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Yingli Brand review

LF620M10N-66H/BF

620 Wp N-type Bifacial 2000%
ComparePV verdict

Solid all-round for its segment

Rank 2,555 of 14,129
Compare panels Datasheet PDF
Power (Wp)
620
Typical for its class
Efficiency (%)
23.00
Typical · median 22.77%
Density (Wp/m²)
229.5
Typical · median 227.7
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
32.5
Typical · median 32.8 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Yingli N-type series introduces a new quality to photovoltaic installations thanks to the use of advanced TOPCon cell technology, which effectively eliminates the phenomenon of LID and LeTID degradation. The use of n-type silicon ensures that these modules are characterized by significantly higher resistance to high temperatures and excellent performance in low light conditions, which is crucial in the Polish climate. The innovative design provides a better bifaciality factor, allowing for energy generation also from the rear side of the cell. By choosing this solution, investors gain higher energy efficiency on limited roof space, which directly translates to a faster return on investment. This series is dedicated to both demanding residential prosumers and large solar farms, where maximizing yields over the entire system life cycle matters. Thanks to this, users can enjoy trouble-free operation of the installation for decades, minimizing service and operational costs. It is distinguished from the competition by its exceptional power stability over a long period of operation and optimized performance in partial shading conditions. This is a substantive response to the needs of a market looking for products with an extended technical lifespan that do not lose their parameters as quickly as traditional p-type panels.

Ranking

368 panels in the segment N-type 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.00% 22.77% Typical 1,970
Power density 229.5 227.7 Typical 2,243
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 52.4 52.8 Typical 5,938
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 · 0 caution
Best for

Residential, utility-scale and shaded-installations.

Notes from the database
  • Efficiency of 23.0% matches the N-type 600-650W median
  • At 229.5 W/m² power density, roof space requirements are typical for N-type 600-650W panels
  • Temperature coefficient of -0.29%/°C matches the N-type 600-650W median
  • Ranked #1970 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 620 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.00 % Typical Segment median 22.77%
Vmpp · Impp 40.91 V · 15.16 A Operating point at max power
Voc · Isc 49.22 V · 16.06 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2382×1134×30 mm · 2.70 m² of roof
Weight 32.5 kg Typical Typical · median 32.8 kg
Cells 132 · N-type Monocrystalline
Bifaciality 2000 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 542 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Yingli in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 620 Wp appear here. The rest cover the whole series.

Linear Performance Warranty Linear Performance Warranty Whole series I-V Curves I-V Curves 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
-0.290 %/°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
Yingli LF620M10N-66H/BF 620 W 23.00% -0.290 32.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +30 W, lighter, +2.2 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +2.0 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +50 W, lighter, +1.8 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +50 W, lighter, +1.8 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +1.8 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +50 W, cooler, +1.8 pp
LF610M10N-66H/BF 610 W 22.60% -0.290 32.5 kg -10 W, -0.4 pp
LF615M10N-66H/BF 615 W 22.80% -0.290 32.5 kg Very close match
YL625CF66 i/2 625 W 23.10% -0.290 32.0 kg Very close match
YL630CF66 i/2 630 W 23.30% -0.290 32.0 kg +10 W, +0.3 pp
YL635CF66 i/2 635 W 23.50% -0.290 32.0 kg +15 W, +0.5 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +60 W, lighter, +2.2 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +55 W, lighter, +2.0 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +80 W, cooler, +2.0 pp
WST-675BKX72-A2 675 W 25.00% -0.260 32.1 kg +55 W, cooler, +2.0 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +75 W, cooler, +1.9 pp

Found 1144 panels of the same or similar size to this one, within ±10 mm. See them here Found 1150 panels of the same or similar size to this one, within ±25 mm. See them here Found 1261 panels of the same or similar size to this one, within ±50 mm. See them here Found 1942 panels of the same or similar size to this one, within ±100 mm. See them here

About the N-type series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

How much power does the Yingli N-type panel generate and how much roof space will the installation need?
Modules from the Yingli N-type series reach up to 625 Wp, one of the higher outputs on the market. This means fewer panels are needed to reach a given system size compared to classic p-type modules. That's important on limited roof space, as it lets you fit more power into a smaller area and reduce mounting structure costs.
How does the TOPCon technology used in Yingli N-type differ from standard PERC panels?
TOPCon technology uses n-type silicon instead of p-type, which eliminates LID and LeTID degradation typical of older PERC panels. N-type cells better withstand high temperatures and perform more efficiently in low-light conditions, such as overcast days. In practice, this means higher annual energy yield than comparable p-type panels.
Are Yingli N-type panels bifacial, and how much extra energy does that provide?
Yes, the N-type series is bifacial, meaning the rear side of the module also generates electricity using light reflected off the ground. Depending on the surface beneath the installation (e.g., light-colored gravel or a white roof membrane), the extra yield can range from a few to over ten percent, especially on ground-mount systems or carports with clearance underneath.
What is the warranty on Yingli N-type panels, and is it reliable?
Yingli offers a 12-year product warranty and a 30-year power output warranty, consistent with the current standard for premium n-type panel series. Yingli is a tier-1 manufacturer with a long track record, which adds real-world confidence to a long-term warranty compared to lesser-known brands.
Will Yingli N-type panels perform well in low-light or overcast conditions?
Yes, this is one of the series' main advantages. N-type TOPCon cells handle diffuse and low-intensity light better than traditional p-type panels, which matters in climates with many overcast days. Additionally, a lower temperature coefficient limits power losses in summer when panels heat up.
Is the Yingli N-type series suitable for both residential rooftops and large solar farms?
Yes, the module design targets both applications. High single-panel wattage and long-term performance stability suit residential rooftop installations, while the bifacial design and shading tolerance make this series attractive for utility-scale solar farms focused on maximizing energy yield.
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