--- title: "SunLink SL5N108-435 435W Solar Panel - Specs & Review | ComparePV" description: "SunLink SL5N108-435 435W solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunlink-sl5n108-435" updated: 2026-09-11 --- # SunLink SL5N108-435 Efficiency leader, no clear weak spot 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** SunLink - **Model:** SL5N108-435 - **Series:** SL5N108 - **Rated power:** 435 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 435 W | 435 W | Typical | | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.8 | 220.2 | Strong - top 17% | 5,150 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | 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 | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.8 | 220.2 | Strong - top 17% | 5,150 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 50.6 | 51.4 | Typical | 3,963 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **22.30% module efficiency** - Top 17% of the TOPCon 400-450 W segment, against a median of 22.00%. - **222.8 watts per square metre** - Top 17% of the TOPCon 400-450 W segment, against a median of 220.2. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 435 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 32.47 V - **Current at Pmax (Imp):** 13.40 A - **Open-circuit voltage (Voc):** 38.61 V - **Short-circuit current (Isc):** 14.24 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:** 0.045 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 1.95 m2 - **Power density:** 222.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 380 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 5150 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 3963 of 14005 | | Warranty | 21 of 14005 | ## About this series The SunLink SL5N108 series has been designed to maximize energy yield from the same roof area - these modules utilize N-type cells in the **TOPCon** technology, which perform better in low-light conditions and exhibit slower degradation over time. In practice, this translates to more stable energy production in Polish conditions, especially during transitional periods when weather can be unpredictable. A key feature is the **bifacial design**, which allows for the utilization of reflected light from the ground - this is a significant advantage in situations where every additional kilowatt-hour counts, such as on bright roofs, carports, or ground-mounted installations. The use of **SMBB** and half-cell configurations minimizes losses and reduces the risk of localized overheating, which contributes to higher reliability. The entire system is completed by an **IP68 sealed junction box**, which is useful in demanding environmental conditions. The SL5N108 is a good choice for installers and investors who expect premium technology without compromising on aesthetics (Full Black variants) and durability. ## Notable figures - Efficiency of 22.3% matches the \*\*TOPCon 400-450W\*\* median - At 222.8 W/m² power density, roof space requirements are typical for \*\*TOPCon 400-450W\*\* panels - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 400-450W\*\* median - #5100 for efficiency, #6093 for temperature performance out of 14005 panels ## Questions ### What warranty does the SunLink SL5N108 come with and what does it cover? The SL5N108 series includes a 15-year product warranty covering material and manufacturing defects, plus a 30-year linear power output warranty. The power warranty guarantees that the module will maintain a defined efficiency level for three decades, which is standard for premium TOPCon modules. When purchasing, make sure the distributor confirms these terms in writing and can honor them locally. ### What is TOPCon technology and how do SunLink SL5N108 panels differ from older PERC modules? TOPCon is an N-type cell technology that delivers higher efficiency and slower degradation compared to conventional P-type PERC. In practice, SL5N108 modules perform better under diffuse light and at elevated temperatures, with a lower annual power degradation rate than PERC. This translates into a higher lifetime energy yield, which is especially relevant in the variable climate of Central Europe. ### Do the bifacial SunLink SL5N108 panels make sense on a pitched roof in Poland? On a typical pitched roof with dark tiles, the rear-side bifacial gain is marginal due to low albedo. The bifacial advantage of the SL5N108 is most significant in ground-mounted systems, carports, and flat roofs with light-colored membranes or gravel. The modules are perfectly suitable for pitched roof mounting, but the bifacial effect should be considered a bonus rather than the primary reason to choose this series for that application. ### What is the maximum power output of the SunLink SL5N108 and what kind of installations is it designed for? The SL5N108 has a maximum power output of 435 Wp. This output is typical for 108 half-cut cell formats and suits both residential prosumer installations and mid-scale commercial projects. The SMBB design combined with half-cut cell layout minimizes mismatch losses under partial shading and reduces the risk of hot spots, improving overall string reliability. ### Are the SunLink SL5N108 panels suitable for carport or ground-mounted installations? Yes, the SL5N108 is an excellent choice for carports and ground-mounted systems. The bifacial design captures reflected light from the ground surface, boosting total energy yield compared to monofacial modules. The IP68-rated junction box provides moisture resistance critical for near-ground exposure. Full Black variants are also available, offering a clean aesthetic for visible installations such as covered parking structures. ### Is SunLink a Tier 1 manufacturer and is it worth investing in their panels? SunLink does not currently appear on BloombergNEF Tier 1 lists, which indicates a limited track record in bankable project financing. This does not necessarily reflect poor product quality, but it does mean you should pay close attention to local distributor stability and warranty service availability. Before purchasing, verify who handles warranty claims in your region so that the 15-year product warranty and 30-year power warranty are realistically enforceable. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Templates-cn-file-pro-SL5M108-Topcon-Bifacial-Full-Black-d9e87d145a71.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +50 W, cooler, +2.0 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +50 W, cooler, +2.0 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +50 W, cooler, +2.0 pp | | [SunLink SL5M108-400](https://comparepv.com/panel/sunlink-sl5m108-400) | 400 W | Hotter, -1.8 pp, -5 yr warranty | | [SunLink SL5M108-405](https://comparepv.com/panel/sunlink-sl5m108-405) | 405 W | Hotter, -1.6 pp, -5 yr warranty | | [SunLink SL5M108-410](https://comparepv.com/panel/sunlink-sl5m108-410) | 410 W | Hotter, -1.3 pp, -5 yr warranty | | [SunLink SL5M108-415](https://comparepv.com/panel/sunlink-sl5m108-415) | 415 W | -20 W, hotter, -1.0 pp | | [SunLink SL5N108-420W](https://comparepv.com/panel/sunlink-sl5n108-420w) | 420 W | -15 W, -0.8 pp | | [SunLink SL5N108-425W](https://comparepv.com/panel/sunlink-sl5n108-425w) | 425 W | -10 W, -0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +75 W, cooler, +2.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +60 W, cooler, +2.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +70 W, cooler, +2.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +55 W, cooler, +2.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +65 W, cooler, +2.2 pp | --- Source: https://comparepv.com/panel/sunlink-sl5n108-435 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.