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HSBK-33-735 vs NSBK-33-690 11 of 19 identical Swap Change panels

BYD HSBK-33-735 vs BYD NSBK-33-690

BYD HSBK-33-735
BYD
HSBK-33-735
735 Wp 23.66 % HJT Bifacial
Open panel page Datasheet PDF
VS
BYD NSBK-33-690
BYD
NSBK-33-690
690 Wp 22.22 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

HSBK-33-735 leads on the differences that matter

The largest is module efficiency: 1.44 pp more efficient. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter HSBK-33-735 NSBK-33-690 Difference
Module efficiency 23.66 % 22.22 % 1.44 pp more efficient
Temperature coefficient -0.240 %/°C -0.278 %/°C 0.038 %/°C better in heat
Rated power 735 Wp 690 Wp 45 W more power
Power density 236.6 Wp/m² 222.1 Wp/m² 14.5 Wp/m² higher
Weight per kWp 52.1 kg/kWp 55.5 kg/kWp 3.4 kg/kWp lighter
Cell technology HJT TOPCon HJT vs TOPCon
Open-circuit voltage 50.47 V 48.12 V 2.35 V apart
Voltage at max power 42.41 V 40.28 V 2.13 V apart
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
HSBK-33-735
24,661 kWh
NSBK-33-690
23,151 kWh
Lifetime gap
1,510 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario HSBK-33-735 NSBK-33-690
Standard test conditions 25 °C 100.0% of rated power 735 W 690 W
Cool, bright day 40 °C 95.8% of rated power 709 W 661 W
Typical summer roof 55 °C 91.7% of rated power 682 W 632 W
Hot roof 70 °C 87.5% of rated power 656 W 604 W
03

Full specification

Parameter HSBK-33-735 NSBK-33-690 Difference
Power and efficiency
Rated power 735 Wp 690 Wp +45 W for HSBK-33-735
Module efficiency 23.66 % 22.22 % +1.44 pp for HSBK-33-735
Power density 236.6 Wp/m² 222.1 Wp/m² +14.5 Wp/m² for HSBK-33-735
Open-circuit voltage 50.47 V 48.12 V 2.35 V apart
Voltage at max power 42.41 V 40.28 V 2.13 V apart
Short-circuit current 18.44 A 18.08 A Effectively the same
Current at max power 17.34 A 17.13 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.278 %/°C +0.038 %/°C for HSBK-33-735
Mechanical
Dimensions 2384x1303x33 mm 2384x1303x33 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 38.3 kg 38.3 kg Same
Weight per kWp 52.1 kg/kWp 55.5 kg/kWp -3.4 kg/kWp for HSBK-33-735
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology HJT TOPCon HJT vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#602 vs #5,753
HSBK-33-735 leads by 5,151 places
Power density
#582 vs #5,734
HSBK-33-735 leads by 5,152 places
Heat behaviour
#13 vs #1,295
HSBK-33-735 leads by 1,282 places
Weight
#5,576 vs #9,882
HSBK-33-735 leads by 4,306 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#244 vs #1,523
HSBK-33-735 leads by 1,279 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: BYD HSBK-33-735 or BYD NSBK-33-690?
According to our database: BYD HSBK-33-735 has higher module efficiency (23.66% vs 22.22%); BYD HSBK-33-735 tolerates heat better (temp coeff -0.240%/°C vs -0.278%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of BYD HSBK-33-735 and BYD NSBK-33-690?
BYD HSBK-33-735 has a module efficiency of 23.66%, while BYD NSBK-33-690 is 22.22%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does BYD HSBK-33-735 use vs BYD NSBK-33-690?
BYD HSBK-33-735 uses HJT cells; BYD NSBK-33-690 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 BYD HSBK-33-735 and BYD NSBK-33-690?
BYD HSBK-33-735 has a 30 years power warranty; BYD NSBK-33-690 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 BYD HSBK-33-735 and BYD NSBK-33-690 bifacial panels?
Both BYD HSBK-33-735 and BYD NSBK-33-690 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.

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.