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JA Solar 620W N-Type Bifacial TOPCon Solar Panel
The JA Solar JAM66D45-620/LB is a 620W bifacial N-Type TOPCon dual-glass module delivering 23.0% efficiency across 132 half-cut cells. Its transparent glass backsheet adds up to 80% rear-side gain while operating on systems up to 1500 VDC, backed by a 30-year performance warranty.
$250.00
($0.40/W)
Available to ship Over 500 ready to ship
Ships in 1–3 business days.
Delivers in 2–5 business days
Available for pickup 5 locations
Pickup across our network
Ready for pickup as early as Wed, Oct 21
— we’ll tell you about drops and promotions.
Volume pricing
620 W
1 – 9
$250.00
$0.40 / W
10 – 19
$237.50
$0.38 / W
20 – 30
$230.00
$0.37 / W
31
$220.00
$0.35 / W
62+
$212.50
$0.34 / W
Applied automatically at checkout.
Contact us for larger orders
The JA Solar JAM66D45-620/LB is a 620W bifacial solar panel built on N-Type TOPCon cell technology, delivering 23.0% module efficiency for utility, commercial, and large residential arrays. This dual-glass module uses 132 half-cut cells with a transparent glass backsheet and silver 35mm frame, offering up to 80% bifaciality, a 0~+3% power tolerance, and durable performance across Canadian climates from -40°F to 185°F.
Key Features:
- 620W output, 23.0% module efficiency
- N-Type TOPCon bifacial cells
- Dual-glass 2.0mm / 2.0mm, transparent backsheet
- Bifaciality 80% ± 10%
- Temp coefficient Pmax -0.290%/°C
- Voc 48.50V / Vmp 40.21V, Isc 16.13A / Imp 15.42A
- 132 half-cut cells, 79.0 x 44.7 x 1.4 in, 33.9 lbs
- 1500 VDC system voltage, 35A fuse rating
- Wind 5400 Pa / Snow 2400 Pa, IP68, MC4-EVO2
- 12-year product, 30-year performance warranty
Ideal for ground-mount, carport, and rooftop installations where rear-side gain boosts yield, this module suits utility and commercial projects. Certified to IEC 61215, IEC 61730, UL 61215, and UL 61730, it integrates with standard MC4-EVO2 connectors and 1500 VDC string inverter systems. Order the JAM66D45-620/LB (also listed as JAM66D45620/LB) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.
| Rated power (STC) | 620 W |
|---|---|
| Open-circuit voltage (Voc) | 48.50 V |
| Short-circuit current (Isc) | 16.13 A |
| Voltage at max power (Vmp) | 40.21 V |
| Current at max power (Imp) | 15.42 A |
| Module efficiency | 23.0 % |
| Cell technology | Mono |
| Cell count | 132(6×22) |
| Max system voltage | 1500 V |
| Temp coefficient of Pmax | -0.290 %/°C |
| Dimensions (L×W×H) | 2382±2mm×1134±2mm×35±1mm (93.8 × 44.6 × 1.4 in) |
| Weight | 33.2 kg (73.2 lb) |
| Product warranty | 12 yr |
| Performance warranty | 30 yr |
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