A North American-made all-black rooftop panel for homeowners or installers who want domestic supply and a strong 30-year output warranty. Register it to get the full 25-year product warranty.
Price checked October 26, 2026. As an Amazon Associate we earn from qualifying purchases.
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
| Model number | SIL-440 QD |
|---|---|
| Output | |
| Rated power | 440 W |
| Module efficiency | 22.6% |
| Claimed efficiency | 22.6% (module efficiency) |
| Cells | Monocrystalline (N-type (NTC passivated rear), 108 half cells) |
| Bifacial | No |
| Electrical | |
| Open-circuit voltage (Voc) | 39 V |
| Voltage at max power (Vmp) | 33.4 V |
| Short-circuit current (Isc) | 14.2 A |
| Current at max power (Imp) | 13.2 A |
| Voc temperature coefficient | -0.2%/°C |
| Series / parallel | Yes |
| Connections | |
| Output connector | Stäubli MC4 |
| Build | |
| Weight | 46.3 lb (21 kg) |
| Dimensions | 67.8 x 44.6 x 1.37 in |
| Frame | black anodized aluminum |
| Glass | 3.2 mm high-transmittance tempered, anti-reflective coating |
| Junction box rating | IP68 |
| Warranty | 12 years |
| Output warranty | 30 years: at least 98% after year 1, 94.7% at 12 years, 90.8% at 25 years and 89.3% at 30 years |
| Released | 2023-09 |
A rock-bottom-price pair of 100 W panels for a 12 V shed, boat or small off-grid setup. Buyers who want a documented panel from an established maker should pay a little more for Callsun or Renogy.
Amazon $89.99A low-cost all-black panel from a top-tier maker for a home rooftop, especially in snowy areas. Confirm stock before planning around it.
Solar Cellz USA $241.45A safe all-black pick for a home rooftop array where a long warranty from a large, US-assembling maker matters more than the lowest price per watt.
Solar Cellz USA $245.29 A1 Solar Store $245.96Compare the Silfab Prime NTC 440 with any other rigid solar panel →
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