2635B Keithley Digital SourceMeter® Detailed Introduction
The 2635B Keithley Digital SourceMeter® is a high-precision, single-channel Source Measure Unit (SMU) developed by Tektronix under the Keithley brand. Designed for semiconductor device testing, materials research, and precision electronic component characterization, it integrates a precision power supply, current source, digital multimeter, pulse generator, and electronic load into a single instrument. It is particularly suited for low-current (picoampere-level) and high-impedance measurements.
Key Features
High-Precision Sourcing & Measurement
Voltage sourcing range: ±200V (DC), with 1μV resolution
Current sourcing range: ±10A (pulsed), with 10fA (femtoampere-level) resolution
Four-Quadrant Operation
Ultra-Low Noise Design
High-Speed Pulsing Capability
Supports pulse widths as short as 50μs, suitable for dynamic device testing (e.g., power MOSFETs, GaN devices).
Automation & Programmability
Compatible with LabVIEW, Python, and TSP (Test Script Processor) scripts, enabling seamless integration into automated test systems.
Typical Applications
✅ Semiconductor Device Testing: IV/CV characterization of diodes, transistors, MOSFETs, and IGBTs
✅ Nanomaterial & Thin-Film Resistance Measurements: Graphene, carbon nanotubes, high-resistance films
✅ Optoelectronic Component Testing: Solar cells, LEDs, photodiodes
✅ Precision Power Management IC Validation: LDOs, DC-DC converters, current sensors
2635B Key Specifications Comparison Table
Parameter | 2635B Specifications |
---|
Voltage Output Range | ±200V (DC), ±40V (pulsed) |
Current Output Range | ±10A (pulsed), ±1A (DC) |
Voltage Measurement Resolution | 1μV |
Current Measurement Resolution | 10fA (femtoampere, lowest range) |
Output Accuracy | ±0.015% + 2mV (voltage), ±0.05% + 200fA (current) |
Sampling Rate | Up to 100k samples/s (18-bit ADC) |
Communication Interfaces | GPIB, USB, LAN, RS-232 |
TSP Script Support | Yes (built-in high-speed test script engine) |
Four-Quadrant Operation | Yes (current sinking supported) |
Additional Features