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VSUN Brand review

VSUN425N-108MH-BB

425 Wp TOPCon Bifacial
ComparePV verdict

Solid all-round for its segment

Rank 10,118 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
22.00
Typical · median 22.00%
Density (Wp/m²)
217.6
Typical · median 220.2
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
21.4
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The VSUN VSUN430N-108MH-BB series is designed for high productivity from every meter of roof space and stable performance for years - without unexpected issues after a few seasons. The use of N-type cells in TOPCon technology helps to minimize losses due to degradation and maintain better efficiency in demanding conditions. In practice, this means more predictable yields, even in hot weather, when many standard modules noticeably lose performance.

The bifacial design is also noteworthy, as it can utilize light reflected from the ground - a real advantage on bright roofs, in ground-mounted installations, and with appropriately designed mounting structures. Thanks to MBB with circular ribbon technology, the panel performs better with partial shading and microcracks, and PID resistance increases the safety of investments with long strings and modern inverters. This is a series for installers and investors who expect quality, full black aesthetics, and precise performance in real-world conditions.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.00% 22.00% Typical 6,517
Power density 217.6 220.2 Typical 7,172
Temperature coefficient -0.300 -0.290 Typical 6,093
Weight per kWp 50.4 51.4 Typical 3,723
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, commercial, shaded-installations and hot-climate.

Notes from the database
  • At 22.0% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • Power density of 217.6 W/m² matches the TOPCon 400-450W median
  • At -0.30%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • In the top 47% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.00 % Typical Segment median 22.00%
Vmpp · Impp 31.72 V · 13.46 A Operating point at max power
Voc · Isc 38.40 V · 14.14 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.4 kg Typical Typical · median 22.0 kg
Cells 216 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.046 %/°C
NOCT 45 °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 371 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by VSUN in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 425 Wp appear here. The rest cover the whole series.

I-V Curves at Different Irradiance Levels (25°C) I-V Curves at Different Irradiance Levels (25°C) Whole series 30-Year Linear Power Warranty (Munich RE Certified) 30-Year Linear Power Warranty (Munich RE Certified) 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
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
VSUN VSUN425N-108MH-BB 425 W 22.00% -0.300 21.4 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.0 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, +1.8 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, cooler, +1.8 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, heavier, +1.8 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, heavier, +1.8 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, cooler, +1.8 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, cooler, +1.8 pp
VSUN390-108BMH-DG 390 W 19.97% -0.320 24.7 kg -35 W, heavier, -2.0 pp
VSUN395-108BMH-DG 395 W 20.23% -0.320 24.7 kg -30 W, heavier, -1.8 pp
VSUN400-108BMH-DG 400 W 20.48% -0.320 24.7 kg -25 W, heavier, -1.5 pp
VSUN405-108BMH-DG 405 W 20.74% -0.320 24.7 kg Hotter, heavier, -1.3 pp
VSUN410-108BMH 410 W 21.00% -0.320 21.4 kg -15 W, hotter, -1.0 pp
VSUN415N-108MH 415 W 21.25% -0.300 21.4 kg -10 W, -0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, cooler, +3.0 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +70 W, cooler, +2.8 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +80 W, cooler, +2.7 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does the N-type TOPCon technology in the VSUN430N-108MH-BB differ from standard PERC cells?
N-type TOPCon cells have a different silicon structure than the popular PERC cells, giving them slower degradation and better performance in high roof temperatures during summer. In practice, the panel loses less power in the first year (about 1%) and less annually afterward (about 0.4%), resulting in higher energy yields over a 25-30 year lifespan compared to classic PERC modules.
Is the VSUN430N-108MH-BB a bifacial panel, and how much extra energy can it produce?
Yes, the module has a bifacial design and can generate power from its rear side as well, capturing light reflected from the roof, ground, or a light-colored facade. The actual gain depends on the surroundings - on light-colored surfaces, gravel, or white roofing membrane it can add anywhere from a few to over ten percent more annual energy compared to a monofacial module of the same 430 Wp rating.
What warranty comes with the VSUN430N-108MH-BB panels, and what does it cover?
The manufacturer provides a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. In practice, this means power may drop by no more than 1% after the first year, and by no more than 0.4% annually thereafter, ensuring strong performance even after three decades of operation.
Is VSUN a Tier 1 manufacturer, and are its panels trustworthy?
VSUN is not currently on the Bloomberg Tier 1 list, but it is a well-established manufacturer with European headquarters in Germany and its own gigawatt-scale production facilities. Lacking Tier 1 status doesn't necessarily mean lower quality - it's often a matter of financing criteria rather than technology. It's worth focusing on actual specifications, warranties, and certifications rather than the ranking alone.
Are VSUN430N-108MH-BB panels suitable for a pitched roof on a single-family home?
Yes, the series is designed for pitched roof, flat roof, and ground-mounted installations alike. The full-black aesthetic pairs well with typical roof tiles, and the MBB circular ribbon technology improves resistance to partial shading from chimneys or antennas, a common issue on single-family homes.
What is PID resistance in the VSUN430N-108MH-BB, and why does it matter?
PID (Potential Induced Degradation) is power loss caused by voltage differences in longer panel strings, common with modern transformerless inverters. The VSUN430N-108MH-BB is PID-resistant, allowing installers to design longer strings without risking premature performance loss, giving more design flexibility and better long-term investment security.
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