What is the TSM-NEG9R.28?
- Rated output: 470 W at STC (model range 440–470 W), power tolerance 0 ~ +5 W
- Module efficiency: 23.5% at 470 W (model range 22.0–23.5%)
- Size and weight: 1762 × 1134 × 30 mm, 21.0 kg, black anodised aluminium frame
- Mechanical load: tested to 5400 Pa front and 4000 Pa rear
- Warranty: 15-year product (datasheet notes up to 25 years subject to conditions), 30-year power, 87.4% remaining
The TSM-NEG9R.28 is Trina Solar's residential module: 470 W at STC, 23.5% efficiency, N-type i-TOPCon Ultra cells in a 1.6 + 1.6 mm dual-glass laminate, black anodised frame, and a weight of just 21.0 kg. That last figure is the main reason panels in this family end up on villa and house roofs rather than the commercial modules. This page explains what the datasheet numbers mean once the panel is on an actual Phuket roof. Pearl Solar Energy's engineers and installers specify modules of this class for pool villas and homes across Phuket, Phang Nga and Krabi — see the scope under services and size a system with the calculator.
What is the TSM-NEG9R.28, and what makes it right for a villa roof?
This is a 144 half-cut-cell module built on N-type i-TOPCon Ultra cells in a 1.6 + 1.6 mm dual-glass laminate. That construction matters: where a typical residential panel uses a polymer backsheet, the glass rear face holds up better against humidity and UV over decades, and it does so while keeping the module to 21.0 kg. At 1762 × 1134 × 30 mm it drops onto the tile and metal-sheet mounting rails installers already stock, and the black anodised frame reads far more cleanly on a villa roof than a silver one — a genuine consideration when the property is photographed for booking platforms. The single most useful figure on this datasheet is the output at NOCT: 358 W, with 43.10 V and 8.31 A at maximum power. That is much closer to what the panel actually delivers on a hot roof than the 470 W laboratory rating. Electrically it runs high voltage and low current — 54.60 V open-circuit, 10.89 A short-circuit, 25 A maximum series fuse — which allows smaller DC conductors and lower cable losses than high-current commercial modules. If you are weighing whether to add storage, the trade-offs are set out under hybrid with battery backup, and the full hardware list sits under equipment.
Highlights from the datasheet
- 21.0 kg — safely handled on a roof: two installers can carry it up onto tile without a crane, and it does not consume an unreasonable share of a residential roof structure's load capacity.
- Tested to 5400 Pa front and 4000 Pa rear: this is the only module in the current line whose datasheet states mechanical load figures, which is exactly what a structural engineer needs when specifying clamp counts for a monsoon-exposed site.
- 358 W at NOCT (43.10 V, 8.31 A): a far more honest basis for yield estimates than the STC rating, because it reflects the cell temperature the module actually reaches in service.
- Dual-glass 1.6 + 1.6 mm construction: a glass rear face instead of a polymer backsheet, which resists humidity and UV better over the long term — a real distinction in a climate that is hot and humid all year.
- High voltage, low current — 54.60 V Voc, 10.89 A Isc, 25 A max series fuse: smaller DC cabling and lower resistive losses than high-current modules, which suits the shorter cable runs typical of residential installations.
- Black anodised frame with AR-coated front glass: a tidy appearance on a villa roof, paired with an IP68 junction box, TS4 Plus / TS4 connectors and 4.0 mm² cable.
- 30-year power warranty: 1% first-year degradation, then 0.4% per year, with 87.4% remaining in year 30. The product warranty is listed as 15 years with a note that up to 25 years is available subject to conditions — get that in writing from your supplier.
Key specifications (TSM-NEG9R.28)
| Specification | Datasheet value |
|---|---|
| Peak Power Watts (Pmax) | 470 W ที่ STC (ช่วงรุ่น 440–470 W) · ค่าความคลาดเคลื่อนกำลังไฟ 0 ~ +5 W |
| Module Efficiency | 23.5% (ที่ 470 W) · ช่วงรุ่น 22.0–23.5% |
| Cell Type | N-type i-TOPCon Ultra Monocrystalline โครงสร้างกระจกสองชั้น (Dual Glass) 1.6 + 1.6 mm |
| Number of Cells | 144 เซลล์ (half-cut) |
| Vmp / Imp at STC | 46.10 V / 10.20 A (ที่ 470 W) |
| Voc / Isc at STC | 54.60 V / 10.89 A (ที่ 470 W) |
| Pmax at NOCT | 358 W (Vmp 43.10 V / Imp 8.31 A / Voc 51.80 V / Isc 8.76 A) |
| Temperature Coefficient of Pmax | −0.29 %/°C |
| Temperature Coefficient of Voc / Isc | −0.24 %/°C / +0.04 %/°C |
| NOCT | 43°C (±2°C) |
| Module Dimensions | 1762 × 1134 × 30 mm (เฟรมอะลูมิเนียมอะโนไดซ์สีดำ 30 mm, กระจกหน้าเคลือบ AR 1.6 mm) |
| Weight | 21.0 kg |
| Mechanical Load (Front / Back) | ทดสอบรับแรงได้ถึง 5400 Pa ด้านหน้า และ 4000 Pa ด้านหลัง |
| Max System Voltage / Max Series Fuse / Operating Temp | 1500 V DC (IEC) / 25 A / −40°C ถึง +70°C |
| J-Box / Connector | กล่องต่อสาย IP68 · ขั้วต่อ TS4 Plus / TS4 · สาย 4.0 mm² |
| Product Warranty / Power Warranty / Degradation | ประกันสินค้า 15 ปี (datasheet ระบุว่าได้สูงสุด 25 ปีตามเงื่อนไข) / ประกันกำลังผลิต 30 ปี คงเหลือ 87.4% · เสื่อมปีแรก 1% ปีถัดไป 0.4% ต่อปี |
Note: every figure above comes straight from the Trina Solar Co., Ltd. (จดทะเบียนในตลาดหลักทรัพย์ STAR Market รหัสหุ้น 688599) datasheet. Actual system design (strings per MPPT, cable sizing, breakers) must be calculated for each site.
Why this model suits Phuket
- Roofs that stay hot all day: the −0.29 %/°C Pmax coefficient, the 43°C (±2°C) NOCT rating and the 358 W output at NOCT together describe what this panel really does here, far better than the 470 W STC figure.
- Monsoon wind and heavy rain: tested load figures of 5400 Pa front and 4000 Pa rear give your engineer real numbers for clamp placement and rail spacing, unlike the commercial modules in this line whose datasheets omit them entirely.
- Homes and villas near the sea: the datasheet records testing against salt mist, ammonia, sand and dust, and PID, and the glass rear face resists humidity better than a polymer backsheet over the long run.
- PEA grid connection: Phuket is served by the Provincial Electricity Authority. We prepare and file the application for you, confirming equipment listing status with the importer and PEA before each submission — see PEA permits.
Who it suits
- Houses with tile or metal-sheet roofs: at 1762 × 1134 mm and 21.0 kg, it fits standard rails and typical residential roof framing without structural reinforcement.
- Pool villas and rental villas: the black frame and AR-coated glass keep the roof looking deliberate in listing photography, which owners of rental properties genuinely care about.
- Restaurants and small commercial buildings: roof structures here are rarely as robust as a factory's, so a 21 kg module is a safer specification than a commercial-format panel.
- Projects where an engineer must sign off on load figures: this is the one module in the line with 5400 Pa / 4000 Pa printed on the datasheet, so the documentation can be submitted with the design rather than chased afterwards.
- Owners planning around a long horizon: a 30-year power warranty with 0.4% annual degradation after year one lets you project long-term output against numbers the manufacturer has committed to.
Summary
The TSM-NEG9R.28 is the module Trina built specifically for residential roofs, and the figures that justify that are the 21.0 kg weight, the 1762 × 1134 mm footprint, the 5400 Pa front load rating, and 358 W at NOCT — which tells you far more about hot-roof performance than the 470 W STC number. One thing to settle before you buy is the product warranty: the datasheet states 15 years with a note that up to 25 years applies subject to conditions, while the manufacturer's own product page shows different figures, so ask your supplier to confirm the terms in writing. Pearl Solar Energy's engineers and installers are ready to install it — see typical project budgets under solar cost in Phuket, then contact us and we will come and inspect the roof.
See other models from this brand on the Trina Solar (Trinasolar) overview, or browse all the equipment we install.
Download the datasheet (PDF) — full manufacturer specification sheet