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November 1997

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Subject:
Rogers TMM
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Date:
Thu, 20 Nov 1997 12:33:10 +0100
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Rogers (22 lines) 
To knowers of RF-materials.

"Is it acceptable with discoloration of TMM after 1h in +150Celcius? The
TMM has a thick brass backside. TMM is inert to most normal solvents and
etchants and Tg is more than 400Celcius. After 1h it has changed from
Tefon-grey to Budweisser yellow. Someone who is familiar with this?"

                                    Ingemar Hernefjord
                                 Ericsson Microwave Systems

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