Diode VERY slightly skewed in aixiz module - concern ?

I just recently ordered and received this 445nm diode premounted to a module from one of the forum sellers... and it appears to be pressed in ever so slightly crooked.

I have allready contacted the seller and while he's provided me with very good service, and offered that I could send it back and have it fixed by him, I really don't want to go through that trouble if I don't need to. We're talking about a very, very small angle here.

I have done my best to take a few pictures that show the alignment, highlighted in blue is where the diode meets the angled wall of the module perfectly; whilst the part highlighted in red sits just a bit deeper, equivalent to the thickness of about 4-5 sheets of regular weight printer paper... (lack of a better tool for measuring such a small gap)





I was wondering if anyone here ever had the same issues, and if so, did it impact the final product; what are your recommendations; or does anyone have a DIY simili press-a-magig trick to suggest ?

you want the whole thing to sit in as deep as possible.
So im a bit confused.
When i press my diodes i press them in hard and flush to the bottom.
Looks like he stopped a tiny bit early.
Your lens may not take all the light or get a weird beam.

So there is a 'bottom'... I could just push the side thats not completely flush in a little bit further ? by using something like a 4-5 mm socket and c-clamp ?

Do you know if the diode is pressed as far as it can go? If it is not then you could just use a vice and something properly shaped to finish the press. If the seller used a press tool that properly contersinks the diode then it should be all the way in and if so then it could be the module itself.

They are from China and sometimes are not perfect. You really have to watch them. I have seen ones that only had the diode pocket only partially machined or no pocket at all. The worst is when they are missing the threads for the lenses. Quite a crappy suprise after you press your didoe and add leads. Then you go to screw your lens in and there is nothing for it to screw into.

Anyway if it is not pressed all the way in it may not have as good thermal contact but not something detrimental to the diode. I would say the biggest question is how straight the beam is.

EDIT just saw kiyoukan reply.

A socket may not get it in all the way. Some people use a .22 shell, or air hose fittings.

And if I were to use a vice and try to push it in that last little bit, how much force would I want to be putting on the thing... if it's allready in there all the way and it's the module that's not perfect, I don't want to force it and crack something open.

cilegray said:

And if I were to use a vice and try to push it in that last little bit, how much force would I want to be putting on the thing... if it's allready in there all the way and it's the module that's not perfect, I don't want to force it and crack something open.

Click to expand...

It should not take excessive mechanical force to get it all the way in. I do it with a press tool and a pair of pliers so that is all the force you really need.

DTR said:

It should not take excessive mechanical force to get it all the way in. I do it with a press tool and a pair of pliers so that is all the force you really need.

Click to expand...

Correct, granted the diode isn't bent or there is something stuck under
the lifted edge..

Don't know why I get a twitch when I see no silver paste filling those
gaps :scowl:

I swear by my thermal paste, couldn't live without it

I ended up using the mandrel from a miniature hand-drill and a pair of channel locks... From what I can tell it sits alot straighter now. Thanks guys



EDIT : As for thermal paste, there was a bunch smeared on there when I got it, but I had to clean it off to verify the alignment. Should I just fill those voids with some arctic silver ? I have a whole bunch of 'Arctic' products lying around from when I used to own a computer modding and watercooling website... even some of their 'prototype' stuff that ... well... i shouldn't use, since there must be a good reason why they never put it out on the market

Glad to hear you got it fixed.
Be safe with it.

As long as it's pressed in there, you can forgo the thermal paste. You know how it works, and you know it's too late anyways ;-)

Have fun with your build!

BShanahan14rulz said:

As long as it's pressed in there, you can forgo the thermal paste. You know how it works, and you know it's too late anyways ;-)

Have fun with your build!

Click to expand...

Thanks, I will, if Canada Post can work with me... :/
There's slow, and then there's CP.