JA Solar N‑Type 620 W Bifacial Solar Panel

The JA Solar DeepBlue 4.0 620 W bifacial panel delivers exceptional performance using N-type monocrystalline cells. With industry-leading efficiency of up to 22.2%, it maximizes energy output per square meter — making it ideal for utility-scale, commercial, or large rooftop installations.

Bifacial Design for More Energy
Thanks to its bifacial configuration, this module captures sunlight from both the front and rear surfaces, increasing yield on reflective surfaces (e.g., gravel, concrete, or white roofing) or in optimized ground-mount setups.

Robust Double-Glass Construction
Built with 2.0 mm tempered glass on both sides, this panel offers superior durability, excellent mechanical strength, and high resistance to environmental stresses ensuring long-term reliability even in demanding applications. 

Optimized Electrical Performance

• Rated Maximum Power (Pₘₐₓ): 620 W. 

• Open-Circuit Voltage (Vₒc): ~ 55.34 V 

• Maximum Power Voltage (Vₘₚₚ): 46.20 V for this power class. 

• Maximum Power Current (Iₘₚₚ): approx 13.42 A. 

• Power Tolerance: 0 to +5 W, giving a reliable upward power variation.

Mechanical and Build Specifications

• Dimensions: 2,465 mm × 1,134 mm × 35 mm (± tolerances) 

• Weight: 34.6 kg, relatively heavy but expected for a high-power double-glass module. 

• Cell count: 156 (6 × 26). 

• Junction Box: IP68 rated with 3 bypass diodes, enhancing resilience under partial shading. 

• Connector: QC 4.10-351 / MC4-EVO2A; Cable cross-section: 4 mm² (IEC) / 12 AWG (UL). 

Durability & Warranty

• 12-year product warranty. 

• Linear power warranty: 1% first-year degradation, ~0.4% annual degradation over 30 years. 

• Certified for reliability under tough conditions: IEC 61215, IEC 61730, UL standards, etc. 

Temperature & Environmental Performance

• Operating temperature range: –40°C to +85°C. 

• Temperature coefficient: –0.3%/°C (Pmax), –0.26%/°C (Voc), showing good stability in high-heat environments. 

Safety & System Compatibility

• Maximum system voltage: 1,500 V, suitable for high-voltage string designs. 

• Fuse rating: 30 A.

Advantages at a Glance

• High efficiency reduces the number of panels required, saving on BOS (Balance of System) costs.

• Bifacial gain: higher yields when installed over reflective or “albedo” surfaces.

• Robust structure: double-glass for added durability and longer life.

• Excellent low-light and temperature performance thanks to N-type cell technology.

• Long-term reliability supported by strong product and performance warranties.

Document: Specification Sheet