Comprehensive review of the Siglent SPD3303X-E triple output power supply

Description

Features That Stand Out

Testing the Siglent SPD3303X-E Triple Output Power Supply was an experience that left me pleasantly surprised. This device packs three independent, controlled, and isolated outputs, making it one of the most versatile tools I’ve had on my workbench. The outputs include two at 32V/3.2A and one at 2.5V/3.3V/5V/3.2A, summing up to an impressive 220W of total power. Having this much flexibility in a single unit is a game-changer for anyone working on multi-voltage projects.

I found the output modes—Independent, Series, and Parallel— to be incredibly intuitive. Switching between them is seamless, and they are especially helpful when powering multiple devices simultaneously. The timing output function is another handy feature, allowing me to set precise intervals for voltage delivery. Whether for testing circuits or charging batteries, these features made every task more efficient.

Design and Build Quality

The power supply’s design is robust and functional, albeit not the most compact. At 17.6 pounds and measuring 16 x 14 x 11 inches, it’s not exactly portable, but it feels sturdy and reliable. The construction is solid, with a clean layout that makes the controls easy to navigate.

One of my favorite aspects is the intelligent temperature-controlled fan. It operates quietly, even under heavy loads. This noise reduction is a blessing, especially during long hours in the lab. The 10mV/10mA voltage resolution gives a sense of precision that’s often lacking in other devices at this level.

Ease of Use

Navigating the settings was a breeze. The Easy Power PC software simplifies control, and I found the support for SCPI commands to be a significant plus. As someone who uses LabVIEW regularly, the availability of a LabVIEW driver made integration into my workflow seamless. Adjusting voltage and current settings is straightforward, and the display provides clear feedback, avoiding any guesswork.

The inclusion of trending graphs is a highlight. They allow real-time monitoring of output changes, which is perfect for troubleshooting or analyzing circuit behavior. It’s a feature I didn’t realize I needed until I started using it.

Key Benefits

Using this power supply brought several key benefits to my daily work:

• Precision and Control: The fine voltage and current adjustments made it easy to work on sensitive electronics.
• Versatility: Three isolated outputs with multiple modes offer unmatched flexibility.
• Quiet Operation: The intelligent fan keeps noise to a minimum while maintaining optimal performance.

Areas of Concern

While the Siglent SPD3303X-E has a lot going for it, there are a few areas of concern that stood out:

• Size and Weight: At nearly 18 pounds, it’s not ideal for portable setups.
• Software Compatibility: While the Easy Power PC software is functional, it felt slightly outdated compared to modern interfaces.
• Price Point: Compared to basic power supplies, this model is a steeper investment, although its features justify the cost for advanced users.

Competing Products

In comparing this device to similar options, the Keysight E36312A comes to mind. Both offer multi-output functionality, but the Siglent model edges ahead with its intelligent fan and timing output features, which the Keysight lacks. On the other hand, Rigol DP832 is another competitor that rivals the Siglent in precision but falls short in maximum power output at just 195W.

For those who need portability over power, the Korad KA3305P is worth considering, though it sacrifices the independent output modes and advanced software integration found in the Siglent. Ultimately, the Siglent strikes a balance that caters well to professionals needing a reliable, multi-functional power supply.

Price Performance

In terms of price performance, the Siglent SPD3303X-E delivers excellent value. While it’s not the cheapest option, it justifies every dollar with its triple output capability, precise controls, and low noise operation. For professionals and serious hobbyists, this unit is a solid investment. If you’re on a tighter budget, there are simpler models available, but they can’t match the features and reliability offered here.

Testing this product has been a rewarding experience, and while it’s not without its quirks, the Siglent SPD3303X-E has earned its place as a reliable tool on my bench.

Additional information