Agilent Technologies EasyEXPERT

11 Reliability
11.1 BJT EB RevStress 3devices: Emitter-Base junction Reverse bias Stress test,
4 terminals, 3 devices (A.01.20)
[Supported Analyzer]
B1500A
[Description]
Performs the bipolar transistor Emitter-Base junction reverse bias stress test, and plots the accumulated stress
time vs collector current/base current/current amplification factor characteristics. Maximum three devices can
be measured by a test execution. This test is performed as follows.
1. performs initial characterization
2. applies stress voltage
3. performs interim characterization
4. saves measurement data
5. repeats 2 to 4 until TotalStressTime elapses
[Device Under Test]
Bipolar transistor, 4 terminals, 3 devices
[Required Accessories]
Agilent B2200A or B2201A switching matrix 1 unit
GPIB cable
Connect B2200A/B2201A to B1500A with a measuring cable and GPIB cable.
Set information on B1500A SMU channel's connection to the B2200A/B2201A input port properly on the
Switching Matrix tab screen of the Configuration window.
Set the output channel number of B2200A/B2201A connected to each terminal of a device under test properly
in the Tr#Base/Tr#Collector/Tr#Emitter/Tr#Subs field (# is an integer from 1 to 3) of Test Parameters area.
[Device Parameters]
Polarity: NPN (SMUs force the specified value) or PNP (SMUs force the negative specified value)
Le: Emitter length
We: Emitter width
Temp: Temperature (deg C)
IcMax: Maximum collector current value
[Test Parameters]
IntegTime: Integration time (SHORT, MEDIUM, LONG)
Tr#Base: SWM Pin Assign setting for Base of devices
Tr#Collector: SWM Pin Assign setting for Collector of devices
Tr#Emitter: SWM Pin Assign setting for Emitter of devices
Tr#Subs: SWM Pin Assign setting for Subs of devices
where, # is an integer from 1 to 3.
[Test Parameters for Sampling_Stress]
TotalStrsTime: Total stress time
Tr#StrsEmitter: SMU connected to Emitter terminal of devices, constant voltage output
StrsBase: SMU connected to Base terminal, constant voltage output
StrsCollector: SMU connected to Collector terminal, constant voltage output
StrsSubs: SMU connected to Substrate terminal, constant voltage output
Tr#VeStrs: Stress voltage for Emitter terminal of devices
where, # is an integer from 1 to 3.
Agilent EasyEXPERT Application Library Reference, Edition 8
11-3