---
title: "Suntech STP435S-H48-Nfb 435W Solar Panel - Specs & Review | ComparePV"
description: "Suntech STP435S-H48-Nfb 435W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient."
source: "https://comparepv.com/panel/suntech-stp435s-h48-nfb"
updated: 2026-09-11
---

# Suntech STP435S-H48-Nfb

Solid all-round for its segment

1,218 panels in the segment TOPCon 400-450 W


## Identity

- **Manufacturer:** Suntech
- **Model:** STP435S-H48-Nfb
- **Series:** Ultra V Pro mini (Half-cell N-Type TOPCon, full-black single glass monofacial)
- **Rated power:** 435 W
- **Cell technology:** TOPCon


## How it compares

Compared against segment TOPCon 400-450 W (1218 panels).


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Power (Wp) | 435 W | 435 W | Typical |  |
| Module efficiency | 21.80% | 22.00% | Typical | 7,022 |
| Power density | 217.7 | 220.2 | Typical | 7,066 |
| Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 |
| Weight (kg) | 21.5 kg | 22.0 kg | Typical |  |
| Performance warranty | 30 yrs | 30 yrs | Typical | 21 |


### Full peer table


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Module efficiency | 21.80% | 22.00% | Typical | 7,022 |
| Power density | 217.7 | 220.2 | Typical | 7,066 |
| Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 |
| Weight per kWp | 49.4 | 51.4 | Typical | 2,936 |
| Performance warranty | 30 yrs | 30 yrs | Typical | 21 |

- **Best for:** Residential, commercial and shaded-installations.


## Specification


### Electrical

- **Rated power (Pmax):** 435 W
- **Efficiency:** 21.80 %
- **Voltage at Pmax (Vmp):** 28.79 V
- **Current at Pmax (Imp):** 15.11 A
- **Open-circuit voltage (Voc):** 35.08 V
- **Short-circuit current (Isc):** 15.77 A
- **Max system voltage:** 1500 V


### Temperature

- **Temperature coefficient of Pmax:** -0.290 %/degC
- **Temperature coefficient of Voc:** -0.250 %/degC
- **Temperature coefficient of Isc:** 0.046 %/degC
- **NOCT:** 42 degC


### Cell and construction

- **Cell type:** Monocrystalline
- **Cell technology:** TOPCon
- **Cell count:** 96


### Physical

- **Length:** 1762 mm
- **Width:** 1134 mm
- **Thickness:** 30 mm
- **Weight:** 21.5 kg
- **Area:** 2.00 m2
- **Power density:** 217.7 Wp/m2


### Warranty and degradation

- **Product warranty:** 25 years
- **Performance warranty:** 30 years
- **Output guaranteed at end of warranty:** 87.4 %
- **First-year degradation:** 1.00 %
- **Annual degradation:** 0.40 %
- **Output after 30 years:** 380 W


## Rank in the whole catalogue


| Measure | Position |
| --- | --- |
| Efficiency | 7022 of 14005 |
| Power density | 7066 of 14005 |
| Temperature coefficient | 2165 of 14005 |
| Weight | 2936 of 14005 |
| Warranty | 21 of 14005 |


## About this series

The Suntech Ultra V Pro Mini series in the **Half-cell N-Type TOPCon** version is designed for maximum energy production from limited rooftop surfaces, without compromising on aesthetics. The use of N-Type TOPCon cells ensures highly stable performance over time and minimizes typical light degradation-related losses, translating to predictable yields over years. The half-cell design improves module performance during partial shading and thermal stress, while simultaneously supporting higher connection reliability within the panel.

The **full-black** variant is the choice for investors seeking a discreet installation that visually harmonizes with modern architecture. At the same time, it is a **single glass monofacial** module - practical where low weight, simpler installation, and compatibility with popular roofing systems matter.

The Ultra V Pro Mini excels particularly in residential and commercial installations on pitched and flat roofs - ideal for homeowners seeking **high efficiency** in a smaller footprint, reliable performance in low-light conditions, and TOPCon technology in the premium segment.


## Notable figures

- 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
- #7022 for efficiency, #2165 for temperature performance out of 14005 panels


## Questions


### What is the maximum power output of the Suntech Ultra V Pro mini panel?

Modules from the Ultra V Pro mini series reach a maximum power of up to 450 Wp. This is an excellent result for a smaller-format module, achieved through N-Type TOPCon half-cell cell technology, which reduces energy losses and improves conversion efficiency compared to older PERC technology.


### How does TOPCon technology differ from PERC in Suntech panels?

N-Type TOPCon cells have a lower degradation rate over time and are less susceptible to LID (light-induced degradation) compared to conventional P-Type PERC cells. As a result, the Ultra V Pro mini panel maintains higher and more stable energy output throughout its service life, translating into genuinely higher yields over the long term.


### What warranty comes with the Suntech Ultra V Pro mini panels?

The manufacturer provides a 25-year product warranty along with a 30-year power performance warranty. This means Suntech commits to maintaining an adequate level of energy output over three decades, making it one of the longer warranty periods currently available among premium-class photovoltaic panels.


### Is the full-black Ultra V Pro mini panel suitable for a pitched roof?

Yes, the full-black variant in a single glass monofacial construction is lighter than dual-glass bifacial modules, making installation easier on typical pitched roof trusses. The uniform black appearance blends well with dark roofing materials, giving the installation a discreet look that doesn't stand out visually on the building facade.


### Do Ultra V Pro mini panels perform well under partial shading?

The half-cell design splits cells into smaller segments, so shading part of the panel, for instance from a chimney or antenna, causes a smaller drop in overall module power compared to full-cell panels. Reduced current and thermal losses also contribute to longer service life of the panel's internal connections.


### Is Suntech a tier 1 manufacturer, and where are Ultra V Pro mini panels made?

Yes, Suntech is classified as a tier 1 manufacturer, meaning it has a solid financial standing and years of experience producing photovoltaic panels at an industrial scale. Manufacturing facilities are located in China, and the brand has long featured in Bloomberg NEF rankings among the most bankable PV module suppliers worldwide.


## Datasheet

[Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/127807879167db93e942f44-d7f299ba55d6.pdf)


## Alternatives


| Panel | Power | How it differs |
| --- | --- | --- |
| [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +50 W, cooler, +2.5 pp |
| [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +50 W, cooler, +2.5 pp |
| [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +50 W, cooler, +2.5 pp |
| [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +50 W, cooler, +2.5 pp |
| [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +50 W, cooler, +2.5 pp |
| [Suntech STP430S-H48-Nfb](https://comparepv.com/panel/suntech-stp430s-h48-nfb) | 430 W | -0.3 pp |
| [Suntech STP440S-H48-Nfb](https://comparepv.com/panel/suntech-stp440s-h48-nfb) | 440 W | Very close match |
| [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +75 W, cooler, +3.2 pp |
| [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +60 W, cooler, +3.0 pp |
| [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +70 W, cooler, +2.9 pp |
| [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +55 W, cooler, +2.7 pp |
| [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +65 W, cooler, +2.7 pp |
| [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +65 W, cooler, +2.7 pp |


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Source: https://comparepv.com/panel/suntech-stp435s-h48-nfb

Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.