Designed for residential rooftop systems, the First Solar FS-6440A-P-B combines 440W power output with 17.46% efficiency in a Thin-Film form factor.

Thin-Film

First Solar FS-6440A-P-B

Name: First Solar FS-6440A-P-B
Brand: First Solar

Max Power

440W

Efficiency

17.46%

Operating V

184.7V

Warranty

25Y

Technical Specifications

📋 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-P-B?

This panel has 17.46% efficiency, which is standard for commercial solar panels.

What are the dimensions and weight of the First Solar FS-6440A-P-B?

It measures 2039 x 1236 x 35 mm and weighs 31.5kg.

What is the max power output of the First Solar FS-6440A-P-B?

The First Solar FS-6440A-P-B 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-P-B?

The FS-6440A-P-B comes with a 25-year product warranty covering defects and degradation.

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📊 Brand Context

First Solar offers 218 solar panel models from 67.5W to 550W.