[hpsdr] Mounting Hermes

[Kjell Karlsen]

Hi Berndt.

I think the copper heatsink is perfect! I am going to order one pack today.

73, Kjell




På Thu, 16 Aug 2012 13:47:44 +0200, skrev Berndt Josef Wulf  
<wulf at ping.net.au>:

> G'day Kjell,
>
> Understood. I've an account with element14 and they stock the heat sink:
>
> 4306557 FISCHER ELEKTRONIK - ICK SMD E 15 SA $6.99
>
> However, thermal tape and adhesives are not cheap:
>
> 1211723 FISCHER ELEKTRONIK - WLK 5 - ADHESIVE, THERMAL CONDUCTIVE $46.77
> 1841554 ELECTROLUBE - TBS20S - ADHESIVE, THERMAL BONDING, 2 PART $19.73
>
> An alternative may be a copper forged 14mmx14mm BGA heatsink with a 3M
> 8815 adhesive tape
>
> http://www.ebay.com/itm/Enzotech-BCC9-BMR-C1L-Low-Profile-Copper-BGA-Heatsink-/330701170645?pt=US_Memory_Chipset_Cooling&hash=item4cff5367d5
>
> It is 9mm in height, 1mm taller than the Fischer heatsink, but I can't
> see any reasons why it couldn't be trimmed down if required. This is a
> pack of 8 heatsinks @ $14.95.
>
>
> Thanks,
>
> 73, Berndt
> VK5ABN
>
> On Thu, 2012-08-16 at 12:51 +0200, Kjell Karlsen wrote:
>> Hi Berndt.
>>
>> I am sorry but I can not find the PN. The one I use is made by 3M but
>> nothing is marked on the roll. When I do a Goggle search I find type  
>> 8805
>> pressure sensitive tape, this is probably the one I have. It is 5 mils
>> (0,125 mm)tick. Several suppliers comes up on the search list.
>>
>> 73, Kjell
>>
>>
>>
>> På Thu, 16 Aug 2012 10:39:38 +0200, skrev Berndt Josef Wulf
>> <wulf at ping.net.au>:
>>
>> > G'day Kjell,
>> >
>> > Can you tell us the a part number and supplier for the thermal  
>> adhesive
>> > you used?
>> >
>> > 73, Berndt
>> > VK5ABN
>> >
>> > On Thu, 2012-08-16 at 09:50 +0200, Kjell Karlsen wrote:
>> >> ***** High Performance Software Defined Radio Discussion List *****
>> >>
>> >> Hi Frank.
>> >>
>> >> When Hermes PCB was constructed, it was designed to be installed both
>> >> ways. For use with Apollo in the Hammond enclosure (1455Q1601)  
>> Apollo is
>> >> mounted on the bottom for cooling of the PA transistors and Hermes is
>> >> installed on top with the components facing up. The interface cables  
>> are
>> >> connected to the bottom of Hermes (TX out, RX in, Power in and SPI).
>> >>
>> >> For use with Abhi´s 15 W PA, Hermes is installed on top with the
>> >> components facing down. There are provisions for interface  
>> connectors on
>> >> the component side of Hermes for this use. Remember that the SPI
>> >> connector
>> >> on top is different from the SPI on bottom (imaged)!
>> >>
>> >> For better cooling of the ADC, I am using a small Heat Sink (Fisher  
>> PN:
>> >> ICK SMD E 15 SA or equivalent) fastened to the top of the ADC using  
>> dual
>> >> sided heat transfer tape or glue. This seems to be sufficient for
>> >> cooling
>> >> even with 7 receivers running. I hope Phil can confirm this?
>> >>
>> >> 73, Kjell
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> På Wed, 15 Aug 2012 23:56:47 +0200, skrev FRANCIS CARCIA
>> >> <carcia at sbcglobal.net>:
>> >>
>> >> > ***** High Performance Software Defined Radio Discussion List *****
>> >> >
>> >>
>> >>
>> >
>> >
>> >
>>
>>
>
>
>


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