John
As you may be aware the values are dependent on resin-content and conditions.
I attach values measured in standard lab conditions:
Regards.....JIm Francey
AlliedSignal Laminate Systems
(also [log in to unmask])
FR4 (DISSIPATION FACTOR)
57%RC
1.3GHz 0.023
3.6GHz 0.023
5.6GHz 0.020
35% RC
1.2GHz 0.016
3.4GHz 0.018
5.4GHz 0.014
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