[hpsdr] Mounting Hermes

[Ian Guffick]

Hi Berndt,

Element14 / Farnell have some small adhesive pads that are quite cheap.
e.g. order code 1211706, "FISCHER ELEKTRONIK - WLFT 404 14X14 -
THERMALLY CONDUCTIVE
FOIL, ADHESIVE" @ £0.44 each.

I wonder which other ICs get hot?
Gigabit PHYs usually run quite hot, not sure about the one used on Hermes?

BR, Ian.


On 16 August 2012 12:47, Berndt Josef Wulf <wulf at ping.net.au> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> 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 *****
> > >> >
> > >>
> > >>
> > >
> > >
> > >
> >
> >
>
>
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help:
> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20120816/63145fae/attachment-0004.htm>