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Model ODA645-33V-MHD | HJT Monocrystalline | 132 Half-Cell 210×105 mm | Bifacial | 1500V System Voltage
The Osda ODA645-33V-MHD 645W HJT bifacial monocrystalline solar panel is engineered for high power output and reliable long term performance. This advanced module combines cutting edge heterojunction cell technology with a bifacial design to extract more energy from every ray of sunlight. It is ideal for commercial rooftops, utility scale arrays, and demanding off grid projects where maximum energy density per square meter is required. With a module efficiency up to 20.76% and a power range that extends across the ODA-132MHD series, this panel helps reduce balance of system costs and lowers the overall cost of energy. The robust construction includes an anodized aluminum frame, tempered glass with anti reflection coating, and a junction box rated up to IP68 for dependable outdoor use. Osda backs the product with a 15 year product warranty and a 30 year power warranty, ensuring long lasting value for investors, installers, and end users.
High power density for modern projects: The 645W rated output allows system designers to achieve more installed capacity on limited roof or ground space. Fewer panels are needed for the same kilowatt rating, which can reduce mounting hardware, cabling, and labor costs.
Efficient bifacial energy harvest: Bifacial construction captures light from the front and rear sides of the module. This design can boost energy yield compared with standard monofacial panels, especially over reflective surfaces such as white roofs, light concrete, or snow.
Reliable long term performance: A 30 year power warranty with 84.95% rated output at the end of the period supports long term energy forecasts. Low annual degradation of 0.5% helps safeguard project returns and reduces the risk for investors and system owners.
Robust mechanical strength and protection: The anodized aluminum frame and tempered glass are engineered for demanding field conditions. Certified mechanical load performance and waterproof junction box design help the panel withstand wind, snow, dust, and moisture across diverse climates.
Flexible integration and system design: A maximum system voltage of 1500V supports long strings and lower system currents. The positive power tolerance from 0 to +3% ensures each module delivers at least its nameplate power, simplifying array design and energy yield calculations.
This Osda HJT bifacial monocrystalline solar panel converts sunlight into usable DC electricity through high efficiency photovoltaic cells. Each of the 132 half cut cells uses heterojunction technology, where thin amorphous silicon layers surround a crystalline silicon wafer. This structure reduces recombination losses and enhances performance at higher temperatures. Light striking the front glass is absorbed by the cells and converted into electrical energy. At the same time, the rear side can capture reflected and diffuse light, increasing overall energy yield under suitable mounting conditions. The generated DC current flows through the integrated busbars into the junction box and then along the string cabling to the inverter. The inverter converts the DC energy into AC power for onsite loads or export to the utility grid. Thermal and electrical characteristics such as temperature coefficients, operating temperature range, and maximum system voltage are carefully matched to ensure stable output, even under varying weather and irradiance levels.
HJT monocrystalline cell conversion: Heterojunction cells combine crystalline silicon with thin amorphous layers on both sides of the wafer. This architecture minimizes carrier losses and provides strong performance at low irradiance and in hot conditions. As a result, the panel maintains more of its rated power output during real world operation.
Bifacial rear side energy gain: The rear side of the module is designed to absorb light reflected from the ground or mounting surface. When installed over bright or reflective materials, additional photons reach the back of the cells and are converted into extra electricity. This effect can increase total kilowatt hour yield without expanding the array footprint.
System integration and power delivery: Current and voltage at maximum power, known as Impp and Vmpp, determine how the panel behaves in a string. The 1500V system rating allows more modules to be connected in series, reducing current and therefore cable losses. The high quality junction box with multiple diodes manages string safety and mitigates mismatch from shading or localized soiling.
| Brand | Ningbo Osda Solar Co., Ltd. |
| Country of Origin | China |
| Model Number | ODA645-33V-MHD (ODA-132MHD Series) |
| Cell Technology | HJT monocrystalline, SMBB technology |
| Cell Size | 210 × 105 mm |
| Cell Count and Type | 132 half cut monocrystalline cells |
| Module Technology | Bifacial monocrystalline solar panel |
| Power Range (Series) | 645 Wp to 670 Wp (up to 730W in ODA-132MHD range) |
| Maximum Power (Pmax) - Main Variant | 645 Wp |
| Voltage at Maximum Power (Vmpp) - 645W | 37.2 V |
| Current at Maximum Power (Impp) - 645W | 17.34 A |
| Open Circuit Voltage (Voc) - 645W | 45.0 V |
| Short Circuit Current (Isc) - 645W | 18.44 A |
| Secondary Power Variant (Pmax) | 488 Wp |
| Voltage at Maximum Power (Vmpp) - 488W | 34.6 V |
| Current at Maximum Power (Impp) - 488W | 14.11 A |
| Open Circuit Voltage (Voc) - 488W | 42.2 V |
| Short Circuit Current (Isc) - 488W | 14.84 A |
| Module Efficiency Range | 20.76% to 21.56% |
| Nominal Module Temperature | 45 ± 2 °C |
| Operating Temperature Range | -40 °C to +85 °C |
| Temperature Coefficient of Pmax | -0.34 % / °C |
| Temperature Coefficient of Voc | -0.25 % / °C |
| Temperature Coefficient of Isc | +0.04 % / °C |
| Maximum System Voltage | 1500 V DC |
| Series Fuse Rating | 30 A |
| Power Tolerance | 0 to +3 % |
| Total Degradation after 30 Years | 84.95% of initial power guaranteed |
| Annual Degradation Rate | 0.5% per year (linear) |
| Panel Dimensions (H × W × D) | 2384 × 1303 × 30 mm |
| Weight per Module | 38 kg |
| Glass Type | Tempered glass with anti reflection coating |
| Glass Thickness | 2.0 mm |
| Frame Type and Color Options | Anodized aluminum frame, available in silver and black |
| Junction Box Protection Grade | IP67 / IP68, Class II safety level |
| Junction Box Diodes | 3 bypass diodes, enhanced PID resistance |
| Mechanical Load Rating | 2400 Pa wind load, 5400 Pa snow load |
Certifications: IEC 61215 and IEC 61730 certified for performance and safety; manufactured in facilities audited to ISO and CE standards; enhanced mechanical load testing to 2400 Pa wind and 5400 Pa snow.
Inverter Compatibility: Compatible with most modern string and central inverters designed for 1500V DC systems; suitable for grid tied and hybrid inverters that accept high current, high power modules when wired according to manufacturer guidelines.
Environmental: Designed for harsh outdoor environments with IP67/IP68 junction box sealing, anodized frame resistant to chemical corrosion, and PID resistant cell and encapsulation materials for long term field reliability.
Warranty: 15 year limited product warranty covering materials and workmanship, plus 30 year linear power output warranty with a maximum 0.5% annual degradation and at least 84.95% of initial power guaranteed at year 30.
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