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Keithley 3761

10-Channel Low-Current Multiplexer Card

Brand: Keithley
Model No: 3761
Our Model No: 3761
Condition: NEW
PDF Document Icon Data Sheet (200 KB)


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Product Features:

  • Channels per card: 10
  • Contact configuration: Form A. Signal LO is common for all 10 channels and output; when open, signal HI is shorted to signal LO in current mode; When open, signal HI is high impedance in voltage mode
  • Connector type: SMA
  • Relay drive current: 16 mA/relay typ
  • Maximum signal level: 30V, 100 mA peak (resistive load)
  • Contact life: >106 closures at maximum signal levels; >107 closures cold switching or at low signal levels
  • Contact resistance: < 1 Ohm
  • Contact potential: < 200 μV
  • Offset current: < 1 pA (< 30 fA typical)
  • 3 dB bandwidth: 1 MHz typical
  • Actuation time: < 1 ms, exclusive of mainframe
  • Channel isolation: > 1014 Ohm, < 50 pF
  • Common mode isolation: > 109 Ohm, < 150 pF
  • Common mode voltage: < 30V maximum

The Keithley 3761 10-Channel Low-Current Multiplexer Card provides quality low-current switching. The offset current error generated is specified < 1pA, with typical performance at < 30fA. When used with a voltage source and an electrometer or picoammeter, this card can easily automate insulation resistance tests, reverse leakage tests on semiconductor junctions, or gate leakage tests on FETs.

The Keithley 3761 features both current and voltage modes. In current mode, the current path is maintained even when the channel is open. This eliminates cable charging time between measurements. In voltage mode, the input is broken and is high impedance. Input connectors are SMA for shielding of the sensitive measurements. The 3761 does not connect to the 6 common buses on the 3706A backplane, but two outputs allow for chaining several scanner cards to one measurement instrument, allowing up to 60 channels, while an isolation relay in the output HI minimizes the interaction between cards.

Model Description Buy Now Price
3761-BNC-SMA Keithley 3761-BNC-SMA 4 ft. Low Noise BNC-Male-to-SMA-Male Cable for Model 3761 Add to Cart


7712-SMA-1 Keithley 7712-SMA-1 1m SMA-Male-to-SMA-Male Cable for Models 7711 and 7712 Add to Cart


4801 Keithley 4801 1.2m BNC-Male-to-BNC-Male Low Noise Input Cable for Models 6485 and 7158 Add to Cart


4802-10 Keithley 4802-10 3m BNC-Male-to-Unterminated Low Noise Cable for Models 6482, 6485, and 7158 Add to Cart


4803 Keithley 4803 15.2m BNC-Male-to-BNC-Female Low Noise Cable Kit for Models 6482, 6485, and 7158 Add to Cart


Model Description Buy Now Price
3761-3Y-EW Keithley 3761-3Y-EW KeithleyCare 3-Year Extended Warranty for Model 3761 Add to Cart


3761-5Y-EW Keithley 3761-5Y-EW KeithleyCare 5-Year Extended Warranty for Model 3761 Add to Cart


Data Sheet: PDF Document Icon (200 KB)
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