Keithley 2420

The Keithley 2420 is a single-channel, 60 W high-voltage SourceMeter (SMU) instrument that sources and measures voltage and current with exceptional precision. Operating as a five-in-one device combining DC power source, voltage meter, current meter, and ohmmeter, it delivers four-quadrant source/sink capability across a wide dynamic range. The 2420 executes characterization and production test tasks in semiconductor, automotive, and medical device applications where accurate voltage and current control are critical.

## Technical Specifications

**Sourcing Performance**
• Voltage source: ±5 µV to ±60 V range; ±60 V maximum
• Current source: ±100 pA to ±3 A range; ±3 A maximum
• Output settling time: 100 µs typical (to 0.1% of final value)
• Output slew rate: 0.14 V/µs (60 V range, 100 mA compliance); 0.08 V/µs (20 V range, 100 mA compliance)
• Floating output: ±250 V DC from chassis ground
• Source memory: 100-point list capacity

**Measurement Performance**
• Resolution: 6½ digits
• Basic accuracy: 0.012%
• Voltage measurement: ±1 µV to ±60 V
• Current measurement: ±100 pA to ±3 A
• Resistance measurement: 10 µΩ to 21.1 MΩ
• Throughput: 1700 readings/second at 4½ digits via GPIB
• Memory buffer: 5000 readings @ 5.5 digits (two 2500-point buffers)

**Compliance & Regulation**
• Source/sink limits: 21 V @ 3.15 A; 63 V @ 1.05 A
• Voltage/current limit: Bipolar, single-value setting; minimum 0.1% of range
• Compliance accuracy: Base specification + 0.3% of range + ±0.02% of reading
• Voltage regulation (line/load): 0.01% of range
• Current regulation (line/load): 0.01% of range
• Noise (10 Hz – 1 MHz p-p): 10 mV typical into resistive load
• Temperature coefficient: (0.15 × accuracy specification)/°C

**Electrical & Power**
• Input: 100–240 V rms, 50–60 Hz (auto-detected)
• Power consumption: 220 VA

## Key Features

• 2-, 4-, and 6-wire remote voltage sensing
• Sense lead resistance: Max. 1 MΩ for rated accuracy
• Sense input impedance: >10¹⁰ Ω
• Guard offset voltage: <300 µV typical
• Digital I/O: 1 trigger input, 4 TTL/relay drive outputs

## Typical Applications

Semiconductor characterization, device quality assurance, production testing, high-voltage component evaluation, and precision I-V curve measurement.

## Compatibility & Integration

SCPI command set; GPIB (IEEE-488), RS-232, Keithley Trigger Link interfaces.