--- title: "Hyundai HiS-T635NJ vs Hyundai HiN-T435NF(BK) - Solar Panel Comparison | ComparePV" description: "Compare Hyundai HiS-T635NJ vs Hyundai HiN-T435NF(BK) side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t635nj/hyundai-hin-t435nf-bk" updated: 2026-09-11 --- # Hyundai HiS-T635NJ vs Hyundai HiN-T435NF(BK) HiS-T635NJ leads on the differences that matter The largest is rated power: 200 W more power. 8 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Hyundai HiS-T635NJ](https://comparepv.com/panel/hd-hyundai-energy-solutions-his-t635nj) | [Hyundai HiN-T435NF(BK)](https://comparepv.com/panel/hyundai-hin-t435nf-bk) | | Manufacturer | Hyundai | Hyundai | | Power | 635 Wp | 435 Wp | | Efficiency | 22.72 % | 22.28 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | HiS-T635NJ | HiN-T435NF(BK) | Difference | | --- | --- | --- | --- | | Rated power | 635 Wp | 435 Wp | +200 W for HiS-T635NJ | | Weight | 34.7 kg | 24.5 kg | -10.2 kg for HiN-T435NF(BK) | | Product warranty | 12 yrs | 25 yrs | +13 yrs for HiN-T435NF(BK) | | Module efficiency | 22.72 % | 22.28 % | +0.44 pp for HiS-T635NJ | | Open-circuit voltage | 57.56 V | 38.60 V | 18.96 V apart | | Module area | 2.795 m² | 1.953 m² | 0.843 m² apart | | Power density | 227.2 Wp/m² | 222.8 Wp/m² | +4.4 Wp/m² for HiS-T635NJ | | Temperature coefficient | -0.290 %/°C | -0.300 %/°C | +0.010 %/°C for HiS-T635NJ | | Voltage at max power | 47.57 V | 32.10 V | 15.47 V apart | | Cell count | 156 | 108 | 48 cells apart | | Dimensions | 2465x1134x30 mm | 1722x1134x30 mm | 2465x1134x30 mm vs 1722x1134x30 mm | ## Every compared parameter | Parameter | HiS-T635NJ | HiN-T435NF(BK) | | --- | --- | --- | | Rated power | 635 Wp | 435 Wp | | Module efficiency | 22.72 % | 22.28 % | | Power density | 227.2 Wp/m² | 222.8 Wp/m² | | Open-circuit voltage | 57.56 V | 38.60 V | | Voltage at max power | 47.57 V | 32.10 V | | Short-circuit current | 13.98 A | 14.32 A | | Current at max power | 13.35 A | 13.56 A | | Temperature coefficient | -0.290 %/°C | -0.300 %/°C | | Dimensions | 2465x1134x30 mm | 1722x1134x30 mm | | Module area | 2.795 m² | 1.953 m² | | Weight | 34.7 kg | 24.5 kg | | Weight per kWp | 54.6 kg/kWp | 56.3 kg/kWp | | Product warranty | 12 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 156 | 108 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, HiS-T635NJ:** 21,306 kWh - **Cumulative output, HiN-T435NF(BK):** 14,595 kWh - **Gap:** 6,711 kWh ## Output when hot | Condition | Cell temperature | HiS-T635NJ | HiN-T435NF(BK) | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 635 W | 435 W | 100.0% of rated power | | Cool, bright day | 40 °C | 607 W | 415 W | 95.5% of rated power | | Typical summer roof | 55 °C | 580 W | 396 W | 91.0% of rated power | | Hot roof | 70 °C | 552 W | 376 W | 86.5% of rated power | ## Against the whole database | Measure | HiS-T635NJ | HiN-T435NF(BK) | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,245 | #5,403 | 14,005 | HiS-T635NJ leads by 2,158 places | | Power density | #3,252 | #5,150 | 14,005 | HiS-T635NJ leads by 1,898 places | | Heat behaviour | #2,165 | #6,093 | 14,005 | HiS-T635NJ leads by 3,928 places | | Weight | #9,020 | #10,568 | 14,005 | HiS-T635NJ leads by 1,548 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,358 | #7,120 | 14,005 | HiS-T635NJ leads by 4,762 places | ## Questions ### Which panel is better: Hyundai HiS-T635NJ or Hyundai HiN-T435NF(BK)? According to our database: **Hyundai HiS-T635NJ** has higher module efficiency (**22.72%** vs **22.28%**); **Hyundai HiS-T635NJ** tolerates heat better (temp coeff **-0.290%/°C** vs **-0.300%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Hyundai HiS-T635NJ and Hyundai HiN-T435NF(BK)? **Hyundai HiS-T635NJ** has a module efficiency of **22.72%**, while **Hyundai HiN-T435NF(BK)** is **22.28%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Hyundai HiS-T635NJ use vs Hyundai HiN-T435NF(BK)? **Hyundai HiS-T635NJ** uses **TOPCon** cells; **Hyundai HiN-T435NF(BK)** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Hyundai HiS-T635NJ and Hyundai HiN-T435NF(BK)? **Hyundai HiS-T635NJ** has a **30 years** power warranty; **Hyundai HiN-T435NF(BK)** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are Hyundai HiS-T635NJ and Hyundai HiN-T435NF(BK) bifacial panels? Both **Hyundai HiS-T635NJ** and **Hyundai HiN-T435NF(BK)** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Hyundai HiS-T635NJ vs Hyundai HiS-T640NJ](https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t635nj/hd-hyundai-energy-solutions-his-t640nj) - The same specification on paper - [Hyundai HiS-T635NJ vs Hyundai HiS-T630NJ](https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t635nj/hd-hyundai-energy-solutions-his-t630nj) - The same specification on paper - [Hyundai HiN-T435NF(BK) vs Hyundai HiN-T440NF(BK)](https://comparepv.com/compare/hyundai-hin-t435nf-bk/hyundai-hin-t440nf-bk) - One difference: module efficiency - [Hyundai HiN-T435NF(BK) vs Hyundai HiN-T430NF(BK)](https://comparepv.com/compare/hyundai-hin-t435nf-bk/hyundai-hin-t430nf-bk) - One difference: module efficiency - [Hyundai HiS-T635NJ vs Hyundai HiT-H520LF-FB(ZB)](https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t635nj/hyundai-hit-h520lf-fb-zb) - 16 differences, the largest is temperature coefficient - [Hyundai HiS-T635NJ vs Hyundai HiT-H515LF-FB(ZB)](https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t635nj/hyundai-hit-h515lf-fb-zb) - 16 differences, the largest is temperature coefficient --- Source: https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t635nj/hyundai-hin-t435nf-bk Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.