Keithley 7012-S

The Keithley 7012-S is a 4×10 matrix switch card for use with Keithley 7001 and 7002 mainframes. It provides 2-pole Form A (Hi, Lo) switching across 4 rows and 10 columns, with screw terminal connectors rated for #16 to #22 AWG wire. The card handles DC signals up to 110 V at 1 A (30 VA resistive load) and AC signals to 125 V RMS or 175 V AC peak at the same current and power level. Common mode voltage tolerance reaches 175 V peak to chassis.

– Technical Specifications

• Matrix Configuration: 4 rows × 10 columns, 2-pole Form A (Hi, Lo) switching
• DC Signal Rating: 110 V DC, 1 A switched, 30 VA (resistive load)
• AC Signal Rating: 125 V RMS or 175 V peak AC, 1 A switched, 60 VA (resistive load)
• Common Mode Voltage: 175 V peak, any pin to chassis
• Channel Resistance: < 1 Ω per conductor
• Contact Potential: < 500 nV per contact pair; < 1.5 µV to < 3 µV per single contact
• Offset Current: 10⁹ Ω, 10⁹ Ω, 10⁹ Ω, < 400 pF
• Crosstalk (1 MHz, 50 Ω load): < -40 dB
• Insertion Loss: < 0.1 dB below 1 MHz; < 3 dB below 2 MHz (50 Ω source and load)
• Relay Drive Current: 16 mA per relay
• Contact Life (Cold Switching): 10⁸ closures
• Contact Life (Maximum Signal Levels): 10⁵ closures

– Key Features

• Removable row jumpers allow isolated backplane operation
• Low channel resistance and minimal contact potential for precision measurement applications
• Screw terminals support up to 28 conductors at maximum wire size (#16 AWG) or 88 at typical size (#22 AWG)
• Operating temperature range: 0°C to 50°C (up to 35°C at < 80% RH)
• Storage temperature range: -25°C to 65°C
• Conforms to EU Directive 89/336/EEC (EMC) and 73/23/EEC (safety, EN61010-1/IEC 1010)

– Typical Applications

Signal routing in sensitive DC measurement systems, low-level analog switching, and test automation requiring matrix switching with minimal crosstalk.

– Compatibility & Integration

Designed for Keithley 7001 and 7002 switch mainframes. Expandable via connection to the analog backplane or pairing with a 7011 multiplexer card.