Agilent/Keysight E36104B

The Keysight E36104B is a 35 W single-output programmable DC power supply engineered for benchtop and system-level testing. This 2U, ¼-rack instrument delivers 0–35 V at 0–1 A with exceptional regulation and sub-millivolt noise performance, making it ideal for precision device characterization and low-current measurement down to 1 µA resolution.

Technical Specifications

Output Rating

• Maximum voltage: 35 V


• Maximum current: 1 A


• Maximum power: 35 W Voltage Programming Accuracy: ±(0.05% of output + 12 mV)

Current Programming Accuracy: ±(0.05% of output + 0.6 mA) Voltage Readback Accuracy: ±(0.05% of output + 8 mV)
Current Readback Accuracy: ±(0.05% of output + 0.5 mA) Output Ripple and Noise (20 Hz to 20 MHz)

• Voltage RMS: 1.2 mV


• Voltage peak-to-peak: 20 mV


• Current RMS: 400 µA Load Regulation


• Voltage: < 0.01% + 6 mV


• Current: < 0.02% + 50 µA Line Regulation (47–63 Hz)


• Voltage: < 0.01% + 4 mV


• Current: < 0.02% + 50 µA

Key Features

• Low-current resolution to 1 µA for small-power device testing


• Transient response faster than 50 µs with command processing under 10 ms


• Integrated overvoltage, overcurrent, and overtemperature protection


• High-contrast OLED display with intuitive menu navigation, rotary knob, and keypad control


• Front panel lock prevents accidental setting changes during active tests


• AC input configurable for 100, 115, or 230 VAC (±10%); maximum power consumption 200 VA

Typical Applications Precision circuit validation, semiconductor characterization, low-power device testing, and laboratory measurements requiring stable, low-noise DC sourcing with integrated safeguards.

Compatibility & Integration LAN (LXI Core) and USB (TMC488) interfaces support SCPI commands, IVI drivers, web-based control, Keysight IO Libraries Suite, and BenchVue app integration. Member of the E36100B Series and direct drop-in replacement for the E36104A. Operating temperature range: 0 °C to 40 °C. Dimensions: 89–102 mm (H) × 106 mm (W) × 339–365 mm (D); weight approximately 3.6–3.7 kg.