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Heat sinks

Doc Dowd, W1DOC
 

Maybe "up your heat sink" game:
Use a copper, rather than an aluminum heat sink. It transfers heat more efficiently.
Fins are only effective if you are using a cooling fan to move the air around.
Use thermal paste instead of a stick on pad.
Tadd KA2DEW in NC
 

have you seen the FLIRC case? 

It makes a marvelous heat sync, is quiet and looks good. 
The downsides of it is access to internal connectors requires opening the case, and the WiFi / Bluetooth performance suffers.  



Tadd / KA2DEW  http://qrz.com/db/ka2dew
tadd@...
Raleigh NC  FM05pv

North Carolina ham-radio chatRoom Network: http://ncpacket.net/north_carolina_packet_radio_network.html
Packet networking over ham radio: http://tarpn.net/t/packet_radio_networking.html
Local Raleigh ham radio info: http://torborg.com/a
Ham Shack Hotline # 11173

On Nov 17, 2021, at 9:55 AM, Doc Dowd, W1DOC <bdowd48@...> wrote:

Maybe "up your heat sink" game:
Use a copper, rather than an aluminum heat sink. It transfers heat more efficiently.
Fins are only effective if you are using a cooling fan to move the air around.
Use thermal paste instead of a stick on pad.

Ken Curtis
 

The issue/problem is with a RPi zero 2 W overheating, whereas this case specifies that it is for a RPi 4. Totally different case requirements. However, this case DOES SHOW it is for a zero 2 W, and it shows a heat sink:

https://coolcomponents.co.uk/collections/cases-enclosures/products/raspberry-pi-zero-2-w-case

Maybe it will work?

Ken KC3ROF

On 11/17/2021 10:10 AM, Tadd KA2DEW in NC via groups.io wrote:

have you seen the FLIRC case? 

It makes a marvelous heat sync, is quiet and looks good. 
The downsides of it is access to internal connectors requires opening the case, and the WiFi / Bluetooth performance suffers.  



Tadd / KA2DEW  http://qrz.com/db/ka2dew
tadd@...
Raleigh NC  FM05pv

North Carolina ham-radio chatRoom Network: http://ncpacket.net/north_carolina_packet_radio_network.html
Packet networking over ham radio: http://tarpn.net/t/packet_radio_networking.html
Local Raleigh ham radio info: http://torborg.com/a
Ham Shack Hotline # 11173

On Nov 17, 2021, at 9:55 AM, Doc Dowd, W1DOC <bdowd48@...> wrote:

Maybe "up your heat sink" game:
Use a copper, rather than an aluminum heat sink. It transfers heat more efficiently.
Fins are only effective if you are using a cooling fan to move the air around.
Use thermal paste instead of a stick on pad.

Jim Higgins
 

It comes with two interchangeable tops. One has a higher clearance to clear a heat sink, but it doesn't include the heat sink.

73 de Jim, KB3PU


Received from Ken Curtis via groups.io at 11/17/2021 17:01 UTC:

The issue/problem is with a RPi zero 2 W overheating, whereas this case specifies that it is for a RPi 4. Totally different case requirements. However, this case DOES SHOW it is for a zero 2 W, and it shows a heat sink:

<https://coolcomponents.co.uk/collections/cases-enclosures/products/raspberry-pi-zero-2-w-case>https://coolcomponents.co.uk/collections/cases-enclosures/products/raspberry-pi-zero-2-w-case

Maybe it will work?

Ken KC3ROF
Box1600
 

I am using this with my Raspberry Pi Zero 2 W and it works well.

Has a built in heatsink.

I too used some thermal grease.
Amazon.com Return Policy: You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the ...
www.amazon.com

73 - Bill KA8VIT/W8COD


From: RaspberryPi-4-HamRadio@groups.io <RaspberryPi-4-HamRadio@groups.io> on behalf of Ken Curtis via groups.io <kcurtis51@...>
Sent: Wednesday, November 17, 2021 12:01 PM
To: RaspberryPi-4-HamRadio@groups.io <RaspberryPi-4-HamRadio@groups.io>
Subject: Re: [RaspberryPi-4-HamRadio] Heat sinks
 

The issue/problem is with a RPi zero 2 W overheating, whereas this case specifies that it is for a RPi 4. Totally different case requirements. However, this case DOES SHOW it is for a zero 2 W, and it shows a heat sink:

https://coolcomponents.co.uk/collections/cases-enclosures/products/raspberry-pi-zero-2-w-case

Maybe it will work?

Ken KC3ROF

On 11/17/2021 10:10 AM, Tadd KA2DEW in NC via groups.io wrote:

have you seen the FLIRC case? 

It makes a marvelous heat sync, is quiet and looks good. 
The downsides of it is access to internal connectors requires opening the case, and the WiFi / Bluetooth performance suffers.  



Tadd / KA2DEW  http://qrz.com/db/ka2dew
tadd@...
Raleigh NC  FM05pv

North Carolina ham-radio chatRoom Network: http://ncpacket.net/north_carolina_packet_radio_network.html
Packet networking over ham radio: http://tarpn.net/t/packet_radio_networking.html
Local Raleigh ham radio info: http://torborg.com/a
Ham Shack Hotline # 11173

On Nov 17, 2021, at 9:55 AM, Doc Dowd, W1DOC <bdowd48@...> wrote:

Maybe "up your heat sink" game:
Use a copper, rather than an aluminum heat sink. It transfers heat more efficiently.
Fins are only effective if you are using a cooling fan to move the air around.
Use thermal paste instead of a stick on pad.

Jim Higgins
 

Received from Doc Dowd, W1DOC at 11/17/2021 14:55 UTC:

Maybe "up your heat sink" game:
Use a copper, rather than an aluminum heat sink. It transfers heat more efficiently.
Fins are only effective if you are using a cooling fan to move the air around.
Use thermal paste instead of a stick on pad.

Copper has about 40% better heat conduction, but the heat sink to air conduction is about the same so with the small size and large surface copper vs aluminum won't make much difference. Also, it can be really hard to find copper heat sinks.

73 de Jim, KB3PU
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