JA Solar

JA Solar JAM78S10-440/MR 440W Mono PERC Half-Cell Solar Panel

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Title

JA Solar JAM78S10-440/MR — 440W Mono PERC Half-Cell Solar Panel

The JA Solar JAM78S10-440/MR is a high-efficiency 440W monocrystalline PERC half-cell solar module featuring Multi-Busbar (MBB) technology. Designed for both residential and commercial installations, this panel delivers superior performance with a silver frame and white backsheet (SLV/WHT).

Key Features

  • 156 half-cut PERC monocrystalline cells (6×26)
  • 440W nameplate capacity with 20.3% module efficiency
  • Multi-Busbar (MBB) technology for higher power output
  • Half-cell configuration reduces shading losses and hot-spot risk
  • 1500V DC maximum system voltage
  • Silver frame / White backsheet
  • Better mechanical loading tolerance
  • Lower temperature coefficient for improved performance in hot climates

Electrical Specifications (STC)

Parameter Value
Rated Maximum Power (Pmax) 440W
Open Circuit Voltage (Voc) 54.25V
Maximum Power Voltage (Vmp) 44.15V
Short Circuit Current (Isc) 10.44A
Maximum Power Current (Imp) 9.97A
Module Efficiency 20.3%
Power Tolerance 0~+5W
Max System Voltage 1500V DC (IEC)
Max Series Fuse Rating 20A

Temperature Coefficients

Parameter Value
Temperature Coefficient of Pmax (γ_Pmp) -0.350%/°C
Temperature Coefficient of Voc (β_Voc) -0.289%/°C
Temperature Coefficient of Isc (α_Isc) +0.051%/°C
NOCT 45±2°C

Mechanical Specifications

Parameter Value
Cell Type Monocrystalline PERC
Number of Cells 156 (6×26)
Dimensions 2180×996×40mm (85.83×39.21×1.57 in)
Weight 24.5 kg (54.0 lbs)
Frame Anodized Aluminium (Silver)
Backsheet White
Cable Cross Section 4mm²
Connector PV-KST4-EVO2 / QC4.10-35
Operating Temperature -40°C ~ +85°C

Certifications

IEC 61215 | IEC 61730 | ISO 9001:2015 | ISO 14001:2015 | OHSAS 18001:2007

Warranty

  • 12-Year Product Warranty (materials and workmanship)
  • 25-Year Linear Power Output Warranty

Datasheet

Download JA Solar JAM78S10-440/MR Datasheet (PDF)