Siglent SPD3303X DC Power Supply, Triple Output, 2x 32V/3.2A, 2.5-5V/3.2A, 1mV, SPD3000X Series

SPD3303X Programmable DC Power Supply

The Siglent SPD3303X is a programmable DC power supply designed for use in electronics testing and development. It features three independent output channels—two adjustable channels offering up to 32 V and 3.2 A, and one fixed channel with selectable voltages of 2.5 V, 3.3 V, or 5 V. With a total output power of 220 W, the SPD3303X supports multiple output modes including independent, series, and parallel configurations, making it suitable for a wide range of applications. Its 4.3-inch color LCD provides clear, real-time waveform displays and detailed voltage/current readouts. The unit also includes advanced features like timing output programming, overvoltage and overcurrent protection, and remote control via SCPI commands or PC software. These capabilities make it an excellent choice for R&D labs, educational environments, and production testing setups.

Features and Specifications

• 3 independent controlled and isolated output,
  32V/3.2A×2, 2.5V/3.3V/5V/3.2A×1, total 220W

• 5 digits Voltage, 4 digits Current Display,
  Minimum Resolution: 1mV/1mA

• Supports panel timing output functions

• 4.3-inch true color TFT- LCD 480x272 display

• 3 types of output modes: independent, series, parallel

• 100V/120V/220V/230V compatible design to meet the needs of different power grids.

• Intelligent temperature-controlled fan , effectively reducing noise

• Clear graphical interface, with the waveform display function

• Internal 5 groups of system parameter save/recall, supports data storage space expansion

• Provides PC software: EasyPower, supports SCPI

• Supports remote programming and includes a LabView driver

Series / Parallel / Independent Mode Function

Series and parallel functions allow for combining two channels into one output with more power output capability, extending the application range. Each of 3 channels power can be turned on or off independently and also can be turned all on or all off.

High-Resolution and High-Precision Output

The highest resolution of 1mV/1mA(SPD3303X), provides excellent setting and read back accuracy. This ensures accurate output even with very with small changes in voltage or current. This is impossible for a low resolution power supply.

Panel Displays the Timing Output

Using the front panel, users can view and manage up to five groups of timing and output settings, offering a straightforward way to program power delivery. Additionally, the unit supports connectivity with Siglent’s EasyPower PC software, enabling comprehensive communication and remote control capabilities.

Save / Recall Setting Parameters / PC Timer

SPD3000X series programmable power supply can save or recall 5 groups of setting parameter in internal storage, also supports external storage expansion. You can easily obtain the settings you needed.

The SPD3303C / SPD3303X Series DC Power Supplies

SPD3303C and X Series Linear Programmable DC Power Supplies support programmability and real-time wave display, bringing a new experience to users. It has three isolated outputs: two adjustable channels and one selectable channel from 2.5v, 3.3V, and 5V. It also has output short and overload protect function, and can be used in production and development.

What's in the Box

• SPD3303X DC Power Supply

• USB Cable -1

• Quick Start -1

• Calibration Certificate - 1

• Power cord -1

• Output Test Cord -2 Sets

Siglent SPD3303X DC Power Supply FAQ

1. Why choose the SPD3303X linear DC power supply compared to a switching DC supply?
   Linear power supplies (SPD), like the SPD3303X, provide exceptionally low noise and ripple, along with highly accurate and stable output, making them well suited for sensitive analog circuits, RF applications, and laboratory testing. However, they generally offer lower maximum power output. In contrast, switching power supplies (SPS) deliver much higher power density and efficiency, with wide-range constant-power operation of up to 1500 W, making them ideal for high-power applications, production testing, and demanding industrial environments.

2. What is the difference between the C, X, and X-E models in the SPD3000C and X Series?
   These models differ primarily in their display and connectivity features. Choose from the value-focused SPD3303C, the color-display SPD3303X-E (10 mV / 10 mA), or the precision-oriented SPD3303X (1 mV / 1 mA). Every model provides three output channels, including two variable 0-32 V/3.2 A channels and a fixed 2.5 V/3.3 V/5 V logic rail, with 220 W of available power and support for series and parallel configurations.

3. How do the series and parallel output modes work in the SPD3000C and X series of DC supplies?
   Series mode combines CH1 and CH2 to increase the available voltage. Parallel mode combines CH1 and CH2 to increase the available current. Independent mode allows each channel to operate separately with its own settings.