Agilent Technologies EasyEXPERT, Manual, Page: 605 / 610

27 PowerMOSFET, PMIC, SiC
27.10 Vth Vgs(off): Vth or Vgs(off) measurement (A.05.00)
[Supported Analyzer]
B1505A
[Description]
Measures Drain current vs Gate-Source voltage characteristics and extracts the threshold voltage or the cutoff
voltage.
[Device Under Test]
Power MOSFET, 3 terminals
[Device Parameters]
Polarity: Nch (SMUs force the specified value) or Pch (SMUs force the negative specified value).
Temp: Temperature
[Test Parameters]
Memo: Memorandum
Gate: SMU connected to Gate terminal, primary sweep voltage output
VgStart: Sweep start voltage for Gate terminal
VgStop: Sweep stop voltage for Gate terminal
VgStep: Sweep step voltage for Gate terminal
Drain: SMU connected to Drain terminal
Vd: Drain voltage
Source: GNDU connected to Source terminal
Id@Vth_Vgsoff: Drain current to decide Vth or Vgs(off)
MeasMode: Measurement parameter, Vth or Vgsoff
IntegTime: Integration time
IdLimit: Drain current compliance
[Extended Test Parameters]
IgLimit: Gate current compliance
HoldTime: Hold time
DelayTime: Delay time
IdZero: Y axis (Idrain) minimum value
IdMinRange: Minimum range for the drain current measurement
IgMinRange: Minimum range for the gate current measurement
[Measurement Parameters]
Drain current Idrain
Gate current Igate
[User Function]
Ta: Temperature Ta=Temp
[Analysis Function]
For MeasMode=Vth:
Vth=@MX (X coordinate of Marker)
For MeasMode=Vgsoff:
Vgsoff=@MX (X coordinate of Marker)
[Auto Analysis]
Marker: Idrain=Id@Vth_Vgsoff
Agilent EasyEXPERT Application Library Reference, Edition 8
27-21