Soldering LEDs at not less than 3 mm from the base of the package and below the tie‐bar is recommended. • The LED soldering specification is shown below (suitable for both leaded solder & lead‐free solder). Not less than 3 mm from the base of the package. Manual soldering onto the PCB is not recommended because soldering time is uncontrollable.
Cree LED has seen positive results using solder thickness that results in a 4-mil (102-μm) bond line, i.e., the solder joint thickness after reflow soldering. Cree LED strongly recommends using “no clean” solder paste with XLamp XFL LEDs so that cleaning the PCB after reflow soldering is not required. After Soldering
To insure effective thermal management for CX family LEDs, Cree LED recommends the CX family LED be attached to an appropriately sized heat sink, depending on drive current and intended operating environment.
* Cree LED recommends the use of lead-free, zero-halogen solder pastes with <200 μm coalescence performance. Examples include ALPHA ® LUMET P30 Maxrel , Alpha Lumet P39 MaxRel, and Alpha OM-362.
These LEDs have high reliability performance and are designed to work under a wide range of environmental conditions. This high reliability feature makes them ideally suited to be used under illumination application conditions.
The reliability of the solder joint between the LED package and printed circuit board (PCB) is critical in ensuring the overall reliability of an LED lighting fixture. This application note describes best practices for creating reliable solder joints, the methods by which Cree LED tests solder-joint reliability, and methods for
Home - Cree LED: Application-Optimized LED Solutions
Cree LED pioneered the lighting-class LED, producing billions of the industry’s best LEDs for nearly every illumination application. Our application-optimized products and expert design assistance ensure the best possible performance for your design.
These high performance tricolor SMT LEDs are designed to work in a wide range of applications. A wide viewing angle and high brightness make these LEDs suitable for outdoor and full color video signage applications.
XLamp® XHP LEDs - Cree LED
2024年3月29日 · Cree LED continues to expand its XLamp® XHP White LED family with new 3V options available for all 6 XHP products. XHP LEDs deliver industry-leading lumen density, light quality and optical control for portable lighting applications. All 3V versions are available with 5000K-7000K CCT options optimized for maximum performance.
When the LED junction temperature (Tj) increases, the performance of the LED decreases, resulting in lower light output from the LED. The LED junction temperature cannot be measured directly, however it can be calculated from the solder-point temperature (Tsp).