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The Keithley 7174A is an 8x12 high-speed, low-leakage current matrix card built for semiconductor research, development, and production applications that require high-quality switching of I-V and C-V signals. Each crosspoint is a 2-pole Form A configuration that switches both signal and guard, and connections are made through 3-lug triax connectors with the outer shell tied to chassis for safety and noise shielding. The center conductor is fully surrounded by the inner conducting shield, allowing fully guarded measurements with higher isolation and improved speed and accuracy.
A switching matrix routes test signals from source and measurement instruments to multiple devices or test points under software control, eliminating the need to manually reconnect cables between measurements. In a low-current semiconductor characterization setting, the matrix card sits between the SMU and the device under test, and its leakage, offset current, and dielectric absorption directly affect how quickly and accurately the measurement system can resolve small currents. The 7174A is intended for these low-level signal environments, where parasitic capacitance and offset currents on the switching path would otherwise dominate the measurement.
ValueTronics has supported test and measurement professionals since 1992 and operates from a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, where our team stores, inspects, and tests the equipment we offer. Working directly with our facility means engineers and procurement teams interact with people who can confirm condition, configuration, and availability against the actual unit rather than a drop-shipped listing, which is particularly valuable for specialized switching hardware like the 7174A that integrates with a specific mainframe and SMU ecosystem.
Keithley Instruments is a precision measurement brand long associated with low-current, low-voltage, and semiconductor characterization instruments. Keithley became part of Tektronix in 2010, and the Keithley product lines, including the 7174A matrix card and the SourceMeter SMU instruments referenced for compatibility on this datasheet, are now offered under the Tektronix company umbrella while retaining the Keithley brand identity.
| Specification | Value |
|---|---|
| Matrix Configuration | Single 8 rows x 12 columns. Expanding the columns can be done internally by connecting the rows of multiple 7174A cards together with coax jumpers. |
| Crosspoint Configuration | 2-pole Form A (Signal Guard) |
| Connector Type | 3-lug triax (Signal, Guard, Chassis) |
| Maximum Signal Level (Pin-to-pin or Pin-to-Chassis) | 200V, 2A carry current |
| Contact Life (Cold Switching) | 108 closures |
| Offset Current | 100 fA max., 10 fA typical (with 0V applied to inputs and outputs) |
| Isolation, Path (Signal to Signal) | >2x1014 Ω, 1 pF |
| Isolation, Common (Signal to Chassis) | >1014 Ω, <10 pF |
| Settling Time | <2.5s to 400 fA (all pathways) after 10V applied (typical) |
| Crosstalk (1 MHz, 50Ω Load) | <-70 dB |
| Insertion Loss (1 MHz, 50Ω Load) | <-0.2 dB typical |
| 3dB Bandwidth (50Ω Load, 50Ω Source) | 30 MHz typical |
| 3dB Bandwidth (1 MΩ Load, 50Ω Source) | 40 MHz typical |
| Relay Settling Time | <1 ms |
| Maximum Leakage (Pin to Ground) | 0.01 pA/V |
| Maximum Leakage (Pin to Pin) | 0.005 pA/V |
| Insulation Resistance | 6.7x1013 Ω minimum |
| Capacitance (Guard Driven), Path to Ground | <10 pF |
| Capacitance (Guard Driven), Path to Path | 1 pF typical |
| EMC | Conforms to European Union Directive 89/336/EEC |
| Safety | Conforms to European Union Directive 73/23/EEC (meets EN61010-1/IEC 1010) |
| Operating Environment | 0° to 50°C, up to 35°C at 70% R.H. |
| Storage Environment | -25° to +65°C |
| Offset Current and Path Isolation Specifications Environment | 23°C, <60% R.H. |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Keithley
Condition
Used
Manufacturer
Keithley
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On-site Lab
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