The JA Solar JAM66D45-620LB 620W solar module is a high-performance bifacial panel engineered to deliver exceptional energy output and long-term reliability for residential, commercial, and utility-scale solar installations. Powered by advanced MBB N-type solar cell technology and a half-cell configuration, this module provides higher efficiency, reduced light-induced degradation (LID), and improved performance in low-light conditions.
Its durable double-glass construction enhances structural strength and protects the module against environmental stresses such as moisture, dust, and temperature fluctuations. The bifacial design allows the panel to capture sunlight from both the front and rear surfaces, increasing total energy generation.
With industry-leading efficiency and a robust warranty structure, the JA Solar 620W module offers a reliable and sustainable solution for modern solar power systems requiring high output and long-term performance.
Key Features
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High Power Output – 620W: Delivers exceptional energy generation for residential, commercial, and industrial installations.
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N-Type Cell Technology: Enhances efficiency, durability, and resistance to degradation.
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Bifacial Technology: Generates additional energy by capturing sunlight on both the front and rear sides.
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Double Glass Construction: Improves durability and resistance to environmental stress.
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Improved Low-Light Performance: Better energy yield in cloudy or weak sunlight conditions.
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Excellent Temperature Coefficient: Reduces performance losses in high-temperature environments.
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Long-Term Reliability: Supported by industry-leading warranties.
Certifications
- IEC61215
- IEC61730
- ISO9001:2015 – Quality Management System
- ISO14001:2015 – Environmental Management System
- ISO45001:2018 – Occupational Health and Safety Management Systems
- IEC 62941:2019 – Quality System for PV Module Manufacturing
Warranty
| Warranty Type |
Details |
| Product Warranty |
12 Years |
| Linear Power Warranty |
30 Years |
| First Year Degradation |
1% |
| Annual Degradation |
0.4% over 30 years |
Technical Specifications
| Model |
JAM66D45-620LB |
| Rated Power (Pmax) |
620 W |
| Module Efficiency |
23% |
| Cell Type |
Mono 16BB N-Type |
| Number of Cells |
132 (6 × 22) |
| Bifacial Technology |
Yes |
| Dimensions |
2382 × 1134 × 30 mm |
| Weight |
33.1 kg |
| Front / Back Glass |
2.0 mm / 2.0 mm Double Glass |
| Junction Box |
IP68, 3 Diodes |
| Connector |
QC 4010-351 / MC4-EVO2A |
| Maximum Power Voltage (Vmp) |
40.21 V |
| Open Circuit Voltage (Voc) |
48.50 V |
| Maximum Power Current (Imp) |
15.42 A |
| Short Circuit Current (Isc) |
16.13 A |
| Power Tolerance |
0 ~ +3% |
| Maximum System Voltage |
1500 V DC |
| Maximum Series Fuse Rating |
35 A |
| Operating Temperature |
-40°C to +85°C |
| Temperature Coefficient (Pmax) |
-0.290 % / °C |
| Nominal Operating Cell Temperature (NOCT) |
45 ± 2°C |
| Maximum Static Load (Front) |
5400 Pa |
| Maximum Static Load (Back) |
2400 Pa |
| Bifaciality |
80% ± 5% |
| Product Warranty |
12 Years |
| Linear Power Warranty |
30 Years |
STC: Irradiance 1000 W/m², Cell Temperature 25°C, AM 1.5G.
Note: Panel dimensions and specifications are subject to change. Please confirm specifications at the time of purchase.
