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Model SPR-MAX3-380-COM | Back Contact | 104 Monocrystalline Cells | Monofacial | 1000V System Voltage
The Maxeon SPR-MAX3-380-COM 380W Back Contact Monocrystalline Solar Panel is engineered for demanding residential and commercial rooftop projects. This high efficiency module uses SunPower Maxeon Gen III back contact cells, delivering up to 21.5% panel efficiency in a compact 104 cell format. Customers gain excellent energy density, ideal where roof space is limited but long term output is critical. A robust anodized aluminium frame, anti reflection tempered glass, and IP68 rated junction box support reliable operation in harsh sites. The solar panel product is backed by an impressive 40 year product warranty and very low annual degradation, helping secure predictable energy yields for decades and reducing lifetime cost of ownership.
High efficiency power density: With 380 W nominal output and 21.5% efficiency, each module delivers more energy per square meter. This lets designers achieve target system sizes using fewer panels and lower mounting hardware, wiring, and labor costs.
Exceptional long term reliability: A 40 year product warranty and power warranty down to 90.75% at year 30 show strong durability. The low total degradation rate of about 0.31% per year helps maintain higher production over the system lifetime.
Stable performance in real conditions: The temperature coefficient of Pmax of −0.27%/°C limits power loss on hot rooftops. Reliable output is kept from −40°C to +85°C, making the module suitable for cold climates and high heat markets alike.
Robust mechanical design: The 1690 x 1046 x 40 mm panel uses anti reflection tempered glass and an anodized aluminium frame. A 19 kg weight balances strength and handling, while IP68 junction box protection and MC4 connectors support secure outdoor connections.
Optimized for system integration: A 1000 V IEC maximum system voltage and 20 A series fuse rating fit most residential and light commercial designs. The 1200 mm cable length and three diode junction box simplify string configuration and shading resilience.
This Maxeon SPR-MAX3-380-COM solar panel converts sunlight into DC power using advanced back contact monocrystalline cells. Light enters through the high transmission tempered glass and strikes the SunPower Maxeon Gen III cells, where it is turned into electrical energy. Because contacts are placed on the rear of each cell, more active surface area remains exposed to light, supporting higher efficiency and better low light behavior. The generated current flows through integrated busbars to the IP68 junction box, then out through MC4 connectors into your string wiring and inverter. Over decades of service, a very low yearly degradation rate and stable temperature coefficients help the module continue supplying reliable output, even in harsh outdoor conditions.
Back contact cell architecture: The panel uses 104 SunPower Maxeon Gen III back contact cells rather than conventional front contact designs. Electrical contacts and grid lines sit on the rear cell surface, which maximizes active cell area and reduces shading losses from metal fingers. This architecture also supports mechanically robust cells that better resist cracking and corrosion in challenging environments.
Thermal and environmental resilience: Performance remains stable across a wide −40°C to +85°C operating temperature range. The low temperature coefficients for power, voltage, and current help limit thermal losses during hot afternoons on dark roofs. Anti reflection tempered glass, together with an anodized aluminium frame and sealed junction box, protects the cells against moisture, dust, and mechanical stress.
System level power delivery: DC energy exits through MC4 connectors and 1200 mm cables, then feeds your chosen inverter or optimizer. The 63.1 V rated voltage and 6.02 A rated current make it straightforward to design efficient strings within a 1000 V system. Three integrated bypass diodes in the junction box help reduce mismatch losses during partial shading, supporting higher real world yield over the life of the array.
| Brand / Manufacturer | Maxeon Solar Technologies, Ltd. (SunPower Maxeon) |
| Model Number | SPR-MAX3-380-COM |
| Nominal Power (Pmax) | 380 Wp |
| Power Tolerance | 0 to +5% |
| Panel Efficiency | 21.5% |
| Rated Voltage (Vmp) | 63.1 V |
| Rated Current (Imp) | 6.02 A |
| Open Circuit Voltage (Voc) | 75.0 V |
| Short Circuit Current (Isc) | 6.53 A |
| Maximum System Voltage | 1000 V IEC |
| Maximum Series Fuse Rating | 20 A |
| Power Temperature Coefficient (Pmax) | −0.27% / °C |
| Voltage Temperature Coefficient (Voc) | −0.236% / °C |
| Current Temperature Coefficient (Isc) | +0.058% / °C |
| Operating Temperature Range | −40°C to +85°C |
| Total Degradation Rate | Approximately 0.31% per year |
| Power Warranty Levels | 94.5% at 15 years, 90.75% at 30 years (typical series data) |
| Cell Technology | SunPower Maxeon Gen III back contact monocrystalline |
| Cell Count and Layout | 104 cells, back contact layout |
| Module Type | Monofacial, white backsheet, black frame |
| Dimensions (H x W x D) | 1690 x 1046 x 40 mm |
| Weight | 19 kg |
| Glass Type | High transmission tempered glass with anti reflection coating |
| Frame | Black anodized aluminium frame, Class 1 rating |
| Junction Box | IP68 junction box with 3 bypass diodes |
| Connector Type | MC4 compatible connectors (Stäubli type) |
| Cable Length | 1200 mm DC cables |
| Impact Resistance | Tested with 25 mm hail at 23 m/s (series data) |
Certifications: IEC 61215 and IEC 61730 safety and performance standards; quality management to ISO 9001:2015 and environmental management to ISO 14001:2015 (based on Maxeon 3 series documentation).
Inverter Compatibility: Suitable for most modern string inverters, optimizers, and hybrid inverters rated for 1000 V DC systems and compatible with MC4 connectors.
Environmental: Designed for harsh climates with IP68 junction box sealing, tempered glass, ammonia and salt mist resistance as indicated by Maxeon 3 family testing, and wide operating temperature range from −40°C to +85°C.
Warranty: 40 year product warranty from Maxeon Solar Technologies and long term performance warranty with power levels of 94.5% at 15 years and 90.75% at 30 years for the Maxeon 3 series, reflecting a very low annual degradation rate around 0.31%.
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