MBT3946DW1T1G, SMBT3946DW1T1G
http://onsemi.com
8
(PNP)
TYPICAL AUDIO SMALL-SIGNAL CHARACTERISTICS
NOISE FIGURE VARIATIONS
(V
CE
= −5.0 Vdc, T
A
= 25°C, Bandwidth = 1.0 Hz)
Figure 26.
f, FREQUENCY (kHz)
2.0
3.0
4.0
5.0
1.0
0.1
Figure 27.
R
g
, SOURCE RESISTANCE (k OHMS)
0
NF, NOISE FIGURE (dB)
1.0 2.0 4.0 10 20
40
0.2 0.4
0
100
4
6
8
10
12
2
0.1 1.0 2.0 4.0 10 20
40
0.2 0.4
100
NF, NOISE FIGURE (dB)
f = 1.0 kHz
I
C
= 1.0 mA
I
C
= 0.5 mA
I
C
= 50 mA
I
C
= 100 mA
SOURCE RESISTANCE = 200 W
I
C
= 1.0 mA
SOURCE RESISTANCE = 200 W
I
C
= 0.5 mA
SOURCE RESISTANCE = 2.0 k
I
C
= 100 mA
SOURCE RESISTANCE = 2.0 k
I
C
= 50 mA
(PNP)
(PNP)
h PARAMETERS
(V
CE
= −10 Vdc, f = 1.0 kHz, T
A
= 25°C)
Figure 28. Current Gain
I
C
, COLLECTOR CURRENT (mA)
70
100
200
300
50
Figure 29. Output Admittance
I
C
, COLLECTOR CURRENT (mA)
h , DC CURRENT GAIN
h , OUTPUT ADMITTANCE ( mhos)
Figure 30. Input Impedance
I
C
, COLLECTOR CURRENT (mA)
Figure 31. Voltage Feedback Ratio
I
C
, COLLECTOR CURRENT (mA)
30
100
50
10
20
2.0
3.0
5.0
7.0
10
1.0
0.1 0.2 1.0 2.0
5.0
0.5
10
0.3 0.5 3.0
0.7
2.0
5.0
10
20
1.0
0.2
0.5
oe
h , INPUT IMPEDANCE (k OHMS)
ie
0.1 0.2 1.0 2.0
5.0 10
0.3 0.5 3.0
0.1 0.2 1.0 2.0
5.0 10
0.3 0.5 3.0
7
5
0.1 0.2 1.0 2.0
5.0 10
0.3 0.5 3.0
fe
m
70
30
0.7
7.0
0.7
7.0
7.0
3.0
0.7
0.3
0.7
7.0
0.7
7.0
h , VOLTAGE FEEDBACK RATIO (x 10 )
re
-4
(PNP)
(PNP)
(PNP)
(PNP)