Keysight N6751A 50 V, 5 A, 50 W High-Performance Autoranging DC Power Module

Key Features At A Glance

• 1U-high modular mainframe holds 1 to 4 DC power modules for up to four outputs in a single rack unit
• Mix and match from over 30 DC power and electronic load modules spanning 50 W to 500 W and voltages up to 150 V
• GPIB, USB 2.0, and 10/100/1000 Base-T Ethernet LAN standard; fully compliant to the LXI Class C specification, with a built-in web server
• SCPI / IEEE 488.2 programming with VXIplug&play and IVI-COM drivers for ATE integration
• Built-in voltage and current measurement standard on every module to simplify ATE wiring
• 4-wire remote sensing and programmable voltage slew rate on each output
• Per-module over-voltage, over-current, and over-temperature protection with 10 µs cross-module fault detection
• Each module output fully isolated and floating from ground and from one another
• Mainframes available in 400 W, 600 W, and 1200 W total-output-power tiers
• Universal 100–240 VAC input (50/60/400 Hz) with power factor correction
• Programmable voltage slew, output sequencing, and series/parallel virtual-channel operation
• Optional High-Speed Test Extensions add LIST sequencing and digitizing (standard on precision, SMU, and load modules)

The Keysight N6751A is a high-performance autoranging DC power module rated at 50 V, 5 A, and 50 W, part of the Keysight N6700 Low-Profile Modular Power System (MPS) — a 1U-high, multiple-output programmable DC power supply and electronic load system that lets test system integrators optimize performance, power, and price to match their test needs. Built on an advanced switching power supply design that fits within 1U of rack space, a single mainframe holds one to four DC power modules, and the system lets you mix and match from over 30 different DC power and electronic load modules to create a 1- to 4-channel DC power system tailored to specific test requirements. Test system engineers can invest in high-performance outputs where speed and accuracy are needed, or choose basic performance outputs for simple DC power requirements, with electronic load modules available for power supply testing. As an autoranging high-performance module, the N6751A delivers maximum power across a range of voltage and current combinations.

The N6700 MPS is designed for automatic test equipment (ATE) systems in R&D, design validation, and manufacturing, where designers must reduce the rack space occupied by multiple supplies or loads while increasing test system throughput. Power supplies and electronic loads of this kind are a fundamental component of test systems across aerospace and defense, consumer electronics, computers and peripherals, communications, semiconductor, and automotive electronics. Within the family, precision modules are suited to semiconductor and passive device testing where a precisely controlled output and highly accurate measurements are needed, while the source/measure unit modules support applications such as battery drain analysis, optimizing power consumption and maximizing battery life of battery-powered devices, and functional test.

The same N6700-series modules also run at the heart of the Keysight N6705C DC Power Analyzer, a mainframe that sources and measures DC voltage and current into a device under test. The N6705C combines one to four DC power supply or electronic load modules with the functions of a DMM, an oscilloscope, an arbitrary waveform generator, and a data logger in a single integrated instrument, presenting all sourcing, loading, and measurement functions directly from the front panel without requiring any programming. Intended for R&D testing and design validation, it lets an engineer set up and view turn-on/turn-off sequences, measure and display voltage and current versus time to visualize power into the DUT, control bias-supply or electronic-load ramp-up and ramp-down rates, generate DC bias transients and disturbances as arbitrary waveforms, and log current and power consumption over seconds, minutes, hours, or days to capture anomalies. A common task is inrush current measurement: triggering the integrated oscilloscope on the DC output's on/off key in single-shot mode captures the current flowing into the DUT as the output turns on. Because it is fully programmable and LXI Class C certified, the N6705C also serves ATE systems for test development, DUT troubleshooting, and visualizing results as tests execute, allowing test correlation between bench and manufacturing setups.

ValueTronics stocks and holds its own test and measurement inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Holding inventory under our own roof lets us confirm configuration and condition directly, inspect and functionally verify each used unit in-house before it ships, and get equipment quickly to the engineers, labs, and production teams who rely on us.

Brand Heritage

Keysight Technologies traces its measurement heritage to Hewlett-Packard, whose test and measurement business was spun off as Agilent Technologies in 1999. Agilent's electronic measurement division was then established as Keysight Technologies in 2014, the brand under which this product line is offered today.

Compare Other Models in This Series

The N6700 Modular Power System is a family built around a 1U mainframe and an extensive catalog of interchangeable DC power and electronic load modules. Rather than a fixed instrument, it gives test system designers the flexibility to mix and match from over 30 different modules to create a 1- to 4-channel DC power system optimized to meet specific test requirements — investing in high-performance outputs where speed and accuracy are needed, and basic outputs for simple DC power requirements. Module capability depends not only on the module's own hardware but also on the mainframe in which it is installed: modules placed in an N6705C DC Power Analyzer gain front-panel scope view, arbitrary waveform generation, and data logging that are not present in the lower-profile N6700-series mainframes.

The catalog organizes modules into distinct series: basic DC power modules (the N6730, N6740, and N6770 ranges), high-performance autoranging modules (N6750 series), precision modules (N6760 series), source/measure units (N6780 series), application-specific modules (N6783A), and DC electronic loads (N6790 series). Mainframes are available in 400 W, 600 W, and 1200 W tiers. Each module occupies one mainframe slot, except the double-wide N6753A–N6756A, N6763A–N6766A, N6785A–N6786A, and N6792A, which each occupy two of the four slots.

The N6705C is the mainframe-plus-modules configuration: you order the N6705C mainframe and choose one to four modules separately, then assemble the system yourself. The N6715C is the build-to-order version shipped fully assembled with one to four modules pre-installed. Both share 600 W of total available mainframe power and the same module catalog. The N6705C provides four module slots, front-panel binding posts rated 20 A per post, 4 gigabytes of internal non-volatile storage, a built-in real-time clock, and power management that allocates mainframe power to the outputs that need it.

Each new model linked below is its own dedicated product page with condition-matched pricing. Select the specific mainframe or module that fits your configuration to see its availability and price.

Across the mainframes, output sequencing can be synchronized between multiple units by wiring the rear-panel I/O ports together — a capability supported on the N6700B, N6701A, and N6702A mainframes. The N6702A 1200 W mainframe additionally senses the available AC line power at turn-on and automatically scales back output power to avoid overloading a standard AC outlet, limiting output to 600 W so a high-power mainframe can be plugged into any standard outlet.

The models differ primarily in mainframe power and in module output ratings and performance class. Mainframes provide 400 W (N6700B), 600 W (N6701A), or 1200 W (N6702A) of total available output power, and modules are rated at 50 W, 100 W, 300 W, or 500 W with output voltages ranging from 5 V up to 150 V depending on the module. Basic DC power modules cover 50 W, 100 W, and 300 W outputs up to 150 V and up to 20 A; high-performance autoranging and precision modules span 50 W to 500 W up to 60 V and up to 50 A and add autoranging output that delivers maximum power across a range of voltage and current combinations; application-specific source/measure units provide up to 80 W with two- or four-quadrant operation; and the N6790 electronic loads offer 100 W and 200 W modules (up to 60 V and 40 A) with constant voltage, current, resistance, and power modes and programmable slew rates. The comparison table below details each model's output ratings and key performance specifications.

Performance class also separates the series: basic modules cover programmable DC power with standard voltage and current measurement; high-performance autoranging and precision modules add autoranging output capability, and the precision series adds low voltage and current ranges with precision measurement and simultaneous voltage-and-current digitizing. High-Speed Test Extensions, output disconnect relays (option 761), and output disconnect/polarity reversal relays (option 760) are available according to each module's row in the options table; High-Speed Test Extensions are optional (option 054) on the basic, high-performance, and 300 W modules and standard on the precision, SMU, application-specific, and load modules — consult the comparison table for which functions each model includes.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

When installed in an N6705C DC Power Analyzer, the modules add a built-in digitizer running to 200 kHz with up to 256 k samples per trace (512 k via SCPI) and approximately 30 kHz of measurement bandwidth, capturing voltage- and current-vs-time with logging to internal or USB storage. The full N6700 family spec table below lists each module's output ratings and key performance specifications side by side.

Important: The DC power and electronic load modules (N6731B–N6792A) are not standalone instruments; they require an N6700B/N6701A/N6702A or N6700C/N6701C/N6702C mainframe, or an N6705C DC Power Analyzer (or N6710C/N6711C/N6712C build-to-order system), sold separately, to operate.

Important: Installing one of the 500 W modules in a 400 W mainframe (such as the N6700B or N6700C) may prevent that module from running at its full rated output power.

Important: When configuring a mainframe with fewer than four filled module slots, you MUST order a filler panel kit (N6708A); each kit contains three filler panels, and every empty module slot must be filled with a filler panel for proper operation.

Important: If you will be rack mounting the N6700, you MUST order the rack mount kit (N6709A for the N6700A/B series, N6709C for the N6700C series); standard rack rails or slides are not compatible with the N6700 because of its 1U size and airflow requirements.

Important: For models N6712A and N6712C, the maximum output power is limited to 600 W at 100 VAC; to achieve full output power of 1200 W you must use option 929 and operate at 200 VAC.

Important: When the N6702A / N6702C 1200 W mainframe is plugged into a standard AC outlet, it senses the available AC line power at turn-on and automatically limits output power to 600 W to prevent overloading the AC line. For the N6702C, an AC mains rated at 100–180 VAC cannot supply enough current to power the mainframe at its full rated power; internal circuits limit the module power to 600 W maximum at that input.

Important: Output current is limited on some modules when option 760 (Output Disconnect/Polarity Reversal Relays) is installed; option 760 limits output current to 10 A maximum on models N6742B and N6773A, and is not available on models N6741B, N6751A, N6752A, N6761A, N6762A, and N6781A–N6786A.

Important: Output disconnect relays (option 761) provide output and sense disconnect; option 760 adds output disconnect with polarity reversal.

Important: Option 2UA (200 µA measurement range) is available only on Models N6761A and N6762A.

Important: Multi-mainframe output sequencing synchronization is supported on the N6700B, N6701A, and N6702A mainframes; it is not supported on the discontinued N6700A mainframe.

Important: Front-panel binding posts are rated for 20 A per post; modules rated above 20 A, such as the N6753A or N6792A, require high-current wiring routed through the rear panel.

Important: Each module occupies one module slot, except for the N6753A–N6756A, N6763A–N6766A, N6785A–N6786A and N6792A, which each occupy two module slots.

Important: The N6705C / N6715C mainframe has four module slots and provides 600 W total available output power; modules are ordered separately and at least one module is required for the DC power analyzer to operate. If the sum of the installed modules' power exceeds the mainframe's available output power, use Keysight's power management capability to allocate mainframe power to the outputs where it is needed.

Important: Arbitrary waveform generation, scope view, and the related N6705 oscilloscope measurement capabilities apply only when the power modules are installed in a Keysight N6705 DC Power Analyzer.

Important: Output current is derated 1% per °C above 40 °C ambient temperature.

Important: Output terminal isolation: no output terminal may be more than ±240 VDC from any other terminal or chassis ground. The maximum series operation is 240 V; the maximum rated parallel operation is 100 A per N6705 mainframe.

Important: The Keysight N6791A and N6792A Electronic Load Modules are not supported on the previous Keysight mainframes N6700B, N6701A, N6702A, N6705A, and N6705B.

Important: Keysight N6783A modules cannot be used in series with other N6783A modules or any other N67xx module.

Important: When sinking power, Model N6784A can operate at the maximum rated output power for only a limited time; when the internal temperature exceeds its safe limit, the output latches off and a protect clear is required to resume operation.

Important: In the DC power module specification table, values for the N6761A–N6766A precision modules and the N6781A/N6782A/N6784A/N6785A/N6786A SMU and N6783A application-specific modules are shown for the highest output/measurement range (these modules have multiple output and measurement ranges); the N6783A-BAT and N6783A-MFG values are shown for the highest measurement range.

Important: This data sheet does not include a comprehensive list of all power module specifications and characteristics; complete performance specifications and supplemental characteristics for all power modules are in the Keysight N6700 Modular Power System Family Specifications Guide, part number N6700-90001.

Recommended pairing: add the BV9200B PathWave BenchVue Advanced Power Control and Analysis Software (or the 14585A Control and Analysis Software) to control the family's DC power and electronic load modules in up to four mainframes — as many as 16 installed modules — from a single PC.

About this Pre-Owned unit

This is a Pre-Owned (used) unit. Every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. For the exact configuration, available options, included accessories, calibration status, or current lead time for your application, our Test Architects can confirm the details before you order.

ValueTronics supplies both new and used test and measurement equipment, and we stock and hold our own inventory under our own roof. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

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.