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600Wp
JA Solar JAM66D42-600/MB
JA Solar Review

JAM66D42-600/MB

MonocrystallineBifacial
23.20%
Efficiency
232.3 Wp/m²
Power Density
-0.290%/°C
Temp. Coeff. Pmax chart
524W from 600W
Power after 30 years
  • At 23.2% efficiency, this panel is on par with typical TOPCon 600-650W modules
  • At 232.3 W/m² power density, this panel generates 4.6 W/m² more per unit area than TOPCon 600-650W median (227.7 W/m²)
  • At -0.29%/°C, hot weather performance is typical for TOPCon 600-650W panels
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
  • In the top 8% for efficiency among all TOPCon panels
Performance Profile
Price Offers 0
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Series JAM66D42 MB 6 variants
Efficiency Range 22.5% - 23.4%
Avg. Efficiency 22.92%
Technology TOPCon
Dimensions 2278 × 1134 mm
Show series description

JA Solar JAM66D42 MB series modules are designed for installations where high energy yield from the same surface area and stable performance over years are crucial – especially for commercial rooftops and utility-scale PV farms. These modules feature N-type TOPCon cells, which maintain their parameters better in the long term and are less susceptible to typical operational losses, effectively mitigating the risk of disappointment with production after several seasons. The double glass construction enhances resistance to environmental conditions and improves laminate durability, which is vital for projects with a long payback period. Thanks to bifacial technology, the module can utilize reflected light from the ground, boosting energy yield where every percentage point counts. The semi-lattice design supports better tolerance to partial shading and minimizes connection losses, while the refined cell architecture aids performance under lower irradiance. This is an excellent choice for investors, EPC contractors, and companies optimizing LCOE who seek advantages over standard P-type PERC modules.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)600 Wp
Module Efficiency23.20%
Voltage at Max Power (Vmpp)41.24 V
Current at Max Power (Impp)14.55 A
Open Circuit Voltage (Voc)48.98 V
Short Circuit Current (Isc)15.41 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.290%/°C
Temp. Coeff. Voc-0.250%/°C
Temp. Coeff. Isc0.045%/°C
NOCT45°C
Cell Technology
Cell TypeMonocrystalline
Cell Count132
BifacialYes
Bifaciality Factor80%
Dimensions & Weight
Length2278 mm
Width1134 mm
Height30 mm
Weight31.8 kg
Area2.58 m²
Power Density232.3 Wp/m²
Warranty
Product Warranty12 years
Performance Warranty30 years
End-of-Warranty Output87.4%
First Year Degradation1.00%
Annual Degradation0.40%/year
Key Specifications
23.20%
Efficiency
600 Wp
Power
-0.29%/°C
Temp Coeff
30 yrs
Warranty