JA Solar JAM66D45 LB Series 620W

High-performance, double-glass, n-type TOPCon solar module for commercial & utility installations.


🔹 Key Specs & Highlights

  • Nominal Maximum Power (Pmax): 620 W

  • Module Efficiency: ~ 22.95 %

  • Open Circuit Voltage (Voc): ~ 48.50 V

  • Voltage at Max Power (Vmp): ~ 40.21 V

  • Short Circuit Current (Isc): ~ 16.13 A

  • Current at Max Power (Imp): ~ 15.42 A

  • Dimensions: 2,382 × 1,134 × 30 mm

  • Weight: 33.1 kg

  • Cell / Module Construction: 132 cells (6 × 22), double-glass bifacial, 2.0 mm glass front & back

  • Mechanical Load Ratings: 5,400 Pa (front) / 2,400 Pa (rear)

  • Temperature Coefficients:
      • Pmax: –0.290 % / °C 
      • Voc: –0.250 % / °C 
      • Isc: +0.045 % / °C

  • Max System Voltage: 1,500 V DC

  • Warranty & Degradation:
      • 12-year product warranty
      • 30-year linear performance warranty (first-year ≤1 % loss; ~0.40 % annual loss)

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