Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-390-COM
VS
The verdict
430-R leads on the differences that matter
The largest is rated power: 40 W more power. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
430-R
390-COM
Difference
Rated power
430 Wp
390 Wp
40 W more power
Module efficiency
22.70 %
22.10 %
0.60 pp more efficient
Power density
226.9 Wp/m²
220.6 Wp/m²
6.3 Wp/m² higher
Open-circuit voltage
40.70 V
75.30 V
34.60 V apart
Short-circuit current
13.15 A
6.55 A
6.60 A apart
Module area
1.895 m²
1.768 m²
0.128 m² apart
Weight
21.2 kg
19.0 kg
2.2 kg lighter
Voltage at max power
35.10 V
64.50 V
29.40 V apart
Current at max power
12.25 A
6.05 A
6.20 A apart
Cell count
112
104
8 cells apart
Dimensions
1812x1046x40 mm
1690x1046x40 mm
1812x1046x40 mm vs 1690x1046x40 mm
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 (-0.270 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
430-R
14,609 kWh
390-COM
13,250 kWh
Lifetime gap
1,359 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
430-R
390-COM
Standard test conditions
25 °C
100.0% of rated power
430 W
390 W
Cool, bright day
40 °C
96.0% of rated power
413 W
374 W
Typical summer roof
55 °C
91.9% of rated power
395 W
358 W
Hot roof
70 °C
87.8% of rated power
378 W
343 W
03
Full specification
Parameter
430-R
390-COM
Difference
Power and efficiency
Rated power
430 Wp
390 Wp
+40 W for 430-R
Module efficiency
22.70 %
22.10 %
+0.60 pp for 430-R
Power density
226.9 Wp/m²
220.6 Wp/m²
+6.3 Wp/m² for 430-R
Open-circuit voltage
40.70 V
75.30 V
34.60 V apart
Voltage at max power
35.10 V
64.50 V
29.40 V apart
Short-circuit current
13.15 A
6.55 A
6.60 A apart
Current at max power
12.25 A
6.05 A
6.20 A apart
Temperature
Temperature coefficient
-0.270 %/°C
-0.270 %/°C
Same
Mechanical
Dimensions
1812x1046x40 mm
1690x1046x40 mm
1812x1046x40 mm vs 1690x1046x40 mm
Module area
1.895 m²
1.768 m²
0.128 m² apart
Weight
21.2 kg
19.0 kg
-2.2 kg for 390-COM
Weight per kWp
49.3 kg/kWp
48.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
40 yrs
40 yrs
Same
Performance warranty
40 yrs
40 yrs
Same
Annual degradation
0.25 %/yr
0.25 %/yr
Same
Technology
Cell technology
Back Contact
Back Contact
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
112
104
8 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#3,307
vs
#6,012
430-R leads by 2,705 places
Power density
#3,463
vs
#6,156
430-R leads by 2,693 places
Heat behaviour
#1,280
vs
#1,280
Tied - the same position in the database
Weight
#2,855
vs
#2,430
390-COM leads by 425 places
Warranty
#1
vs
#1
Tied - the same position in the database
Overall
#1,774
vs
#3,453
430-R leads by 1,679 places
05
Open the full database
More useful comparisons
Same series, other bin
Maxeon
Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-425-R
One difference: module efficiency
Same series, other bin
Maxeon
Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-415-R
3 differences, the largest is module efficiency
Same series, other bin
Maxeon
Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-400-COM
9 differences, the largest is rated power
Same series, other bin
Maxeon
Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-380-COM
11 differences, the largest is module efficiency
Same series, other bin
Maxeon
Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-375-BLK
11 differences, the largest is module efficiency
Same series, other bin
Maxeon
Maxeon SPR-MAX3-430-R vs Maxeon SPR-MAX3-370-COM
14 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Maxeon SPR-MAX3-430-R or Maxeon SPR-MAX3-390-COM?
According to our database: Maxeon SPR-MAX3-430-R has higher module efficiency (22.70% vs 22.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Maxeon SPR-MAX3-430-R and Maxeon SPR-MAX3-390-COM?
Maxeon SPR-MAX3-430-R has a module efficiency of 22.70%, while Maxeon SPR-MAX3-390-COM is 22.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Maxeon SPR-MAX3-430-R use vs Maxeon SPR-MAX3-390-COM?
Maxeon SPR-MAX3-430-R uses Back Contact cells; Maxeon SPR-MAX3-390-COM uses Back Contact. 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 Maxeon SPR-MAX3-430-R and Maxeon SPR-MAX3-390-COM?
Maxeon SPR-MAX3-430-R has a 40 years power warranty; Maxeon SPR-MAX3-390-COM has a 40 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.
Shop prices: See 26 Maxeon 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.