JA Solar JAM72D42-635/LB Solar Module 635 Watt Silver/white Bifacial Glass-Glass 12 Years Product Warranty

The JA Solar JAM72D42-635/LB is an n-type double-glass bifacial monocrystalline module with a rated maximum power of 635 W and a module efficiency of 22.7%. The dual-glass construction increases mechanical robustness and environmental resistance while enabling additional rear-side energy yield. The module is intended for utility-scale and large commercial PV installations where long-term stability and high power density are required.

Electrical data (STC)
Maximum Power (Pmax): 635 W
Efficiency: 22.7 %
Cell technology: n-type double-glass bifacial
Power tolerance: 0 ~ +3 %
Open circuit voltage (Voc): 52.67 V
Short circuit current (Isc): 15.26 A
MPP voltage (Vmpp): 44.10 V
MPP current (Impp): 14.40 A
Maximum series fuse rating: 30 A

Temperature coefficients & operating conditions
Temperature coefficient (Pmax): -0.290 %/°C
Temperature coefficient (Voc): -0.260 %/°C
Temperature coefficient (Isc): +0.046 %/°C
NOCT: 45 °C (±2 °C)
Operating temperature range: -40 °C to +85 °C

Mechanical data
Dimensions: 2465 ±2 mm × 1134 ±2 mm × 30 ±1 mm
Weight: 34.6 kg
Front glass / Back glass: 2.0 mm / 2.0 mm (heat-strengthened)
Frame: short frame
Junction box: IP68, 3 diodes
Cable cross section: 4.0 mm² (IEC), 12 AWG (UL)
Cable length (portrait): 300 mm (+) / 400 mm (–) (including connector)
Landscape cable length: 1500 mm (+) / 1500 mm (–)

Bifacial design & energy optimization
Bifaciality factor: 80 % ±10 %
Optimized for low-irradiance conditions and improved performance under inter-row shading conditions

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

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

 ✅ Bifacial power generation – bifaciality 80 % ±10 % for rear-side gain
 ✅ Glass-glass construction – enhanced durability and environmental resistance
 ✅ Reduced BOS cost potential & low LCOE – high power density for utility-scale layouts
 ✅ Multi / MBB / half-cell architecture – improved current collection and lower series resistance
 ✅ High mechanical load rating – front 5400 Pa, back 2400 Pa
 ✅ PID resistance and validated low-irradiance performance (IAM)

The JAM72D42-635/LB combines high nominal power (635 W) with bifacial double-glass construction, offering robust mechanical resistance and validated low-irradiance performance. Its documented linear performance warranty (First year: max. 1 %, 0.40 % p.a. thereafter) supports predictable long-term output for utility-scale projects.

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.