LPC prone to shock?

[MISTERWILLING]

I have lost about 5 LPC diodes so far, some where probably due to reverse voltage or esd, but a few of them died in my host while not in use (I think). I was carrying them around and they might have been banged up a little bit. Will slight shock such a bumping against something or setting down too aggressively kill these diodes? So far I have had no blu-ray diodes die like this, and I was handeling them no better then my reds.

 

[BrewCityMusic]

I have had LPC's die inexplicably also - I have also seen the positive lead detached on those dead diodes (the little teeny threadlike wire on the "business end" of the diode) so I would be inclined to agree they aren't as shock-resistant as most diodes...

 

[LarryDFW]

Misterwilling;

The Open Cans and closed cans have essentially the same lead structure.

I don't think either one of them would break without a very high-G impulse (several 100G's or so).

I have broken one lead out of all my diodes (a PHR) ...
and it was due to a current impulse from my electronic power supply.

Usually, high-G impacts will break the lead at one of the connection points.

Over current will break the lead in the middle of the span, due to heating.

LarryDFW

 

[k1kb0t]

I received my LPC from Ndrew the other day and when I was removing the papers from the package the diode w/ module fell to the floor, I thought I destroyed right there. After I tested it everything seems to be working. As soon as I get my LPM I will be able to test the power.

Jon

 

[pseudolobster]

I've definitely killed some LPC's by shock. Since I don't have a vise I used to use a rubber mallet to tap the diode into the module head.. After two or three of them didn't work I changed to using my body weight to press the diodes in.

 

[k1kb0t]

Well my LPC is dead now, under 10 mins of use. I have to wait on my other 2 from Scopeguy to test some more.


Edit: It looks like I shorted it out, it powers on but the light is dim. I guess dropping it didn't kill it, I did.


Jon

 

[MISTERWILLING]

Yeah it turns out one of the batteries has gone dead. The voltage tested okay that's why i thought it was the diode, but after testing I found it drops the voltage down the second there is a load on the batteries. So I guess the LPC's aren't as fragile as I thought.

 

[Flaminpyro]

I've definitely killed some LPC's by shock. Since I don't have a vise I used to use a rubber mallet to tap the diode into the module head.. After two or three of them didn't work I changed to using my body weight to press the diodes in.

Mr. Lobster please get a small "C" clamp at the hardware store like a 4" er with that and a short piece of 1/4" copper pipe you can very gently push your diodes into the Axi mod. if you get an old telescoping radio antenna take it apart and find the section that will just fit around the front of the LD cut off a 1 inch section, u can use this to push out a bad LD in an Axi mod with the "C" clamp. have fun !!

as far as LPC go I only have one working for 3 weeks now and no problems with it. I also have a LC red from a GGW sled running at 212Ma for over a month now and I dropped it yesterday on the blacktop, still works fine, accidlenty turned it on for about 20 min stright yesterday as it was in a pouch in my coat and after putting two & two togrther I figure it must have been on at least 20 min.

Pyro... :eg:

 

[bhank]

I just lost my first and hopefully only LPC today as well. For starters, is it jsut me or is it a bitch to get out of its heat sink? I had a hell of a time getting it out of there and thats probably where i damaged it BUT it does power up it is just very dim. Sound like ESD?

 

[Eku]

Na esd most of the time compeltely destorys it.

When its very dim we call it "ledified"

 

[bhank]

oh ok haha. Well what are the possible causes of ledification?

 

[dr-ebert]

Too much current and/or too high temperature (high current will lead to high temp, but the electric fields from high current densities are damaging in themselves as well).

I had an experience like Misterwilling as well - turning my red on one day and it was very dim, while the day before it worked perfectly. Got quite a shock as the battery still read 2.7V, but this dropped to almost zero under load. I don't know yet whether the battery capacity was underrated, or if there was some current leak, or if I simply totally lost track of the runtime...

I don't see why red LOCs should be more susceptible to damage by mechanical shock than bluerays (of course, one obvious damage potential lies in the fact that they're open, so simply carelessly inserting an Aixiz spring might break the bonding wire). Tapping them with a hammer, however, no matter how gently, is definitely not recommended!

 

[Darkarmyofone]

omg, thats so funny, i killed my first 3 LOC's because i didnt have a $3.99 cent C - clamp "its like a vice....but not" once i got that, i just use two peices of cloth to protect each end of the aixiz module, and slowly twist, while making sure the bussiness aixiz end doesnt spin in place, and slice the pins...write that down lol. from experiance. not fun. expensive!

C clamps are a diodes best friend.....but they HATE rubber mallets lol lobster, inovative though, at least you didnt use a hammer lol

Dark

Oh and every LCC i've ever had died before it even made it to a host. i think like 4-5 LCC's.