Aptos DNA-108 N-Type 440
#1 in 150 W and upFull review
A low-cost all-black rooftop panel with an unusually long 30-year product warranty, for a home system bought as a full set of panels.
Signature Solar $189.20$189.20
The Aptos DNA-108 N-Type 440 is the better rigid solar panel overall, rated 4.7 to 4.5. The Aptos DNA-108 N-Type 440 leads on value. The Aptos DNA-108 N-Type 440 costs $56.79 less ($189.20 vs $245.99).
Silfab Prime NTC 440
#10 in 150 W and upFull review
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.
SolarTown $245.99 Solar Cellz USA $279.32$245.99
Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Aptos DNA-108 N-Type 440 for value ($0.43 per rated watt vs $0.56 per rated watt).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Aptos DNA-108 N-Type 440 | Silfab Prime NTC 440 |
|---|---|---|
| Overall rating | 4.7/5 | 4.5/5 |
| Value 45% | 100 $0.43 per rated watt | 90 $0.56 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 100 IP68, 30-year warranty | 100 IP68, 12-year warranty |
| Efficiency 15% | 91 22.5% module efficiency | 92 22.6% module efficiency |
Specifications
| Aptos DNA-108 N-Type 440 | Silfab Prime NTC 440 | |
|---|---|---|
| Output | ||
| Rated power | 440 W | 440 W |
| Module efficiency | 22.5% | 22.6% |
| Claimed efficiency | 22.5% (module efficiency from the datasheet; Aptos publishes no headline figure (the 450 W version is 23.04%)) | 22.6% (module efficiency) |
| Cells | Monocrystalline (N-type, 108 split (half) cells, Aptos DNA) | Monocrystalline (N-type (NTC passivated rear), 108 half cells) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 39 V | 39 V |
| Voltage at max power (Vmp) | 33.5 V | 33.4 V |
| Short-circuit current (Isc) | 13.7 A | 14.2 A |
| Current at max power (Imp) | 13.2 A | 13.2 A |
| Voc temperature coefficient | -0.2%/°C | -0.2%/°C |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | Stäubli EVO2 | Stäubli MC4 |
| Build | ||
| Weight | 46.3 lb (21 kg) | 46.3 lb (21 kg) |
| Dimensions | 67.7 x 44.6 x 1.3 in | 67.8 x 44.6 x 1.37 in |
| Frame | anodized aluminum alloy | black anodized aluminum |
| Glass | 3.2 mm anti-reflection, low-iron tempered | 3.2 mm high-transmittance tempered, anti-reflective coating |
| Junction box rating | IP68 | IP68 |
| Warranty | 30 years | 12 years |
| Output warranty | 30 years; Aptos's standard module warranty (April 2023) allows 2% loss in year 1 and 0.54% a year after, 82.9% at year 30 | 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 |