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Section 5: Instrument specifications and documentation
S540 Power Semiconductor Test System Administrative Guide
5-2
S540-924-01 Rev. D / January 2019
Switching
The following components provide the switching capabilities of the S540.
Model 707B Switch Matrix Mainframe
The 707B Semiconductor Switch Matrix Mainframe, which is included in S540 3000 V, low-current
systems, is a programmable switch for connecting signal paths in a matrix structure. The six-slot
mainframe accepts any combination of compatible plug-in matrix cards. Model 7531 matrix cards are
used in the 707B in S540 systems.
Figure 50: 707B Semiconductor Switch Matrix Mainframe
Model 7531 Low-Current, High-Speed Matrix Card
The 7531 matrix card is an 8 × 12 low-current, high-speed Kelvin matrix with high-voltage protection
up to 3 kV. The S540 3000 V high-voltage, low-current systems include one 707B System Switch
Mainframe populated with 7531 matrix cards.
The 7531 matrix card allows high-voltage source-measure units (SMUs) to provide output to
low-voltage circuits without damage. The high-voltage pass-through signals are clamped at a safe
level by the protection modules in the circuit.
HVM1212A High-Voltage Switch Matrix
The HVM1212A is a 12 × 12 high-voltage switching matrix that can handle signals up to 3 kV. One
HVM1212A High-Voltage Switch Matrix is included in both the S540 3000 V high-voltage test system
and the 3000 V high-voltage, low-current test system.