• Maximum Power at STC (Pmax): 275 W
  • Open Circuit Voltage (Voc): 38.1 V
  • Optimum Operating Voltage (Vmp): 31.2 V
  • Short Circuit Current (Isc): 9.27 A
  • Optimum Operating Current (Imp): 8.82 A
  • Nominal Voltage: 24V
  • Solar Cell: Polycrystalline silicon 6 inches
  • No. of Cells: 60 (6 × 10)
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Trust Suntech to Deliver Reliable Performance Over Time Special 5 busbar design
• World-class manufacturer of crystalline silicon photovoltaic modules

• Unrivaled manufacturing capacity and world-class technology

• Rigorous quality control meeting the highest international standards:  ISO 9001: 2008, ISO 14001: 2004 and ISO17025: 2005

• Regular independently checked production process from international accredited institute/company

• Tested for harsh environments (salt mist, ammonia corrosion and sand blowing testing: IEC 61701, IEC 62716, DIN EN 60068-2-68)***

• Long-term reliability tests

• 2 x 100% EL inspection ensuring defect-free modules

The unique cell design leads reduction in electrodes resistance,  shading area and raise in conversion efficiency.  Residual stress distribution can be more even, reducing the micro-cracks risks.
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

1                                    10                                                      25 WARRANTY STARTING DATE.****

• 12-year product warranty

• 25-year linear performance warranty

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


* Please refer to Suntech Standard Module Installation Manual for details.     **WEEE only for EU market.

*** Please refer to Suntech Product Near-coast Installation Manual for details.      **** Please refer to Suntech Product Warranty for details.

©Copyright 2018 Suntech Power                                                                                      IEC-STP-Wfw-NO3.01-Rev 2018

Electrical Characteristics

STC STP275-20/ Wfw STP270-20/ Wfw STP265-20/ Wfw
Maximum Power at STC (Pmax) 275 W 270 W 265 W
Optimum Operating Voltage (Vmp) 31.2 V 31.1 V 31.0 V
Optimum Operating Current (Imp) 8.82 A 8.69 A 8.56 A
Open Circuit Voltage (Voc) 38.1 V 37.9 V 37.8 V
Short Circuit Current (Isc) 9.27 A 9.15 A 9.02 A
Module Efficiency 16.8% 16.5% 16.2%
Operating Module Temperature -40 °C to +85 °C
Maximum System Voltage 1000 V DC (IEC)
Maximum Series Fuse Rating 20 A
Power Tolerance 0/+5 W

STC: lrradiance 1000 W/m2, module temperature 25 °C, AM=1.5;

Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%

NOCT STP275-20/ Wfw STP270-20/ Wfw STP265-20/ Wfw
Maximum Power at NOCT (Pmax) 200.6 W 198 W 194 W
Optimum Operating Voltage (Vmp) 28.5 V 28.4 V 28.3V
Optimum Operating Current (Imp) 7.05 A 6.97 A 6.86 A
Open Circuit Voltage (Voc) 34.8 V 34.9 V 34.8 V
Short Circuit Current (Isc) 7.5 A 7.42 A 7.32 A

Current-Voltage & Power-Voltage Curve (275-20)             NOCT: Irradiance 800 W/m2, ambient temperature 20 °C, AM=1.5, wind speed 1 m/s;

Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%

Nominal Operating Cell Temperature (NOCT) 45±2°C
Temperature Coefficient of Pmax -0.41 %/°C
Temperature Coefficient of Voc -0.33 %/°C
Temperature Coefficient of Isc 0.067 %/°C
Solar Cell Polycrystalline silicon 6 inches
No. of Cells (6 × 10)
Dimensions × 992 × 35mm (64.96 × 39.1 × 1.4 inches)
Weight 18.3 kgs (40.3 lbs.)
Front Glass 3.2 mm (0.13 inches) tempered glass
Frame Anodized aluminium alloy
Junction Box IP68 rated (3 bypass diodes)
Output Cables 4.0 mm2 (0.006 inches2), symmetrical lengths (-) 1000mm (39.4 inches) and (+) 1000 mm (39.4 inches)
Connectors MC4 compatible
W/m2 W/m2                              600 W/m2 W/m2 W/m2

Temperature Characteristics

Container 20’ GP 40’ HC
Pieces per pallet 30 30
Pallets per container 6 28
Pieces per container 180 840

Mechanical Characteristics     Packing Configuration

Information on how to install and operate this product is available in the installation instruction. All values indicated in this data sheet are subject to change without prior announcement. The specifications may vary slightly. All specifications are in accordance with standard EN 50380. Color differences of the modules relative to the figures as well as discolorations of/in the modules which do not impair their proper functioning are possible and do not constitute a deviation from the specification.


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