NPN MMBT3904WT1 PNP MMBT3906WT1
MMBT3906WT1
TYPICAL AUDIO SMALL– SIGNAL CHARACTERISTICS
NOISE FIGURE VARIATIONS
(VCE = –5.0 Vdc, TA = 25°C, Bandwidth = 1.0 Hz)
5.0
4.0
NF, NOISE FIGURE (dB)
SOURCE RESISTANCE = 200
W
IC = 1.0 mA
NF, NOISE FIGURE (dB)
SOURCE RESISTANCE = 200
W
IC = 0.5 mA
SOURCE RESISTANCE = 2.0 k
IC = 50
m
A
2.0
12
f = 1.0 kHz
10
IC = 0.5 mA
8.0
6.0
4.0
2.0
MMBT3906WT1
20
40
100
0
0.1
0.2
0.4
IC = 50
m
A
IC = 100
m
A
MMBT3906WT1
1.0 2.0
4.0
10
20
RS, SOURCE RESISTANCE (kΩ)
40
100
IC = 1.0 mA
3.0
1.0
SOURCE RESISTANCE = 2.0 k
IC = 100
m
A
0.2
0.4
1.0 2.0 4.0
10
f, FREQUENCY (kHz)
0
0.1
Figure 25.
Figure 26.
h PARAMETERS
(VCE = –10 Vdc, f = 1.0 kHz, TA = 25°C)
300
MMBT3906WT1
200
hfe , CURRENT GAIN
hoe, OUTPUT ADMITTANCE (
m
mhos)
100
70
50
30
20
MMBT3906WT1
100
70
50
10
7.0
5.0
0.1
0.2
0.5 0.7 1.0
2.0 3.0
0.3
IC, COLLECTOR CURRENT (mA)
5.0 7.0
10
30
0.1
0.2
0.5 0.7 1.0
2.0 3.0
0.3
IC, COLLECTOR CURRENT (mA)
5.0 7.0 10
Figure 27. Current Gain
20
h re , VOLTAGE FEEDBACK RATIO (X 10
–4
)
MMBT3906WT1
10
h ie , INPUT IMPEDANCE (k
Ω)
7.0
5.0
3.0
2.0
1.0
0.7
0.5
0.3
0.2
10
7.0
5.0
3.0
2.0
Figure 28. Output Admittance
MMBT3906WT1
1.0
0.7
0.5
0.1
0.2
0.3
0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (mA)
5.0 7.0
10
0.1
0.2 0.3
0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (mA)
5.0 7.0
10
Figure 29. Input Impedance
8
Figure 30. Voltage Feedback Ratio
Motorola Small–Signal Transistors, FETs and Diodes Device Data
ONSEMI [ ON SEMICONDUCTOR ]
