The Keithley 2401 Low Cost SourceMeter® SMU Instrument is a single-channel, four-quadrant source measure unit that integrates voltage and current sourcing with precision measurement capabilities into one compact platform. It functions simultaneously as a DC power supply, true current source, digital multimeter, and electronic load—eliminating the need for multiple instruments. The 2401 delivers tightly coupled sourcing and measurement for characterizing discrete semiconductors, passive components, integrated circuits, optoelectronics, and circuit protection devices across R&D and production environments.
Technical Specifications
Sourcing Performance:
• Voltage source range: 1 µV to 20V (±200mV to ±20V specific ranges)
• Current source range: 10 pA to 1A (±1 µA to ±1A specific ranges)
• Maximum output power: 20W
• Source and sink limits: ±21V @ ±1.05A
• Four-quadrant operation supports both sourcing and sinking modes
Measurement Capabilities:
• 6½-digit resolution digital multimeter
• Basic measurement accuracy: 0.012%
• Voltage resolution: 100 nV
• Current resolution: 1 pA
• Resistance measurement: 0.2Ω to 200MΩ, and >200MΩ
• Reading speed: Up to 1700 readings/second at 4½ digits via GPIB
• 2-, 4-, and 6-wire remote voltage sensing supported
Electrical Performance:
• Line regulation: 0.01% of range
• Load regulation: 0.01% of range + 100µV (voltage) or +100pA (current)
• Temperature coefficient: ±(0.15 × accuracy specification)/°C on 20V and 1000V ranges; ±(0.30 × accuracy specification)/°C on 200mV and 2V ranges
• Power supply: 100V
– Key Features
• Linear staircase, logarithmic staircase, and custom sweep waveforms for voltage and current
• Pass/fail comparator for fast component sorting and binning
• Source memory list stores up to 100 test configurations for standalone execution
• Integrated compliance limits protect devices under test from overstress
– Typical Applications
Ideal for discrete semiconductor characterization, passive component testing, IC validation, optoelectronic device measurement, and circuit protection device qualification.
– Compatibility & Integration
GPIB connectivity enables integration into automated test systems while occupying minimal rack space.
