The Keithley 7053 High Current Scanner Card is a 10-channel switching module engineered for automated testing within Keithley switching mainframes. It routes and switches high current signals up to 5A at 300V peak, delivering reliable performance across component testing, power supply evaluation, solar cell characterization, and IC validation. The card features 2-pole Form A contacts with common Guard and Z-pole Form C relays, offering contact resistance of 0.15Ω maximum and contact potential below 1mV. Unselected inputs can be shorted via user-removable jumpers or left open for high-impedance voltage measurements. With channel isolation exceeding 10⁹Ω and differential input isolation above 10⁷Ω, the 7053 maintains signal integrity in demanding industrial and laboratory environments. Actuation time is less than 15ms, and relay contact life reaches 10⁷ closures under cold switching conditions or 10⁵ closures at maximum signal level.
## Technical Specifications
• **Channels:** 10 per card
• **Contact Configuration:** 2-pole Form A with common Guard; Z-pole Form C relays
• **Maximum Signal:** 300V peak, 5A switched, 100VA peak (resistive load only)
• **Contact Resistance:** 0.15Ω maximum; <0.15Ω to rated life
• **Contact Potential:** 10⁷ closures (cold switching); >10⁵ closures (at maximum signal level)
• **Relay Drive Current:** 80mA typical per relay
• **Common Mode Voltage:** 300V peak
• **Channel Isolation:** >10⁹Ω, 10⁷Ω to >10⁹Ω, 10¹¹Ω, <150pF
• **Actuation Time:** <15ms (exclusive of mainframe)
• **Operating Temperature:** 0°C to 50°C (up to 35°C at 70% RH)
• **Storage Temperature:** -25°C to +65°C
• **Dimensions:** 32mm H × 114mm W × 272mm L
• **Weight:** 0.37 kg
• **Connector:** Quick disconnect screw terminal, #18 AWG maximum
## Key Features
• User-removable jumpers configure unselected input behavior
• Shorted or open-circuit path selection for voltage and current measurements
• Compact form factor integrates into standard Keithley mainframe slots
• Exceeds EN61010-1/IEC 1010 safety requirements
• EMC compliance with EU Directive 89/336/EEC
## Compatibility & Integration
Designed for integration with Keithley switching mainframes including Model 7051.
