🏭View all 218 First Solar models→
Brand range: 67.5W–550W
Thin-Film
First Solar FS-6440A
Max Power
440W
Efficiency
17.78%
Operating V
184.7V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 220V |
| Short Circuit Current (Isc) | 2.55A |
| Voltage at Pmax (Vmp) | 184.7V |
| Current at Pmax (Imp) | 2.38A |
| Temp. Coefficient of Pmax | -0.22%/°C |
| Dimensions | 2021 x 1225 x 35 mm |
| Weight | 30.9kg |
| NOCT | 51°C |
| PTC Rating | 420.8W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 218 First Solar models in database
FAQ
How efficient is the First Solar FS-6440A?
This panel has 17.78% efficiency, which is standard for commercial solar panels.
What are the dimensions and weight of the First Solar FS-6440A?
It measures 2021 x 1225 x 35 mm and weighs 30.9kg.
What is the max power output of the First Solar FS-6440A?
The First Solar FS-6440A is rated at 440W under STC (1000 W/m², 25°C, AM 1.5).
How long is the warranty for the First Solar FS-6440A?
The FS-6440A comes with a 25-year product warranty covering defects and degradation.
Compare This Panel
Add this First Solar FS-6440A 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 →