BF421 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
MFG CO.
BF421 Datasheet PDF : 4 Pages
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300
250
200
150
100
50
0
0.1
TJ = +125°C
25°C
–55°C
1.0
10
IC, COLLECTOR CURRENT (mA)
Figure 1. DC Current Gain
BF421 BF423
VCE = 10 Vdc
100
100
Cib @ 1MHz
10
Ccb @ 1MHz
1.0
0.1
0.1
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.1
1.0
10
100
VR, REVERSE VOLTAGE (VOLTS)
Figure 2. Capacitance
1.0
10
IC, COLLECTOR CURRENT (mA)
Figure 4. ”ON” Voltages
150
130
110
90
70
50
TJ = 25°C
VCE = 20 Vdc
30
F = 20 MHz
10
1000
1 3 5 7 9 11 13 15 17 19 21
IC, COLLECTOR CURRENT (mA)
Figure 3. Current–Gain — Bandwidth
VCE(sat) @ 25°C, IC/IB = 10
VCE(sat) @ 125°C, IC/IB = 10
VCE(sat) @ –55°C, IC/IB = 10
VBE(sat) @ 25°C, IC/IB = 10
VBE(sat) @ 125°C, IC/IB = 10
VBE(sat) @ –55°C, IC/IB = 10
VBE(on) @ 25°C, VCE = 10 V
VBE(on) @ 125°C, VCE = 10 V
VBE(on) @ –55°C, VCE = 10 V
100
Motorola Small–Signal Transistors, FETs and Diodes Device Data
3
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