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Old 12th August 2007, 08:00 PM   #1
arupg is offline arupg  Latvia
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Default Heatsink for 8-DIP Opamp

Can someone help me find a heatsink for clipping on the 8-DIP opamp that I've biased to Class-A and now needs a suitable heatsink.

Thanks!
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Old 12th August 2007, 08:28 PM   #2
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Thermalloy, now Aavid, used to have clip-ons for the longer DIPs, not sure about 8-pin though. They also had little finned extrusions the size of the top of the chip, that you'd just epoxy on. If I need to heat sink an IC, I just cut out a small piece of aluminum, bend it into a U shape, and epoxy it on. If there's space around the chip, sometimes just a simple flat plate will do the trick.
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Old 12th August 2007, 08:37 PM   #3
hihopes is offline hihopes  South Africa
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I got some stick-on ones from Avnet (who seem to have offices all over the world, though some with slightly different names). They are actually for longer ic's - 14 pin, I think, but I just cut them in half and they fit an 8 pin dip beautifully.
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Old 13th August 2007, 02:49 AM   #4
KP11520 is offline KP11520  United States
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Hi arupg,

Was this done on an Amp, Preamp or CD Player?
Can you share the details of what op amp(s) and the method you used to bias the op amp(s). Any test measurements that you used and what impact on the difference of what you heard would also be interesting!

Thank you!

Regards//keith
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Old 13th August 2007, 07:06 AM   #5
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dip-8 is too small for a clip-on.
Fischer ICK-L is an adhesive type, used with thermal conducting tape.
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Old 13th August 2007, 07:22 AM   #6
arupg is offline arupg  Latvia
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Hi Conrad Hoffman & hihopes:

Thanks for the lead. Much appreciated!!

--------------------------

Hi Keith:

My Opamp that I biased into Class-A operation is in a Digital-to-Analog Processor; Audio Alchemy Dac-in-the-box (DITB).
Please read my post
Which Opamp Do U suggest ??

Most of your answers are there.

Cheers!

------------------
Arup
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Old 13th August 2007, 08:14 AM   #7
arupg is offline arupg  Latvia
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I did manage to locate the perfect item that I was looking for. Its a 8-DIP clip-on.

Please see this link:

http://www.aavidthermalloy.com/cgi-b...=580100b00000g

Now, where do I find this??
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Old 13th August 2007, 01:10 PM   #8
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30 C/W, WOW !
I'd like me some of those too.
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Old 13th August 2007, 01:15 PM   #9
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Default Re: Heatsink for 8-DIP Opamp

Quote:
Originally posted by arupg
Can someone help me find a heatsink for clipping on the 8-DIP opamp that I've biased to Class-A and now needs a suitable heatsink.

Thanks!
Just wondering, but how much have you bias the opamp really? Do you know how to calculate minimum required current? Give me this data:

Supply voltage
Load
Max output voltage for REAL signals
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Old 13th August 2007, 01:22 PM   #10
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They are available in single units at Arrow Electronics.....

http://www.arrownac.com/aws/pg_webc/...=click_through

There is a $10 international order fee on top of the normal shipping fees. If you two twist my arm enough maybe I will put in an order for some and ship them to you myself.
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