Can a piezo buzzer generate damaging voltages?

From	John Speth <johnspeth@yahoo.com>
Newsgroups	comp.arch.embedded
Subject	Can a piezo buzzer generate damaging voltages?
Date	2017-10-09 17:15 -0700
Organization	Aioe.org NNTP Server
Message-ID	<orh3ef$1qpp$1@gioia.aioe.org> (permalink)

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My team is being asked to find out why a circuit is failing for no 
obvious reason.  The circuit has a piezo buzzer (CEP2242 from CUI, Inc). 
  The buzzer is driven by a MCU driven FET that completes a circuit like 
this: high side power 3.3V -> buzzer -> FET -> ground (BSS123LT1 FET on 
the low side).

Does anybody have any experience with the possibility of a piezo buzzer 
generating damaging voltage spikes when dropped?  We have no protection 
diodes on this part of the circuit.

At this stage, we have no information of exactly what's failing.  We do 
have evidence that some failed units have been dropped.  I'm following 
through on a hypothetical failure path which we need to either consider 
further or discard.

Thanks - JJS

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Thread

Can a piezo buzzer generate damaging voltages? John Speth <johnspeth@yahoo.com> - 2017-10-09 17:15 -0700
  Re: Can a piezo buzzer generate damaging voltages? Clifford Heath <no.spam@please.net> - 2017-10-10 13:55 +1100
  Re: Can a piezo buzzer generate damaging voltages? o pere o <me@somewhere.net> - 2017-10-11 11:08 +0200
    Re: Can a piezo buzzer generate damaging voltages? Clifford Heath <no.spam@please.net> - 2017-10-11 22:37 +1100
      Re: Can a piezo buzzer generate damaging voltages? o pere o <me@somewhere.net> - 2017-10-16 09:56 +0200
  Re: Can a piezo buzzer generate damaging voltages? Chris <xxx.syseng.yyy@gfsys.co.uk> - 2017-10-11 23:10 +0000
    Re: Can a piezo buzzer generate damaging voltages? John Speth <johnspeth@yahoo.com> - 2017-10-11 16:46 -0700
      Re: Can a piezo buzzer generate damaging voltages? "petrus bitbyter" <petrus.bitbyter@hotmail.com> - 2017-10-12 15:32 +0200
        Re: Can a piezo buzzer generate damaging voltages? Chris <xxx.syseng.yyy@gfsys.co.uk> - 2017-10-12 14:31 +0000
        Re: Can a piezo buzzer generate damaging voltages? John Speth <johnspeth@yahoo.com> - 2017-10-12 13:48 -0700
          Re: Can a piezo buzzer generate damaging voltages? Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2017-10-15 18:12 +0100

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