Siglent SPD3303C DC Power Supply, Triple Output, 2x 32V/3.2A, 2.5-5V/3.2A, SPD3000C Series

Siglent SPD3303C DC Power Supply

The Siglent SPD3303C Programmable Linear DC Power Supply is a versatile, user-friendly, and feature-rich power source designed for a wide range of applications. It features three independent output channels, including two fully adjustable outputs and one fixed-output channel with selectable voltages of 2.5 V, 3.3 V, or 5 V. The unit includes built-in short-circuit and overload protection to ensure safe operation and delivers a total power output of 220 W. Users can choose from independent, series, or parallel operating modes to meet different testing and development requirements. Offering value and performance, the SPD3303C is suitable for use in manufacturing, educational, and research environments.

Features

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

• 3 output modes: independent, series and parallel

• Color-coded binding posts on the front panel for easy lead access

• 4-digit voltage and 3-digit current resolution, adjustability of as low as 10 mV & 10 mA steps

• OCP mode, short-circuit, and overload protection to safeguard connected components

• LED display; 32 V full scale, 4 digits; 3.2 A full scale, 3 digits

• 100V / 120V / 220V / 230V (50/60Hz) compatible design to meet the needs of different power grids

• Supports panel timing output functions

• Series/ parallel/ independent mode functions

• Intelligent fan for temperature control, reduces noise

• 5 groups of internal system parameter storage and supports data storage space expansion

• Supports SCPI commands & USB device interface

• Front-panel key lock

• Automate from a PC, includes EasyPower software

Series / Parallel / Independent Output Modes

The series and parallel operating modes of the SPD3303C DC Supply allow two output channels to be combined into a single output, increasing available power by either doubling the output voltage or doubling the output current.

Each of the three output channels can be switched on or off individually, or all three channels can be enabled or disabled simultaneously for added convenience and control.

This feature is useful whenever a project requires higher voltage, higher current, or flexible power control than a single channel can provide.

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

• SPD3303C Power Supply

• USB Cable -1

• Quick Start -1

• Power cord -1

• Certificate of Calibration -1

Siglent SPD3303C DC Power Supply FAQ

1. Why choose the SPD3303C linear DC power supply compared to a switching DC supply?
   Linear power supplies (SPD), like the SPD3303C, 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 (10mV / 10mA), the color-display SPD3303X-E (10mV / 10mA), or the precision-oriented SPD3303X (1mV / 1mA). 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.