Product Overview
The Keithley 2425 SourceMeter® is a multi-function instrument integrating precision power supply, current source, voltage source, electronic load, and measurement capabilities. Designed for semiconductor device testing, material characterization, and high-precision sensor calibration, its key advantages include:
Four-quadrant operation: Capable of both sourcing and sinking current (± voltage/current) to simulate real-world load conditions.
Ultra-high precision: Voltage resolution down to 1μV, current resolution to 100pA, covering measurements from microamps to amps.
Pulse mode: Supports pulse widths as short as 100μs, ideal for transient testing of power devices.
Core Features
Integrated Source and Measurement
Simultaneous operation: Output current/voltage while measuring device parameters (voltage, current, resistance) without external meters.
Auto-ranging: Full automatic voltage (0-105V) and current (10nA-1.05A) range switching to eliminate manual errors.
Four-Quadrant Operation
Quadrants I/III: Source mode (output positive/negative voltage or current).
Quadrants II/IV: Sink mode (absorb current, emulating electronic loads), suitable for battery discharge, LED aging tests, etc.
High Accuracy and Low Noise
Voltage accuracy: ±0.05% of setting + 200μV (high-precision mode).
Current accuracy: ±0.05% of setting + 100nA (1mA range).
Low-noise design: <10μV RMS (1Hz-100kHz bandwidth) for reliable small-signal measurements.
Pulse and Sweep Capabilities
Programmable pulses: 100μs-10s pulse width with adjustable duty cycle and rise/fall times.
Linear/logarithmic sweeps: Automated voltage/current/resistance sweeps (e.g., for semiconductor IV curve testing).
Automation and Remote Control
SCPI command support: Remote control via GPIB/USB/RS-232/LAN, compatible with LabVIEW, Python, etc.
Trigger synchronization: Hardware trigger I/O for multi-device cascaded testing.
Typical Applications
Semiconductor Testing:
Diode/transistor IV characterization
MOSFET RDS(on) measurement
Power device transient thermal resistance (pulse mode)
Energy & Materials:
Industrial QC:
Technical Specifications
| Parameter | Specification |
|---|
| Output Range | 0-105V DC, 0-1.05A DC, max. 20W (continuous) |
| Four-Quadrant Op. | Supports sourcing/sinking (±105V, ±1.05A) |
| Voltage Resolution | 1μV (min.), 1mV (standard) |
| Current Resolution | 100pA (min.), 100nA (standard) |
| Accuracy | Voltage: ±0.05% + 200μV; Current: ±0.05% + 100nA (@23°C±5°C, post-calibration) |
| Pulse Mode | 100μs-10s pulse width, adjustable duty cycle |
| Interfaces | GPIB (IEEE-488.2), USB 2.0, RS-232, optional LAN |
| Safety Certs. | IEC 61010-1 CAT II 300V, CE/UL/CSA certified |
| Dimensions/Weight | 213×88×350 mm / 3.2 kg |
Options & Accessories
Optional:
High-power module (extends to 40W pulsed power)
4-wire Kelvin test leads (eliminate lead resistance)
RF-shielded test fixture (for low-current noise measurements)
Software:
Free Keithley KickStart automation software
Compatible with third-party tools (e.g., MATLAB, Python)
Key Advantages
Lab-grade precision: NIST-traceable calibration, long-term stability <0.01%/year.
Industrial reliability: MIL-STD-810G compliant for vibration/shock resistance.
Flexibility: Supports R&D to production-line testing.
Operation Example (IV Curve Test)
Connect the device (e.g., diode).
Set sweep parameters (e.g., 0-5V, 0.1V steps).
Start auto-sweep; instrument outputs voltage while measuring current.
Generate IV curves via KickStart software and export data.
For demos or detailed documentation, contact authorized Keithley distributors.
