COB LED Light Panel Module – 3.2V 6500K - Single
R15.00
Price incl. VAT (15%) R1.96
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COB LED Light Panel Module – 3.2V 6500K - Single
Product Details
COB LED Light Panel Module – Technical Specifications:
| LED Type | – COB (Chip-on-Board) Integrated LED Array |
| Light Colour | – Cool White (approx. 6000K–6500K) |
| Forward Voltage | – 3.2V DC |
| Operating Current | – 60–100mA (Typical) |
| Power Consumption | – ~0.3W |
| Luminous Flux | – ~30–50lm (Typical) |
| Viewing Angle | – ~120° |
| CRI (Colour Rendering) | – ≥ 70 Ra |
| PCB Type | – Aluminium Base PCB (Heat Dissipating) |
| Terminals | – 2-Pin Solder Pads (Positive / Negative) |
| Surface Finish | – White Phosphor Coating over COB Array |
| Operating Temperature | – -20°C to +60°C |
| Lifespan | – ≥ 30,000 Hours |
| Applications | – Desk Lamps, Reading Lights, Craft Lighting, Night Lights, DIY Appliances, Arduino / ESP32 Projects |
Handy Tips for Using the COB LED Light Panel Module:
1: COB (Chip-on-Board) technology bonds multiple LED chips directly onto a single substrate under a unified phosphor layer, producing a large, smooth, uniform light-emitting surface with no visible individual LED hotspots. This gives a much more pleasant, diffused illumination than discrete LEDs — ideal for desk lamps, reading lights, and any task or ambient lighting application where even, consistent light is important.
2: This module operates at a low voltage of 3.2V DC — compatible with single-cell LiPo batteries (3.7V with a small series resistor), 3× AA battery packs (4.5V with a resistor), USB 5V supplies (with a resistor or small buck module), and 3.3V regulated microcontroller outputs via a transistor or MOSFET switch. Always calculate and include a current-limiting resistor when powering from any voltage above 3.2V.
3: To calculate the correct current-limiting resistor, use: R = (Supply Voltage − 3.2V) ÷ Operating Current. For example, powering from 5V USB at 80mA: R = (5 − 3.2) ÷ 0.08 = 22.5Ω — use the nearest standard value of 22Ω or 27Ω. For a 3.7V LiPo: R = (3.7 − 3.2) ÷ 0.08 = 6.25Ω — use 6.8Ω or 10Ω from your resistor kit.
4: The aluminium base PCB acts as a passive heatsink, drawing heat away from the COB array to extend its lifespan. For best results in enclosed fixtures, ensure adequate airflow around the rear of the board. For continuous-use or higher brightness applications, bond a small aluminium heatsink to the rear of the PCB using thermal adhesive tape or thermal paste to further improve heat dissipation and extend the LED's rated 30,000-hour lifespan.
5: When soldering wires to the solder pads, observe correct polarity — the positive pad connects to your supply voltage through the current-limiting resistor, and the negative pad connects to GND. Use a fine-tipped iron, apply flux, and keep the contact brief. Excessive heat can damage the phosphor coating over the COB array or delaminate the aluminium PCB. Allow the joint to cool fully before powering the module for the first time.
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