Agilent Technologies EasyEXPERT, Manual, Page: 519 / 610

21 GaN FET
21.4 FET Current Collapse Signal Monitor: GaN FET Current Collapse
characteristics (using N1267A) (A.05.03)
[Supported Analyzer]
B1505A
[Description]
Measures Current Collapse of GaN FET.
On state current, voltage and resistance after off state are measured by pulse and signal monitor using N1267A.
[Device Under Test]
GaN FET, 4 terminals
[Device Parameters]
Temp: Temperature
RdsAxisMin: Y axis (Rds) minimum value
RdsAxisMax: Y axis (Rds) maximum value
VdsAxisMin: Y axis (Vds) minimum value
VdsAxisMax: Y axis (Vds) maximum value
IdAxisMin: Y axis (Id) minimum value
IdAxisMax: Y axis (Id) maximum value
[Test Parameters]
Memo: Memorandum
GNDU: GNDU connected to N1267A GNDU input
HVSMU: HVSMU connected to N1267A HVSMU input
HCSMU: HCSMU connected to N1267A HCSMU input
SwitchControl: MCSMU connected to N1267A Switch Control
Gate: MCSMU/HCSMU connected to Gate terminal
Substrate: SMU/GNDU connected to Substrate
VgOff: Gate off voltage
VgOn: Gate on voltage
VdOff: Drain voltage applied while off state
VdOn: Drain voltage applied while on state (Voltage drops inside of N1267A according to on state current)
IdOnLimit: Drain current compliance for on state
OffStressTime: Duration of VdOff application
OnTime: Duration of VdOn application
[Extended Test Parameters]
MonitorStartTime: Time offset from turning DUT on to starting signal monitor
MonitorDuration: Duration of signal monitor
IgLimit: Gate current compliance
IdOffLimit: Drain current compliance for off state
（
AUTO: 8mA for VdOff up to 1500V, 4mA for VdOff
above 3kV
）
DischargingSwitchControl: Option for discharging by N1267A internal switch (for the case of on state current
less than IdOffLimit)
DischargingWaitTime: Wait time for outputting gate on voltage after starting discharging by N1267A internal
switch (effective in case of DischargingSwitchControl On)
VOnHoldTime: Hold time of VOn output by HCSMU before turning DUT on
TimeAxisScale: Option for scale of X axis (Time)
VerboseDataStore: Option for saving data of the embedded classic test setup
[Measurement Parameters]
Agilent EasyEXPERT Application Library Reference, Edition 8
21-9