[sdiy] ESD

[harrybissell]

Most of my experience is similar to Fredrik's... but I have
seen one actual ESD event that caused a degradation of an
opamp (TL074) in a S/H circuit. After the event, it was not
a good sample / hold anymore.  In this case, I could actually
see / feel the spark

H^) harry

Barry Klein wrote:

> Go buy a handful of blue high intensity leds, sit
> down in your cubical chair and handle them and then try them.  Or use one
> in a front panel backlight under a button switch and get enough ESD to spark
> to the button.
>
> Also check this out: http://www.excess-solutions.com/SpecSheets/307E.pdf
>
> Barry
>
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of Fredrik Carlqvist
> Sent: Wednesday, December 22, 2004 4:13 AM
> To: 'Synth-Diy'
> Subject: [sdiy] ESD
>
> I just read a post about ESD killing blue LEDs.
>
> I have yet to see my first ESD fatality. I have done several large CMOS
> projects (80+ ICs soldered directly into the PCB). I must have soldered more
> than 1000 CMOS devices. Without a single IC failure. The only protection I
> use is cotton clothing and the occational grounding my right hand to the
> kitchen sink. My soldering station is not even grounded.
>
> Why is it that some have these problems and I don't?
>
> 1. Wearing synthetic fibre clothing?
> X. Wearing rubber soled shoes on plastic floors?
> 2. Using cat skin to clean the IC before insertion?
>
> Fredrik C