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c. Scale parameter:
You can choose "Linear" or "LOG" sweep selection. The hFE measure-
ment is typically made in a few decades of wide measurement range in
the collector current, and LOG10 or LOPG25 which measures 25 points in
a decade of Ib sweep span would be a reasonable choice.
d. Collector SMU setup
e. Collector SMU measurement parameters
f. Parameter extraction Ic parameter setup. The hFE and Vbe(on) are ex-
tracted at this collector condition.
Step 6. Click Extended Setup.
Extended Setup window opens.
g. Base voltage limit (compliance voltage) is set
h. Measurement time is set
i. IcZero is the minimum x-axis collector current vale to display the output
graph.
j. PlotVb (ON/OFF): You have a choice for measuring Vbe or not.
Step 7. Make sure the device is properly selected as shown in the "Device used in
the example" part or your selection.
Close the lid of N1259A test fixture.
Start the measurement. (Click the Single button )
Step 8. The graph window pops up, and the measurement starts.
Step 9. You can see the hFE-Ic curve (Y1 axis) and Vbe-Ic (Y2 axis) curve as shown
in figure 3-8.
The hFE and the Vbe_On parameters at the specified collector current
(Ic@Parameters) are automatically extracted by using the line function and displayed
in the Parameters field of the output display. The markers are located near the
specified Ic @Parameters point.
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