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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

The Suntech Ultra V Pro mini (STPXXXS-H48-Nkh) series are compact modules designed to optimally utilize roof surfaces without compromising performance. Their key advantage lies in the N-type TOPCon cell technology, which ensures stable operation over time and better resilience under demanding operating conditions. The "mini" format facilitates adaptation to complex roof pitches - especially where conventional, larger panels hinder optimal string layouts and leave unused mounting areas.

The H48-Nkh variant features a dual-glass construction, valued for its enhanced resistance to atmospheric factors and greater stiffness during installation. This is a tangible benefit for installers and investors seeking trouble-free operation for years to come. Additionally, the series offers aesthetic appeal suitable for modern roofs - a particularly attractive solution for single-family homes and premium projects.

This is an excellent choice for those wishing to combine high efficiency in a compact format with predictable module performance, even in rooftop installations with limited load-bearing capacity and non-standard geometries.

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.

Notes from the database
  • At 21.8% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • Power density of 217.7 W/m² matches the TOPCon 400-450W median
  • At -0.29%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • #7085 for efficiency, #2220 for temperature performance out of 14129 panels

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

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.

Are Suntech Ultra V Pro mini (STPXXXS-H48-Nkh) panels suitable for small or irregularly shaped roofs?
Yes, this is the main advantage of this series. The 'mini' format was designed to better fit complex roof sections, dormers, and slopes, where standard larger panels would leave unused installation space. This allows more modules to be fitted, achieving higher installed capacity on limited roof area, which is especially valuable for single-family homes with non-standard roof geometry.
What is N-type TOPCon cell technology in Suntech Ultra V Pro mini panels, and is it worth the extra cost?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces energy losses within the cell and helps the panel maintain higher efficiency throughout its lifespan. In practice, this means lower year-over-year power degradation compared to older P-type technologies, as well as more stable performance at high temperatures. For investors, this translates into higher real energy yield over a 20-30 year period, justifying the small price premium.
What warranty comes with the Suntech Ultra V Pro mini H48-Nkh modules?
The manufacturer offers a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means that even after 30 years of operation, the panel should still produce energy at the guaranteed level specified in the datasheet. Suntech is a Tier-1 manufacturer, which further increases the reliability of warranty service on the European market.
How does the dual-glass construction of the H48-Nkh variant differ from standard glass-backsheet panels?
Dual-glass construction means glass is used on both sides of the module instead of the typical glass-backsheet layup. This design increases mechanical rigidity, improves resistance to moisture, corrosion, and extreme weather conditions, and reduces the risk of microcracks during transport and installation. For installers, this means fewer warranty claims, and for investors, longer trouble-free operation of the system.
How much energy can I get from a 455 Wp Suntech Ultra V Pro mini panel?
A 455 Wp panel under typical Polish irradiance conditions (approximately 1000-1100 kWh/kWp per year) will generate roughly 450-500 kWh of energy annually, depending on tilt angle, orientation, and roof shading. Thanks to TOPCon technology, the panel maintains high efficiency even at higher temperatures, limiting output drops during hot summer days compared to older cell technologies.
Are Suntech Ultra V Pro mini panels bifacial?
No, the Ultra V Pro mini H48-Nkh series consists of monofacial panels, generating energy only from the front side of the module. This works well for standard roof-mounted installations, where the panel lies flat on the structure without access to reflected light from behind. For ground-mount installations or elevated racking systems with light access from below, a bifacial model from another Suntech series would be a better fit.
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