--- title: "Trina Solar TSM-DE17M(II)-445W Solar Panel: Specs & Datasheet | ComparePV" description: "Trina Solar TSM-DE17M(II)-445W solar panel. Specs: 20.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/trina-solar-tsm-de17m-ii-445w" image: "https://comparepv.com/og/panel/trina-solar-tsm-de17m-ii-445w.png" updated: 2026-09-11 --- # Trina Solar TSM-DE17M(II)-445W Strong in heat, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Trina Solar - **Model:** TSM-DE17M(II)-445W - **Series:** Tallmax Framed 144 Layout Module (TSM-DE17M(II)) - **Rated power:** 445 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 445 W | 410 W | Strong - top 5% | | | Module efficiency | 20.40% | 20.60% | Typical | 11,680 | | Power density | 203.6 | 206.2 | Typical | 11,764 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,846 | | Weight (kg) | 24.0 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.40% | 20.60% | Typical | 11,680 | | Power density | 203.6 | 206.2 | Typical | 11,764 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,846 | | Weight per kWp | 53.9 | 53.0 | Typical | 8,164 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Strengths - **-0.340 %/°C temperature coefficient** - Top 24% of the PERC 400-450 W segment, against a median of -0.350. - **Best for:** Commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 445 W - **Efficiency:** 20.40 % - **Voltage at Pmax (Vmp):** 40.80 V - **Current at Pmax (Imp):** 10.90 A - **Open-circuit voltage (Voc):** 49.40 V - **Short-circuit current (Isc):** 11.46 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2102 mm - **Width:** 1040 mm - **Thickness:** 35 mm - **Weight:** 24.0 kg - **Area:** 2.19 m2 - **Power density:** 203.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 365 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11680 of 14129 | | Power density | 11764 of 14129 | | Temperature coefficient | 8846 of 14129 | | Weight | 8164 of 14129 | | Warranty | 9912 of 14129 | ## About this series Trina Solar Tallmax Framed 144 Layout Module (TSM-DE17M(II)) is designed to maximize energy yield and deliver real energy savings in installations. The key here is the 144 half-cut architecture - lower resistive losses translate to more stable performance in hot conditions and better tolerance to partial shading, which is crucial on rooftops with chimneys, window wells, or ground-mounted systems with uneven sun exposure. The application of **MBB (multi busbar) technology** improves current collection from the cells and minimizes microheating, supporting long-term reliability. The series also emphasizes **high PID resistance** and **mechanical durability**, making it suitable for demanding conditions involving wind and snow loads. Lower **BOS costs** are also important for investors - higher power per module allows reducing the number of panels, structures, and cabling. This is a good choice for commercial installations, PV farms, and large industrial rooftops, where LCOE and predictable long-term production matter. ## Notable figures - At 20.4% efficiency, this panel is on par with typical \*\*PERC 400-450W\*\* modules - Power density of 203.6 W/m² matches the \*\*PERC 400-450W\*\* median - Temperature coefficient of -0.34%/°C matches the \*\*PERC 400-450W\*\* median - Weight of 24.0 kg is 2.0 kg above \*\*PERC 400-450W\*\* median (22.0 kg) - verify structural support - In the top 83% for efficiency among all PERC panels ## Questions ### Is the Trina Solar Tallmax Framed 144 (TSM-DE17M(II)) series still available for purchase? No, the Tallmax Framed 144 Layout Module (TSM-DE17M(II)) series has been discontinued by Trina Solar. Panels may still be found through distributors selling remaining stock, but new factory orders are no longer being fulfilled. It's worth checking current inventory with your supplier or considering newer Trina series such as Vertex or Vertex S+. ### What is the maximum power output of the Tallmax Framed 144 TSM-DE17M(II) series? Modules in this series reach a maximum power output of up to 460 Wp. Thanks to the 144 half-cut cell architecture and MBB technology, the module maintains high efficiency in a relatively compact footprint, reducing the number of panels needed to reach a given system capacity. ### What warranty comes with Trina Tallmax Framed 144 (TSM-DE17M(II)) panels? The manufacturer provides a 12-year product warranty and a 25-year power output warranty. This means protection against material and manufacturing defects for 12 years, plus a guarantee of maintaining a defined energy production level for a quarter of a century, a standard offering from a tier 1 manufacturer. ### How does PERC cell technology in these panels differ from standard cells? PERC cells feature an additional passivation layer on the rear side that reflects unused light back into the cell, increasing its absorption. In practice this means higher solar-to-electricity conversion efficiency compared to standard cells, and combined with the half-cut architecture and MBB technology, it results in more stable module performance, especially in hot weather. ### Are Tallmax Framed 144 panels suitable for large industrial roofs and PV farms? Yes, the series was designed for commercial installations, PV farms, and large industrial rooftops. The high power output per module allows for fewer panels, less mounting structure, and shorter cabling runs, lowering BoS costs and improving project economics measured by LCOE. ### Are TSM-DE17M(II) modules resistant to PID and harsh weather conditions? Yes, the series offers high resistance to potential-induced degradation (PID) along with strong mechanical durability, contributing to good resistance against wind and snow loads. MBB technology also reduces cell micro-cracking heat effects, supporting long-term reliability. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/MA-Datasheet-TallmaxM-DE17M-II-202011-cd1a36cd70df.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +50 W, cooler, +4.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, +4.1 pp, +5 yr warranty | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | Cooler, +4.1 pp, +5 yr warranty | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | Cooler, +3.9 pp, +5 yr warranty | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | Cooler, +3.9 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-495M](https://comparepv.com/panel/longi-lr7-54hjd-495m) | 495 W | +50 W, cooler, +3.9 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | Cooler, +3.9 pp, +5 yr warranty | | [Trina Solar TSM-DE17M(II)-435W](https://comparepv.com/panel/trina-solar-tsm-de17m-ii-435w) | 435 W | -10 W, -0.5 pp | | [Trina Solar TSM-DE17M(II)-440W](https://comparepv.com/panel/trina-solar-tsm-de17m-ii-440w) | 440 W | -0.3 pp | | [Trina Solar TSM-DE17M(II)-450W](https://comparepv.com/panel/trina-solar-tsm-de17m-ii-450w) | 450 W | +0.2 pp | | [Trina Solar TSM-DE17M(II)-455W](https://comparepv.com/panel/trina-solar-tsm-de17m-ii-455w) | 455 W | +10 W, +0.4 pp | | [Trina Solar TSM-DE17M(II)-460W](https://comparepv.com/panel/trina-solar-tsm-de17m-ii-460w) | 460 W | +15 W, +0.6 pp | | [Trina Solar TSM-DE17M(II)-465W](https://comparepv.com/panel/trina-solar-tsm-de17m-ii-465w) | 465 W | +20 W, +0.9 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +145 W, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +140 W, +3.2 pp, +5 yr warranty | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +135 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/trina-solar-tsm-de17m-ii-445w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.