Suntech 270W Polycrystalline Solar Panel 35mm

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Trust Suntech to delivery reliable performance over time! A world-class manufacturer of crystalline silicon photovoltaic modules, Suntech has unrivaled manufacturing capacity and world-class technology. Panels undergo rigorous quality control meeting the highest international standards, including ISO 9001: 2008, ISO 14001: 2004 and ISO 17025: 2005. This is backed up by regular independently checked production processes from internationally accredited institutes and companies, as well as 2 x 100% EL inspection ensuring defect-free modules.


  • High module conversion efficiency
    Module efficiency up to 16.3% achieved through advanced cell technology and manufacturing capabilities
  • Positive tolerance
    Positive tolerance of up to 5% delivers higher output reliablity
  • Extended wind and snow load tests
    Module certified to withstand extreme wind (3800 Pascal) and snow loads (5400 Pascal)
  • High PID resistant
    Advanced cell technology and qualified materials lead to high resistance to PID
  • Suntech current sorting process
    System output maximized by reducing mismatch losses up to 2% with modules sorted & packaged by amperage
  • Withstanding harsh environment
    Reliable quality leads to a better sustainability even in harsh environment like desert, farm and coastline. Tests include salt mist, ammonia corrosion, and sand blowing testing
  • Special 4 busbar design
    The unique cell design leads tremendous reduction in electrodes resistance and raise in conversion efficiency. Less residual stress, less cell microcracks and less hotspot risks
  • IP68 Rated Junction Box
    The Suntech IP68 rated junction box ensures an outstanding waterproof level, supports installations in all orientations and reduces stress on the cables. High reliable performance, low resistance connectors ensure maximum output for the highest energy production


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Suntech STP270-20/Wem
Electrical Characteristics STC
Maximum Power at STC (Pmax) 270 W
Optimum Operating Voltage (Vmp) 31.1 V
Optimum Operating Current (Imp) 8.69 A
Open Circuit Voltage (Voc) 37.9 V
Short Circuit Current (Isc) 9.15 A
Operating Module Temperature -40oC to +85oC
Maximum System Voltage 1000 V DC (IEC)
Maximum Series Fuse Rating 20 A
Power Tolerance 0/+5 %
STC: lrradiance 1000 W/m2, module temperature 25oC, AM=1.5;
Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%
Electrical Characteristics NOCT
Maximum Power at NOCT (Pmax) 198 W
Optimum Operating Voltage (Vmp) 28.4
Optimum Operating Current (Imp) 6.97 A
Open Circuit Voltage (Voc) 34.9 V
Short Circuit Current (Isc) 7.42 A
NOCT: Irradiance 800 W/m2, ambient temperature 20oC, AM=1.5, wind speed 1 m/s;
Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%
Temperature Characteristics
Nominal Operating Cell Temperature (NOCT) 45+/-2oC
Temperature Coefficient of Pmax -0.41 %/oC
Temperature Coefficient of Voc -0.33 %/oC
Temperature Coefficient of Isc 0.067 %/oC
Mechanical Characteristics
Solar Cell Polycrystalline silicon 156 × 156 mm (6 inches)
No. of Cells 60 (6 × 10)
Dimensions 1640 × 992 × 35mm (64.6 × 39.1 × 1.4 inches)
Weight 18.2 kgs (40.1 lbs.)
Front Glass 3.2 mm (0.13 inches) tempered glass
Frame Anodized aluminium alloy
Junction Box IP68 rated (3 bypass diodes)
Output Cables TUV (2Pfg1169:2007)
4.0 mm^2 (0.006 inches^2), symmetrical lengths (-) 1000mm (39.4 inches) and (+) 1000 mm (39.4 inches)
Connectors Original MC4 connectors


10 year solar panel warranty - 10 year product warranty - guaranteed free from defects in materials and workmanship 25 year solar panel warranty - 25 year performance warranty - guaranteed 80% of rated solar panel wattage

Industry-leading Warranty based on nominal power - 97.5% in the first year, thereafter, for years two (2) through twenty-five (25), 0.7% maximum decrease from MODULE’s nominal power output per year, ending with the 80.7% in the 25th year after the defined WARRANTY STARTING DATE.

For more information, please read our full warranty policy

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