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490-BTB-BG vs 475-BTB-BG 14 of 19 identical Swap Change panels

Seraphim SEG-490-BTB-BG vs Seraphim SEG-475-BTB-BG

SEG-490-BTB-BG
490 Wp 22.63 % N-type Bifacial
Open panel page Datasheet PDF
VS
SEG-475-BTB-BG
475 Wp 21.94 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

490-BTB-BG leads on the differences that matter

The largest is module efficiency: 0.69 pp more efficient. 14 of 19 comparable parameters are identical.

See all 5 differences
How alike are they
14 of 19 comparable
parameters are identical
identical differs
01

What actually differs

5 of 19 parameters
Parameter 490-BTB-BG 475-BTB-BG Difference
Module efficiency 22.63 % 21.94 % 0.69 pp more efficient
Power density 226.3 Wp/m² 219.4 Wp/m² 6.9 Wp/m² higher
Rated power 490 Wp 475 Wp 15 W more power
Cell technology N-type TOPCon N-type vs TOPCon
Annual degradation 0.34 %/yr 0.40 %/yr 0.06 %/yr slower
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
490-BTB-BG
16,475 kWh
475-BTB-BG
15,664 kWh
Lifetime gap
811 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 490-BTB-BG 475-BTB-BG
Standard test conditions 25 °C 100.0% of rated power 490 W 475 W
Cool, bright day 40 °C 95.5% of rated power 468 W 454 W
Typical summer roof 55 °C 91.0% of rated power 446 W 432 W
Hot roof 70 °C 86.5% of rated power 424 W 411 W
03

Full specification

Parameter 490-BTB-BG 475-BTB-BG Difference
Power and efficiency
Rated power 490 Wp 475 Wp +15 W for 490-BTB-BG
Module efficiency 22.63 % 21.94 % +0.69 pp for 490-BTB-BG
Power density 226.3 Wp/m² 219.4 Wp/m² +6.9 Wp/m² for 490-BTB-BG
Open-circuit voltage 43.60 V 43.00 V Effectively the same
Voltage at max power 36.40 V 35.80 V Effectively the same
Short-circuit current 14.14 A 13.94 A Effectively the same
Current at max power 13.46 A 13.27 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 1909x1134x30 mm 1909x1134x30 mm Same
Module area 2.165 m² 2.165 m² Same
Weight 27.3 kg 27.3 kg Same
Weight per kWp 55.7 kg/kWp 57.5 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.34 %/yr 0.40 %/yr -0.06 %/yr for 490-BTB-BG
Technology
Cell technology N-type TOPCon N-type vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 120 120 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,622 vs #6,751
490-BTB-BG leads by 3,129 places
Power density
#3,660 vs #6,709
490-BTB-BG leads by 3,049 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#10,113 vs #11,245
490-BTB-BG leads by 1,132 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,850 vs #8,336
490-BTB-BG leads by 1,486 places
05

More useful comparisons

Open the full database
Same series, other bin
Seraphim SEG-490-BTB-BG vs Seraphim SEG-495-BTB-BG
One difference: module efficiency
Same series, other bin
Seraphim SEG-490-BTB-BG vs Seraphim SEG-485-BTB-BG
One difference: module efficiency
Same series, other bin
Seraphim SEG-490-BTB-BG vs Seraphim SEG-480-BTB-BG
3 differences, the largest is module efficiency
Same series, other bin
Seraphim SEG-490-BTB-BG vs Seraphim SEG-470-BTB-BG
6 differences, the largest is module efficiency
Same series, other bin
Seraphim SEG-490-BTB-BG vs Seraphim SEG-465-BTB-BG
8 differences, the largest is module efficiency
Same manufacturer
Seraphim SEG-490-BTB-BG vs Seraphim SRP-730-BHC-BG
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Seraphim SEG-490-BTB-BG or Seraphim SEG-475-BTB-BG?
According to our database: Seraphim SEG-490-BTB-BG has higher module efficiency (22.63% vs 21.94%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Seraphim SEG-490-BTB-BG and Seraphim SEG-475-BTB-BG?
Seraphim SEG-490-BTB-BG has a module efficiency of 22.63%, while Seraphim SEG-475-BTB-BG is 21.94%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Seraphim SEG-490-BTB-BG use vs Seraphim SEG-475-BTB-BG?
Seraphim SEG-490-BTB-BG uses N-type cells; Seraphim SEG-475-BTB-BG uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Seraphim SEG-490-BTB-BG and Seraphim SEG-475-BTB-BG?
Seraphim SEG-490-BTB-BG has a 30 years power warranty; Seraphim SEG-475-BTB-BG has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Seraphim SEG-490-BTB-BG and Seraphim SEG-475-BTB-BG bifacial panels?
Both Seraphim SEG-490-BTB-BG and Seraphim SEG-475-BTB-BG are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

Shop prices: See 4 Seraphim offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.