850nm led

When evaluating 850nm LEDs (Infrared), you must prioritize Radiant Intensity (mW/sr) and Total Radiant Flux (mW) rather than lumens, as IR light is invisible to the human eye. Key factors include the Peak Wavelength tolerance (typically ±10nm), Forward Voltage (Vf), and Viewing Angle (narrow angles like 15°-30° for long-range surveillance vs. wide angles for flood lighting). Ensure the Chip Size (e.g., 14mil, 28mil, or 42mil) matches your power requirements to prevent overheating.

850nm LEDs are primarily used in CCTV Night Vision, Biometric Recognition (Iris/Face ID), and Optical Sensors. For security cameras, choose LEDs with high reliability and long lifespans (50,000+ hours). For medical or biometric applications, spectral purity and low noise are critical. Note that 850nm LEDs produce a faint red glow visible to the human eye, which is preferred for active deterrence in security compared to the completely invisible 940nm LEDs.

Compliance is vital for international trade. Ensure the products meet IEC 62471 (Photobiological Safety of Lamps) to certify that the infrared radiation does not harm human eyes or skin. Additionally, products must be RoHS and REACH compliant to ensure they are free from hazardous substances like lead or cadmium. For automotive applications, look for AEC-Q102 certification.

High-power 850nm LEDs generate significant heat. Request Thermal Resistance (Rthjs) data and ensure the supplier uses Ceramic Substrates (ALN or Al2O3) for better heat dissipation compared to standard FR4 PCBs. Ask for LM-80 test reports, which provide data on lumen (or radiance) maintenance over time, ensuring the product won't dim prematurely in the field.

Always request Golden Samples for laboratory testing before placing a bulk order. Use third-party inspection services to perform a Pre-Shipment Inspection (PSI) focusing on wavelength accuracy and radiant power. To ensure transaction security, utilize Secured Payment services on Made-in-China.com, which protect your funds until the goods are verified against your requirements.

Negotiate based on Binning Consistency. Request that the supplier provides LEDs from the same brightness and wavelength bin to ensure uniformity in your final product. For high-volume orders, aim for a 15-25% price reduction by discussing long-term forecasting and annual volume commitments rather than one-off spot buys.

LEDs are moisture-sensitive devices (MSD). Ensure the supplier uses Vacuum-Sealed Anti-Static Bags (MBB) with Desiccant and Humidity Indicator Cards (HIC). The outer packaging should be double-walled corrugated boxes with sufficient cushioning to prevent mechanical stress during cross-border transit. Specify Air Freight for high-value components to minimize exposure to port humidity and long-term vibration.

Check the HS Code (typically 854141) for specific import duties in your country. Be aware of Anti-Dumping Duties or specific trade barriers that may apply to optoelectronic components. Ensure the supplier provides a clear Certificate of Origin (CO) to benefit from any applicable Free Trade Agreements (FTAs) that could reduce your tariff burden.