The Keithley 2635B is a single-channel SourceMeter SMU instrument that sources and measures voltage and current with 6½-digit resolution across four quadrants. Built on third-generation SMU technology, it delivers 30.3 W maximum output per channel and integrates sourcing, measurement, and test automation into one unit, eliminating the need for separate equipment in I-V characterization and production test environments.
Technical Specifications
Voltage Performance
• Source/Measure Range: ±200 V maximum
• Minimum Source Range: ±200 mV
• Programming Resolution: 5 µV (200 mV range) to 500 µV (20 V range)
• Typical Accuracy: 0.02% + 375 µV (200 mV range)
• Voltage Compliance: Bipolar limit, 10 mV minimum
Current Performance
• Source/Measure Range: 10 A pulse / 1.5 A DC maximum
• Minimum Source Range: 1 nA, 100 pA
• Measurement Resolution: 0.1 fA minimum
• Current Compliance: Bipolar limit, 10 nA minimum
Measurement Capabilities
• Resistance Range: 500 nΩ to 10 pΩ
• Measurement Modes: Normal Mode (high bandwidth) and High-C Mode (slower bandwidth for capacitive loads)
• Display: Dual-line readout
Power & Physical
• Maximum System Power: 200 W total
• Dimensions (bench): 104 mm H × 238 mm W × 460 mm D
– Key Features
• Test Script Processing (TSP) technology for embedded test programs
• Web browser-based remote control interface
• Keithley IVy mobile app compatibility for Android-based I-V characterization
• Model 2400 SourceMeter SMU emulation mode
• Test Script Builder for TSP development and debugging
• Optional ACS-Basic semiconductor characterization software
– Typical Applications
Benchtop I-V characterization of electronic components and materials. Highly automated production test environments requiring four-quadrant sourcing and sinking with high resolution across wide voltage and current ranges.
– Compatibility & Integration
• USB 2.0, LXI-C, GPIB, RS-232
• Digital I/O and TSP-Link for multi-channel parallel testing expansion
