53
Step 6. 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 7. The graph window pops up, and the measurement starts.
Step 8. You can see the Rds-Vgs_DP graph in figure 3-10.
Figure 3-10 plots Collector-Emitter saturation voltage in Y1 axis and Emitter-Base
saturation voltage in Y2 axis versus the collector current in X axis. Vce_Sat and
Vbe_Sat parameters are automatically extracted using the line function at the speci-
fied conditions and shown in the Parameters display. The markers for Vce(sat) and
Vbe(sat) marked by circles on the figure are automatically located by using the
marker function of the Auto Analysis capability.
Review:
Measured Vce_sat is 240 mV at Ic= 8 A and Ib=0.8 A test condition. The specifica-
tion of MJL4281AG is maximum 1.0 V.
Measured Vbe_sat is 1.01 V at the same test condition. The specification of
MJL4281AG is maximum 1.4 V.
The measured parameters are much lower than the specification limits and agree to
the data sheet specification.
A`. Measurement Procedure: Vce(sat)-Ic 2 Application Test
- Starting from pre-defined test setup of My favorite Setup
This test approach starts measurements by using a pre-defined test setup saved in
My favorite Setup instead of starting from a scratch by using an Application Test
Library.
Setup and execute the test by following the next steps. The same instruction steps
are illustrated by the numbers on the "1`. Starting from Application Test Library"
side of figure 3-9.
Step 1. Click the Preset group of My Favorite Setup.
Step 2. Select Example_AT preset group.
Step 3. Select Vce(sat)-Ic 2 (Click the Vce(sat)-Ic 2).
Step 4. Click "Recall" button.
Then go to step 5 of "Starting from Application Test Library" above, and continue by
following the test step numbers.
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