Keysight B1505A User’s Guide, Edition 12 3-59
Accessories
• Input GNDU
GNDU triaxial connector. For connecting 16493L GNDU cable from the
GNDU.
• Input HCSMU
Force BNC connector and Sense triaxial connector. For connecting 16493S
HCSMU cable from the HCSMU.
• Input MCSMU
Triaxial connectors. For connecting 16494A triaxial cables from Force and
Sense connectors of the MCSMU.
• Input HVSMU
HV(jack) connector. For connecting 16493T HVSMU cable from the HVSMU.
GaN Current Collapse Measurement
The GaN current collapse measurement can be performed by using the N1267A and
the B1505A installed with HVSMU, HCSMU, MCSMU, and GNDU. These
measurement resources must be connected as shown in Figure 3-21. For making the
Kelvin connection, the GNDU protection adapter is also required. Then HVSMU
and GNDU must be connected to the device under test (DUT) without passing
through the N1267A. If the DUT is a diode, ignore MCSMU for Gate in Figure
3-21.
The B1505A provides the following tracer test setup using the N1267A.
• GaN FET (N1267A):
• Id-Vds static characteristics measurement
• Id(Off)-Vds static characteristics measurement
• Id-Vds current collapse measurement
• FET current collapse measurement, oscilloscope view
• GaN Diode (N1267A):
• If-Vf static characteristics measurement
• Ir-Vr static characteristics measurement
• If-Vf current collapse measurement
• Diode current collapse measurement, oscilloscope view
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