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The Keithley 2657A is a high voltage, high power, low current source measurement unit (SMU) instrument designed for characterizing and testing high voltage electronics and power semiconductors, including diodes, FETs, and IGBTs, as well as other components and materials in which high voltage, fast response, and precise measurements of voltage and current are required. It is part of the Series 2600A family of power semiconductor characterization and test solutions and offers high power output and low current measurement performance in a single SMU platform.
Applications for the 2657A include power semiconductor device characterization and testing, characterization of GaN, SiC, and other compound materials and devices, breakdown and leakage testing up to 3kV, and characterization of sub-millisecond transients. The instrument operates as a semiconductor characterization tool, a V or I waveform generator, a V or I pulse generator, a precision power supply with V and I readback, a true current source, a digital multimeter with 6½-digit resolution for DCV, DCI, ohms, and power, and a precision electronic load.
ValueTronics International has supplied the test and measurement community with new and pre-owned precision instrumentation since 1992. Every SMU and high-power source-measure instrument that moves through our inventory passes inspection and performance verification at our 20,000 square foot secure facility at 1675 Cambridge Drive in Elgin, Illinois before it ships, which is the practical difference between a verified instrument and a marketplace listing. That direct technical involvement is also why customers come back to ValueTronics for the next SMU, the next characterization system, and the trade-in conversation that funds it.
Keithley Instruments was founded in 1946 in Cleveland, Ohio and built its reputation around precision low-level electrical measurement. Keithley was acquired by Danaher Corporation in 2010, joining Tektronix in the same instrument portfolio. In 2016, Danaher's industrial instrumentation businesses, including both Keithley and Tektronix, were spun off into Fortive Corporation, where the Keithley brand and product lines continue today.
| Voltage Accuracy Specifications | |||||
|---|---|---|---|---|---|
| Range | Source Programming Resolution | Source Accuracy ±(% rdg + volts) | Display Resolution | Integrating ADC Measure Accuracy ±(% rdg + volts) | High Speed ADC Measure Accuracy ±(% rdg + volts) |
| 200 V | 5 mV | 0.03% + 50 mV | 100 µV | 0.025% + 50 mV | 0.05% + 100 mV |
| 500 V | 10 mV | 0.03% + 125 mV | 100 µV | 0.025% + 100 mV | 0.05% + 200 mV |
| 1500 V | 40 mV | 0.03% + 375 mV | 1 mV | 0.025% + 300 mV | 0.05% + 600 mV |
| 3000 V | 80 mV | 0.03% + 750 mV | 1 mV | 0.025% + 600 mV | 0.05% + 1.2 V |
| Current Accuracy Specifications | |||||
|---|---|---|---|---|---|
| Range | Source Programming Resolution | Source Accuracy ±(% rdg + amps) | Display Resolution | Integrating ADC Measure Accuracy ±(% rdg + amps) | High Speed ADC Measure Accuracy ±(% rdg + amps) |
| 1 nA | 30 fA | 0.1% + 2E−12 + VoE−15 | 1 fA | 0.1% + 6E−13 + VoE−15 | 0.2% + 6E−13 + VoE−15 |
| 10 nA | 300 fA | 0.1% + 5E−12 + VoE−15 | 10 fA | 0.1% + 5E−12 + VoE−15 | 0.2% + 5E−12 + VoE−15 |
| 100 nA | 3 pA | 0.1% + 6E−11 + VoE−13 | 100 fA | 0.1% + 6E−11 + VoE−13 | 0.2% + 6E−11 + VoE−13 |
| 1 µA | 30 pA | 0.03% + 700 pA | 1 pA | 0.025% + 400 pA | 0.08% + 800 nA |
| 10 µA | 300 pA | 0.03% + 5 nA | 10 pA | 0.025% + 1.5 nA | 0.08% + 3 nA |
| 100 µA | 3 nA | 0.03% + 60 nA | 100 pA | 0.02% + 25 nA | 0.05% + 50 nA |
| 1 mA | 30 nA | 0.03% + 300 nA | 1 nA | 0.02% + 200 nA | 0.05% + 400 nA |
| 2 mA | 60 nA | 0.03% + 1.2 µA | 1 nA | 0.02% + 500 nA | 0.05% + 1 µA |
| 20 mA | 600 nA | 0.03% + 12 µA | 10 nA | 0.02% + 5 µA | 0.05% + 10 µA |
| 120 mA | 3 µA | 0.03% + 36 µA | 100 nA | 0.02% + 24 µA | 0.05% + 50 µA |
| Supplemental Characteristics | |
|---|---|
| Typical Voltage Source Noise | 0.005% of range |
| Typical Current Source Noise | 0.08% of range |
| Typical Voltage Source Settling | <1 ms to 200 V, <7 ms to 3000 V |
| Typical Current Source Settling | <5 ms to 120 mA, <200 ms to 1 µA |
| Power Output | |
|---|---|
| Maximum DC or Pulsed Power | 180 W (±3000 V @ 20 mA, ±1500 V @ 120 mA) |
| Low Current Resolution | 1 fA |
| ADC — Integrating | Dual 22-bit precision ADCs |
| ADC — High Speed Digitizer | Dual 18-bit, 1 µs per point |
| Triggering and Synchronization | |
|---|---|
| Triggering: Trigger In to Trigger Out | 0.5 µs, typical |
| Synchronization (single- or multi-node synchronized source change) | <0.5 µs, typical |
| Programming & Software Interface | |
|---|---|
| Test Script Builder | Integrated development environment for building, running, and managing TSP scripts |
| TSP Express (Embedded) | Tool to perform common I-V tests quickly and easily without programming or installing software |
| Software Interface | TSP Express (Embedded), Direct GPIB/VISA, Read/Write with VB, VC/C++, VC#, LabVIEW, TestPoint, LabWindows/CVI, etc. |
| General | |
|---|---|
| USB | USB 2.1 Host Controller, supports external data storage |
| Contact Check | ±50 Ω |
| PC Interface | IEEE-488.1 and .2; LXI Class C Ethernet; RS-232 |
| Digital I/O Interface | Input/Output Pins: 14 open drain I/O bits, 5.25 V max |
| Power Supply | 100 V to 250 VAC, 50 Hz–60 Hz (auto sensing), 550 VA max |
| Cooling | Forced air. Side and top intake and rear exhaust |
| EMC | Conforms to European Union EMC Directive |
| Safety | ETL listed (PENDING). Conforms to European Union Low Voltage Directive |
| Warranty | 1 year |
| Dimensions (rack) | 89 mm high × 435 mm wide × 549 mm deep (3.5 in × 17.1 in × 21.6 in) |
| Dimensions (bench, with handle and feet) | 104 mm high × 483 mm wide × 620 mm deep (4.1 in × 19 in × 24.4 in) |
| Weight | 9.98 kg (22 lbs) |
| Environment | For indoor use only |
| Calibration Period | One year |
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
New
Manufacturer
Keithley
Volts
3 kV
Volts
180 W
Amps
20 mA
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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