To pick the time and place of one's own doing, mindful the eye can't determine tis the finish nobler or not and suffer the dings and arrows of uncertainties' or go gently to your pad at night and await the crack of dawn to know if your fate has been sealed.
Like you said, it's Friday.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis
Sent: Thursday, October 11, 2007 11:45 PM
To: [log in to unmask]
Subject: Re: [TN] Cracks in the body of glass diodes (JANTX1N4148UR1)
Steve
Do you think brokers broke them? Sounds reasonable! At least they would
send them reeling.
Waited until Friday to post this!
Brian
Steve Gregory wrote:
> Good Morning Juan!
>
> I have your pictures posted. They are here:
>
> http://stevezeva.homestead.com/files/JTX1N4148_UR1_003.jpg
>
> http://stevezeva.homestead.com/files/JANTX1N4148_UR1_004.jpg
>
> http://stevezeva.homestead.com/files/JANTX1N4148_UR1_001.jpg
>
> I'm with Inge on this one. These cracks are in the body, not good. There is something I have noticed in two of the pictures, UR1_004 and UR_001, is that the glass seems discolored right next to the termination, which to me indicates that they may have been thermally shocked.
>
> Do you know where these diodes were purchased from? Brokers maybe? Maybe salvaged off some boards? Poorly pre-tinned to restore solderability?
>
> I wouldn't use them...
>
> Steve Gregory
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Juan T. Marugán
> Sent: Thursday, October 11, 2007 5:25 AM
> To: [log in to unmask]
> Subject: [TN] Cracks in the body of glass diodes (JANTX1N4148UR1)
>
> Good Morning,
>
> In a certain number of SMD diodes we have detected what we consider as a crack in the glass body of the diode. This condition was already present in the diodes packaged in a reel, that is, before mounting in the PWAs.
>
> What we cannot determine yet is if this condition could be acceptable. Could you help us through your valuable opinions?
>
> PD: I have sent 3 photographs to Steve Gregory.
>
> Thank you in advance.
>
> Juan T. Marugán López
> Indra Sistemas SA
> Supply Chain Management (SCM)
> Production Quality
>
> C/ Joaquín Rodrigo 11
> 28300 Aranjuez - Madrid (SPAIN)
>
>
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