Siglent SPD3303X-E Linear DC 3CH programmable power supply
The Siglent SPD3303X-E is a high-performance, programmable DC power supply with a fine resolution of 10 mV for voltage and 10 mA for current, making it ideal for applications that demand precision. Designed for laboratories, R&D, and educational environments, it features three independent outputs (two adjustable up to 32 V / 3.2 A and one fixed 2.5 V / 3.3 V / 5 V) and delivers a total power of 220 W with advanced protection against overloads and short circuits.
Siglent SPD3303X-E Programmable DC Power Supply
The Siglent SPD3303X-E is a versatile, programmable linear DC power supply engineered for accuracy, reliability, and flexibility in modern test environments. With its compact design and intuitive interface, it is well suited for laboratories, production lines, research facilities, and educational institutions.
Performance and Flexibility
This model features three independent outputs, including two adjustable channels (0–32V/0–3.2A) and one fixed channel with selectable voltages of 2.5V, 3.3V, or 5V. Together, they provide a total power output of up to 220W. The outputs can be used independently, combined in series mode for higher voltage (up to 60V), or in parallel mode for higher current (up to 6.4A), ensuring maximum versatility for a wide range of applications.
The 4.3-inch TFT-LCD display offers crisp visualization of real-time parameters, including waveform monitoring of voltage and current, while digital readouts ensure accurate and immediate feedback during operation. Built-in constant voltage (CV) and constant current (CC) modes allow for stable and precise power delivery.
Applications of the SPD3303X-E
The SPD3303X-E is a true workhorse that adapts easily to a wide variety of applications, making it ideal for:
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Electronics Development & R&D:
Engineers can power prototypes and circuits with stable, precise voltages, testing behavior under different load conditions. -
Education & Training:
With its intuitive interface and built-in safety features, the SPD3303X-E is an excellent tool for laboratories in universities and technical schools, providing students with hands-on experience in power supply operation. -
Manufacturing & Production Testing:
The multiple outputs and programmable settings make it a reliable solution for powering and testing electronic components, boards, and devices in quality control environments. -
Embedded Systems & Microcontroller Projects:
The selectable 2.5V, 3.3V, and 5V fixed channel is perfectly suited for powering digital circuits, logic devices, and microcontrollers that require standard low-voltage supplies. -
Communications and IoT Devices:
Series and parallel modes allow engineers to test equipment requiring higher voltages or higher currents, such as wireless modules, routers, and IoT hardware. -
Battery Simulation and Charging:
By operating in constant current or voltage mode, the SPD3303X-E can simulate charging and discharging conditions for battery-operated systems.
Why Choose the SPD3303X-E?
The Siglent SPD3303X-E combines precision, user-friendly design, and advanced functionality at an affordable price point. Whether you are a professional engineer, educator, or electronics hobbyist, this power supply delivers the features and flexibility needed for a wide range of tasks.
Series Output Mode
Series/parallel/independent mode functions
Series and parallel functions allows 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.
Parallel Output Mode
Series/parallel/independent mode functions
Series and parallel functions allows 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.
Why Choose the SPD3303X-E?
The Siglent SPD3303X-E combines precision, user-friendly design, and advanced functionality at an affordable price point. Whether you are a professional engineer, educator, or electronics hobbyist, this power supply delivers the features and flexibility needed for a wide range of tasks.
Key Features:
- 100/120/220/230 V compatible design to meet the needs of different power grids
- Intelligent temperature-controlled fan effectively reduces fan noise
- Clear graphical interface, with waveform display function
- Five internal groups of system parameter save/recall, supports data storage space expansion
- Free PC software; Easypower. Also supports remote programming and includes a LabView driver
Panel Timing Output
Panel displays the timing output
Through front panel operation, five groups of timing settings and output control can be displayed, which provides users with simple power programming functionality. Also, by connection to Siglent’s EasyPower PC software, a full range of communication and control features can be used.
Advanced Functions
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Timer Function: Enables automated sequences with adjustable time intervals for long-term or repetitive testing.
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Save & Recall: Store up to five user-defined setups for quick access to frequently used configurations.
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Waveform Display: Monitor output voltage and current behavior in real time, which is especially useful for detecting fluctuations or load transients.
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Remote Control: Full PC connectivity through USB and LAN (USBTMC/VXI-11 protocols) for seamless integration into automated test systems.
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Protection Features: Built-in short circuit and overload protection safeguard both the device and connected equipment.
| Model Overview | SPD3303X-E |
|---|---|
| Channel Output |
CH1: Voltage 0 to 32 V, Current 0 to 3.2 A CH2: Voltage 0 to 32 V, Current 0 to 3.2 A CH3: Voltage 2.5 / 3.3 / 5.0 V, Current 3.2 A |
| Display | 4.3" color TFT-LCD 4 digit voltage display 3 digit current display |
| Resolution | Voltage: 10 mV Current: 10 mA |
| Setting Accuracy |
Voltage: ±(0.5% of reading + 2 digits) Current: ±(0.5% of reading + 2 digits) |
| Readback Accuracy |
Voltage: ±(0.5% of reading + 2 digits) Current: ±(0.5% of reading + 2 digits) |
| Total Power | Up to 220 W |
| Tracking Modes | Independent / Series / Parallel |
| Series Mode Rating | 0–60 V, 0–3.2 A (CH1+CH2) |
| Parallel Mode Rating | 0–32 V, 0–6.4 A (CH1∥CH2) |
| Protection | Short-circuit & overload protection; OCP |
| Functions | Timer output, storage/recall, real-time V/I waveform display |
| Interfaces | USBTMC & LAN (rear) |
| AC Input | 100/110/220/230 V ±10%, 50/60 Hz (rear DIP selection) |
Accessories Included with Siglent SPD3303X-E
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Power cord
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USB cable for PC connection
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Quick Start Guide (printed manual)
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Calibration certificate / warranty card
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Test leads (pair, for output connection)
