I'm guessing that under the right conditions, a person working in a moist and warm environment could eventually have their feet shorted by a tin whisker? :-0  



Scott Decker | Senior Engineer, PCB Design Services CID+ | Electronic Systems Center

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-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of Bob Landman

Sent: Thursday, December 06, 2018 10:53 AM

To: [log in to unmask]

Subject: [External] Re: [TN] ESD shoes or barefoot?



Without lead, tin plating can grows tin whiskers which can be very sharp pointy things, things that make Toyoda's run away according to my friends at NASA Goodard.



See https://urldefense.proofpoint.com/v2/url?u=https-3A__www.eetimes.com_document.asp-3Fdoc-5Fid-3D1264373&d=DwIBaQ&c=ilBQI1lupc9Y65XwNblLtw&r=LmNZumVuc-aB-duabR-Sh7bWYujYHapt9x3t3Yvsa1s&m=DDPoDXDCWBXJCT1KHNy-m982w3XlhqiFoeobLJ9rD24&s=tLzV9v9irh52XNvY-SQQ6tLfuIuAdld3r0QZCvq_lFE&e=



And if you remember The Princess and the Pea, a very sensitive person just might feel them. 



Bob



-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson

Sent: Thursday, December 06, 2018 10:48 AM

To: [log in to unmask]

Subject: Re: [TN] ESD shoes or barefoot?



On Wed, 5 Dec 2018 08:53:54 -0500, Tom Brendlinger <[log in to unmask]> wrote:

>I wonder which is worse, stepping on a DIP or stepping on a LEGO...



At least they are both lead-free now (smile)