Agilent Technologies EasyEXPERT, Manual, Page: 574 / 610

25 PowerBJT
25.8 Ic-Ib for Expanders (A.05.03)
[Supported Analyzer]
B1505A
[Description]
Gummel-Plot measurement by using UHCU, HVMCU and UHVU while the voltage drop at the output
resistance of expanders is compensated to make Vce constant.
[Device Under Test]
Power BJT, 3 terminals
[Device Parameters]
Polarity: NPN (SMUs force the specified value) or PNP (SMUs force the negative specified value).
Y1AxisIcMin: Y1 axis (Ic) minimum value
Y1AxisIcMax: Y1 axis (Ic) maximum value
Y2AxishFEMin: Y2 axis (hFE) minimum value
Y2AxishFEMax: Y2 axis (hFE) maximum value
[Test Parameters]
Memo: Memorandum
Base: SMU connected to Base terminal, primary sweep voltage output
IbStart: Sweep start current for base pulse bias
IbStop: Sweep stop current for base pulse bias
IbStep: Sweep step current for gate pulse bias
VbeLimit: Upper limit of gate voltage
IbBase: Base pulse baseline current
Ibwidth: Base pulse width
IbDElay: Base pulse delay time
Collector: SMU connected to drain terminal, constant voltage output
Vce: Collector voltage
IcLimit: Upper limit of drain current
VceBase: Collector pulse base line voltage
VceWidth: Collector pulse width
VceDelay: Collector pulse delay time
Emitter: GNDU connected to emitter terminal
PulsePeriodMode: Pluse period mode, AUTO or MANUAL
ManualPulsePeriod: Pulse period, effective if PulsePeriodMode=MANUAL
MeasurementTime: Actural measurement time for a pulse period
PulseAvgCnt: Pulse averaging count
[Extended Test Parameters]
VceLimit: Upper limit of collector voltage during a search
VSrchOffset: Offset voltage to start searching
VSrchRange: Minimum search range of collector voltage
VSrchPoint: Search step count
VSrchLimit: Limit of output voltage during a search
Debug: Turn on/off debug mode
LoopMax: Maximu loop count for repetitive search
Agilent EasyEXPERT Application Library Reference, Edition 8
25-14