The package is called by different trade names by companies,  

Lumileds Corp calls them **"Barracuda"**,  
while   
Osram Opto. calls them **"Dragon"**.



![led-package-barracuda-lumileds][2]

<br>


The **important feature** of the package is a heat-conducting metal center, the **"heatsink slug"**, that can be soldered onto a larger heatsink below:
<br>

![enter image description here][1]

For details and source, see the chapter on LED packaging of the somewhat-retired LED-related website [Light-Emitting-Diodes-dot-org](http://www.ecse.rpi.edu/~schubert/Light-Emitting-Diodes-dot-org/) - (note different domain).

See the bottom-left image: [Chapter 11: Packaging - Fig 11.5.](http://www.ecse.rpi.edu/~schubert/Light-Emitting-Diodes-dot-org/chap11/chap11.htm)


A possible reason for not having a clear type code for this package could be that it was not actually a LED package, but just a more generic heatsink-with-extra-plastic-lens.

<hr>
*<sub>Barracuda was, at least initially, actually referring to the type of LED die itself, not the package. See [ledmuseum.candlepower.us](http://ledmuseum.candlepower.us/agilent.htm) and  [Philips LED Update - page 8](http://public.ises.org/PREA/2_Presentations/3_Tech_Strat_Edu/9_Philips_LED.pdf)  </sub>


  [1]: https://i.sstatic.net/WCK73.jpg
  [2]: https://i.sstatic.net/OPEuP.png