Cob led strip

COB (Chip on Board) LED strips provide dot-free linear lighting, which eliminates the 'spotted' effect seen in traditional SMD strips. They feature a higher density of LED chips (often 320, 480, or 512 LEDs/m) packed under a continuous phosphor coating. This design ensures superior heat dissipation, a wider beam angle of 180°, and better color consistency, making them ideal for high-end architectural and cabinet lighting.

Focus on the Color Rendering Index (CRI); for professional projects, ensure a CRI >90 to represent colors accurately. Check the luminous efficacy (lm/W) to ensure energy efficiency. Additionally, verify the PCB thickness, preferably 2oz or 3oz copper, to prevent voltage drop over long distances and ensure the strip doesn't overheat during prolonged use.

For the US market, UL or ETL listing is critical for fire safety and insurance compliance. For the EU, look for CE, RoHS, and ERP certifications. If the strips are intended for bathrooms or outdoor use, verify the IP Rating (e.g., IP65 for splash resistance or IP67/68 for waterproof requirements) and ensure the silicone extrusion is UV-resistant to prevent yellowing.

They are widely used in indirect cove lighting, kitchen under-cabinet lighting, and commercial display cases. For integration, confirm dimming compatibility (Triac, 0-10V, or PWM) and ensure the input voltage (12V or 24V) matches your power supply. For smart home projects, check if the supplier provides Zigbee or Wi-Fi controllers that integrate with existing building management systems.

Always request a pre-production sample and a Golden Sample for reference. Utilize third-party inspection services (like those offered through Made-in-China.com) to conduct a 'During Production Check' (DUPRO) and a 'Final Random Inspection' (FRI). Specifically, ask the inspector to test for color temperature (CCT) consistency across different batches to avoid 'rainbow' effects in a single installation.

Focus on the total cost of ownership rather than just the unit price. Negotiate for longer warranty periods (3-5 years) and clarify the RMA (Return Merchandise Authorization) policy. Ask for tiered pricing based on annual volume rather than a single PO, and ensure the supplier uses branded LED chips (like San'an or Epistar) in the contract specifications.

COB strips are sensitive to pressure and moisture. Ensure the supplier uses anti-static vacuum packaging and reinforced outer cartons. For shipping to the US or Europe, compare FOB vs. DDP terms; DDP is often more convenient for mid-sized buyers as it includes all customs duties and 'last-mile' delivery, reducing the risk of unexpected port fees.

Use the Secured Trading Service on Made-in-China.com to protect your payment. Do not release the final balance until the Bill of Lading (B/L) is provided and the third-party inspection report is approved. Verify the supplier's Business License and Export Qualification to ensure they are a legitimate manufacturer and not a middleman with no quality control.