3W High-Power LED Deep Red 650–670nm — 10-Pack

3W High-Power LED Deep Red 650–670nm — 10-Pack

3W high-power deep red LEDs at 650–670nm — pack of 10. The 660nm deep red wavelength is the primary absorption peak of chlorophyll-a — the most important wavelength for plant photosynthesis, flowering, and fruiting. Deep red LEDs at 650–670nm are the single most effective wavelength for plant grow lights, driving photosynthesis more efficiently than any other color. Essential for DIY grow light panels targeting maximum plant growth.

Key Specifications

• Power: 3W | Wavelength: 650–670nm (Deep Red)
• Luminous flux: 100–150lm @ 700mA
• Forward voltage (Vf): 2.0–2.4V | Forward current (If): 700mA
• Viewing angle: 120°
• Mounting: Star PCB (20mm) or direct solder
• Pack: 10 LEDs
• Compliance: RoHS compliant

⚠️ Important: Heat Management Required

3W LEDs generate significant heat. Always mount on a heatsink and use a constant-current LED driver (700mA). Do not drive from Arduino directly.

Why 660nm Deep Red for Plants?

• ✅ Chlorophyll-a peak absorption — 660nm is the most efficient wavelength for photosynthesis
• ✅ Flowering and fruiting — red light triggers phytochrome Pr→Pfr conversion for flowering
• ✅ Highest photosynthetic efficiency — more plant growth per watt than any other wavelength
• ✅ 10-pack value — enough for a full grow light panel

Recommended Grow Light Spectrum Mix

• Blue (440–470nm): 20–30% — vegetative growth
• Deep Red (650–670nm, this pack): 60–70% — primary photosynthesis
• Orange (600–605nm): 10–20% — supplemental PAR

Typical Applications

• DIY plant grow light panel (primary red spectrum)
• Indoor farming and vertical garden LED lighting
• Seedling and clone propagation lighting
• Flowering and fruiting stage grow light
• Scientific plant research illumination at 660nm

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

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