--- title: "Sharp NU-JC420B Solar Panel: Specs & Datasheet | ComparePV" description: "Sharp NU-JC420B solar panel. Specs: 21.51% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sharp-nu-jc420b" image: "https://comparepv.com/og/panel/sharp-nu-jc420b.png" updated: 2026-09-11 --- # Sharp NU-JC420B Middle of its segment, short guarantee 1,220 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Sharp - **Model:** NU-JC420B - **Series:** NU-JC Series - **Rated power:** 420 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 400-450 W (1220 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 420 W | 435 W | Weak - bottom 16% | | | Module efficiency | 21.51% | 22.00% | Weak - bottom 20% | 7,958 | | Power density | 215.1 | 220.2 | Weak - bottom 18% | 7,946 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,152 | | Weight (kg) | 20.7 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.51% | 22.00% | Weak - bottom 20% | 7,958 | | Power density | 215.1 | 220.2 | Weak - bottom 18% | 7,946 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,152 | | Weight per kWp | 49.3 | 51.5 | Typical | 2,847 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,912 | ### Watch out for - **25 year performance warranty** - Bottom 7% of the TOPCon 400-450 W segment, against a median of 30 yrs. Ranked 9,912th in the whole database. - **215.1 watts per square metre** - Bottom 18% of the TOPCon 400-450 W segment, against a median of 220.2. - **21.51% module efficiency** - Bottom 20% of the TOPCon 400-450 W segment, against a median of 22.00%. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 420 W - **Efficiency:** 21.51 % - **Voltage at Pmax (Vmp):** 32.34 V - **Current at Pmax (Imp):** 12.99 A - **Open-circuit voltage (Voc):** 38.63 V - **Short-circuit current (Isc):** 13.86 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.259 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.7 kg - **Area:** 1.95 m2 - **Power density:** 215.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14129 | | Power density | 7946 of 14129 | | Temperature coefficient | 6152 of 14129 | | Weight | 2847 of 14129 | | Warranty | 9912 of 14129 | ## About this series The Sharp NU-JC series are modules designed for high efficiency, even under less-than-ideal conditions. The use of **half-cut monocrystalline** cells minimizes internal losses and helps maintain stable performance even with partial shading, which in practice translates to better energy yield from the same surface area. You may also find **PERC** or **N-type TOPCon** technology in selected variants, which allows the modules to better utilize diffuse light and maintain their parameters over time. The **positive power tolerance** is also noteworthy, which reduces the risk of underestimating the performance of the installation in real-world conditions. The series is designed for long-term reliability, as evidenced by, among other things, **high hail resistance** and a focus on dependability over the long term. It is a good choice for residential and small commercial installations, where predictable performance, aesthetics (available black versions), and greater tolerance for difficult mounting conditions are important. ## Notable figures - Efficiency of 21.5% matches the \*\*TOPCon 400-450W\*\* median - 215.1 W/m² power density is 5.1 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - requires larger installation area - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 400-450W\*\* median - At 20.7 kg, this panel is 1.3 kg lighter than \*\*TOPCon 400-450W\*\* median (22.0 kg) - easier handling during installation - Ranked #7958 out of 14129 panels for efficiency in the database ## Questions ### Is the Sharp NU-JC Series still available for purchase? The Sharp NU-JC Series has been discontinued. Sharp closed its European solar module sales division in March 2025, so no new stock is being supplied directly from the manufacturer. Any remaining availability is limited to distributor inventory. Before purchasing, confirm current stock levels and warranty service conditions directly with your supplier. ### What is TOPCon cell technology used in Sharp NU-JC panels and why does it matter? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology in which a thin tunnel oxide layer passivates the contacts and significantly reduces charge carrier recombination. In practice, this translates to higher cell efficiency (up to 22.28% in the NU-JC Series), better performance under diffuse light on overcast days, and slower long-term power degradation compared to older PERC cells. ### What warranty is included with Sharp NU-JC solar panels? Sharp offers a 25-year product warranty and a 25-year linear power output warranty. The positive power tolerance further reduces the risk of a module delivering less energy than the system design assumes. Since Sharp has exited the European market, we recommend confirming warranty claim procedures in writing with your distributor before purchasing remaining stock. ### Do Sharp NU-JC panels handle partial shading from a chimney or dormer well? Yes, the half-cut cell layout significantly improves shade tolerance. Each cell is split in two, so shading one section of the module does not block the output of the remaining sections. The N-type TOPCon technology also boosts performance under diffuse irradiance, resulting in better energy yields during overcast days or at low sun angles typical of northern European climates. ### Is there an all-black or black-frame version of the Sharp NU-JC Series? Yes, Sharp offered black-frame variants within the NU-JC Series, including the full-black NU-JC430B model. This is a solid choice for homeowners who value installation aesthetics, as the panels blend in with dark roof tiles without the contrast of a silver frame. Since the series is discontinued, confirm the specific color variant's availability with your distributor before ordering. ### What is the peak power output of a Sharp NU-JC panel and how many do I need for a typical home? The flagship model in the series reaches a peak power output of 435 Wp at approximately 22.28% efficiency. For a typical home consuming 4,000-5,000 kWh per year, around 9-12 panels are usually sufficient, resulting in a system size of roughly 3.9-5.2 kWp. The high per-panel wattage is especially useful on roofs with limited usable area, since the same energy target is met with fewer modules. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/datasheet-nujc420b-aus-r9-1bc1ba95c941.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +45 W, +2.3 pp, +5 yr warranty | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +45 W, +2.3 pp, +5 yr warranty | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +50 W, +2.2 pp, +15 yr warranty | | [AIKO AIKO-A470-MAH54Mb](https://comparepv.com/panel/aiko-aiko-a470-mah54mb) | 470 W | +50 W, +2.1 pp, +5 yr warranty | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +40 W, +2.1 pp, +5 yr warranty | | [TCL Zhonghuan HSM-BD54-LA470](https://comparepv.com/panel/tcl-zhonghuan-hsm-bd54-la470) | 470 W | +50 W, +2.1 pp, +5 yr warranty | | [Sharp NU-JC410](https://comparepv.com/panel/sharp-nu-jc410) | 410 W | Hotter, heavier, -0.5 pp | | [Sharp NU-JC415](https://comparepv.com/panel/sharp-nu-jc415) | 415 W | Hotter, -0.3 pp | | [Sharp NU-JC435](https://comparepv.com/panel/sharp-nu-jc435) | 435 W | +15 W, +0.8 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +75 W, +3.3 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +85 W, cooler, +3.2 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +85 W, +3.2 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +70 W, +3.0 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +80 W, cooler, +3.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +80 W, +3.0 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/sharp-nu-jc420b Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.