Siglent SDL1020X-E
A programmable load with every interface built in, for labs that automate power-supply and battery tests.
Amazon $574$574
The Siglent SDL1020X-E rates 4.0 among electronic loads bench power supplys; the Siglent SPD3303X-E rates 3.6 among multi-output ones. The Siglent SPD3303X-E costs $115 less ($459 vs $574).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Siglent SPD3303X-E
#3 in Multi-outputFull review
A quiet triple-output linear supply for electronics labs that power analog and logic rails at once.
Amazon $459$459
Scores side by side
These two sit in different type classes (electronic loads and multi-output), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Siglent SDL1020X-E | Siglent SPD3303X-E |
|---|---|---|
| Overall rating | 4.0/5 | 3.6/5 |
| Value 25% | 16 $2.87 per watt ($574, 200 W rated) | 25 $2.09 per watt ($459, 220 W rated) |
| Output quality 20% | 95 25 kHz dynamic mode | 96 0.3 mVrms ripple and noise |
| Resolution 15% | 75 1 mV / 1 mA setting resolution | 25 10 mV / 10 mA setting resolution |
| PC control 15% | 100 USB, RS232, LAN with SCPI | 100 USB, LAN with SCPI |
| Protection & features 10% | 80 over-voltage protection, over-current protection, remote sense | 20 stored setups |
| Warranty 15% | 100 3-year warranty | 100 3-year warranty |
Specifications
| Siglent SDL1020X-E | Siglent SPD3303X-E | |
|---|---|---|
| Output | ||
| Type | Electronic load | Power supply |
| Regulation | - | Linear |
| Channels | 1 | 3 |
| Channel ratings | 150 V/30 A, 200 W | 32 V/3.2 A, 32 V/3.2 A, 2.5/3.3/5 V/3.2 A |
| Max voltage | 150 V | 32 V |
| Max current | 30 A | 3.2 A |
| Rated power | 200 W | 220 W |
| Ripple and noise | - | 0.3 mVrms |
| Dynamic mode | 25 kHz | - |
| Load modes | CC, CV, CR, CP | - |
| Precision | ||
| Setting resolution | 1 mV / 1 mA | 10 mV / 10 mA |
| Readback resolution | 1 mV / 1 mA | 10 mV / 10 mA |
| Remote sense | Yes | - |
| Control | ||
| PC interfaces | USB, RS232, LAN, analog remote | USB, LAN |
| SCPI | Yes | Yes |
| Stored setups | - | 5 |
| Over-voltage protection | Yes | - |
| Over-current protection | Yes | - |
| Build | ||
| Weight | 12.8 lb | 17.6 lb |
| Warranty | 3 years | 3 years |