DeepBlue 4.0 Pro — TOPCon n-type modules
JA Solar is one of the world's largest PV module manufacturers, founded 2005 and listed on Shenzhen Stock Exchange. The DeepBlue 4.0 Pro series uses JA's proprietary Bycium+ n-type TOPCon cell with selective emitter and polysilicon back-contact technology, achieving 22.5%+ module efficiency and sub-0.30%/°C temperature coefficient. JAM72D40, JAM54D40 and JAM78D40 series cover residential to utility applications.
Four datasheet-verified advantages for B2B procurement teams.
JA's proprietary selective-emitter TOPCon with polysilicon back contact — combines high efficiency with low recombination losses and excellent low-light performance.
BloombergNEF Tier-1 module list every year since 2014. Accepted by major project finance lenders (IFC, ADB, EIB) for utility-scale tenders globally.
Pmax temp coefficient −0.29%/°C and zero-degradation first year — meaningful yield uplift in MENA, SEA and Australian markets.
Linear performance: 99% Year 1, 87.4% Year 30. Dual-glass bifacial variants extended to 30-year product warranty + 30-year performance warranty.
Current JA Solar module series available via Econo Solar distribution. Specific SKU and power binning available on RFQ — datasheets and current production binning shared on request.
| Series | Cell Technology | Power Range | Max Efficiency | Format | Application |
|---|---|---|---|---|---|
| JAM78D40 (DeepBlue 4.0 Pro) | TOPCon n-type Bycium+ | 620–640 W | 23.2%+ | 156 cells (78×2) | Utility-scale |
| JAM72D40 (DeepBlue 4.0 Pro) | TOPCon n-type Bycium+ | 575–605 W | 22.5%+ | 144 cells (72×2) | C&I rooftop, ground |
| JAM54D40 (DeepBlue 4.0 Pro) | TOPCon n-type Bycium+ | 435–460 W | 22.5%+ | 108 cells (54×2) | Premium residential |
| JAM72D42 (DeepBlue 4.0 Bifacial) | TOPCon Bifacial | 585–615 W | 22.5%+ | 144 cells, dual-glass | Utility bifacial |
| JAM60D42 (DeepBlue 3.0) | PERC half-cell | 440–460 W | 21.4%+ | 120 cells | Cost-optimized C&I |
Datasheets are updated quarterly and may include current/lot-specific binning. We share the latest datasheet PDF with every RFQ — alongside FOB Shanghai pricing, container yield and lead time.
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