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MMBT4401WT1G_13 Datasheet, PDF (4/7 Pages) ON Semiconductor – Switching Transistor | |||
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MMBT4401WT1G
SMALLâSIGNAL CHARACTERISTICS NOISE FIGURE
VCE = 10 Vdc, TA = 25°C; Bandwidth = 1.0 Hz
10
10
IC = 1.0 mA, RS = 150 W
f = 1.0 kHz
8.0
IC = 500 mA, RS = 200 W
IC = 100 mA, RS = 2.0 kW
RS = OPTIMUM
RS = SOURCE
8.0
IC = 50 mA, RS = 4.0 kW
RS = RESISTANCE
IC = 50 mA
IC = 100 mA
6.0
6.0
IC = 500 mA
IC = 1.0 mA
4.0
4.0
2.0
2.0
0
0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 20
f, FREQUENCY (kHz)
Figure 9. Frequency Effects
50 100
0
50 100 200 500 1.0âk 2.0âk 5.0âk 10âk 20âk 50âk 100âk
RS, SOURCE RESISTANCE (OHMS)
Figure 10. Source Resistance Effects
h PARAMETERS
VCE = 10 Vdc, f = 1.0 kHz, TA = 25°C
This group of graphs illustrates the relationship between hfe and other âhâ parameters for this series of transistors. To obtain
these curves, a highâgain and a lowâgain unit were selected from the MMBT4401WT1 lines, and the same units were used
to develop the correspondingly numbered curves on each graph.
300
50âk
MMBT4401LT1 UNIT 1
200
MMBT4401LT1 UNIT 2
20âk
10âk
100
70
MMBT4401LT1 UNIT 1
5.0âk
MMBT4401LT1 UNIT 2
50
2.0âk
30
1.0âk
20
0.1
10
7.0
5.0
3.0
2.0
0.2 0.3 0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (mA)
Figure 11. Current Gain
5.0 7.0 10
MMBT4401LT1 UNIT 1
MMBT4401LT1 UNIT 2
1.0
0.7
0.5
0.3
0.2
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 13. Voltage Feedback Ratio
500
0.1
100
50
0.2 0.3 0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (mA)
Figure 12. Input Impedance
5.0 7.0 10
20
10
5.0
2.0
1.0
0.1
MMBT4401LT1 UNIT 1
MMBT4401LT1 UNIT 2
0.2 0.3 0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (mA)
5.0 7.0 10
Figure 14. Output Admittance
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