# Siglent SPD3303C Programmable DC Power Supply

# Siglent SPD3303C Programmable DC Power Supply

## Key Features At A Glance

-   Triple output: dual 0–32 V / 0–3.2 A channels plus a fixed 2.5 V / 3.3 V / 5.0 V, 3.2 A channel
-   Series mode to 0–64 V and parallel mode to 0–6.4 A from the two main channels
-   Low output noise: ripple and noise ≤1 mVrms (5 Hz–1 MHz) in constant-voltage mode
-   Programmable via remote interface with USB connectivity for automated test setups
-   Setting resolution of 10 mV (voltage) and 10 mA (current)
-   Program and read-back accuracy of ±(0.5% of reading + 2 digits) for voltage and current
-   Four-digit voltmeter (32 V full scale) and three-digit ammeter (3.2 A full scale) LED displays
-   Output tracking with track error ≤0.5% + 10 mV of master at no load

The Siglent SPD3303C is a programmable DC power supply with three outputs. Two primary channels each deliver 0 to 32 V at 0 to 3.2 A, while a third channel provides selectable fixed rails of 2.5 V, 3.3 V, or 5.0 V at up to 3.2 A. Voltage and current on the main channels are set with 10 mV and 10 mA resolution and shown on dedicated LED meters.

A programmable DC power supply provides clean, regulated, and adjustable direct-current power to a device under test, with output values that can be set manually from the front panel or commanded remotely from a controller. Supplies of this type sit at the center of electronics development, production, and verification benches as the controlled power source for the circuit being evaluated.

ValueTronics supplies the SPD3303C from its own 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, where we stock and hold our inventory in-house. Holding our own stock and verifying used equipment hands-on means buyers get accurate condition information and dependable availability on the instruments they need.

## Product Core & Specifications

Specification

Value

Output Ratings

CH1/CH2 independent

0~32V , 0~3.2A

CH1/CH2 series

0~64V , 0~3.2A

CH1/CH2 parallel

0~32V , 0~6.4A

CH3

2.5V/3.3V/5.0V , 3.2A

Constant Voltage Mode

Line regulation

≤0.01%+3mV

Load regulation

≤0.01%+3mV

Ripple and noise

≤1mVrms (5Hz ~ 1MHz)

Recover time

≤50µs (50% load change, minimum load 0.5A)

Temperature coefficient

≤300ppm/°C

Constant Current Mode

Line regulation

≤0.2%+3mA

Load regulation

≤0.2%+3mA

Ripple and noise

≤3mArms

CH3

Line Regulation

≤0.01%+3mV

Load Regulation

≤0.01%+3mV

Ripple and noise

≤1mVrms (5Hz ~ 1MHz)

Tracking Operation

Track error

≤0.5%+10mV of Master (No Load)

Parallel Mode Line Regulation

≤0.01%+3mV

Parallel Mode Load Regulation

≤0.01%+3mV

Series Mode Line Regulation

≤0.01%+5mV

Series Mode Load Regulation

≤300mV

Resolution

Voltage

10mV

Current

10mA

Display

Ammeter

3.2A full scale, 3 digits LED display

Voltmeter

32V full scale, 4 digits LED display

Accuracy

Program accuracy (Voltage)

± (0.5% of reading + 2 digits)

Program accuracy (Current)

± (0.5% of reading + 2 digits)

Readback accuracy (Voltage)

± (0.5% of reading + 2 digits)

Readback accuracy (Current)

± (0.5% of reading + 2 digits)

Insulation

Case to terminal

20MΩ or above (DC 500V)

Case to AC line

30MΩ or above (DC 500V)

Operating environment

Location

Indoor

Elevation

≤2000 m

Environment temperature

0 ~ 40°C

Relative humidity

≤80%

Installation level

II

Pollution level

2

Storage environment

Environment temperature

\-10 ~ 70°C

Relative humidity

≤70%

General

Power supply

AC 100V/120V/220V/230V±10%, 50/60Hz

Size

275mm x 225mm x 136mm

Weight

7.5kg

> **Important:** Published specifications apply after a minimum 30-minute warm-up with the ambient temperature between 18 °C and 28 °C.

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

**Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.**

## Details

- **Price:** 344.0 USD
- **Vendor:** Siglent
- **Type:** DC SUPPLY
- **Tags:** DC Power Supply, Dc Supply, Factory New, LTD., Manufacturers, Model 3303, product_manual_group_3, Product_new, Siglent, SIGLENT TECHNOLOGIES CO., SPD3303, SPD3303C

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 344.00 USD | In stock |

## Images

- SPD3303C Siglent DC Power Supply

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> Source: [ValueTronics](https://valuetronics.com/products/spd3303c-siglent-dc-power-supply-new)
> Updated: 2026-06-03