JA Solar JAM66D45 LB 640W N-type Bifacial Module

Short Description:

Premium Cell Technology: N-type Bycium+ cells and 16BB MBB half-cell technology deliver higher power output and lower LID/LeTID degradation.
Superior Energy Yield: High-density module design and bifacial dual-glass structure maximize energy yield and lower LCOE.
Excellent Reliability: Certified by authoritative institutions (IEC, UL, ISO) and features an IP68 junction box with 3 diodes.
High Mechanical Load: Robust anodized aluminum frame and 2.0mm heat-strengthened glass ensure durability in harsh environments.
30-Year Warranty: 1% first-year degradation and 0.4% annual degradation over 30 years (87.4% power output at year 30).

Mechanical Parameters

Item	Specification
Cell	Mono (N-type Bycium+)
Weight	32.8 kg
Dimensions	2382±2mm × 1134±2mm × 30±1mm
Cable Cross Section Size	4mm² (IEC), 12 AWG (UL)
No. of Cells	132 (6×22)
Junction Box	IP68, 3 diodes
Connector	QC 4.10-351 / MC4-EVO2A
Cable Length	Portrait: 400mm(+) / 200mm(-) (Including Connector); Landscape: 1400mm(+) / 1400mm(-)
Frame	Anodized Aluminium Alloy
Front Glass	2.0mm, Anti-reflection Coating
Back Glass	2.0mm, Heat Strengthened Glass
Packaging Configuration	36pcs/Pallet, 720pcs/40HQ Container
Remark	Customized frame color and cable length available upon request

Electrical Parameters at STC (Standard Test Conditions)

(Note: The original PDF table was corrupted. The following values are inferred based on standard 640W N-type module specifications for this dimension.)

Item	Specification
Model	JAM66D45 LB (640W)
Peak Power Watts-Pmax (Wp)	640
Maximum Power Voltage-Vmp (V)	~43.0
Maximum Power Current-Imp (A)	~14.88
Open Circuit Voltage-Voc (V)	~51.5
Short Circuit Current-Isc (A)	~15.7
Module Efficiency ηm (%)	~23.7

Comprehensive Certificates

IEC 61215, IEC 61730, UL 61215, UL 61730
ISO 9001:2015 Quality management systems
ISO 14001:2015 Environmental management systems
ISO 45001:2018 Occupational health and safety management systems
IEC 62941:2019 Terrestrial photovoltaic (PV) modules – Quality system for PV module manufacturing

Linear Performance Warranty

1% 1st-year Degradation
0.4% Annual Degradation Over 30 years
87.4% Power Output at Year 30

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Product Detail

Product Tags

Introducing the JA Solar JAM66D45 LB, a premium 640W n-type double glass bifacial solar module designed for maximum energy yield and lower LCOE. Featuring advanced n-Bycium+ cell technology and 16BB MBB half-cell design, it delivers superior power output with minimized degradation. Built with a high-density module design and a robust dual-glass structure, this 132-cell (6×22) module ensures excellent reliability and mechanical load resistance. Backed by a comprehensive 30-year linear performance warranty (0.4% annual degradation after year 1) and certified by IEC, UL, and ISO standards, it is the ideal choice for commercial and utility-scale solar projects.