MPS3638A Datasheet, PDF (5/8 Pages) Motorola, Inc – Switching Transistor

MPS3638A
SMALL–SIGNAL CHARACTERISTICS
NOISE FIGURE
VCE = –10 Vdc, TA = 25°C
Bandwidth = 1.0 Hz
10
10
f = 1 kHz
8
8
6
IC = 1.0 mA, RS = 430 Ω
IC = 500 µA, RS = 560 Ω
IC = 50 µA, RS = 2.7 kΩ
4
IC = 100 µA, RS = 1.6 kΩ
6
IC = 50 µA
100 µA
4
500 µA
1.0 mA
2
RS = OPTIMUM SOURCE RESISTANCE
2
0
0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0
f, FREQUENCY (kHz)
10 20
50 100
0
50 100 200
500 1 k 2 k
5 k 10 k 20 k 50 k
RS, SOURCE RESISTANCE (OHMS)
Figure 8. Frequency Effects
Figure 9. Source Resistance Effects
h PARAMETERS
VCE = –10 Vdc, f = 1.0 kHz, TA = 25°C
This group of graphs illustrates the relationship between
selected from the 2N4402 line, and the same units were
hfe and other “h” parameters for this series of transistors. To
obtain these curves, a high–gain and a low–gain unit were
used to develop the correspondingly–numbered curves on
each graph.
1000
100 k
700
50 k
500
20 k
2N4402 UNIT 1
2N4402 UNIT 2
300
10 k
200
5k
2k
100
2N4402 UNIT 1
1k
70
2N4402 UNIT 2
500
50
200
30
0.1
0.2 0.3 0.5 0.7 1.0
2.0 3.0 5.0 7.0 10
IC, COLLECTOR CURRENT (mAdc)
100
0.1
0.2 0.3 0.5 0.7 1.0
2.0 3.0 5.0 7.0 10
IC, COLLECTOR CURRENT (mAdc)
Figure 10. Current Gain
Figure 11. Input Impedance
20
10
5.0
2.0
1.0
0.5
0.2
0.1
0.1
2N4402 UNIT 1
2N4402 UNIT 2
0.2 0.3 0.5 0.7 1.0
2.0 3.0 5.0 7.0 10
IC, COLLECTOR CURRENT (mAdc)
Figure 12. Voltage Feedback Ratio
500
100
50
20
10
5.0
2.0
1.0
0.1
2N4402 UNIT 1
2N4402 UNIT 2
0.2 0.3 0.5 0.7 1.0
2.0 3.0
IC, COLLECTOR CURRENT (mAdc)
5.0 7.0 10
Figure 13. Output Admittance
Motorola Small–Signal Transistors, FETs and Diodes Device Data
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