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The Keithley 2651A is a High Power System SourceMeter Instrument in the Series 2600A family, designed specifically to characterize and test high power electronics. As a single instrument it combines a four-quadrant voltage and current source/load with precision voltage and current meters, allowing it to function as a semiconductor characterization instrument, a V or I waveform generator, a V or I pulse generator, a precision power supply, a true current source, a digital multimeter with 5½-digit resolution, and a precision electronic load.
Applications listed for the 2651A include power semiconductor, HBLED, and optical device characterization and testing; characterization of GaN, SiC, and other compound materials and devices; semiconductor junction temperature characterization; high speed, high precision digitization; electromigration studies; and high current, high power device testing. The instrument is positioned to improve productivity in applications across the R&D, reliability, and production spectrums, including high brightness LEDs, power semiconductors, DC-DC converters, batteries, and other high power materials, components, modules, and subassemblies.
ValueTronics has been a trusted source for new and pre-owned test and measurement equipment since 1992, operating from a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every instrument we sell — including high-power source-measure units like the 2651A — is processed, inspected, and tested at our own facility before it ships. That hands-on workflow is what distinguishes ValueTronics from drop-shippers and pass-through brokers: when a high-power SMU leaves our dock, our team has confirmed it is ready for the lab bench it is going to.
Keithley Instruments was founded in Cleveland, Ohio in 1946 and became a recognized authority in low-level precision measurement and source-measure instrumentation. Keithley was acquired by Danaher Corporation in 2010 and, following Danaher's 2016 separation of its industrial test and measurement businesses, is now part of Fortive Corporation alongside Tektronix. Keithley-branded SourceMeter instruments continue to be developed and supported under the Keithley name within the Fortive group.
| Category | Specification | Value |
|---|---|---|
| Power | Maximum Output Power (Pulse) | 2,000 W (±40 V, ±50 A) |
| Power | Maximum Output Power (DC) | 202 W maximum |
| Power | DC Voltage/Current Limits | ±10.1 V @ ±20.0 A; ±20.2 V @ ±10.0 A; ±40.4 V @ ±5.0 A |
| Power | DC Current/Voltage Limits | ±5.05 A @ ±40 V; ±10.1 A @ ±20 V; ±20.2 A @ ±10 V |
| Power | Operation | Four-quadrant source or sink operation |
| Pulse | Minimum Programmable Pulse Width | 100 µs |
| Pulse | Pulse Width Programming Resolution | 1 µs |
| Pulse | Duty Cycle | 1% – 100% |
| Pulse | Minimum Pulse Rise Time (50 A, 0.05 Ω) | 25 µs (typical) |
| Pulse | Minimum Pulse Rise Time (50 A, 0.2 Ω) | 57 µs (typical) |
| Pulse | Minimum Pulse Rise Time (50 A, 0.4 Ω) | 85 µs (typical) |
| Pulse | Minimum Pulse Rise Time (20 A, 0.5 Ω) | 90 µs (typical) |
| Pulse | Minimum Pulse Rise Time (50 A, 0.8 Ω) | 120 µs (typical) |
| Pulse | Minimum Pulse Rise Time (20 A, 1 Ω) | 180 µs (typical) |
| Pulse | Minimum Pulse Rise Time (10 A, 2 Ω) | 330 µs (typical) |
| Pulse | Minimum Pulse Rise Time (5 A, 8.2 Ω) | 400 µs (typical) |
| Voltage Accuracy | 100.000 mV Range Source Accuracy | ±(0.02% rdg. + 500 µV); Programming Resolution 5 µV |
| Voltage Accuracy | 1.00000 V Range Source Accuracy | ±(0.02% rdg. + 500 µV); Programming Resolution 50 µV |
| Voltage Accuracy | 10.0000 V Range Source Accuracy | ±(0.02% rdg. + 5 mV); Programming Resolution 500 µV |
| Voltage Accuracy | 20.0000 V Range Source Accuracy | ±(0.02% rdg. + 5 mV); Programming Resolution 500 µV |
| Voltage Accuracy | 40.0000 V Range Source Accuracy | ±(0.02% rdg. + 12 mV); Programming Resolution 500 µV |
| Voltage Accuracy | Integrating ADC Accuracy (100 mV / 1 V) | ±(0.015% rdg. + 300 µV) |
| Voltage Accuracy | Integrating ADC Accuracy (10 V / 20 V) | ±(0.015% rdg. + 3 mV) |
| Voltage Accuracy | Integrating ADC Accuracy (40 V) | ±(0.015% rdg. + 8 mV) |
| Voltage Accuracy | High Speed ADC Accuracy (100 mV / 1 V) | ±(0.015% rdg. + 600 µV) |
| Voltage Accuracy | High Speed ADC Accuracy (10 V / 20 V) | ±(0.015% rdg. + 8 mV) |
| Voltage Accuracy | High Speed ADC Accuracy (40 V) | ±(0.015% rdg. + 15 mV) |
| Current Accuracy | 100.000 nA Range Source Accuracy | ±(0.1% rdg. + 500 pA); Programming Resolution 2 pA |
| Current Accuracy | 1.00000 µA Range Source Accuracy | ±(0.1% rdg. + 2 nA); Programming Resolution 20 pA |
| Current Accuracy | 10.0000 µA Range Source Accuracy | ±(0.1% rdg. + 10 nA); Programming Resolution 200 pA |
| Current Accuracy | 100.000 µA Range Source Accuracy | ±(0.03% rdg. + 60 nA); Programming Resolution 2 nA |
| Current Accuracy | 1.00000 mA Range Source Accuracy | ±(0.03% rdg. + 300 nA); Programming Resolution 20 nA |
| Current Accuracy | 10.0000 mA Range Source Accuracy | ±(0.03% rdg. + 6 µA); Programming Resolution 200 nA |
| Current Accuracy | 100.000 mA Range Source Accuracy | ±(0.03% rdg. + 30 µA); Programming Resolution 2 µA |
| Current Accuracy | 1.00000 A Range Source Accuracy | ±(0.08% rdg. + 3.5 mA); Programming Resolution 200 µA |
| Current Accuracy | 5.00000 A Range Source Accuracy | ±(0.08% rdg. + 3.5 mA); Programming Resolution 200 µA |
| Current Accuracy | 10.0000 A Range Source Accuracy | ±(0.08% rdg. + 6 mA); Programming Resolution 200 µA |
| Current Accuracy | 20.0000 A Range Source Accuracy | ±(0.08% rdg. + 8 mA); Programming Resolution 500 µA |
| Current Accuracy | 50.0000 A Range Source Accuracy | ±(0.08% rdg. + 50 mA); Programming Resolution 2 mA |
| Source | Noise (10 Hz – 20 MHz) | <100 mV peak-peak (typical), <30 mV RMS (typical) |
| Source | Voltage Overshoot | <±(0.1% + 10 mV) (typical) |
| Source | Current Overshoot | <±0.1% (typical) |
| Source | Remote Sense Operating Range | Max voltage between HI and SENSE HI = 3 V; Max voltage between LO and SENSE LO = 3 V |
| Source | Voltage Source Output Settling Time | <50 µs best range |
| Source | Current Source Output Settling Time | <80 µs best range |
| Meter | Maximum Load Impedance (Normal Mode) | 10 nF (typical), 3 µH (typical) |
| Meter | Maximum Load Impedance (High Capacitance Mode) | 50 µF (typical), 3 µH (typical) |
| Meter | Measure Input Impedance | >10 GΩ |
| Meter | Common Mode Voltage | 250 VDC |
| Meter | Contact Check | Built-in; 1 ms minimum measurement time; 5% basic accuracy |
| Measurement Speed | High Speed ADC Burst Rate | Up to 1,000,000 readings/second (1 µs/point) |
| Measurement Speed | Minimum Measurement Range Change | 143 µs |
| Measurement Speed | Minimum Source Range Change | 2.5 ms |
| Measurement Speed | Minimum Source Function Range Change | 1.0 ms |
| Triggering | Trigger In to Trigger Out | 0.5 µs, typical |
| Triggering | Synchronization (single- or multi-node source change) | <0.5 µs, typical |
| General | USB | USB 2.1 Host Controller, supports external data storage |
| General | PC Interface | IEEE-488.1 and .2; LXI Class C Ethernet; RS-232 |
| General | Digital I/O Interface | 14 open drain I/O bits; 5.25 V max |
| General | Power Supply | 100 V to 250 VAC, 50 Hz – 60 Hz (auto sensing), 550 VA max |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Keithley
Condition
Used
Manufacturer
Keithley
Volts
40 V
Volts
2 kW
Amps
50 A
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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