--- title: "Silfab SIL-330 BL 330W Solar Panel - Specs & Review | ComparePV" description: "Silfab SIL-330 BL 330W solar panel. Specs: 19.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/silfab-sil-330-bl" updated: 2026-09-11 --- # Silfab SIL-330 BL Light for its output, no clear weak spot 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Silfab - **Model:** SIL-330 BL - **Series:** BC Series - **Rated power:** 330 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 300-350 W (286 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 330 W | 325 W | Typical | | | Module efficiency | 19.40% | 19.00% | Typical | 12,735 | | Power density | 194.1 | 190.0 | Typical | 12,721 | | Temperature coefficient | -0.377 | -0.360 | Typical | 13,390 | | Weight (kg) | 18.2 kg | 19.0 kg | Strong - top 9% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.40% | 19.00% | Typical | 12,735 | | Power density | 194.1 | 190.0 | Typical | 12,721 | | Temperature coefficient | -0.377 | -0.360 | Typical | 13,390 | | Weight per kWp | 55.2 | 60.0 | Strong - top 9% | 9,575 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Strengths - **55.2 kg per kWp** - Top 9% of the PERC 300-350 W segment, against a median of 60.0. Ranked 9,575th in the whole database. - **30 year performance warranty** - Top 15% of the PERC 300-350 W segment, against a median of 25 yrs. - **Best for:** Residential and BIPV. ## Specification ### Electrical - **Rated power (Pmax):** 330 W - **Efficiency:** 19.40 % - **Voltage at Pmax (Vmp):** 34.72 V - **Current at Pmax (Imp):** 9.51 A - **Open-circuit voltage (Voc):** 42.24 V - **Short-circuit current (Isc):** 9.83 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.377 %/degC - **Temperature coefficient of Voc:** -0.279 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 126 ### Physical - **Length:** 1700 mm - **Width:** 1000 mm - **Thickness:** 38 mm - **Weight:** 18.2 kg - **Area:** 1.70 m2 - **Power density:** 194.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 82.6 % - **First-year degradation:** 2.90 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 273 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12735 of 14005 | | Power density | 12721 of 14005 | | Temperature coefficient | 13390 of 14005 | | Weight | 9575 of 14005 | | Warranty | 21 of 14005 | ## About this series The Silfab BC Series answers the growing demand among homeowners for solar aesthetics that don't come at the cost of performance. The **back contact technology** used in these modules moves all electrical connections to the rear of the cell, leaving the front surface free of metallization grids and fully uniform in appearance. This design eliminates the visible busbar lines typical of conventional panels, creating a **sleek, all-black look** that's especially well-suited for street-facing roofs, where design matters just as much as specifications. Beyond its visual appeal, back contact technology reduces shading losses on the front side of the cell while also relieving mechanical stress at the electrical contact points, resulting in **improved durability and long-term stability**. The panels are built on high-quality monocrystalline PERC cells, sandwiched between high-transmittance tempered glass and a modern polymer backsheet. The Silfab BC Series is backed by a **long-term manufacturer warranty**, covering both workmanship and linear power performance, making it a strong choice for installations that call for a combination of premium design, reliability, and predictable energy yield. ## Notable figures - Efficiency of 19.4% matches the \*\*PERC 0-400W\*\* median - Power density of 194.1 W/m² matches the \*\*PERC 0-400W\*\* median - Temperature coefficient of -0.38%/°C matches the \*\*PERC 0-400W\*\* median - At 18.2 kg, this panel is 2.3 kg lighter than \*\*PERC 0-400W\*\* median (20.5 kg) - easier handling during installation - #12735 for efficiency, #13390 for temperature performance out of 14005 panels ## Questions ### How does back contact technology in Silfab BC panels differ from panels with front-side busbars? In conventional panels, metal busbars and finger contacts sit on the front of the cell, creating visible lines and slightly reducing active surface area. In the Silfab BC Series, all 126 half-cut cells have their electrical connections moved to the rear, over a black backsheet. The front surface is fully uniform with no visible metallization grid, while the panel still reaches up to 19% efficiency with reduced front-shading losses. ### What warranty comes with the Silfab BC Series and what does it cover? The Silfab BC Series carries a 25-year product warranty covering workmanship and materials, plus a 30-year linear power output warranty. This means protection against manufacturing defects as well as gradual power degradation over the module's operating life. It's one of the longer warranty periods offered among Tier 1 manufacturers, giving investors greater confidence in predictable system output over three decades. ### Is the Silfab BC Series still available for purchase? No, the Silfab BC Series has been discontinued and is no longer part of the manufacturer's standard current lineup. Availability is now limited to remaining distributor stock or the secondary market. Anyone planning a new installation should ask their supplier about Silfab's current successor series with similar back contact technology, since sourcing matching inverters and accessories for a discontinued model may become harder over time. ### Are Silfab BC panels suitable for roofs visible from street level? Yes, this is one of the series' main use cases. The absence of visible busbars and the uniform, fully black appearance make Silfab BC panels blend well with a home's facade rather than looking like a typical industrial array. That's why the manufacturer targeted this series primarily at residential customers for whom roof aesthetics matter as much as energy performance. ### How does the Silfab BC Series perform on hot summer roofs? The series has a low power temperature coefficient and a NOCT of 43°C (±2°C), the cell's operating temperature under typical irradiance conditions. This means the panel loses relatively less power in high heat compared to modules with a higher temperature coefficient, resulting in more stable energy yield on hot summer days, which matters especially for roofs with limited ventilation. ### Is Silfab a Tier 1 manufacturer, and where is the BC Series produced? Yes, Silfab Solar is a Tier 1 manufacturer headquartered in Canada and one of the largest automated PV module makers in North America. Like the rest of the brand's lineup, the BC Series was manufactured at North American production facilities, which for some buyers is an important factor when evaluating a supplier's quality control and supply chain. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Silfab-SIL-330-BL-20210803-Final-8210acaacd70.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | -50 W, cooler, +3.9 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, +3.8 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, +3.8 pp, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -45 W, lighter, +3.6 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -30 W, lighter, +3.6 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -10 W, lighter, +3.6 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | +10 W, lighter, +3.6 pp | | [Silfab SIL-300 ML](https://comparepv.com/panel/silfab-sil-300-ml) | 300 W | -30 W, cooler, -1.8 pp | | [Silfab SIL-310 ML](https://comparepv.com/panel/silfab-sil-310-ml) | 310 W | -20 W, cooler, -1.2 pp | | [Silfab SIL-320 BL](https://comparepv.com/panel/silfab-sil-320-bl) | 320 W | -10 W, -0.6 pp | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +110 W, cooler, +3.5 pp | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | +105 W, cooler, +3.3 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +3.2 pp, +10 yr warranty | | [Jetion JT430SYk(B)](https://comparepv.com/panel/jetion-jt430syk-b) | 430 W | +100 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/silfab-sil-330-bl Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.