Matthais,

Are they willing to use something like an Omrom B3F-6152 type switch?  We buy these by the bucket full and
only pay around 4 cents each.  If the can use a 6mm square switch like this there are many vendors that can
deliver a switch that will go at least 100,000 at full load of 1/10 amp or up to 1,000,000 cycles.  I would
recommend them using something like this if possible.

If there are many switches and space is tight, maybe they can consider using a 3.5mm x 6mm switch like
those found in car radios.

hope this helps.

Mark Ross


Matthias Mansfeld wrote:

> A customer wants to build a simple "switch": on the top side comes a
> BeCu spring (like the contact strips for EMV shielding), the bottom
> contact is a galvanic Ni/Au finger contact on a FR4 PCB. The switch
> is actuated (=opened) by a roentgen film (made of Polyester) which
> slides between the contact, the contacts themselves don't move
> against eachother. The customer asked me for the number of "switch
> cycles" for this construction. Has anybody out there any experiences
> with the switch cycles of such a construction? Is it comparable with
> the simple turn switches found in multimeters or other low cost
> equipment (BeCu contacts sliding on a PCB?)? How many cycles survive
> these last mentioned low cost switches? (Without grease!)
>
> Any help appreciated! Thanks in advance, regards
> Matthias Mansfeld
> -----------------------------------------------
> Matthias Mansfeld Elektronik
> * Printed Circuit Board Design and Assembly
> Am Langhoelzl 11, D-85540 Haar, GERMANY
> Phone: +49-89-4620 0937, Fax: +49-89-4620 0938
> E-Mail: [log in to unmask]
> Internet: http://www.mansfeld-elektronik.de
>
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