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Brand range: 67.5W–550W
Thin-Film
First Solar FS-6420A-P-x
Max Power
420W
Efficiency
16.67%
Operating V
179.3V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 218.1V |
| Short Circuit Current (Isc) | 2.53A |
| Voltage at Pmax (Vmp) | 179.3V |
| Current at Pmax (Imp) | 2.31A |
| Temp. Coefficient of Pmax | -0.307%/°C |
| Dimensions | 2039 x 1236 x 35 mm |
| Weight | 31.5kg |
| NOCT | 50.71°C |
| PTC Rating | 394.8W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 218 First Solar models in database
FAQ
What is the max power output of the First Solar FS-6420A-P-x?
The First Solar FS-6420A-P-x is rated at 420W under STC (1000 W/m², 25°C, AM 1.5).
How efficient is the First Solar FS-6420A-P-x?
This panel has 16.67% efficiency, which is standard for commercial solar panels.
How long is the warranty for the First Solar FS-6420A-P-x?
The FS-6420A-P-x comes with a 25-year product warranty covering defects and degradation.
What are the dimensions and weight of the First Solar FS-6420A-P-x?
It measures 2039 x 1236 x 35 mm and weighs 31.5kg.
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📊 Brand Context
First Solar offers 218 solar panel models from 67.5W to 550W.
Browse all First Solar models →