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MMBF4391LT1_06 Datasheet, PDF (5/6 Pages) ON Semiconductor – JFET Switching Transistors N-Channel | |||
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MMBF4391LT1, MMBF4392LT1, MMBF4393LT1
100
90
Tchannel = 25°C
10
9.0
80
8.0
70
rDS(on) @ VGS = 0
7.0
60
6.0
50
VGS(off)
5.0
40
4.0
30
3.0
20
2.0
10
1.0
0
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
IDSS, ZEROâGATE VOLTAGE DRAIN CURRENT (mA)
Figure 10. Effect of IDSS on DrainâSource
Resistance and GateâSource Voltage
NOTE 2
The ZeroâGateâVoltage Drain Current (IDSS) is the
principle determinant of other JâFET characteristics.
Figure 10 shows the relationship of GateâSource Off
Voltage (VGS(off)) and DrainâSource On Resistance
(rDS(on)) to IDSS. Most of the devices will be within
±10% of the values shown in Figure 10. This data will
be useful in predicting the characteristic variations for
a given part number.
For example:
Unknown
rDS(on) and VGS range for an MMBF4392
The electrical characteristics table indicates that an
MMBF4392 has an IDSS range of 25 to 75 mA. Figure
10 shows rDS(on) = 52 W for IDSS = 25 mA and 30 W for
IDSS = 75 mA. The corresponding VGS values are 2.2 V
and 4.8 V.
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