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Brand range: 310W–550W
Monocrystalline
Sinotec USA LLC STS-390P-54DD
Max Power
390W
Efficiency
20.1%
Operating V
30.9V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 36.8V |
| Short Circuit Current (Isc) | 13.34A |
| Voltage at Pmax (Vmp) | 30.9V |
| Current at Pmax (Imp) | 12.62A |
| Temp. Coefficient of Pmax | -0.364%/°C |
| Dimensions | 1789 x 1084 x 35 mm |
| Weight | 24.2kg |
| NOCT | 42.6°C |
| PTC Rating | 371.4W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 26 Sinotec USA LLC models in database
FAQ
How efficient is the Sinotec USA LLC STS-390P-54DD?
This panel has 20.1% efficiency, which is above average for commercial solar panels.
What are the dimensions and weight of the Sinotec USA LLC STS-390P-54DD?
It measures 1789 x 1084 x 35 mm and weighs 24.2kg.
What is the max power output of the Sinotec USA LLC STS-390P-54DD?
The Sinotec USA LLC STS-390P-54DD is rated at 390W under STC (1000 W/m², 25°C, AM 1.5).
How long is the warranty for the Sinotec USA LLC STS-390P-54DD?
The STS-390P-54DD comes with a 25-year product warranty covering defects and degradation.
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📊 Brand Context
Sinotec USA LLC offers 26 solar panel models from 310W to 550W.
Browse all Sinotec USA LLC models →