Hi Members,
I was wanting to post this in "Solid State" but I thought it may be too general. I've salvaged 6 of the following heatsinks:
260(L)x130(H)x135(D)mm with a ~20mm base plate.
I was hoping to use them for an F5, Alpha Nirvana or something else entirely (fishing for suggestions 😀 class A or A/B). But I'm not sure how they translate to the recommended heatsink size. Both designs are recommending a larger attachment surface area heatsink, but they generally smaller fins and thinner base plates than what I've managed to salvage. Has anyone used something similar for a design like mentioned above?
I don't have a c/w rating unfortunately. Otherwise that may make things easier. I was also contemplating cutting them in roughly half, to turn them into 12 heatsinks...
Thanks for your time.
I was wanting to post this in "Solid State" but I thought it may be too general. I've salvaged 6 of the following heatsinks:
260(L)x130(H)x135(D)mm with a ~20mm base plate.
I was hoping to use them for an F5, Alpha Nirvana or something else entirely (fishing for suggestions 😀 class A or A/B). But I'm not sure how they translate to the recommended heatsink size. Both designs are recommending a larger attachment surface area heatsink, but they generally smaller fins and thinner base plates than what I've managed to salvage. Has anyone used something similar for a design like mentioned above?
I don't have a c/w rating unfortunately. Otherwise that may make things easier. I was also contemplating cutting them in roughly half, to turn them into 12 heatsinks...
Thanks for your time.
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Those heatsinks looks like they are designed for forced air cooling. The fins are very close together which is not good for natural, convection air flow.
You can clamp a power resistor to a sink and apply some power to it and measure the temperature of the heat sink once it reaches temperature equilibrium.
You can clamp a power resistor to a sink and apply some power to it and measure the temperature of the heat sink once it reaches temperature equilibrium.
Definitely for forced air cooling only. They will not work very well otherwise.
You may be able to ballpark a C/W from similar Aavid bonded fin heat sinks.
Bonded Fin & Brazed Fin Heat Sink Assemblies
You may be able to ballpark a C/W from similar Aavid bonded fin heat sinks.
Bonded Fin & Brazed Fin Heat Sink Assemblies
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Yes, but if you can put one or two big fans on them and run them at slow speed you should have a very low C/W-rating.
I would strap f5 boards to them and run it...if you want you could always drill 2-6 holes through all the fins.
Thanks for the opinions guys. I might look at a couple of 120mm fans underneath hooked up to a PWM controller then.
Also thanks rayma for the link! I was trying to figure out what the technique used to make the heatsinks was as they appear to be a bunch of plates compressed/fused together. Bonded fin sounds about right.
I think I've got enough parts here and a set of boards for an F5, so that may be on the cards first. But that Alpha Nirvana I like the idea of as well. I've got 6 of these heatsinks, so in time, I may just get to build them both!
Thanks again.
Also thanks rayma for the link! I was trying to figure out what the technique used to make the heatsinks was as they appear to be a bunch of plates compressed/fused together. Bonded fin sounds about right.
I think I've got enough parts here and a set of boards for an F5, so that may be on the cards first. But that Alpha Nirvana I like the idea of as well. I've got 6 of these heatsinks, so in time, I may just get to build them both!
Thanks again.
For free airflow heatsinks have much larger spaces between the fins to avoid stalling the airflow, and are black anodized so they can also radiate heat.