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Brand range: 165W–635W
Monocrystalline
JA Solar JAM54S31-390/MR
Max Power
390W
Efficiency
20.53%
Operating V
30.6V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 36.9V |
| Short Circuit Current (Isc) | 13.61A |
| Voltage at Pmax (Vmp) | 30.6V |
| Current at Pmax (Imp) | 12.73A |
| Temp. Coefficient of Pmax | -0.329%/°C |
| Dimensions | 1771 x 1073 x 35 mm |
| Weight | 23.8kg |
| NOCT | 46.24°C |
| PTC Rating | 369.5W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 312 JA Solar models in database
FAQ
What is the max power output of the JA Solar JAM54S31-390/MR?
The JA Solar JAM54S31-390/MR is rated at 390W under STC (1000 W/m², 25°C, AM 1.5).
How efficient is the JA Solar JAM54S31-390/MR?
This panel has 20.53% efficiency, which is above average for commercial solar panels.
How long is the warranty for the JA Solar JAM54S31-390/MR?
The JAM54S31-390/MR comes with a 25-year product warranty covering defects and degradation.
What are the dimensions and weight of the JA Solar JAM54S31-390/MR?
It measures 1771 x 1073 x 35 mm and weighs 23.8kg.
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📊 Brand Context
JA Solar offers 312 solar panel models from 165W to 635W.
Browse all JA Solar models →