{"product_id":"led-cob-28mm-7w-lumina-cald-rece","title":"LED COB 28mm - 7W, Warm\/Cool Light","description":"\u003cdiv class=\"cl-desc\"\u003e\n\n\n\u003cdiv class=\"cl-intro\"\u003e\n\n\u003ch2\u003e7W Dual-Color COB LED Chip for Lighting Projects\u003c\/h2\u003e\n\n\u003cp\u003eThe 28mm 7W COB LED chip integrates two color temperatures on the same substrate — cool white (6000-6500K) and warm white — allowing them to be used independently or in combination. The injected COB technology ensures a homogeneous luminous flux of up to 770 lm, suitable for both DIY projects and professional lighting applications. The aluminum alloy substrate with radial fins dissipates heat uniformly, extending the component's lifespan.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"cl-benefits\"\u003e\n\n\u003ch2\u003eWhat you get with this product\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eLighting flexibility — use cool white, warm white, or both simultaneously to achieve a neutral light without changing the component\u003c\/li\u003e\n\n\u003cli\u003eHigh luminous flux for its compact size — 700-770 lm from a 28mm chip, energy efficient at 100-110 lm\/W\u003c\/li\u003e\n\n\u003cli\u003eVersatile mounting — the four power contacts (2+ and 2-) allow for simple integration into existing circuits or new projects\u003c\/li\u003e\n\n\u003cli\u003eEfficient thermal dissipation — the aluminum substrate with radial fins reduces the risk of overheating when thermal paste is applied\u003c\/li\u003e\n\n\u003cli\u003eColor Rendering Index (Ra) over 80 — illuminated colors appear natural and clear, useful in commercial or display applications\u003c\/li\u003e\n\n\u003cli\u003eCompatible with a wide range of applications — recessed spotlights, floodlights, light boxes, automotive lighting, boats, camping\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"cl-how\"\u003e\n\n\u003ch2\u003eHow it works and how to install\u003c\/h2\u003e\n\n\u003cp\u003eThe 7W COB LED chip is powered by 21-22V DC with a current of 280-300mA via a compatible LED driver — it does not connect directly to the mains. Before mounting, apply a thin layer of thermal paste between the chip and the heatsink you are attaching to ensure proper heat transfer. Connect the positive and negative poles according to the markings on the substrate, observing the indicated polarity.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"cl-faq\"\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdiv class=\"cl-faq-item\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a separate driver for this LED chip?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYes, the chip requires an LED driver that supplies 21-22V DC at 280-300mA. It cannot be powered directly from 220V without a driver.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-faq-item\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use only one of the color temperatures, not both?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYes, the two circuits are independent. You only connect the pair of contacts corresponding to the desired temperature — cool white or warm white — or both for neutral light.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-faq-item\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs thermal paste mandatory for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt is mandatory. The 7W chip generates significant heat; without thermal paste and an adequate heatsink, its lifespan decreases dramatically and the risk of failure increases.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"cl-specs\"\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eModel\u003c\/td\u003e\n\n\u003ctd\u003eLED-H28-2B7C2\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eCOB LED Chip 2 in 1 (Cool White + Warm White)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePower\u003c\/td\u003e\n\n\u003ctd\u003e7W\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\n\u003ctd\u003e21 - 22V DC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\n\u003ctd\u003e280 - 300mA\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eColor temperature\u003c\/td\u003e\n\n\u003ctd\u003e6000 - 6500K (Cool White) \/ Warm White\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eLuminous flux\u003c\/td\u003e\n\n\u003ctd\u003e700 - 770 lm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eLuminous efficacy\u003c\/td\u003e\n\n\u003ctd\u003e100 - 110 lm\/W\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eColor Rendering Index (Ra)\u003c\/td\u003e\n\n\u003ctd\u003e\u0026gt; 80\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eChip size\u003c\/td\u003e\n\n\u003ctd\u003e28 mm (diameter)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eThickness\u003c\/td\u003e\n\n\u003ctd\u003e1.8 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\n\u003ctd\u003eAluminum alloy with radial fins\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePower contacts\u003c\/td\u003e\n\n\u003ctd\u003e4 (2+ and 2-)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\n\u003ctd\u003eup to 20,000 hours\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSKU\u003c\/td\u003e\n\n\u003ctd\u003eQ-20C057\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"cl-warranty\"\u003e\n\n\u003ch2\u003eWarranty and Support\u003c\/h2\u003e\n\n\u003cp\u003eThe product benefits from a 2-year legal warranty in accordance with current Romanian legislation. We accept returns within 30 days from the date of receipt, no justification required. Delivery is made by express courier throughout Romania.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\n\u003c\/div\u003e","brand":"OEM","offers":[{"title":"Default Title","offer_id":56801660109131,"sku":"Q-20C057","price":2.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1032\/2067\/4891\/files\/Led-Cob-28mm-_E2_80_93-7W-Lumina-Cald-Rece_3e8fe580-f6cb-498b-aaec-7f334b421c9d.jpg?v=1773834133","url":"https:\/\/classlights.eu\/hu-eu\/products\/led-cob-28mm-7w-lumina-cald-rece","provider":"ClassLights","version":"1.0","type":"link"}