–50 –100
1000
700
500
ts
300
200
VCC = –40 V
IC/IB = 10
IB1 = IB2
TJ = 25°C
100
tf
70
50
tr
30
20
td @ VBE(off) = –0.5 V
10
–10
–20 –30
–50 –70 –100
–200
IC, COLLECTOR CURRENT (mA)
Figure 4. Switching Times
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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