High-efficiency photovoltaic module using silicon nitride multicrystalline silicon cells. Performance: Rated power (Pmax) 40W Nominal voltage 12V Limited Warranty1 25 years Configuration BP 340U Clear universal frame and standard J-box Electrical Characteristics2 BP 340 Maximum power (Pmax)3 40W Voltage at Pmax (Vmp) 17.3V Current at Pmax (Imp) 2.31A Warranted minimum Pmax 36W Short-circuit current (Isc) 2.54A 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 20C; Sun 0.8kW/m2 ; wind 1m/s) 47+/-2�C Maximum series fuse rating 20A Maximum system voltage 600V (U.S. NEC & IEC 61215 rating) 1000V (T�V Rheinland rating) Mechanical Characteristics: Dimensions Length: 655mm (25.8�€�) Width: 537mm (21.1�€�) Depth: 50mm (1.97�€�) Weigh:t 5.75 kg (12.7 pounds) Solar Cells 36 cells (63mm x 125mm) in a 4x9 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, 1/2" inch conduit, or cable fittings accepting 6-12mm diameter cable. Terminals accept 2.5 to 10mm2 (8 to 14 AWG) wire. Diodes (None) Construction Front: High-transmission 3mm2 (1/8th inch) tempered glass; Back: Tedlar; Encapsulant: EVA Frame Clear anodized aluminum alloy type 6063T6 Universal frame; Color: silver BP 340 40 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 340 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.