--- title: "Jetion JT460SIt(B) Solar Panel: Specs & Datasheet | ComparePV" description: "Jetion JT460SIt(B) solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt460sit-b" image: "https://comparepv.com/og/panel/jetion-jt460sit-b.png" updated: 2026-09-11 --- # Jetion JT460SIt(B) Middle of its segment, heavy for its output 1,096 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Jetion - **Model:** JT460SIt(B) - **Series:** JT SIt(B) - **Rated power:** 460 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1096 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 460 W | 465 W | Typical | | | Module efficiency | 21.30% | 22.52% | Weak - bottom 4% | 8,585 | | Power density | 212.6 | 225.2 | Weak - bottom 4% | 8,845 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 28.5 kg | 24.0 kg | Weak - bottom 3% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 22.52% | Weak - bottom 4% | 8,585 | | Power density | 212.6 | 225.2 | Weak - bottom 4% | 8,845 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 62.0 | 52.2 | Weak - bottom 3% | 12,815 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **62.0 kg per kWp** - Bottom 3% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 12,815th in the whole database. - **21.30% module efficiency** - Bottom 4% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 8,585th in the whole database. - **212.6 watts per square metre** - Bottom 4% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 8,845th in the whole database. - **Best for:** Commercial and utility-scale. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 460 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 34.60 V - **Current at Pmax (Imp):** 13.30 A - **Open-circuit voltage (Voc):** 42.00 V - **Short-circuit current (Isc):** 14.07 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1908 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 28.5 kg - **Area:** 2.16 m2 - **Power density:** 212.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 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:** 402 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8585 of 14129 | | Power density | 8845 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 12815 of 14129 | | Warranty | 21 of 14129 | ## Pros - **N-type TOPCon cells with low degradation** - N-type TOPCon technology reduces LID/LETID degradation compared to older P-type PERC cells, allowing the module to maintain its rated power longer and lowering the risk of unexpected output loss in the early years of operation. - **30-year linear power warranty** - The manufacturer offers a 30-year power warranty, exceeding the typical 25-year segment standard common among comparable series from this period, giving investors a longer horizon of predictable energy production. - **Bifacial design lowering LCOE** - The glass-glass construction with a high bifaciality factor captures additional energy from reflected light, particularly beneficial in ground-mount installations and on bright surfaces, meaningfully reducing the LCOE of generated energy. - **Structural robustness and double EL inspection** - The reinforced frame and glass pass hail, snow, and wind load tests, and production includes double, full EL inspection, significantly reducing the risk of PID effect and cell micro-damage before shipment. - **Tier-1 bankable manufacturer since 2004** - Jetion has operated since 2004 and holds tier-1 bankable status, easing project financing through banks and investment funds, and the modules are compatible with standard 1500V DC mounting systems. ## Cons - **Series discontinued** - The JT SIt(B) series has been discontinued, meaning limited availability of replacement modules for warranty claims or system expansion, and warranty service may require longer fulfillment times. - **Efficiency below some peers in this power class** - The maximum efficiency of 22.2% is lower than comparable 460-480 Wp models such as the Sunket SKT460~480M10-120D3 (22.24%) and the Gamko GKA96N-PRO (24.02%), meaning lower energy yield for the same roof area. - **Product warranty shorter than market leaders** - The 12-year product warranty is shorter than the 15-25 year standard currently offered by leading tier-1 manufacturers, creating some inconsistency in investor protection against mechanical or material defects relative to the 30-year power warranty. ## About this series The JT SIt(B) series consists of dual-glass monocrystalline modules built around **N-type TOPCon multi-busbar cells**, engineered for installations expected to perform reliably for decades without significant output loss. The N-type architecture delivers noticeably **lower LID/LETID degradation**, so the panel retains its rated power longer, sparing project owners unpleasant surprises after several years of operation. The glass-glass construction, combined with refined cell manufacturing and advanced encapsulation materials, substantially reduces the risk of PID effect, backed by double full-scale EL inspection during production. The modules are **bifacial**, with a high bifaciality factor that captures additional energy from reflected light and meaningfully lowers the installation's LCOE, particularly on bright surfaces or in ground-mount and industrial rooftop projects. A reinforced frame and glass withstand heavy snow and wind loads and pass hail-resistance testing, making the series a solid choice for demanding climate conditions. This is a solution for installers and investors seeking high reliability, predictable long-term energy yield, and strong manufacturer warranties, without compromising on aesthetics or compatibility with common 1500V DC mounting systems. ## Notable figures - Module efficiency of 21.3% is 1.2pp below average for \*\*TOPCon 450-500W\*\* panels (median: 22.5%) - At 212.6 W/m², this panel generates 12.6 W/m² less per unit area than \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 450-500W\*\* median - At 28.5 kg (4.5 kg above \*\*TOPCon 450-500W\*\* median of 24.0 kg), requires checking roof load capacity - Bifacial design (85% factor) captures reflected light - adds 4-13% yield on ground-mount or white roof ## Questions ### Are Jetion JT SIt(B) solar panels still available for purchase? No, the JT SIt(B) series has been discontinued by Jetion and replaced with newer models. Availability is now limited to remaining distributor stock. If you plan to expand an existing installation, check current stock levels with your supplier, since purchasing identical modules in the future may not be possible. ### How does N-type TOPCon technology in the JT SIt(B) differ from standard PERC cells? The N-type TOPCon cells used in the JT SIt(B) series show significantly lower LID and LETID degradation compared to typical P-type PERC modules. This means the panel maintains its rated power output longer, with minimal efficiency loss during the first years of operation. TOPCon technology also delivers higher conversion efficiency and better performance under high temperatures. ### Does the bifacial design of the JT SIt(B) actually increase energy yield? Yes, the glass-glass construction with a high bifaciality factor allows the rear side of the panel to capture light reflected off the ground surface. The additional energy gain depends on the albedo of the mounting surface and the panel's height above ground, but on bright industrial rooftops or ground-mount installations it can meaningfully lower the system's LCOE, sometimes by several percent. ### What warranty does Jetion offer on the 480 Wp JT SIt(B) panels? Jetion provides a 12-year product warranty covering material and workmanship defects, plus a 30-year power performance warranty. This means that even after three decades of operation, the module is guaranteed to retain a specified percentage of its initial rated power, giving investors predictable long-term return on investment. ### Can JT SIt(B) modules withstand heavy snow and hail loads? Yes, the reinforced frame and glass-glass construction of the JT SIt(B) series are designed for demanding climate conditions and pass snow load, wind load, and hail impact resistance testing. This makes the panels suitable for both rooftop and ground-mount installations in regions with variable weather conditions. ### Are Jetion JT SIt(B) panels compatible with common mounting systems? Yes, JT SIt(B) series modules are compatible with standard 1500V DC mounting systems, simplifying integration with existing inverter setups and racking infrastructure. As a Tier 1 manufacturer based in China, Jetion ensures compliance with widely used industry standards, streamlining system design and installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/d853ed40451a4006ba68917ff1d05408-5c310273526c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +50 W, lighter, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +35 W, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.4 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +45 W, lighter, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +30 W, lighter, +3.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +40 W, lighter, +3.2 pp | | [Jetion JT465SIt(B)](https://comparepv.com/panel/jetion-jt465sit-b) | 465 W | Very close match | | [Jetion JT470SIt(B)](https://comparepv.com/panel/jetion-jt470sit-b) | 470 W | +10 W, +0.4 pp | | [Jetion JT475SIt(B)](https://comparepv.com/panel/jetion-jt475sit-b) | 475 W | +15 W, +0.7 pp | | [Jetion JT480SIt(B)](https://comparepv.com/panel/jetion-jt480sit-b) | 480 W | +20 W, +0.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +100 W, lighter, +3.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +95 W, lighter, +3.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +90 W, lighter, +3.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +80 W, lighter, +3.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +80 W, lighter, +3.1 pp | --- Source: https://comparepv.com/panel/jetion-jt460sit-b Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.