Hyundai HiS-T635NJ vs Hyundai HiT-H440LE-FB(ZB)
VS
The verdict
16 differences, and they point both ways
The largest is temperature coefficient: 0.050 %/°C better in heat. 3 of 19 comparable parameters are identical.
See all 16 differencesHow alike are they
3
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
16 of 19 parameters
What actually differs
Parameter
HiS-T635NJ
HiT-H440LE-FB(ZB)
Difference
Temperature coefficient
-0.290 %/°C
-0.240 %/°C
0.050 %/°C better in heat
Module efficiency
22.72 %
22.00 %
0.72 pp more efficient
Rated power
635 Wp
440 Wp
195 W more power
Weight
34.7 kg
21.6 kg
13.1 kg lighter
Product warranty
12 yrs
30 yrs
18 yrs longer
Power density
227.2 Wp/m²
220.2 Wp/m²
7.0 Wp/m² higher
Weight per kWp
54.6 kg/kWp
49.1 kg/kWp
5.6 kg/kWp lighter
Annual degradation
0.40 %/yr
0.30 %/yr
0.10 %/yr slower
Open-circuit voltage
57.56 V
36.52 V
21.04 V apart
Module area
2.795 m²
1.998 m²
0.797 m² apart
Short-circuit current
13.98 A
15.31 A
1.33 A apart
Cell technology
TOPCon
HJT
TOPCon vs HJT
Voltage at max power
47.57 V
30.61 V
16.96 V apart
Cell count
156
96
60 cells apart
Current at max power
13.35 A
14.38 A
1.03 A apart
Dimensions
2465x1134x30 mm
1762x1134x30 mm
2465x1134x30 mm vs 1762x1134x30 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
HiS-T635NJ
21,306 kWh
HiT-H440LE-FB(ZB)
14,993 kWh
Lifetime gap
6,313 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
HiS-T635NJ
HiT-H440LE-FB(ZB)
Standard test conditions
25 °C
100.0% of rated power
635 W
440 W
Cool, bright day
40 °C
95.7% of rated power
607 W
424 W
Typical summer roof
55 °C
91.3% of rated power
580 W
408 W
Hot roof
70 °C
87.0% of rated power
552 W
392 W
03
Full specification
Parameter
HiS-T635NJ
HiT-H440LE-FB(ZB)
Difference
Power and efficiency
Rated power
635 Wp
440 Wp
+195 W for HiS-T635NJ
Module efficiency
22.72 %
22.00 %
+0.72 pp for HiS-T635NJ
Power density
227.2 Wp/m²
220.2 Wp/m²
+7.0 Wp/m² for HiS-T635NJ
Open-circuit voltage
57.56 V
36.52 V
21.04 V apart
Voltage at max power
47.57 V
30.61 V
16.96 V apart
Short-circuit current
13.98 A
15.31 A
1.33 A apart
Current at max power
13.35 A
14.38 A
1.03 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.240 %/°C
+0.050 %/°C for HiT-H440LE-FB(ZB)
Mechanical
Dimensions
2465x1134x30 mm
1762x1134x30 mm
2465x1134x30 mm vs 1762x1134x30 mm
Module area
2.795 m²
1.998 m²
0.797 m² apart
Weight
34.7 kg
21.6 kg
-13.1 kg for HiT-H440LE-FB(ZB)
Weight per kWp
54.6 kg/kWp
49.1 kg/kWp
-5.6 kg/kWp for HiT-H440LE-FB(ZB)
Warranty and degradation
Product warranty
12 yrs
30 yrs
+18 yrs for HiT-H440LE-FB(ZB)
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.30 %/yr
-0.10 %/yr for HiT-H440LE-FB(ZB)
Technology
Cell technology
TOPCon
HJT
TOPCon vs HJT
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
96
60 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#3,245
vs
#6,517
HiS-T635NJ leads by 3,272 places
Power density
#3,252
vs
#6,328
HiS-T635NJ leads by 3,076 places
Heat behaviour
#2,165
vs
#13
HiT-H440LE-FB(ZB) leads by 2,152 places
Weight
#9,020
vs
#2,739
HiT-H440LE-FB(ZB) leads by 6,281 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#2,358
vs
#5,958
HiS-T635NJ leads by 3,600 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Hyundai HiS-T635NJ or Hyundai HiT-H440LE-FB(ZB)?
According to our database: Hyundai HiS-T635NJ has higher module efficiency (22.72% vs 22.00%); Hyundai HiT-H440LE-FB(ZB) tolerates heat better (temp coeff -0.240%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Hyundai HiS-T635NJ and Hyundai HiT-H440LE-FB(ZB)?
Hyundai HiS-T635NJ has a module efficiency of 22.72%, while Hyundai HiT-H440LE-FB(ZB) is 22.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Hyundai HiS-T635NJ use vs Hyundai HiT-H440LE-FB(ZB)?
Hyundai HiS-T635NJ uses TOPCon cells; Hyundai HiT-H440LE-FB(ZB) uses HJT. 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 Hyundai HiS-T635NJ and Hyundai HiT-H440LE-FB(ZB)?
Hyundai HiS-T635NJ has a 30 years power warranty; Hyundai HiT-H440LE-FB(ZB) 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 Hyundai HiS-T635NJ and Hyundai HiT-H440LE-FB(ZB) bifacial panels?
Both Hyundai HiS-T635NJ and Hyundai HiT-H440LE-FB(ZB) 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 42 Hyundai 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.