• JA Solar is a major global manufacturer of solar cells and PV modules: wafers → cells → modules.
Specifications
Rated Maximum Power (Pmax)
Panels from ~ 325 Wp up to ~ 550 Wp (or more) depending on model.
Module Efficiency (η)
~ 19% to ~ 21.5% for many modern JA Solar modules.
Open-Circuit Voltage (Voc)
Roughly 40 V to 50 V depending on panel design. E.g. a 550 W panel shows Voc ~ 49.9 V.
Voltage at Maximum Power (Vmp)
~ 34 V to ~ 42 V, depending on model; e.g. some high‑power panels list ~ 41.9 V.
Short-Circuit Current (Isc)
~ 9 A to ~ 14 A depending on module size/ design.
Current at Maximum Power (Imp)
Corresponding to Vmp — e.g. around 9–13 A depending on panel.
Power Tolerance
Often around 0 W to +5 W; some variation depending on batch.
Maximum System Voltage
Commonly 1500 V (suitable for large arrays or string configurations) in many JA Solar modules.
Temperature Coefficient (Pmax)
Around −0.34%/°C to −0.36%/°C — indicates loss of output per °C above 25°C.
Operating Temperature Range
Many modules rated for roughly −40 °C to +85 °C (so they can handle harsh environmental conditions)
Mechanical / Physical Specs
Typical large 550 W‑class module: dimensions around 2278 × 1134 × 35 mm, weight ~ 28–32 kg.
Durability & Load Ratings
Many JA Solar modules are designed for high mechanical loads — front‑glass + frame able to withstand wind and other stresses in array/installation.
Warranty / Performance Guarantee
Typical product warranty ~ 12 years; long‑term power output warranty (e.g. guaranteeing a certain % of rated output over 25+ years) depending on model.
