JA Solar Deep Blue 4.0 Pro JAM66D46-720/LB Solar Module 720 Watt Silver/white n-type TOPCon Bifacial Glass-Glass 12 Years Product Warranty

The JA Solar JAM66D46-720/LB is an n-type bifacial glass-glass module (Deep Blue 4.0) with a rated maximum power of 720 W and a module efficiency of 23.2%. The dual-glass construction improves mechanical robustness and environmental resistance while enabling rear-side energy gain. The product is targeted at utility-scale and large commercial PV installations.

Electrical data (STC)
Maximum Power (Pmax): 720 W
Module Efficiency: 23.2 %
Cell technology: n-type (Deep Blue 4.0)
Power tolerance: 0 ~ +3 %
Open circuit voltage (Voc): 49.00 V
Short circuit current (Isc): 18.59 A
MPP voltage (Vmpp): 41.19 V
MPP current (Impp): 17.48 A
Maximum series fuse rating: 35 A

Temperature coefficients & operating conditions
Temperature coefficient (Pmax): -0.290 %/°C
Temperature coefficient (Voc): -0.250 %/°C
Temperature coefficient (Isc): +0.045 %/°C
NOCT: 45 °C (±2 °C)
Operating temperature range: -40 °C to +85 °C
Maximum system voltage: 1500 V DC

Mechanical data
Dimensions: 2384 × 1303 × 33 mm (± tolerances)
Weight: 38.2 kg
Front glass / Back glass: 2.0 mm / 2.0 mm (heat-strengthened)
Frame: 33 mm (short frame)
Junction box: IP68, 3 diodes
Cable cross section: 4.0 mm² (IEC); 12 AWG (UL)
Cable length (portrait): 300 mm (+) / 400 mm (–)
Cable length (landscape): 1500 mm (+) / 1500 mm (–)
Connector: MC4-EVO2 / equivalent

Bifacial design & energy optimization
Bifaciality factor: 80 % ±5 %
Additional rear-side yield: depends on albedo
Optimized performance under low irradiance and inter-row shading (IAM validated)

Certifications & protection
Standards / certifications: IEC 61215, IEC 61730, IEC 62941; ISO 9001, ISO 14001, ISO 45001
Environmental resistance: salt, ammonia, sand, high temperature and high humidity resistance
EU-28 WEEE compliant; recyclable packaging

Warranty & Degradation
Product warranty: 12 years
Performance warranty:
First year: max. 1 % degradation
Annual degradation thereafter: max. 0.40 % per year
Guaranteed output after 30 years: 87.4 %

 ✅ Bifacial power generation – bifaciality 80 % ±5 % for rear-side yield
 ✅ Glass-glass construction – enhanced mechanical durability and environmental resistance
 ✅ Reduced BOS potential & lower LCOE – high power density for utility-scale layouts
 ✅ Multi-busbar / half-cell architecture – improved current collection and reduced series resistance
 ✅ High mechanical load rating – front 5400 Pa, back 2400 Pa
 ✅ PID resistance and validated low-irradiance (IAM) performance

The JAM66D46-720/LB provides very high nominal power (720 W) in a bifacial glass-glass format, combining high efficiency and validated low-irradiance performance with robust mechanical ratings and a predictable linear performance warranty. This profile supports dense, utility-scale layouts and long-term yield planning.

JAM66D46-LB 695-720W Bifacial module series features Higher power generation, Better LCOE, N-type with very low LID, Better temperature co-efficients and better low irradiance response.

JA Solar is one of the world’s largest manufacturers of photovoltaic modules. Their advanced cell technology ensures high efficiency, stable yields, and long lifespan – suitable for residential rooftops as well as large-scale solar plants. With best value pricing, fast availability, and attractive B2B conditions, JA Solar is the strong choice for professional solar installers.