Osram's Oslon LEDs feature a unified pad design for greater flexibility and second chance

Second Source refers to the supply strategy of a certain product or a product line of a specific project by different suppliers. With this strategy, all products should be able to be integrated into current production without additional costs. This approach provides a higher level of supply security and is the standard source of supply for LED components. However, since components produced by different manufacturers typically have different pad sizes and shapes, it is often necessary to use two boards to solder the LEDs of the two manufacturers, thereby increasing the cost of board storage and process modification.

Just adjust the board layout

Considering that the entire Oslon product family is a ceramic LED component, OSRAM Opto Semiconductors in Regensburg, Germany, proposes a new concept: a universal board pad design that is compatible with LEDs produced by at least two different manufacturers. element. The same concept applies to metal cores, FR4 and ceramic plates.

Dr. Christian Gärtner, Oslon project manager for General Lighting Product Development at OSRAM Opto Semiconductors in Germany, explained: “With a small adjustment to the process, you can bring real and long-term benefits.” This composite circuit board design source One of two LED component designs. A welding surface is divided into multiple parts - electrical connection and power failure. The second LED product (rotated 90°) can be integrated into a unified board design by properly selecting the spacing of the soldered faces. The anode and cathode of the two LED elements are connected to the same electrical contact portion. By splitting the weld face, the two types of LEDs automatically align with the edges of the weld face during reflow soldering. For these two LED components, the light-emitting areas are on the same side of the board, ie on the same alignment line on the board plane. If the two LEDs have the same emission performance, the same secondary lens and reflector can be used. This means that the characteristics of the LED components and the final application will not change.

Maximize the benefits

With this new concept, LED components from different manufacturers can be handled without having to modify the board design. In addition, the cost is further reduced since the storage board is no longer needed. Dr. Christian Gärtner sums up the benefits he brings: “The efficiency and performance of the Oslon product family are unmatched worldwide, and the concept of flexible pad design frees our customers from machinery. The parameter limits allow for the free integration of the second source of Osram's high-power LED components."

The improved pad design enables two different types of LEDs to be soldered to the same board.