640W JA N-Type Double Glass Bifacial Solar Panel JAM72D42-640/LB

The JA Solar JAM72D42-640/LB is a high-performance 640W N-Type bifacial solar panel designed for commercial, industrial, utility-scale, and large residential solar installations. Built with advanced N-Type cell technology, 16BB multi-busbar half-cell architecture, and durable double-glass construction, this module delivers exceptional energy yield, improved reliability, and long-term performance.

With a module efficiency of up to 22.9%, the JAM72D42-640/LB maximizes power generation while reducing the overall levelized cost of energy (LCOE). Its bifacial design captures sunlight from both the front and rear sides, enabling additional energy production from reflected light and improving system output in ground-mount, carport, and high-albedo environments.

The N-Type cell technology offers excellent resistance to Light Induced Degradation (LID), superior low-light performance, and enhanced temperature characteristics, helping maintain higher energy production throughout the panel's lifespan. The robust double-glass design provides increased durability, improved protection against environmental conditions, and long-term reliability in demanding climates. 

Key Features

• 640W rated power output
• Up to 22.9% module efficiency
• Advanced N-Type solar cell technology
• Double glass bifacial construction for increased energy generation
• 16BB Multi-Busbar Half-Cell technology
• Low annual degradation rate of only 0.4%
• Excellent low-light and high-temperature performance
• Reduced Light Induced Degradation (LID)
• 1500V DC system voltage compatibility
• IP68-rated junction box for superior weather resistance
• Suitable for commercial, industrial, agricultural, and utility-scale projects
• 12-year product warranty
• 30-year linear power output warranty 

Technical Specifications

• Model: JAM72D42-640/LB
• Brand: JA Solar
• Rated Power (Pmax): 640W
• Module Efficiency: 22.9%
• Open Circuit Voltage (Voc): 52.87V
• Maximum Power Voltage (Vmp): 44.29V
• Short Circuit Current (Isc): 15.31A
• Maximum Power Current (Imp): 14.45A
• Cell Type: N-Type Monocrystalline
• Number of Cells: 144 Half-Cells (6 × 24)
• Dimensions: 2465 × 1134 × 30 mm
• Weight: 34.6 kg
• Front Glass / Back Glass: 2.0 mm / 2.0 mm
• Maximum System Voltage: 1500V DC
• Operating Temperature: -40°C to +85°C
• Maximum Series Fuse Rating: 30A
• Bifaciality: 80% ±5%
• Connector: QC 4.10-351 / MC4-EVO2A Compatible 

Why Choose the JA Solar JAM72D42-640/LB?

The JA Solar 640W N-Type Double Glass Bifacial Solar Panel is engineered to deliver maximum energy output, exceptional durability, and industry-leading long-term performance. Its combination of N-Type efficiency, bifacial generation capability, low degradation rates, and robust double-glass construction makes it an ideal choice for solar professionals seeking maximum return on investment and superior energy production over 30 years.