MBT3904DW1T1, MBT3906DW1T1, MBT3946DW1T1
MBT3906DW1T1 (PNP)
TYPICAL AUDIO SMALL–SIGNAL CHARACTERISTICS
NOISE FIGURE VARIATIONS
(V = –5.0 Vdc, T = 25°C, Bandwidth = 1.0 Hz)
5.0
12
NF, NOISE FIGURE (dB)
NF, NOISE FIGURE (dB)
0.2
0.4
1.0
2.0
4.0
10
20
40
100
4.0
10
8
3.0
6
2.0
4
1.0
2
0
0.1
0
0.1
0.2
0.4
1.0
2.0
4.0
10
20
40
100
f,FREQUENCY (kHz)
R
S
, SOURCE RESISTANCE (kΩ)
Figure 25. Noise Figure
Figure 26. Noise Figure
h PARAMETERS
(V
CE
= –10 Vdc, f = 1.0 kHz, T
A
= 25°C)
h
oe
, OUTPUT ADMITTANCE (
µmhos)
0.1
0.2
0.3
0.5
1.0
2.0
3.0
5.0
10
300
100
50
h
fe
, CURRENT GAIN
200
20
10
5
100
70
50
2
1
0.1
0.2
0.3
0.5
1.0
2.0
3.0
5.0
10
30
I
C
, COLLECTOR CURRENT (mA)
I
C
, COLLECTOR CURRENT (mA)
Figure 27. Current Gain
h
ie
, INPUT IMPEDANCE (k OHMS)
20
10
Figure 28. Output Admittance
, VOLTAGE FEEDBACK RATIO (x 10
–4
)
re
1.0
7.0
5.0
5.0
3.0
2.0
2.0
1.0
0.5
1.0
0.7
0.5
0.1
0.2
0.3
0.5
1.0
2.0
3.0
5.0
10
0.2
0.1
0.2
0.3
0.5
1.0
2.0
3.0
5.0
10
I
C
, COLLECTOR CURRENT (mA)
h
I
C
, COLLECTOR CURRENT (mA)
Figure 29. Input Impedance
Figure 30. Voltage Feedback Ratio
MBT3904–9/12
ETL [ E-TECH ELECTRONICS LTD ]
