Re: protection against vibration

On Mon, 04 Jun 2007 20:58:29 -0700, veeresh <veereshin@xxxxxxxxx>
wrote:

On Jun 5, 7:08 am, John Larkin
<jjlar...@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
On Mon, 04 Jun 2007 03:22:26 -0700, veeresh <veeres...@xxxxxxxxx>
wrote:

Hi,
On one of my PCBs i'm using a heavy IC. It is a 70pin gull wing
package. And, the problem is that the pins are breaking near the IC
package. I don't want to use RTV, as it's difficult to remove. What
best I can do to protect this against vibration tests?

Thanks and Regards,
Veeresh

As others have mentioned, it's flex resonances of the board itself
that are probably the problem. Boards will blur at resonance, and
literally throw parts off. The board should be stiffened, damped,
or
vibration isolated.
Hello Sir,
What can we use for this vibration isolation? Is it some kind of
washers, and studs that we use to fix the board in the box?
~veeresh




Google "vibration isolator". The classic vendor for this stuff is at
lord.com.

John

.

Relevant Pages

  • Re: protection against vibration
    ... It is a 70pin gull wing ... package. ... best I can do to protect this against vibration tests? ... it's flex resonances of the board itself ...
    (sci.electronics.design)
  • Re: protection against vibration
    ... package. ... the problem is that the pins are breaking near the IC ... best I can do to protect this against vibration tests? ... it's flex resonances of the board itself ...
    (sci.electronics.design)
Quantcast