When performance meets precision, the result is something truly extraordinary—UNI-T’s latest programmable linear DC power supply: the UDP4303S. Built for engineers, labs, R&D departments, and serious electronics professionals, this 4-channel powerhouse packs cutting-edge technology, intelligent design, and user-centric features into one compact unit.

Let’s dive into what makes the UDP4303S a standout choice and why it’s more than just another power supply—it’s a complete test and measurement solution.

🚀 Key Highlights at a Glance

• 4 Channels, Fully Isolated: No crosstalk. Total safety. Full flexibility for any connection configuration.

• 297 W Total Power with CH1/CH2: 32 V / 3 A, CH3: 15 V / 3 A, CH4: 6 V / 10 A

• 4.3” Color LCD Display with 6 interface styles for intuitive monitoring

• 1 μA Resolution in Low Current Mode

• 8 kSa/s High-Speed Sampling Rate

• Web Control & Remote Monitoring

• List & Delayer Programming – 512 Points with 1 ms Resolution

🔧 Engineering That Empowers

1. Full-Channel Isolation

The UDP4303S offers true four-channel electrical isolation—not just partial or front-end isolation. This allows users to configure channels in series or parallel without signal interference or risk of device damage, ensuring maximum safety and accurate output. Isolation without compromise is what sets this unit apart.

2. Low Current Precision at 1 μA

Few power supplies provide true 1 μA resolution on all channels. With UDP4303S, the ultra-fine current measurement capability enables precise control in sensitive electronic testing environments, including low-power IoT devices and semiconductor components.

3. Bleeder Circuit Control

Whether you're working with batteries or capacitive loads, you control the output decay. The integrated bleeder circuit ensures fast voltage drop when needed or holds charge for battery testing—flexibility that matters in real-world test environments.

4. Channel Tracking Function

Sync settings effortlessly between CH1 and CH2 with one-touch channel tracking. This smart feature enables fast, linked configuration changes when using symmetrical outputs, making it perfect for powering complex circuits or dual-supply analog systems.

5. Adjustable OCP Delay Time

Protection is critical—but smart protection is what sets the UDP4303S apart. Its user-configurable Overcurrent Protection delay (0ms–10s) allows you to avoid unnecessary shutdowns during inrush currents or power-on transients. No more false trips.

🖥 Smart Display & Control

The 4.3-inch true color LCD brings clarity to your workspace. Six display styles help users visualize voltage, current, power, and waveforms in the most intuitive way. And with front/rear output selection, rotary switch input, and numeric keypad control, it’s as user-friendly as it is powerful.

And yes, it’s remotely controllable—via RS232, USB, LAN, or even through a web browser without the need for dedicated software. Whether you're running automated tests or controlling it from across the lab, it’s built to keep up.

📈 Waveform Analysis, Recorder & Monitor

The UDP4303S isn't just a power source—it’s also a real-time monitoring and analysis tool. View and log waveform output, detect parameter deviations, and store results on USB or PC. With built-in list and delayer functions (512 steps), you can create complex output profiles for comprehensive product testing.

Set up conditions, save scenarios, and access them instantly through USB flash drive support. Efficient, repeatable, and precise—ideal for production testing or recurring validation tasks.

🎯 Designed for Engineers, by Engineers

Whether you're testing high-current circuits or delicate analog designs, the UDP4303S adapts to your needs. Its:

• Remote sense support on all channels

• Real-time monitoring with alarm alerts

• Waveform quality visualization

• Presets and saved setups

• Multi-level protection with OVP, OCP, OTP, and sense line safety

...all work together to ensure a safer, smarter, and more productive test environment.

📦 In the Box

Each UDP4303S comes complete with:

• USB Data Cable

• Standard Power Cord

• 5-PIN and 8-PIN terminal plugs

• Full documentation and software access

🔚 Conclusion: A New Standard in Bench Power Supplies

The UNI-T UDP4303S isn’t just packed with features—it’s purpose-built to solve real-world lab and production challenges. From multi-channel flexibility to ultra-low current precision, it delivers the tools engineers need to move faster, test smarter, and design with confidence.

Ready to upgrade your bench?