The JA Solar JAM66D45 620LB is a high-efficiency 620W bifacial double-glass solar module engineered for utility-scale, commercial, and large-scale distributed solar applications. Built with advanced n-type Bycium+ half-cell technology and JA Solar’s DeepBlue 4.0 Pro platform, this module delivers outstanding energy generation, superior durability, and long-term reliability. Featuring 16BB MBB half-cell architecture and up to 23.0% module efficiency, the JAM66-620LB offers excellent low irradiance performance, reduced light-induced degradation (LID), and improved temperature coefficient performance for increased energy yield in demanding environments. The bifacial double-glass construction enables rear-side energy gain, improving total system production and lowering LCOE in ground-mount and reflective surface installations. Designed for 1500V systems and capable of handling high mechanical loads, this module is ideal for modern high-power solar arrays requiring long-term performance and reliability. The module also includes a 12-year product warranty and 30-year linear power output warranty for enhanced investment protection.

Key Features

• 620W n-type bifacial double-glass solar module

• Up to 23.0% module efficiency with DeepBlue 4.0 Pro technology

• Advanced 16BB MBB half-cell architecture for improved performance

• Excellent low irradiance response and low temperature coefficient

• 30-year linear power output warranty with bifacial energy gain