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November 2010

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Subject:
From:
Chris Mahanna <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Chris Mahanna <[log in to unmask]>
Date:
Thu, 18 Nov 2010 10:08:01 -0500
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Not to discount any advice so far,
I would like to re-emphasize that all are not created equal.  LED reliability testing is a hot topic for good reason.
While you will see 260C ratings, keep in mind that very significant wear-out life will be lost during each soldering thermal excursion cycle.

Chris

Chris Mahanna
Robisan Laboratory



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gabriele SALA
Sent: Thursday, November 18, 2010 9:52 AM
To: [log in to unmask]
Subject: Re: [TN] Led Failures Please help

As for Bob says, make sure about Moisture Sentivity Level of this LEDs and follow the right handling procedures.

Failures like those have bine stronlgly reduced by following a rigid MSD Handling procedure (as for J-STD-0033)  Mainly if LED have to be reflowed by Lead Free temperature.

Also other important point is the ESD sensitivity of LEDs. In a few cases it was necessary to adop Ionizers at packaging and shipping station/desk.

Best Regards

G. Sala

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