Suntech STP620–640S-C78/Nsh+
High-Efficiency N-type Bifacial Dual-glass PV Module | 620W–640W | 22.9% Efficiency
Product Overview
The STP620–640S-C78/Nsh+ is a next-generation N-type bifacial solar module from Suntech, engineered with TOPCon cell technology and dual-glass structure for superior energy yield, reliability, and long-term durability. Designed for large-scale utility and commercial projects, this module achieves power outputs of up to 640W and efficiency up to 22.9%.
With bifacial energy gain potential of up to 25%, the module significantly reduces Levelized Cost of Energy (LCOE) and increases return on investment.
Key Features
High Power Output
Power range from 620W to 640W with up to 22.9% efficiency, ideal for space-constrained projects seeking higher yield per panel.
Advanced N-type TOPCon Technology
Delivers zero LID, ultra-low LeTID, and superior anti-PID performance for long-term stable output.
Bifacial Energy Generation
Double-glass design with bifaciality factor of ~80% ±5%, enabling up to 25% rear-side gain depending on ground reflectivity.
Robust Mechanical Strength
Certified to withstand up to 5400 Pa front and 2400 Pa rear static load — suitable for harsh environments including snow, sand, and high wind.
Smart Design for Installation
Equipped with MC4-compatible connectors, IP68 junction box, and factory-optimized cable lengths for faster EPC deployment.
Extended Warranty
Backed by 15-year product warranty and 30-year linear performance warranty.
Technical Summary
Application Scenarios
Utility-scale solar farms
Commercial & industrial rooftops
Solar tracker systems with bifacial optimization
Projects in high-temperature, high-humidity, or snow-load regions
