--- title: "Selfa SV108M.3.4-440 Solar Panel: Specs & Datasheet | ComparePV" description: "Selfa SV108M.3.4-440 solar panel. Specs: 22.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/selfa-sv108m-3-4-440" image: "https://comparepv.com/og/panel/selfa-sv108m-3-4-440.png" updated: 2026-09-11 --- # Selfa SV108M.3.4-440 Middle of its segment, weak in heat 322 panels in the segment N-type 400-450 W ## Identity - **Manufacturer:** Selfa - **Model:** SV108M.3.4-440 - **Series:** SV108M.3.4 - **Rated power:** 440 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 400-450 W (322 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 440 W | 430 W | Strong - top 23% | | | Module efficiency | 22.00% | 21.95% | Typical | 6,580 | | Power density | 220.2 | 218.4 | Typical | 6,391 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 25% | 6,152 | | Weight (kg) | 22.0 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.00% | 21.95% | Typical | 6,580 | | Power density | 220.2 | 218.4 | Typical | 6,391 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 25% | 6,152 | | Weight per kWp | 50.0 | 51.2 | Typical | 3,329 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 25% of the N-type 400-450 W segment, against a median of -0.290. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 440 W - **Efficiency:** 22.00 % - **Voltage at Pmax (Vmp):** 32.84 V - **Current at Pmax (Imp):** 13.40 A - **Open-circuit voltage (Voc):** 39.40 V - **Short-circuit current (Isc):** 13.95 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 108 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 2.00 m2 - **Power density:** 220.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 20 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.0 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.41 % - **Output after 30 years:** 383 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6580 of 14129 | | Power density | 6391 of 14129 | | Temperature coefficient | 6152 of 14129 | | Weight | 3329 of 14129 | | Warranty | 21 of 14129 | ## About this series The SV108M.3.4 series consists of photovoltaic modules built on the latest **TOPCon N-Type technology**, designed for investors who expect stable energy output even under demanding weather conditions. Half-cut cells arranged in a **multi-busbar** layout reduce resistive losses and improve tolerance to partial shading, allowing the panel to maintain performance even when a roof receives uneven sunlight. What sets this series apart is the patented **SELF-C self-cleaning coating**, which limits the accumulation of dust, pollen, and other contaminants on the glass surface, resulting in less frequent maintenance and more consistent yields over time. The module's construction has been reinforced for **increased mechanical durability**, withstanding snow and wind loads up to 8000Pa as well as hailstones up to 55mm in diameter, making it a solid choice for roofs exposed to harsh weather, including installations in northern and central Poland. A black frame version is also available for projects where facade aesthetics matter. The SV108M.3.4 series is well suited both for installers handling residential projects and for companies seeking a reliable component for larger commercial installations, where long-term durability and a predictable LCOE are essential. ## Notable figures - Efficiency of 22.0% matches the \*\*N-type 400-450W\*\* median - At 220.2 W/m² power density, roof space requirements are typical for \*\*N-type 400-450W\*\* panels - At -0.30%/°C, hot weather performance is typical for \*\*N-type 400-450W\*\* panels - Ranked #6580 out of 14129 panels for efficiency in the database ## Questions ### What is TOPCon N-Type technology used in Selfa SV108M.3.4 panels, and how does it differ from standard PERC panels? TOPCon N-Type is a newer generation of silicon cells that, compared to the popular PERC technology, offers higher conversion efficiency (around 21.5% for the SV108M.3.4), lower power degradation over time, and better performance at high temperatures. Combined with multi-busbar technology and half-cut cells, it reduces resistive losses and improves yield stability, resulting in higher energy production over the system's lifetime. ### Do Selfa SV108M.3.4 panels with the SELF-C coating need regular cleaning? Not under typical conditions. The patented SELF-C self-cleaning coating reduces the buildup of dust, pollen, and other contaminants on the glass, so most of it is washed away by rainfall and UV radiation alone. In practice, this means less frequent system servicing and more stable year-round energy yields, especially on roofs that are hard to access. ### Can Selfa SV108M.3.4 panels withstand heavy wind, snow loads, and hail, e.g. in northern Poland? Yes, the module's construction has been reinforced for increased mechanical resistance, withstanding snow and wind loads up to 8000Pa as well as hail impacts up to 55mm in diameter. This makes the SV108M.3.4 a solid choice for roofs exposed to harsh weather conditions, including installations in northern and central Poland where snow loads can be significant. ### What warranty comes with Selfa SV108M.3.4 solar panels? The manufacturer provides a 20-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the panel maintains a defined minimum energy output level for three decades as specified in the datasheet, giving investors predictable yields and a favorable impact on long-term LCOE calculations. ### Is the Selfa SV108M.3.4 a bifacial panel that generates power from both sides? No, the SV108M.3.4 series is a monofacial module, optimized for standard mounting on pitched and flat roofs where the rear side has no access to reflected light. If you're planning a ground-mounted installation or one on a bright, reflective surface, a bifacial model from the manufacturer's lineup may be worth considering, but for typical rooftop installations the SV108M.3.4 is a fully adequate solution. ### Who is the Selfa SV108M.3.4 series designed for, and is a black frame version available? The SV108M.3.4 suits both installers handling residential projects and companies looking for a reliable component for larger commercial installations, where durability and predictable energy cost matter most. A black frame version is also available, well suited to projects where facade aesthetics are a priority, such as roofs visible from street level. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/531-68c2fdb615d9.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +50 W, cooler, +2.5 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +50 W, cooler, +2.5 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +45 W, cooler, +2.3 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +45 W, cooler, +2.3 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +45 W, cooler, +2.3 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +45 W, cooler, +2.3 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +45 W, cooler, +2.3 pp | | [Selfa SV108M.3.4-430](https://comparepv.com/panel/selfa-sv108m-3-4-430) | 430 W | -10 W, -0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +70 W, cooler, +3.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +55 W, cooler, +2.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +65 W, cooler, +2.7 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +60 W, cooler, +2.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +60 W, cooler, +2.5 pp | --- Source: https://comparepv.com/panel/selfa-sv108m-3-4-440 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.