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Old 10-18-2010, 03:48 AM   #1
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Default New Aixiz module holders

Was notified of these by a good friend:
http://aixiz.com/store/product_info....504d213c236175
Very low price and they look good, anyone seen these before?
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Old 10-18-2010, 04:10 AM   #2
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Default Re: New Aixiz module holders

very impressive price.
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Old 10-18-2010, 05:17 AM   #3
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Default Re: New Aixiz module holders

Those are sweet. Thanks for the heads up.
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Old 10-18-2010, 09:43 PM   #4
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Default Re: New Aixiz module holders

It doesn't look like it makes much contact with the heatsink... only at the bottom and the screw of course. I assume it would require some thermal epoxy or something to give it more contact with the heatsink.
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Old 10-19-2010, 01:27 AM   #5
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Default Re: New Aixiz module holders

Quote:
Originally Posted by xStatiCa View Post
It doesn't look like it makes much contact with the heatsink... only at the bottom and the screw of course. I assume it would require some thermal epoxy or something to give it more contact with the heatsink.

Im assuming that they are over-sized for use with LD's that are case - or +.
Ive seen in some cheaper projectors, the red laser (case - ) are wrapped
with a non electrically conductive pad, and the mount hole over-sized.

Also I dont think these are machined as claimed. They look to be
a product of a molding process... That would also explain the price.

Could be totally wrong, but thats what it looks like to me.
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Old 10-19-2010, 02:13 AM   #6
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Default Re: New Aixiz module holders

You have to figure if it slides in freely, 50% or a bit less is all the "natural" contact you'll get. You could wrap it in copper or aluminum shim stock for a tight fit and the bump the screw for insurance. Wouldn't an electrical isolator wrap kinda defeat the heat sink into a holder?
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Old 10-19-2010, 02:18 AM   #7
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Default Re: New Aixiz module holders

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Originally Posted by Vaporizer View Post
You have to figure if it slides in freely, 50% or a bit less is all the "natural" contact you'll get. You could wrap it in copper or aluminum shim stock for a tight fit and the bump the screw for insurance. Wouldn't an electrical isolator wrap kinda defeat the heat sink into a holder?
Thermally conductive electrical isolators are available.

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Old 10-19-2010, 02:49 AM   #8
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Default Re: New Aixiz module holders

Quote:
Originally Posted by xStatiCa View Post
It doesn't look like it makes much contact with the heatsink... only at the bottom and the screw of course. I assume it would require some thermal epoxy or something to give it more contact with the heatsink.
That's what I though. Even if you apply thermal paste it would still be inefficient to use as a heatsink.
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Old 10-19-2010, 03:20 AM   #9
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Default Re: New Aixiz module holders

Quote:
Originally Posted by twhite828 View Post
Thermally conductive electrical isolators are available.

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Old 10-19-2010, 03:30 AM   #10
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Default Re: New Aixiz module holders

Quote:
Originally Posted by Vaporizer View Post
There are just to many things to keep up with.
I have used it in some of my projects, namly my 18650 host seen here

18650 Cree Host - P4 emitter Hack / Mod

It's also relatively cheap, the main purpose is to electrically insulate transistors from heat sinks but at the same time conducting heat efficiently.
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Old 10-19-2010, 03:52 AM   #11
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Default Re: New Aixiz module holders

I saw that build. Nice.
I've been looking for the best price/shipping for the Arctic Thermal Paste & Adhesive.
Suggestions?
I was thinking more of a solid sheet type material is the way I read the other post.
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Old 10-19-2010, 04:37 AM   #12
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Default Re: New Aixiz module holders

This is the paste I use on my customers builds...

Heatsink Compound - 25% Silver 1.5g - Jaycar Electronics

IIRC it has an amazing 13.22W/m.k of thermal conductivity which is great!
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Old 11-08-2010, 07:06 PM   #13
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Default Re: New Aixiz module holders

I just bought two of these, and they're terrible. There's a gap around the module such that only about 30 degrees of a circle actually makes contact with the holder. Since it's aluminum I can't just cut a slot on top to clamp it down. I'd buy one of Odicforce's holders before one of these again. Even the top screw they provided had different lengths for each of the holders I bought.

I should've never bothered mounting it to a larger heatsink before really testing its connection to the module. Now I'll have to buy some thermal padding or something just to fill the gaps.

Here's a photo of the gap:

Attached Thumbnails
New Aixiz module holders-dsc_5240_resized.jpg  

Last edited by Bionic-Badger; 11-08-2010 at 07:11 PM.
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Old 11-08-2010, 07:11 PM   #14
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Default Re: New Aixiz module holders

Quote:
Originally Posted by Prototype View Post
Was notified of these by a good friend
Quote:
Originally Posted by Bionic-Badger View Post
I just bought two of these, and they're terrible. There's a gap around the module such that only about 30 degrees of a circle actually makes contact with the holder. Since it's aluminum I can't just cut a slot on top to clamp it down.
Wow that is very loose. Thanks for the heads up.

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Old 11-08-2010, 07:42 PM   #15
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Default Re: New Aixiz module holders

My Bad!! I got a sample of this when I did this review.
NEW version of handy rack for modules from AixiZ

and I thought I posted something about them but now I see that i did'nt.

BB photo is correct-- there is a lot of play on these- A shim would be very neccessary for good contact, but that also leaves room for insulating the module from the holder. I used the thin copper pieces that are found inside of most radio antennas and some thermal paste.


For the price these are not so bad. Anyone getting them can get a full refund by simply returning postage included.

Sorry I forgot to post this earlier.
Attached Thumbnails
New Aixiz module holders-new-item-aixiz-module-holder-001.jpg   New Aixiz module holders-new-item-aixiz-module-holder-002.jpg   New Aixiz module holders-new-item-aixiz-module-holder-003.jpg   New Aixiz module holders-new-item-aixiz-module-holder-004.jpg  
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Old 11-09-2010, 12:22 AM   #16
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Default Re: New Aixiz module holders

Thats a huge amount of excess diameter indeed, looks like the bore is a mm or so too big. I have a couple of such module holders from odicforce, and those are a pretty tight fit, but in the end the result is much better then what i'm seeing here.

Filling small gaps with thermal compound is fine, but with gaps this large it won't work very well either.
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