--- title: "Hyundai HiT-H425MF-FB 425W Solar Panel - Specs & Review | ComparePV" description: "Hyundai HiT-H425MF-FB 425W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hyundai-hit-h425mf-fb" updated: 2026-09-11 --- # Hyundai HiT-H425MF-FB Middle of its segment, weak in heat 113 panels in the segment HJT 400-450 W ## Identity - **Manufacturer:** Hyundai - **Model:** HiT-H425MF-FB - **Series:** HeteroMax™ MF SERIES - **Rated power:** 425 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 400-450 W (113 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 425 W | 435 W | Typical | | | Module efficiency | 21.80% | 22.20% | Typical | 7,022 | | Power density | 217.6 | 221.6 | Typical | 7,172 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 23% | 511 | | Weight (kg) | 22.0 kg | 23.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 22.20% | Typical | 7,022 | | Power density | 217.6 | 221.6 | Typical | 7,172 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 23% | 511 | | Weight per kWp | 51.8 | 52.4 | Typical | 5,132 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.260 %/°C temperature coefficient** - Bottom 23% of the HJT 400-450 W segment, against a median of -0.240. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 34.33 V - **Current at Pmax (Imp):** 12.38 A - **Open-circuit voltage (Voc):** 41.10 V - **Short-circuit current (Isc):** 12.90 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 1.95 m2 - **Power density:** 217.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.0 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.38 % - **Output after 30 years:** 375 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 7172 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 5132 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Best-in-class temperature coefficient** - HJT cells deliver a Pmax temperature coefficient of -0.26%/°C, versus -0.31%/°C for TOPCon and -0.35%/°C for PERC. Under typical summer conditions (35°C ambient, NOCT 44°C), this translates to a real-world annual yield advantage of 3–5% over PERC modules of equivalent nameplate power. - **Highest efficiency among peer comparables** - Peak module efficiency of 22.79% leads the peer group: Q-Cells Q.TRON BLACK tops out at 22.3%, Solitek SOLRIF D Satin at 22.06%, and SunEvo SE6-46SC at only 21.4%. Higher power density directly reduces roof area requirements and BoS costs per installed kWp. - **Premium bifaciality factor (>90%)** - HJT's inherently symmetric heterojunction structure yields a bifaciality factor above 90%, compared to 70–80% for bifacial PERC and 80–85% for TOPCon bifacial. This delivers an additional 2–4% rear-side energy contribution when installed over reflective surfaces such as white TPO membranes, gravel, or concrete. - **30-year dual linear warranty** - HD Hyundai guarantees a maximum first-year degradation of 1%, followed by 0.375%/year, ensuring ≥88% of nameplate power at year 30 — covered by both a product warranty and a performance warranty. Competing series such as Q-Cells Q.TRON BLACK and Solitek SOLRIF D Satin carry standard 25-year power warranties; the 5-year gap is financially material across a residential LCOE horizon. - **Full LID and PID immunity** - N-type HJT cells are inherently free of Light-Induced Degradation (LID) and Potential-Induced Degradation (PID) — failure modes common in P-type PERC that can reduce output by 1–3% within the first weeks of operation. Combined with HD Hyundai Energy Solutions' BNEF Tier-1 bankable status (South Korea, est. 2004), this makes the series favorable for bank-financed commercial installations. ## Cons - **HJT technology price premium** - The low-temperature HJT manufacturing process keeps wholesale prices at approximately $0.38–0.50/Wp FOB (Q1 2026 data), compared to $0.28–0.35/Wp for equivalent TOPCon modules — a 15–40% gap. For a typical 10 kWp residential system, this premium may extend the simple payback period (SPP) by 1–2 years relative to alternatives such as Q-Cells Q.TRON BLACK, which offers comparable efficiency (22.3%) at a lower per-watt cost. ## About this series Hyundai HeteroMax MF SERIES panels are an advanced solution based on **innovative heterojunction (HJT) technology**, which effectively combines the advantages of crystalline and thin-film silicon. Thanks to the use of N-type cells and a **bifacial design**, this series enables energy generation from both sides of the module, which significantly increases total yields, especially when installed on bright surfaces. This solves the problem of limited installation space, offering power density that goes beyond market standards. A key advantage over the competition is an exceptionally low temperature coefficient, guaranteeing **stability of parameters in extreme heat**, and almost total resistance to degradation caused by PID and LID phenomena. The MF series was designed for demanding residential and business investors who seek the **highest durability and minimal power drops** over many years. **High performance in low sunlight** makes these panels a perfect fit for the specifics of the Polish climate, ensuring stable power production even on cloudy days. By choosing these modules, the user gains confidence in trouble-free operation and excellent mechanical resistance, which directly translates into the safety and profitability of the entire energy system for decades. ## Notable figures - Efficiency of 21.8% matches the \*\*HJT 400-450W\*\* median - At 217.6 W/m², this panel generates 4.0 W/m² less per unit area than \*\*HJT 400-450W\*\* median (221.6 W/m²) - At -0.26%/°C, loses 0.02pp more power per degree than \*\*HJT 400-450W\*\* median (-0.24%/°C) - At 22.0 kg, weight matches the \*\*HJT 400-450W\*\* median - Ranked #7022 out of 14005 panels for efficiency in the database ## Questions ### What is HJT technology in the Hyundai HeteroMax MF Series and how does it compare to PERC or TOPCon? HJT (heterojunction) combines N-type crystalline silicon with thin amorphous silicon layers, achieving up to approximately 23% efficiency and a temperature coefficient of only -0.26%/°C. This means the HeteroMax MF loses less power on hot days compared to PERC (approx. -0.35%/°C) or TOPCon (approx. -0.30%/°C) modules, delivering higher annual energy yield without requiring additional panels. ### What warranty does the Hyundai HeteroMax MF Series come with and what does it cover? The HeteroMax MF Series includes a 30-year product warranty covering manufacturing defects and a 30-year linear power output warranty. Manufactured by HD Hyundai Energy Solutions, a Tier 1 Korean manufacturer, these guarantees provide strong bankability for both residential and commercial projects. It is one of the most comprehensive warranty packages currently available on the PV market. ### How do Hyundai HeteroMax MF 445 Wp panels perform during overcast days typical of the Polish climate? HJT technology delivers excellent low-light performance, making the HeteroMax MF Series well-suited to climates with frequent cloud cover. Modules generate power even under diffuse irradiance, while the -0.26%/°C temperature coefficient ensures additional yield gains during hot summer days. The bifacial design further captures reflected irradiance from the ground surface, boosting total annual energy output. ### What are the practical benefits of the bifacial design in the Hyundai HeteroMax MF and when does it make the most sense? The bifacial construction allows the rear glass surface to capture albedo — sunlight reflected from the ground or mounting surface. On light-colored substrates such as white gravel, concrete, or snow, rear-side contribution can add 5–15% of additional power output. Ground-mounted systems and flat rooftops with sufficient module clearance above the surface benefit the most from this feature. ### What are the key electrical and mechanical specifications of the Hyundai HeteroMax MF 445 Wp module? The HiT-H445MF delivers 445 Wp at STC with efficiency approaching approximately 23%. It features 108 N-type HJT cells measuring 182 × 91.75 mm. Physical dimensions are 1,722 × 1,134 × 30 mm at 22 kg. The double-glass construction withstands snow loads up to 5,400 Pa and wind loads up to 2,400 Pa, making it suitable for demanding European weather conditions. ### Are the Hyundai HeteroMax MF Series panels resistant to PID and LID degradation? Yes. N-type HJT cells are inherently immune to LID (Light Induced Degradation), a degradation mechanism that affects conventional P-type cells during initial light exposure. The TCO (Transparent Conductive Oxide) film eliminates the risk of PID (Potential Induced Degradation). Together, these features ensure stable and predictable power output throughout the full 30-year operating lifetime. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HD-Hyundai-solar-module-d3880174bf25.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +50 W, +2.2 pp, +10 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +40 W, hotter, +2.0 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | +50 W, lighter, +2.0 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | +50 W, hotter, +2.0 pp | | [Astronergy CHSM48RN(DG)/F-BH-475](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm48rn-dg-f-bh-475) | 475 W | +50 W, hotter, +2.0 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | +50 W, lighter, +2.0 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | +50 W, +2.0 pp | | [Hyundai HIE-S390VG](https://comparepv.com/panel/hyundai-hie-s390vg) | 390 W | Hotter, -1.9 pp, -5 yr warranty | | [Hyundai HIE-S395VG](https://comparepv.com/panel/hyundai-hie-s395vg) | 395 W | Hotter, -1.6 pp, -5 yr warranty | | [Hyundai HIE-S400VG](https://comparepv.com/panel/hyundai-hie-s400vg) | 400 W | Hotter, -1.4 pp, -5 yr warranty | | [Hyundai HIE-S405VG](https://comparepv.com/panel/hyundai-hie-s405vg) | 405 W | Hotter, -1.1 pp, -5 yr warranty | | [Hyundai HIE-S410VG](https://comparepv.com/panel/hyundai-hie-s410vg) | 410 W | Hotter, -0.9 pp, -5 yr warranty | | [Hyundai HiT-H430MF-FB](https://comparepv.com/panel/hyundai-hit-h430mf-fb) | 430 W | +0.2 pp | | [Hyundai HiT-H435MF-FB](https://comparepv.com/panel/hyundai-hit-h435mf-fb) | 435 W | +10 W, +0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +85 W, cooler, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +70 W, lighter, +3.0 pp | --- Source: https://comparepv.com/panel/hyundai-hit-h425mf-fb 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.