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Seraphim Brand review

SEG-475-BTB-BG

475 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 8,336 of 14,005
Compare panels Datasheet PDF
Power (Wp)
475
Typical for its class
Efficiency (%)
21.94
Weak · bottom 16%
Density (Wp/m²)
219.4
Weak · bottom 16%
Temp (%/°C)
-0.300
Weak · bottom 20%
Weight (kg)
27.3
Weak · 3.3 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Seraphim YUKON N Series introduces a new level of quality to modern photovoltaic installations thanks to the extensive use of N-type cells in TOPCon technology. This solution effectively eliminates the problem of light-induced degradation (LID), which translates into a significantly longer module lifespan and stability of energy yields over decades of use. These panels feature an exceptionally low temperature coefficient, which means they operate extremely efficiently even on hot summer days when standard modules lose a significant portion of their rated power. The YUKON N Series design also guarantees above-average efficiency in low-light conditions, which is a key advantage in the specific conditions of the Polish climate, especially during the autumn-winter period. It is an ideal choice for investors seeking a maximum return on investment in residential building projects and large industrial farms. The use of innovative multi-busbar technology effectively minimizes the risk of micro-cracks and optimizes current flow within the cell. Compared to market competitors, this series stands out with a lower Levelized Cost of Energy (LCOE), offering advanced premium technology while maintaining an optimal investment budget. Choosing these modules ensures long-term reliability and full energy security for any type of PV system.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.94% 22.52% Weak · bottom 16% 6,751
Power density 219.4 225.2 Weak · bottom 16% 6,709
Temperature coefficient -0.300 -0.290 Weak · bottom 20% 6,093
Weight per kWp 57.5 52.2 Weak · bottom 5% 11,245
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential, commercial, hot-climate and shaded-installations.

Not ideal for

Weight-limited structures, roofs where every square metre has to count and tight roof space.

Watch-outs
57.5 kg per kWp

Bottom 5% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 11,245th in the whole database.

219.4 watts per square metre

Bottom 16% of the TOPCon 450-500 W segment, against a median of 225.2.

21.94% module efficiency

Bottom 16% of the TOPCon 450-500 W segment, against a median of 22.52%.

Notes from the database
  • Module efficiency of 21.9% is 0.6pp below average for TOPCon 450-500W panels (median: 22.5%)
  • 219.4 W/m² power density is 5.8 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
  • Temperature coefficient of -0.30%/°C matches the TOPCon 450-500W median
  • At 27.3 kg, this panel is 3.3 kg heavier than the TOPCon 450-500W median (24.0 kg) - more demanding for installation crews
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 475 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.94 % Weak Segment median 22.52%
Vmpp · Impp 35.80 V · 13.27 A Operating point at max power
Voc · Isc 43.00 V · 13.94 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1909×1134×30 mm · 2.16 m² of roof
Weight 27.3 kg Weak Weak · 3.3 kg above median
Cells 120 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 20% of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 408 W guaranteed
Degradation 2.60 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Seraphim in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 475 Wp appear here. The rest cover the whole series.

Additional Value From Linear Warranty Additional Value From Linear Warranty Whole series I-V Curve (Cells temp.=25°C) I-V Curve (Cells temp.=25°C) Whole series I-V Curve (Incident Irrad.=1000W/m², varying cell temperature) I-V Curve (Incident Irrad.=1000W/m², varying cell temperature) Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Seraphim SEG-475-BTB-BG 475 W 21.94% -0.300 27.3 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +3.1 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +2.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +2.8 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +2.6 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +2.6 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, lighter, +2.6 pp
SRP-440-BMB-HV 440 W 20.33% -0.340 22.3 kg Lighter, -1.6 pp, -5 yr warranty
SRP-445-BMB-BG 445 W 20.56% -0.340 27.3 kg -30 W, hotter, -1.4 pp
SRP-450-BMB-BG 450 W 20.79% -0.340 27.3 kg -25 W, hotter, -1.2 pp
SRP-455-BMB-BG 455 W 21.02% -0.340 27.3 kg -20 W, hotter, -0.9 pp
SRP-460-BMB-HV 460 W 21.25% -0.340 22.3 kg Hotter, lighter, -5 yr warranty
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +85 W, cooler, +2.9 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +80 W, cooler, +2.7 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +75 W, lighter, +2.5 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +65 W, cooler, +2.5 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +65 W, lighter, +2.5 pp

Found 746 panels of the same or similar size to this one, within ±10 mm. See them here Found 755 panels of the same or similar size to this one, within ±25 mm. See them here Found 916 panels of the same or similar size to this one, within ±50 mm. See them here Found 1503 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How do Seraphim YUKON N Series panels perform on hot days – do they lose power at high temperatures?
Thanks to N-type TOPCon cells, the YUKON N Series has an exceptionally low temperature coefficient of approximately -0.30%/°C, compared to -0.35%/°C typical of standard PERC modules. This means that at 45°C, a YUKON N panel loses significantly less power output than a conventional module. For owners in sunny climates, this translates into measurably higher energy yields during peak summer months.
What warranty does the Seraphim YUKON N Series come with?
Seraphim provides a 15-year product warranty covering manufacturing defects and a 30-year linear power output warranty. The TOPCon N-type cell structure keeps annual degradation rates lower than PERC alternatives, ensuring stable energy production throughout the entire 30-year guarantee period. Seraphim holds Tier 1 status per Bloomberg NEF classification, which supports project bankability and insurance requirements.
How does the TOPCon technology in the YUKON N Series differ from standard PERC cells?
TOPCon (Tunnel Oxide Passivated Contact) cells use an N-type silicon substrate instead of P-type, which eliminates Light Induced Degradation (LID) and achieves higher conversion efficiency – typically above 22% at the module level. Compared to PERC, the result is better low-light performance, a lower temperature coefficient, and a longer effective service life with less power decline over the years.
Do bifacial YUKON N Series panels actually deliver extra yield in real-world conditions?
Yes. With a bifaciality factor of 70–85%, real-world bifacial gain typically ranges from 5–15% depending on ground albedo. Light-colored surfaces such as gravel, white membranes, or snow reflect irradiance onto the rear side of the module and increase total output. The rated power of up to 495 Wp refers to the front side only under STC, so actual system yield in favorable conditions can be meaningfully higher.
How do Seraphim YUKON N Series panels perform under low-light conditions – overcast skies and short winter days?
Low-light performance is one of the core strengths of N-type TOPCon technology. At irradiance levels of 200–400 W/m², typical of overcast northern European winters, these cells maintain a higher short-circuit current ratio than PERC modules, resulting in more energy production per installed kilowatt-peak. The multi-busbar design further minimizes resistive losses and reduces sensitivity to partial shading.
Are Seraphim YUKON N Series panels suitable for residential rooftops or are they designed for utility-scale projects?
The series is engineered for both segments. With up to 495 Wp per module and high module efficiency, YUKON N panels maximize generation on the limited roof area of a residential home while also delivering a competitive LCOE in large ground-mounted and industrial rooftop installations. Tier 1 manufacturer status simplifies project financing and meets the bankability criteria required by most commercial lenders and insurers.
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