Issue link: https://te.mouser.com/i/1410845
To provide a more controlled normal force on the thinner ceramic devices, a thermal spring is incorporated and is seen in figure 15. A pair of these springs can exert just the right amount of force on a ceramic device to ensure optimal heat transfer when used with most commercially available thermal greases. While a two piece socket design affords a significant level of scalability to accommodate a wide range of COBs, some fixture manufacturers prefer to only handle a single part. Additional levels of scalability can be incorporated into a two piece design by the relatively simple addition of two arms at 90 degrees to each other. These arms then facilitate a scalable, factory assembled one-piece housing [Fig 16]. As designed, the arms are molded so that when joined in a factory setting, the corners would overlap. A customized holder is then available to fit a specific manufacturer's COB LED [Fig 17]. Fig. 17 Fig. 16 Fig. 15 By doing this, a more generic two piece design or a customized one piece design can be used by the fixture manufacturer with very little cost difference between the two. By offering this stepping-stone approach, a customer minimizes their interconnect investment during prototyping by launching their lighting fixture using a readily available two piece holder solution. Once production ramp starts, the switch can be made to a more manufacturing-friendly one piece design. Ideally, a having a single holder to accommodate all COBs would be the perfect solution however, we all know how difficult and rare perfect solutions are. Given the slight differences in pad locations between commercially available COB products and different plating styles commonly used, a perfect solution is still elusive. Nonetheless, with a scalable holder Copyright 2018 TE Connectivity Ltd. Family of Companies TE Connectivity, TE connectivity (logo) and TE (logo) are trademarks. Other logos, product and/or company names might be trademarks of their respective owners.