FET: Id-Vgs for Expander Test

Performs an Id-Vgs measurement by using UHCU, HVMCU and UHVU while the voltage drop at the output resistance of expanders is compensated to make Vds constant.

Used with:

  • B1506A: FET DUT

  • B1505A: FET DUT, IV test type
- Available only if you choose the H51 or H71 Instrument option in the Hardware Configuration dialog.
- This test requires Id-Vgs PD1000A.xtdconfiguration file. See Install PD1000A Configuration Files for more information.

 

Set the test parameters based on the specifications in the device's data sheet:
- If the data sheet lists a maximum test limit for a parameter, use that value.
- If there is no maximum test limit, use a typical value.

See also Setting IV and CV Test Parameters.

Test Schematic

Gate Parameters

Gate: The SMU connected to Gate terminal, primary sweep voltage output. Select Gate SMU from the drop-down menu.

VgsStart (V): The Sweep start voltage for gate pulse bias.

VgsStop (V): The Sweep stop voltage for gate pulse bias.

VgsStep (V): The Sweep step voltage for gate pulse bias.

IgLimit (A): The upper limit of gate current.

VgsBase (V): The Gate pulse baseline voltage.

VgsWidth (s): The Gate pulse width.

VgsDelay (s): The Gate pulse delay time.

Source: The GNDU:GND connected to Source terminal. This field cannot be changed.

Gate Resistance: Gate Resistance: Specify the desired Gate Resistance for the device, either 0 (default), 10, 100, or 1000 W.You must set the same Gate Resistance value in two places: 1) in the parameters for this test; and 2) in the EasyEXPERT software for your B1505A or B1506A power analyzer. See Additional IV and CV Test Information.

Drain Parameters

Drain: The SMU connected to Drain terminal, secondary sweep voltage output. In general, use the Input UHCU for this test.

Vds (V): The Drain voltage.

Vds (V): The Drain voltage.

Vds (V): The Drain voltage.

IdLimit (A): The Upper limit of drain current.

VdsBase (V): The Drain pulse base line voltage.

VdsWidth (s): The Drain pulse width.

VdsDelay (s): The Drain pulse delay time.

PulsePeriodMode: The Pulse period mode, AUTO or MANUAL. (If you choose MANUAL, you must also set the ManualPulsePeriod parameter.)

ManualPulsePeriod (s): The Pulse period. Use this parameter only when you have selected PulsePeriodMode = MANUAL.

PulseWidth (s): The Pulse width.

MeasTime (s): The Actual measurement time for a pulse period.

PulseAvgCnt: The Pulse averaging count.