--- title: "SunLink SL5N108-435W 435W Solar Panel - Specs & Review | ComparePV" description: "SunLink SL5N108-435W 435W solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunlink-sl5n108-435w" updated: 2026-09-11 --- # SunLink SL5N108-435W Efficiency leader, no clear weak spot 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** SunLink - **Model:** SL5N108-435W - **Series:** SL5N108 (420–435 W) - **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 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 ### 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 % - **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 (420-435 W) are modules designed to maximize energy yield from a limited roof area, even under less-than-ideal conditions. The use of **N-type cells in TOPCon technology** ensures stable performance over time and higher resistance to typical performance degradation factors in long-term operation. The **half-cut** design helps minimize losses in partially shaded conditions, while the **multi-busbar architecture** supports reliable connections and reduces the risk of microcracks. In practice, this means fewer surprises in energy production and a more cost-effective installation - particularly in single-family homes, on roofs with chimneys, skylights, or dormers. **Bifacial** versions can also utilize reflected light from the ground, which will be appreciated by investors installing modules on the ground, on bright roofs, or on elevated structures. For installers, **robust resistance to weather conditions** and easy integration with existing equipment through standard connectors will also be important. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - 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 - In the top 36% for efficiency among all TOPCon panels ## Questions ### What warranty does the SunLink SL5N108 series come with? The SunLink SL5N108 series carries a 15-year product warranty covering defects in materials and workmanship, along with a 30-year linear power output warranty. The extended power guarantee is directly linked to the N-type TOPCon cell technology — N-type cells degrade more slowly than conventional PERC, allowing the manufacturer to back a longer performance commitment over the module's operational lifetime. ### Are SunLink SL5N108 panels a good choice for a roof with chimneys, dormers, or partial shading? Yes, the SL5N108 series is specifically designed for challenging roof layouts. The half-cut cell design splits each cell in two, so shading on one portion of the module does not halt output from the other half. The multi-busbar architecture further reduces resistive losses and the risk of microcracks, delivering more stable energy production even when part of the roof is periodically shaded by a chimney or skylight. ### How does TOPCon technology in the SunLink SL5N108 compare to standard PERC panels? TOPCon (Tunnel Oxide Passivated Contact) uses N-type silicon rather than P-type as in PERC. This translates to higher cell efficiency, significantly lower light-induced degradation (LID), and better resistance to potential-induced degradation (PID). Over the 30-year power warranty period, SL5N108 modules should retain more of their rated output than comparable PERC panels, improving the overall LCOE of the installation. ### Do bifacial SunLink SL5N108 panels make sense when installed on a pitched roof? The bifacial gain is most pronounced where the rear side of the module can capture reflected light — ground mounts, white roofing membranes, or elevated racking systems. On a typical dark-colored pitched roof, rear-side contribution will be minimal. That said, bifacial SL5N108 variants carry no additional maintenance burden and preserve flexibility if the installation is later reconfigured to a ground or carport setup where bifacial performance would be realized. ### What is the peak wattage of the SunLink SL5N108, and how many panels are needed for a 10 kWp system? The SL5N108 series peaks at 435 Wp per module. A 10 kWp residential system would therefore require approximately 23–24 panels at the 435 W variant. The relatively high per-module power output means more capacity fits within a limited roof area — an important advantage for single-family homes where usable roof space is constrained by chimneys, skylights, or architectural features. ### Is SunLink a reliable manufacturer — is the SL5N108 series a safe purchase? SunLink does not currently appear in Bloomberg NEF Tier 1 module manufacturer rankings, which is worth considering for project financing purposes. However, the SL5N108 series offers competitive warranty terms (15+30 years) and modern TOPCon cell technology. Before purchasing, verify that your local distributor provides in-country warranty support — for modules from non-Tier 1 manufacturers, robust local after-sales service is especially important for long-term peace of mind. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/SL5N108-Topcon-Bifacial-Silver-e4f3ba005b37.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-sl5n108-435w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.