--- title: "Jetion JT520SNk(B) Solar Panel: Specs & Datasheet | ComparePV" description: "Jetion JT520SNk(B) solar panel. Specs: 22.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt520snk-b" image: "https://comparepv.com/og/panel/jetion-jt520snk-b.png" updated: 2026-09-11 --- # Jetion JT520SNk(B) Solid all-round for its segment 43 panels in the segment HJT 500-550 W ## Identity - **Manufacturer:** Jetion - **Model:** JT520SNk(B) - **Series:** JT SNk(B) - **Rated power:** 520 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 500-550 W (43 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 520 W | 515 W | Strong - top 24% | | | Module efficiency | 22.80% | 22.90% | Typical | 2,769 | | Power density | 228.0 | 229.5 | Typical | 2,816 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 27.4 kg | 27.1 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.80% | 22.90% | Typical | 2,769 | | Power density | 228.0 | 229.5 | Typical | 2,816 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 52.7 | 53.1 | Typical | 6,394 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Commercial, utility-scale and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 520 W - **Efficiency:** 22.80 % - **Voltage at Pmax (Vmp):** 30.80 V - **Current at Pmax (Imp):** 16.89 A - **Open-circuit voltage (Voc):** 36.60 V - **Short-circuit current (Isc):** 17.81 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 96 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1750 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 27.4 kg - **Area:** 2.28 m2 - **Power density:** 228.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 90.3 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.30 % - **Output after 30 years:** 470 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2769 of 14129 | | Power density | 2816 of 14129 | | Temperature coefficient | 13 of 14129 | | Weight | 6394 of 14129 | | Warranty | 21 of 14129 | ## Pros - **HJT technology with N-type cells** - Heterojunction (HJT) technology combined with N-type monocrystalline silicon delivers a very low temperature coefficient and strong resistance to LID and PID degradation, resulting in more stable energy output on hot days and over the module's operating lifetime compared to conventional PERC cells. - **Bifacial dual-sided cells** - The dual-glass design with bifacial cells captures additional energy from reflected light on the rear side of the module, which is particularly valuable under variable irradiance conditions - mornings, evenings, and cloudy days. - **30-year power output warranty** - A 30-year power warranty with degradation guaranteed below 10% clearly exceeds the 25-year industry standard offered by many tier-1 manufacturers, lowering LCOE over the long-term investment horizon. - **Robust mechanical construction** - Rated for snow loads up to 5400 Pa and wind loads up to 2400 Pa, the JT SNk(B) series is suitable for both rooftop installations and ground-mounted PV farms in demanding climatic conditions. - **Long-established tier-1 manufacturer** - Jetion Solar has operated since 2004 and holds bankable tier-1 status, increasing manufacturer credibility and easing project financing for installations using this series. ## Cons - **Efficiency below segment leaders** - Efficiency of 22.1-23% is lower than comparable 525 Wp modules such as the Jolywood JW-HD108N-R2 (23.6%) or Jinko Tiger Neo (23.61%), meaning a larger module footprint for the same power output and potentially higher BoS cost per kWp. - **HJT technology typically costs more to produce** - Compared with TOPCon-based peer comparables (VSUN, Jinko), HJT technology traditionally carries higher manufacturing costs, which can translate into a higher purchase price per Wp despite comparable or lower efficiency figures. ## About this series The JT SNk(B) series comprises dual-glass photovoltaic modules built on heterojunction (HJT) technology, combining thin-film HJT layers with N-type monocrystalline silicon. Thanks to **bifacial cells**, these panels capture additional energy from light reflected onto the rear side of the module, resulting in noticeably higher energy yield compared to conventional single-sided designs. The design, based on **HJT technology** and a special anti-reflective glass, ensures stable performance even under low irradiance conditions - in the morning, evening, or on cloudy days - making the JT SNk(B) series particularly well suited to variable sunlight conditions. The panels also stand out for their **very low temperature coefficient**, limiting power losses on hot days, along with strong resistance to LID and PID degradation, translating into **long-term stable energy production**. A robust mechanical structure, rated to withstand snow loads up to 5400 Pa and wind loads up to 2400 Pa, makes them suitable for both rooftop installations and ground-mounted solar farms. Backed by a **30-year power output warranty** with guaranteed degradation below 10%, the JT SNk(B) series is an attractive choice for investors seeking low LCOE and high reliability over a multi-decade investment horizon. ## Notable figures - Efficiency of 22.8% matches the \*\*HJT 500-550W\*\* median - At 228.1 W/m² power density, roof space requirements are typical for \*\*HJT 500-550W\*\* panels - Temperature coefficient of -0.24%/°C matches the \*\*HJT 500-550W\*\* median - Bifacial design (85% factor) captures reflected light - adds 4-13% yield on ground-mount or white roof - Ranked #2769 out of 14129 panels for efficiency in the database ## Questions ### How does the HJT technology used in Jetion JT SNk(B) panels differ from classic PERC cells? HJT (heterojunction) cells combine thin-film layers with N-type monocrystalline silicon, delivering higher efficiency and a lower temperature coefficient than classic PERC cells. This means JT SNk(B) panels lose less power on hot days and perform better under diffuse light - in the morning, evening, or on cloudy days. The result is higher real-world annual energy yield. ### Do the bifacial Jetion JT SNk(B) panels actually produce more energy? Yes, thanks to bifacial cells the panel captures additional light reflected from the ground onto the rear side of the module, increasing energy yield compared to monofacial panels. The extra gain depends on the albedo of the surface below the array - light-colored roofs, gravel, or snow perform better than dark ground. Best results are achieved with ground-mount or elevated racking configurations. ### What warranty comes with Jetion JT SNk(B) panels and what does it cover? The JT SNk(B) series comes with a 15-year product warranty and a 30-year power output warranty guaranteeing degradation below 10 percent over that period. These are among the longer terms on the market, translating into lower estimated LCOE and greater investment security for rooftop and ground-mount installations amortized over several decades. ### Are Jetion JT SNk(B) panels suitable for ground-mount solar farms? Yes, the mechanical design withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa, meeting requirements for both rooftop installations and larger ground-mount farms. The bifacial technology also favors ground-mount racking with clearance from the ground, where the rear side of the module can effectively capture reflected light. ### Do JT SNk(B) panels perform well under low irradiance and cold temperatures? Yes, thanks to HJT technology and special anti-reflective glass, the panels maintain stable output even under low light conditions, typical of mornings, evenings, and cloudy days. A very low temperature coefficient limits power losses on hot days and also helps the module operate efficiently in colder climates. ### Who manufactures Jetion JT SNk(B) panels and are they a Tier 1 supplier? The JT SNk(B) series is manufactured by Jetion, a Chinese Tier 1 manufacturer, indicating solid financial standing, project bankability, and a proven production track record recognized by financing institutions. Maximum module power in this series reaches 525 Wp, making it competitive among other HJT bifacial panels on the market. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/4bc49c53da8147a68ad75fb6dae40c11-c4ad2f94f857.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | -10 W, lighter, +2.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | -25 W, lighter, +2.0 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +40 W, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | -15 W, lighter, +1.9 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Hotter, lighter, +1.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +35 W, lighter, +1.8 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | -30 W, lighter, +1.7 pp | | [Jetion JT505SNk(B)](https://comparepv.com/panel/jetion-jt505snk-b) | 505 W | -15 W, -0.7 pp | | [Jetion JT510SNk(B)](https://comparepv.com/panel/jetion-jt510snk-b) | 510 W | -10 W, -0.4 pp | | [Jetion JT515SNk(B)](https://comparepv.com/panel/jetion-jt515snk-b) | 515 W | Very close match | | [Jetion JT525SNk(B)](https://comparepv.com/panel/jetion-jt525snk-b) | 525 W | Very close match | | [REC REC475AA Pure-RX](https://comparepv.com/panel/rec-rec475aa-pure-rx) | 475 W | -45 W, lighter, -5 yr warranty | | [REC REC470AA PURE-RX](https://comparepv.com/panel/rec-rec470aa-pure-rx) | 470 W | -50 W, lighter, -5 yr warranty | | [REC REC Alpha Pure-RX 470 Wp](https://comparepv.com/panel/rec-rec-alpha-pure-rx-470-wp) | 470 W | -50 W, lighter, -5 yr warranty | | [REC REC465AA Pure-RX](https://comparepv.com/panel/rec-rec465aa-pure-rx) | 465 W | -55 W, lighter, -5 yr warranty | --- Source: https://comparepv.com/panel/jetion-jt520snk-b 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.