[hpsdr] Mounting Hermes

[Berndt Josef Wulf]

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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