High-efficiency photovoltaic module using silicon nitride multicrystalline silicon cells. Performance: Rated power (Pmax) 50W Nominal voltage 12V Limited Warranty1 25 years Configuration: BP 350U Clear universal frame and standard J-box Electrical Characteristics2 BP 350 Maximum power (Pmax)3 50W Voltage at Pmax (Vmp) 17.5V Current at Pmax (Imp) 2.9A Warranted minimum Pmax 45W Short-circuit current (Isc) 3.17A Open-circuit voltage (Voc) 21.8V Temperature coefficient of Isc (0.065�0.015)%/C Temperature coefficient of Voc -(80�10)mV/C Temperature coefficient of power -(0.5�0.05)%/C NOCT (Air 20�C; Sun 0.8kW/m2 ; wind 1m/s) 47+/-2C Maximum series fuse rating 20A Maximum system voltage 600V (U.S. NEC & IEC 61215 rating) 1000V (T�V Rheinland rating) Mechanical Characteristics Dimensions Length: 839mm (33�€�) Width: 537mm (21.1�€�) Depth: 50mm (1.97�€�) Weight: 6.0 kg (13.2 pounds) Solar Cells 72 cells (42mm x 125mm) in a 4x18 matrix connected in 2 parallel strings of 36 in series Junction Box: U-Version junction box with 6-terminal connection block; IP 54, accepts PG 13.5, M20, � inch conduit, or cable fittings accepting 6-12mm diameter cable. Terminals accept 2.5 to 10mm2 (8 to 14 AWG) wire. Diodes One 9A, 45V Schottky by-pass diode included Construction Front: High-transmission 3mm (1/8th inch) tempered glass; Back: Tedlar; Encapsulant: EVA Frame: Clear anodized aluminum alloy type 6063T6 Universal frame; Color: silver BP 350 50 Watt Photovoltaic Module 1. Module Warranty: 25-year limited warranty of 80% power output; 12-year limited warranty of 90% power output; 5-year limited warranty of materials and workmanship. See your local representative for full terms of these warranties. 2. These data represent the performance of typical BP 350 products, and are based on measurements made in accordance with ASTM E1036 corrected to SRC (STC.) 3. During the stabilization process that occurs during the first few months of deployment, module power may decrease by up to 3% from typical Pmax.