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LOC diodes question

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pwNd

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Lets say I have a 20x LOC diode. I need to wear antistatic strap while handling it. But what after I install it in module? Will I need still to use that antistatic trap? And if I install that module in a host that is case negative and is made of metal, can my diode get broken because I touch that host without antistatic strap?

Thanks.
 





Gata

Gata

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It's good practice to ground yourself whenever you are working with the bare diode, weather it be in module or not. I like to use a wrist strap until I am done with the build and it is completely assembled. After that there is no need to wear it.
 
Jimmymcjimthejim

Jimmymcjimthejim

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I have the same question, but if you think about it, why would the Lasorb exist? It's obviously a problem, I just don't know the conditions to cause it.
 
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pwNd

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yea, but I read somewhere here that somebody said that if you use case as negative lead, then the diode is protected, or something like that
 
Krutz

Krutz

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well, i never lost a single diode where i didnt know (= where i wasnt by myself) the cause.. none fell from ESD, yet. i dont use ESD protection any more, at least not for LOC and PHR ones.. once i'm at 200$ diodes again, that will be a different story ;-)

eventually i will setup a diode, and while running it will shock it with a piezo-spark. lets see what happens, will make a clip of it..

manuel
 
john_lawson

john_lawson

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I have never used a esd device either but i recently obtained one and will use it now that its availible ,I have had a few die but dont know if it was from harvesting or ESD
 
millirad

millirad

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The ESD protection is necessary in dry climates where you are constantly getting static shocks. If you touch a large/grounded metal mass before working with the diode you remove most of the risk to the diode. I have only killed LOC's with intermittent diode connections or overcurrent situations. There are no guarantees when it comes to ESD though.
 
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Krutz

Krutz

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better save than sorry! :)
here, i use cables connected from the water tab to a ring on my finger to a selfmade aluminum-foil mat.. which isnt too practical or comfortable.. ;-)

manuel
 
dr-ebert

dr-ebert

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Jimmymcjimthejim said:
I have the same question, but if you think about it, why would the Lasorb exist? It's obviously a problem, I just don't know the conditions to cause it.
Click to expand...
On the same vein: why do anti-cellphone-radiation protectors exist, why do anti-earthray (don't know the proper word, it's supposedly harmful radiation supposedly emanating from "water veins" and odd rock formations and what not) protectors exist, why do electromagnetic water-decalcifiers exist, why do charms and amulets of any kind exist... because there is a market for them, because some people think there is a threat and they are effective against it.
 
chipdouglas

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@ the dr-ebert..... did you pay to use that quote. :whistle:

on topic now. i use a ghetto grounding strap. i put a 14 awg wire and plug it in to the ground slot of a wall outlet then tuck the other end into my belt.
 
Krutz

Krutz

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chip:
wee what he is talking about? stuff like that seems to comfort some kind of people.. :p
(my setup is almost the same! heh)

manuel
 
T

Things

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ESD isn't as worrying as you may think. Once the diode is in the Aixiz module, the only way you could kill it from ESD is if you were to touch the bare wires. Once it's inside the host, there isnt really any way for you to come into contact with the wires. I have never bothered using any anti-static devices, and never killed any diodes as a result of it...

And yes the lasOrb was built to protect from ESD, though in a pointer it'd probably be too big, they are mainly designed for in lab models.
 
Flaminpyro

Flaminpyro

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I realy hope your kidding CD and Krutz do you know that the wrist straps and other comerical grounding devices have at least a 1 meg ohm resistor in series so as to protect the wearer in case of an electrical fault in the building wiring with the ground system you should never hook your self directly to any buildings wiring :spank: you just don't know what can happen... :can:

as far as ESD and how long you need to wear protection, when the laser diode is in the circuit/connected to the driver then it is protected by that device and ESD protection should no longer be needed, I myself never wear any ESD protection I use a conductive mat and that drains the static if there is any this is just a large sheet of conductive foam like semiconductors come with there pins stuck into. when I first get a diode out of it's heat sink I can stick it's leads right into the mat anywhere..
2hykmet.jpg



peace All...

chipdouglas said:
@ the dr-ebert..... did you pay to use that quote. :whistle:

on topic now. i use a ghetto grounding strap. i put a 14 awg wire and plug it in to the ground slot of a wall outlet then tuck the other end into my belt.
Click to expand...
 
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dr-ebert

dr-ebert

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Very good point from Flaminpyro; sometimes trying to be safe can bring woes. Of course any modern house or appartment should be protected by an FI switch, but under certain circumstances even that may not help. Instead of using the grounds on a wall plug, I'd rather connect to the metal on a radiator or a water faucet.

I'm not worried about ESD on standard semiconductor electronics including LDs at all, I'm only careful with MOS devices.
 
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