Rohde & Schwarz NGU401-G Source Measure Unit

Overview

The Rohde & Schwarz NGU401-G is a four-quadrant source measure unit (SMU) designed for advanced semiconductor testing and general-purpose power supply applications. With 60W output power, ±20V/8A capability, and an acquisition rate of 500 ksample/s, it enables precise characterization of devices ranging from extremely low power consumption in sleep mode to high currents in the ampere range. Its short recovery times of less than 30 μs allow it to handle fast load changes typical in mobile communications and IoT devices.

Key Features

• Four-quadrant operation: acts as both source and sink with positive or negative voltages
• 60W output and sink power
• Voltage output: ±20V; current capability up to ±8A (≤6V) or ±3A (>6V)
• High-speed data acquisition: 500 ksample/s with 2 μs resolution (FastLog function)
• Voltage priority and current priority modes for optimized regulation
• High-capacitance mode to compensate for input capacitance
• Fast load regulation with <30 μs recovery time
• Measurement resolution up to 6½ digits
• Galvanically isolated floating channels
• USB, LAN, and GPIB interfaces

Applications

• Semiconductor device characterization and testing
• Mobile device power profiling (sleep-to-transmit mode transitions)
• IoT and Bluetooth low energy device testing
• LED and power efficiency measurements
• Bipolar power supply or electronic load applications