BF420 Motorola Inc, BF420 Datasheet - Page 3

• Manufacturer Part Number: BF420
• Description: High Voltage Transistors(NPN)
• Manufacturer: Motorola Inc

Motorola Small–Signal Transistors, FETs and Diodes Device Data
100
5.0
2.0
1.0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
20
50
10
0
0.2
1.0
200
100
50
30
20
1.0
0.5
2.0
V CE = 10 Vdc
V CE(sat) @ I C /I B = 10
1.0
3.0
V BE(sat) @ I C /I B = 10
V R , REVERSE VOLTAGE (VOLTS)
Figure 4. “On” Voltages
Figure 2. Capacitances
I C , COLLECTOR CURRENT (mA)
C eb
T J = 25 C
2.0
5.0
V BE(on) @ V CE = 10 V
T J = +125 C
2.0
7.0
5.0
25 C
–55 C
10
10
3.0
C cb
20
20
30
50
5.0
50
100 200
Figure 1. DC Current Gain
70
I C , COLLECTOR CURRENT (mA)
7.0
100
10
500
100
200
100
5.0
2.0
1.0
0.5
70
50
30
20
10
50
20
10
1.0
0.5
Figure 3. Current–Gain — Bandwidth Product
T A = 25 C
1.0
CURVES APPLY
BELOW RATED V CEO
2.0
V CE , COLLECTOR–EMITTER VOLTAGE (VOLTS)
T C = 25 C
Figure 5. Maximum Forward Bias
2.0
20
3.0
CURRENT LIMIT
THERMAL LIMIT
(PULSE CURVES @ T C = 25 C)
SECOND BREAKDOWN LIMIT
I C , COLLECTOR CURRENT (mA)
100 ms
Safe Operating Area
5.0
5.0
30
7.0
10
10
20
T J = 25 C
V CE = 20 V
f = 20 MHz
20
100 s
50
MPSA43
MPSA42
50
BF420 BF422
30
100
1.0 ms
70
50
200
10 s
70
3
100
100
500