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Suntech STP435S-H48-Nkh+
Suntech Brand review

STP435S-H48-Nkh+

435 Wp TOPCon
ComparePV verdict

Solid all-round for its segment

Rank 9,672 of 14,129
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
21.80
Typical · median 22.00%
Density (Wp/m²)
217.7
Typical · median 220.2
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
21.5
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

Suntech Ultra V Pro mini (STPXXXS-H48-Nkh+) series was designed with a focus on high power density, while maintaining a convenient format for installation teams. The modules utilize N-type TOPCon cells, resulting in more stable performance over time and better resistance to common degradation mechanisms found in older technologies. The application of the half-cut architecture helps minimize module losses and improves performance under partial shading - crucial for rooftops with vents, chimneys, or HVAC installations.

Practically, this series addresses two common issues: maximizing yield on limited roof space and mitigating production drops during hot days, thanks to its favorable temperature coefficient typical for TOPCon modules. Additionally, the extended linear power warranty facilitates long-term investment planning.

The Ultra V Pro mini series will perform exceptionally well in modern residential and small commercial installations, where reliability, predictable power output, and fast, high-quality installation without compromises are key.

Ranking

1,220 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.80% 22.00% Typical 7,085
Power density 217.7 220.2 Typical 7,129
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 49.4 51.5 Typical 2,943
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 21.8% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • At 217.7 W/m² power density, roof space requirements are typical for TOPCon 400-450W panels
  • At -0.29%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • Ranked #7085 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.80 % Typical Segment median 22.00%
Vmpp · Impp 28.79 V · 15.11 A Operating point at max power
Voc · Isc 35.08 V · 15.77 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 21.5 kg Typical Typical · median 22.0 kg
Cells 96 · TOPCon Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 380 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Suntech in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 435 Wp appear here. The rest cover the whole series.

Current-Voltage and Power-Voltage Curves at Various Irradiance Levels Current-Voltage and Power-Voltage Curves at Various Irradiance Levels 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
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Suntech STP435S-H48-Nkh+ 435 W 21.80% -0.290 21.5 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, cooler, +2.5 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +2.5 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, cooler, +2.5 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +2.5 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, cooler, +2.5 pp
STP430S-H48-Nfb 430 W 21.50% -0.290 21.5 kg -0.3 pp
STP440S-H48-Nfb 440 W 22.00% -0.290 21.5 kg Very close match
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +75 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +60 W, cooler, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +70 W, cooler, +2.9 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +70 W, heavier, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +55 W, cooler, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +65 W, cooler, +2.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +65 W, cooler, +2.7 pp

Found 1402 panels of the same or similar size to this one, within ±10 mm. See them here Found 1432 panels of the same or similar size to this one, within ±25 mm. See them here Found 3651 panels of the same or similar size to this one, within ±50 mm. See them here Found 3999 panels of the same or similar size to this one, within ±100 mm. See them here

About the Ultra V Pro mini (STPXXXS-H48-Nkh+) series

6 answered

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

What is the maximum power output of the Suntech Ultra V Pro mini (STPXXXS-H48-Nkh+) panels?
The Ultra V Pro mini series reaches up to 445 Wp of maximum power output. This is a strong result for a 48 half-cut cell format, thanks to N-type TOPCon technology, which delivers higher conversion efficiency than older PERC cells at a comparable module size.
How does TOPCon technology in the Suntech Ultra V Pro mini differ from standard PERC panels?
N-type TOPCon cells feature an additional passivation layer that reduces recombination losses and power loss over time. In practice, this means higher efficiency, a better temperature coefficient, and slower annual degradation compared to conventional P-type PERC panels, resulting in higher lifetime energy yield for the installation.
What warranty comes with Suntech Ultra V Pro mini panels?
Suntech offers a 15-year product warranty and a 30-year linear power warranty on this module. Such an extended power warranty period is typical for TOPCon panels and helps investors plan project profitability over a long time horizon, especially when financing or leasing a solar installation.
Do Ultra V Pro mini panels perform well in summer under high roof temperatures?
Yes, the TOPCon modules in this series have a favorable power temperature coefficient, limiting output drops during heat waves compared to older cell technologies. This helps the installation maintain higher efficiency in summer, when roof and panel surface temperatures rise significantly.
Is Suntech Ultra V Pro mini suitable for roofs with partial shading, such as near chimneys or dormers?
Yes, the half-cut cell architecture splits each cell in half, reducing power losses under partial shading and limiting the impact of a single shaded cell on the whole module. This is especially useful on roofs with chimneys, dormers, or HVAC units, where shadows fall on only part of the roof surface.
Are Suntech Ultra V Pro mini panels bifacial?
No, the Ultra V Pro mini series consists of monofacial modules, not designed to generate power from the rear side. This makes it well suited to typical rooftop installations, where the bifacial gain would be minimal and the priority is high power density in a standard format.
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