Discussion

Heatsinks?

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Hi, do I need to purchase heatsinks for the Banana PI?  My board didn't come with them.
it seems no heatsinks

You probably don't need one, but the device will benefit from having them.
I put one on the SoC, RAM, power management and networking IC's, used Arctic Alumina Thermal Adhesive to bond them to the device.
The system does run a little faster and is more consistent.

I personally recommend using at least one on the SoC because its close enough to the SD card to heat it up and I bet the extra heat will reduce the cards life span even more.

Reply 3# Shaka_Flex

I bought one from the market last two days

Here are some images of my banana pi with heat sinks that I made out of an old heat sink.
I preplanned to buy the clear case and cutout the bottom so the heat sinks fit and it worked out nicely.



omcdr  
Post Last Edited by omcdr at 2014-7-28 00:57

Does Banana Pi contain over temperature protection eg. alert or system shutdown ?
What is the safe temperature for this board ?

the "Power Management Unit" AXP209 integrated over / under voltage (OVP / UVP), over temperature (OTP), overcurrent protection (OCP) circuit.
http://linux-sunxi.org/AXP209

I think the A20's temperature range is -20 Celsius to 70 Celsius, here is the datasheet.
https://dl.linux-sunxi.org/A20/A20%20Brief%202013-02-27.pdf

RAM temp rang 0 Celsius  to 95 Celsius
http://www.samsung.com/global/bu ... 4g1646b_rev10-1.pdf

Networking IC temp rang is about 0 Celsius to 70 Celsius, didn't find the datasheet on this one.

Hope that helps.

I have run mine for quite sometime and not used a heat sink.
I think if you plan to overclock you might need one.

Well, the post is quite old, but i have a question about heatsinks.
i'm planning to use a old notebook heatsink, but the plate is quite large, my doubt is, the top of SoC and RAM are conductive?
because i will use the same plate on top of them.

tkaiser  
Edited by tkaiser at Thu Dec 11, 2014 09:46
Frichenbruder replied at Thu Dec 11, 2014 06:13
my doubt is, the top of SoC and RAM are conductive


No. But stuff around. And they're on a slightly different level according to http://forum.lemaker.org/forum.p ... =7476&pid=37112

And the whole approach is more or less useless if you don't think about the AXP209 as well. While it makes some sense to provide SoC and PMU with a heatsink if you plan to use it permanently under high load, for normal use cases it's just enough to ensure appropriate airflow (and let convection jump in. If the BPi is operated vertically then it's the best passive cooling solution. In case you're interested in details and do not just want to apply a heatsink because it looks cool: I've done extensive tests and posted the results to the network/servers forum (since I thought about special use cases -- maybe wrong. Watching a simply movie might also overheat SoC/PMU due to missing GPU acceleration)

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