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JA Solar Panels 625w Dealer JAM78D40 605W Bifacial Solar Module
JA Solar Panels 625w Dealer JAM78D40 605W Bifacial Solar Module

For solar equipment dealers and distributors targeting high-performance photovoltaic solutions, the JA Solar JAM78D40-605/GB N-type bifacial double glass module is a standout offering that balances power output, reliability, and long-term value. Built with advanced SMBB (Super Multi Busbar) N-type cells and half-cell technology, this module caters to commercial and utility-scale projects while meeting strict industry certifications.

Product Details

For solar equipment dealers and distributors targeting high-performance photovoltaic solutions, the JA Solar JAM78D40-605/GB N-type bifacial double glass module is a standout offering that balances power output, reliability, and long-term value. Built with advanced SMBB (Super Multi Busbar) N-type cells and half-cell technology, this module caters to commercial and utility-scale projects while meeting strict industry certifications.

Core Advantages for Dealers and End-Users

The 605W JA Solar module integrates key technologies to deliver competitive performance, making it a lucrative product for dealers to stock:
  1. Superior Energy GenerationEquipped with the latest SMBB N-type solar cells and half-cell ribbon connection technology, the module boasts excellent weak illumination response and a optimized temperature coefficient (-0.300%/°C). These features ensure higher power yield in low-light conditions and hot climates, reducing LCOE (Levelized Cost of Energy) for end customers.
  2. Industry-Leading WarrantyDealers can offer clients a 12-year product warranty and a 30-year linear power output warranty, with only 1% first-year degradation and 0.4% annual degradation thereafter. This robust warranty package enhances the module’s market appeal and reduces post-sale service burdens for dealers.
  3. Bifacial Power GainWith a bifaciality rate of 80%±10%, the module can capture rear-side sunlight (up to 10% irradiation ratio), boosting total power output to 659Wp (at 10% rear-front irradiation ratio). This flexibility makes it suitable for projects with reflective ground surfaces, expanding its application scope.
  4. Enhanced DurabilityThe module features 2.0mm front and back glass, anodized aluminum alloy frames, and IP68-rated junction boxes. It can withstand front static loads of 5400Pa and rear loads of 2400Pa, ensuring stability in harsh weather and reducing maintenance claims for dealers.

605W Module Technical Specifications

Mechanical Parameters

ParameterSpecification
Cell TypeMono-16BB N-type
Number of Cells156 (6×26)
Dimensions2465±2mm × 1134±2mm × 35mm
Weight34.6kg
Front/Back Glass2.0mm/2.0mm
Junction BoxIP68, 3 diodes
ConnectorQC 4.10-351/MC4-EVO2A
Cable Length (Portrait)200mm (+)/300mm (-)
Packaging31pcs/pallet, 496pcs/40HQ container

Electrical Performance (STC: 1000W/m², 25℃, AM1.5)

ParameterValue
Rated Maximum Power (Pmax)605W
Open Circuit Voltage (Voc)54.90V
Maximum Power Voltage (Vmp)45.80V
Short Circuit Current (Isc)14.09A
Maximum Power Current (Imp)13.21A
Module Efficiency21.6%
Power Tolerance0~+5W
Temperature Coefficient of Pmax-0.300%/°C

Electrical Performance with 10% Rear Irradiation Ratio

ParameterValue
Rated Maximum Power (Pmax)659Wp
Open Circuit Voltage (Voc)54.93V
Maximum Power Voltage (Vmp)45.80V
Short Circuit Current (Isc)15.22A

Compliance and Dealer-Friendly Support

Comprehensive Certifications

The module holds key certifications including IEC61215, IEC61730, CE, and ISO 9001/14001/45001 management system certifications, ensuring it meets global market standards and reducing import/export barriers for dealers.

Packaging and Customization

For dealers, JA Solar offers flexible packaging (31pcs per pallet, 496pcs per 40HQ container) to optimize freight costs for bulk orders. Custom frame colors and cable lengths are also available on request, allowing dealers to cater to niche customer needs.


For JA solar panels 625w dealers expanding their product portfolio, the JAM78D40-605/GB 605W module is a high-margin, high-demand option. Its advanced N-type technology, robust warranty, and bifacial capabilities appeal to project developers, while its compliance and customization options simplify dealer operations. With JA Solar’s brand reputation and the module’s performance, dealers can capture a larger share of the growing solar equipment market.

FAQs

What is the conversion efficiency of your company's photovoltaic modules?

The efficiency of mass-produced TOPCon components reached 24.7% (industry average 23.5%), and the efficiency of laboratory N-type batteries exceeded 26.1% (T Ü V certification)
Double sided component back gain of 30%+, suitable for high reflection ground scenes

How does the component perform in extreme climates such as deserts and extreme cold?

Working in a wide temperature range of -40 ℃~85 ℃, the Norwegian polar project measured that the power generation exceeded the design value by 103% at -30 ℃
Desert environment anti UV aging certification, with an annual attenuation rate of only 0.45% (industry average of 0.8%)

Do you provide customized design solutions for the project? How long is the response cycle?

Provide free system design services (including shadow analysis and IRR calculation)
Standard solution output within 48 hours, complex scenarios (such as offshore microgrids) within 72 hours

Do you support sample testing?

Provide 2 free samples with third-party testing reports attached

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