Keysight Technologies B1505A Handbook

78
A. Measurement Procedure: Ic-Vces 2 Application Test
-Starting from Application Test Library
This test approach starts measurements by using an Application Test Library, which
starts from the default setup parameters, and you have to customize the measure-
ment parameters depending on your requirements.
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 3-24.
Step 1. Click the Application Test tab.
Step 2. Check the PowerBJT category.
Step 3,4. Select Ic-Vces 2 (Click the Ic-Vces 2 then click Select )
Step 5. Set the test parameters shown in figure 3-24 to an appropriate one depend-
ing on your B1505A configuration and your test device.
The important check points are;
a. Collector SMU setup
b. Set Vc sweep parameters
Set an appropriate IdLimit parameter so as to limit the collector current on
breakdown and to protect your device.
c. Set the BVces extraction condition:
Ic@BVces: Collector current to detect BVces.
The value should be smaller then IdLimit.
d. Set Integration time: IntegTime.
Note: Short would be a reasonable choice for protecting your device on
breakdown, or Medium for accurate leakage current measurement.
e. Base SMU setup
f. Base voltage setup. Typically it is 0 V.
g. Press Extended Setup.
Extended Setup window opens.
h. IbMinRange setup.
Note:
It is important to set this range parameter larger than the base cur-
rent that flows at breakdown condition. If this range is set smaller
than actual base current flowing from the collector on breakdown,
then the measured BVces will be not accurate.
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 Ic-Vebo graph in figure 3-25.
Figure 3-25 plots Ices collector current versus Collector - Emitter (Base) voltage. The
marker is automatically located to the specified Ic@BVces point as shown by circles
marked on the figure. Extracted BVces is shown in the Parameters display field.

Keysight Technologies B1505A Specifications

General

Brand	Keysight Technologies
Model	B1505A
Category	Measuring Instruments
Language	English