Siglent SPD1168X
#2 in Single outputFull review
The low-voltage, higher-current sibling of the SPD1305X, for 12 V and 5 V work that needs clean, precise power.
Amazon $305$305
16 V / 8 A128 W1
3.2/5
A small programmable 30 V, 5 A supply for electronics hobbyists who want PC control in a compact box.
- 30 V / 5 AOutput
- 150 WPower
- SwitchingType
- USBPC control
Check price at Amazon$119.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Small and light at 3.3 lb
- USB control with SCPI commands
- Settable over-voltage and over-current trips
Cons
- Only 150 W, and the SPE6103 gives twice the power for a little more
- No published warranty
The OWON SPE family
Every OWON SPE model we rank, smallest first. Ratings compare each against its own type.
| Model | Output | Rating | Price |
|---|---|---|---|
| OWON SPE3051 (this one) | 30 V / 5 A | 3.2/5 | $119.99 |
| OWON SPE6103 | 60 V / 10 A | 3.3/5 | $139.99 |
| OWON SPE8105 | 80 V / 10 A | 3.1/5 | $219 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | SPE3051 |
|---|---|
| Output | |
| Type | Power supply |
| Regulation | Switching |
| Channels | 1 |
| Channel ratings | 30 V/5 A |
| Max voltage | 30 V |
| Max current | 5 A |
| Rated power | 150 W |
| Ripple and noise | 3 mVrms / 30 mVp-p |
| Precision | |
| Setting resolution | 10 mV / 1 mA |
| Readback resolution | 10 mV / 1 mA |
| Control | |
| PC interfaces | USB |
| SCPI | Yes |
| Stored setups | 4 |
| Over-voltage protection | Yes |
| Over-current protection | Yes |
| Build | |
| Weight | 3.3 lb |
Alternatives in this type
OWON SPE6103
#3 in Single outputFull review
A compact, programmable 60 V switching supply that gives a lot of range for the money on a crowded bench.
Amazon $139.99$139.99
60 V / 10 A300 W1
OWON SPE8105
#5 in Single outputFull review
A compact high-voltage switcher for e-bike, solar and battery projects that need more than 60 V.
Amazon $219$219
80 V / 10 A500 W1
Compare
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