🏭View all 218 First Solar models→
Brand range: 67.5W–550W
Thin-Film
First Solar FS-6420A
Max Power
420W
Efficiency
16.94%
Operating V
180.4V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 218.5V |
| Short Circuit Current (Isc) | 2.54A |
| Voltage at Pmax (Vmp) | 180.4V |
| Current at Pmax (Imp) | 2.33A |
| Temp. Coefficient of Pmax | -0.244%/°C |
| Dimensions | 2023 x 1226 x 35 mm |
| Weight | 31.0kg |
| NOCT | 49.64°C |
| PTC Rating | 400.8W |
📋 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?
The First Solar FS-6420A is rated at 420W under STC (1000 W/m², 25°C, AM 1.5).
How long is the warranty for the First Solar FS-6420A?
The FS-6420A comes with a 25-year product warranty covering defects and degradation.
How does temperature affect the First Solar FS-6420A?
With a temp coefficient of -0.244%/°C, it outperforms the industry average of -0.35 to -0.40%/°C.
How efficient is the First Solar FS-6420A?
This panel has 16.94% efficiency, which is standard for commercial solar panels.
Compare This Panel
Add this First Solar FS-6420A to compare specs side-by-side with other commercial solar panels.
📄 Download
Save this datasheet as PDF for offline reference.
Share
Advertisement
📊 Brand Context
First Solar offers 218 solar panel models from 67.5W to 550W.
Browse all First Solar models →