Technical data

2-2 Agilent B1500A Configuration and Connection Guide, Edition 5
B1500A Accessories
Accessories for the B1500A
2.1 Accessories for the B1500A
This section describes cables, adapters and accessories for the B1500A Semiconductor
device analyzer.
2.1.1 SMU cables
• Triaxial cables - have three leads - a central conductor for the signal, an encapsulating
conductor that shields the center signal by employing the same voltage thus decreasing
a possible leakage current - and an outer conductor that serves as Common.
• Kelvin Triaxial cables - consist of two central twisted parallel leads that are connected
to Force and Sense terminals of a SMU. A common guard and an outer conductor that
is connected to Common further shield the two leads. By Kelvin connection it is
possible to limit the influence of the connection leads on a lower resistively
measurement to a minimum. Kelvin Triaxial cables should be employed when
performing very sophisticated measurements.
• GNDU cables - have a very similar face to Triaxial cables. However the configuration
of signal path is different from Triaxial cable. A central conductor for the Sense of
GND voltage, outer conductor is used as GND signal, and the outermost conductor is
for Common. In addition to that, the current capability of 16493L GND unit cable for
B1500A is 4.2 Amps.
• BNC cables - Co-axial type cables. Central signal line is surrounded by shield
potential. However, this is not suitable for ultra low current measurement below nA
level. For these low current measurements, we recommend the Triaxial cables.
Table 2-1 SMU cables for B1500A semiconductor device analyzer
Model/Option Description Additional Information
Triaxial cable
16494A-001 Triaxial cable, 1.5 m
16494A-002 Triaxial cable, 3 m
16494A-003 Triaxial cable, 80 cm
16494A-004 Triaxial cable, 40 cm
16494A-005 Triaxial cable, 4 m
Kelvin triaxial cable
16493K-001 Kelvin triaxial cable, 1.5 m
16493K-002 Kelvin triaxial cable, 3 m