MPF4392, MPF4393
100
10
Tchannel = 25°C
90
9.0
80
8.0
70
rDS(on) @ VGS = 0
60
50
7.0
6.0
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, ZERO-GATE VOLTAGE DRAIN CURRENT (mA)
Figure 10. Effect of IDSS On Drain−Source
Resistance and Gate−Source Voltage
NOTE 2
The Zero−Gate−Voltage Drain Current (IDSS), is the
principle determinant of other J−FET characteristics.
Figure 10 shows the relationship of Gate−Source Off
Voltage (VGS(off)) and Drain−Source 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 MPF4392
The electrical characteristics table indicates that an
MPF4392 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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