Siglent Technologies SPD3303C DC Power Supply




Key features
- •Triple output 220 watts
- •0-32V / 0-3.2A x 2. 2.2, 3.3, 5V / 3.2A
- •Four displays. Voltage and current readout for Ch1 & Ch2
- •Output modes: series, independent, parallel
- •Usb interface. Easy power software included.Two sets of adjustable voltage and a fixed set of selectable voltages
BrandSiglent Technologies
CategoryPower Meters
Siglent Technologies SPD3303C DC Power Supply
List Price: $420.50$378.45DEALYou Save: $42.05 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (4)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers3.5
out of 5
Based on 2 reviews
5★
50%
4★
0%
3★
0%
2★
50%
1★
0%
Only 2 of the 3 channels worked.
Matthew McCallum•February 23, 2017
Pros:
Channel 1 and 3 work, and are within 10mV of my bench multimeter. The display always showed the programmed output voltage for channel 1, and the ammeter would show current used and I could set the current limit just fine.
Cons:
Channel 2 did not work well on the first unit I received. It consistently outputs about 0.62 volts less than the display shows. Also, as soon as channel 2 is enabled, the display for channel 2 resets to 0.00V. It won't show the programmed output voltage for more than about a second after changing - it quickly returns to 0.00V, unlike channel 1 which always shows the programmed output voltage.
When combining the channels using the "ser" setting (for series output), the combined voltage range is 0-60V. Great. Except the display reads about 5/8 volts less than the unit actually outputs. For example, when I selected a 7 volt output with series mode, my bench meter registered around 16 volts.
I'll post an updated review when I receive the replacement power supply. For now, I'd avoid this unit. Hopefully the replacement works.
Channel 1 and 3 work, and are within 10mV of my bench multimeter. The display always showed the programmed output voltage for channel 1, and the ammeter would show current used and I could set the current limit just fine.
Cons:
Channel 2 did not work well on the first unit I received. It consistently outputs about 0.62 volts less than the display shows. Also, as soon as channel 2 is enabled, the display for channel 2 resets to 0.00V. It won't show the programmed output voltage for more than about a second after changing - it quickly returns to 0.00V, unlike channel 1 which always shows the programmed output voltage.
When combining the channels using the "ser" setting (for series output), the combined voltage range is 0-60V. Great. Except the display reads about 5/8 volts less than the unit actually outputs. For example, when I selected a 7 volt output with series mode, my bench meter registered around 16 volts.
I'll post an updated review when I receive the replacement power supply. For now, I'd avoid this unit. Hopefully the replacement works.
Money well spent
William Verstelle•January 30, 2017
Works great, great supply and I love it.







