Lm1875 - Page 2

JoeBob · 8th October 2003, 04:28 AM

soundNERD, the heatsink you refer to may be spread out over the dimensions you quoted, but that is nowhere near big enough. You need a heatsink that has a solid base and fins coming out of it, there needs to be alot more solid metal and surface area for the heat to dissipate than the sink you posted a picture of. You probably won't find heatsinks big enough at digikey or the likes, nor many local electronics stores, try looking at metal shops or the best in my opinion, surplus stores.

Peter Daniel · 8th October 2003, 04:38 AM

Aluminum plate 3 x 6 will do.

JoeBob · 8th October 2003, 04:56 AM

But how think a plate? If you use 1mm think Al, I doubt that'd be enough.

A small heatsink or a (relatively) think plate would work fine for you, just don't use anything that's stamped steel, you'll just toast your devices.

Peter Daniel · 8th October 2003, 05:13 AM

1/8 or 1/4 should work fine. It may get warm, but shouldn't be too hot.

soundNERD · 12th October 2003, 02:26 AM

Sorry. Yet again, I forgot to attach the picture. Here it is.

8th October 2003, 04:38 AM	#12
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Aluminum plate 3 x 6 will do. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

8th October 2003, 05:13 AM	#14
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	1/8 or 1/4 should work fine. It may get warm, but shouldn't be too hot. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

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8th October 2003, 04:28 AM	#11
JoeBob diyAudio Member Join Date: Nov 2001 Location: Montreal, Canada	soundNERD, the heatsink you refer to may be spread out over the dimensions you quoted, but that is nowhere near big enough. You need a heatsink that has a solid base and fins coming out of it, there needs to be alot more solid metal and surface area for the heat to dissipate than the sink you posted a picture of. You probably won't find heatsinks big enough at digikey or the likes, nor many local electronics stores, try looking at metal shops or the best in my opinion, surplus stores.

8th October 2003, 04:56 AM	#13
JoeBob diyAudio Member Join Date: Nov 2001 Location: Montreal, Canada	But how think a plate? If you use 1mm think Al, I doubt that'd be enough. A small heatsink or a (relatively) think plate would work fine for you, just don't use anything that's stamped steel, you'll just toast your devices.

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