LESHAN RADIO COMPANY, LTD.
LMBT3904LT1
500
300
200
100
70
50
500
I
C
/I
B
= 10
300
200
100
70
50
30
20
V
CC
= 40 V
I
C
/I
B
= 10
t
r
@ V
CC
= 3.0 V
30
20
40 V
15 V
10
7
5
1.0
2.0 3.0
5.0 7.0 10
t
r
, RISE TIME (ns)
TIME (ns)
t
d
@ V
OB
= 0 V
20
30
2.0 V
50 70 100
200
10
7
5
1.0
2.0 3.0
5.0 7.0 10
20
30
50 70 100
200
I
C
, COLLECTOR CURRENT (mA)
I
C
, COLLECTOR CURRENT (mA)
Figure 5. Turn–On Time
500
300
200
500
Figure 6. Rise Time
t ’
s
= t
s
–1 /8 t
f
I
C
/I
B
=20
I
C
/I
B
=10
I
B1
= I
B2
300
200
V
CC
= 40 V
I
B1
= I
B2
I
C
/I
B
= 20
t ’
s
, STORAGE TIME (ns)
100
100
50
30
20
I
C
/I
B
=20
I
C
/I
B
=10
t
f
, , FALL TIME (ns)
70
70
50
30
20
I
C
/I
B
= 10
10
7
5
1.0
2.0 3.0
5.0 7.0 10
20
30
50 70 100
200
10
7
5
1.0
2.0 3.0
5.0 7.0 10
20
30
50
70 100
200
I
C
, COLLECTOR CURRENT (mA)
I
C
, COLLECTOR CURRENT (mA)
Figure 7. Storage Time
Figure 8. Fall Time
TYPICAL AUDIO SMALL–SIGNAL CHARACTERISTICS
NOISE FIGURE VARIATIONS
(V
CE
= 5.0 Vdc, T
A
= 25°C, Bandwidth = 1.0 Hz)
12
14
SOURCE RESISTANCE=200Ω
10
f = 1.0 kHz
12
I
C
= 1.0 mA
I
C
= 1.0 mA
SOURCE RESISTANCE =200Ω
I
C
= 0.5 mA
NF, NOISE FIGURE (dB)
8
NF, NOISE FIGURE (dB)
10
8
6
4
2
0
0.1
0.2
I
C
= 0.5 mA
I
C
= 50
µA
I
C
= 100
µA
6
SOURCE RESISTANCE =1.0k
I
C
= 50µA
4
2
SOURCE RESISTANCE=500Ω
I
C
= 100
µA
0
0.1
0.2
0.4
1.0
2.0
4.0
10
20
40
100
0.4
1.0
2.0
4.0
10
20
40
100
f, FREQUENCY (kHz)
R
S
, SOURCE RESISTANCE (kΩ)
Figure 9.
Figure 10.
LMBT3904LT1-4/7
LRC [ LESHAN RADIO COMPANY ]
