X-ONU-SFPP Cooler

A cooler for X-ONU -SFPP. Could fit in a 3007 blower fan and several (up to four) 3d printer stepper driver heat sink (as shown in the photo).

The 3007 fan I use was harvested from a spare raspberry pi cooler (5V with a speed reduction cable) but any other 3007 blower fan should work. Feel free to modify it so it fits your own fan selection. The fan should be able to slide in without much resistance and hold in position by friction.

The PON stick slide-on part needs to be relatively accurate in dimension, especially the hole size. That is the major reason of printing it upright instead of lying flat.

The extra heatsinks is not mandatory, but it will help a bit on the thermal performance. With 3.5 heat sinks installed, the temp should be less than ambient+30C (55F) without audible noise.  (Yes, 3.5 because I have to cut half of the heatsink off just to make sure it will not block the other sfp+ port.) If you can ramp the fan speed up, the performance could be even better but you will get more fan noise.

That's it as of now. Please feel free to use it and share your opinion on what can be improved!