Jay,

Ultrasonic by itself will not normally damage flex circuit
constructions.

Having said that, what adhesive system and anti-tarnish are you using,
and what is the working liquid in your ultrasonic? If the adhesive or
anti-tarnish is prone to attack by the solution the ultrasonic can
enhance the effect.

Andy Magee
Flex Guru
[log in to unmask]



   From:
         "Zhang, Jay" <[log in to unmask]>



Would it be Okay to use ultra-sonic to clean polyimide based flex
circuit with metal stiffener. Would the ultra-sonic weaken the bond
between the circuit and stiffener, destroy the anti-tarnish coating on
bare copper, or cause any de-lamination?

Thanks in advance for any input.

Jay Zhang
Sheldahl, Inc.
507-663-8399

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################