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Two categories of adhesive systems, thermoplastic and thermoset, have been used when bonding
( y/ y0 }! k2 B! R9 MRT/duroid 5870/5880 multilayers. Thermoplastics, such as DuPont’s FEP film or Rogers’ 3001 film, are typically selected when! N6 W1 e O5 S; V+ A
electrical properties of the adhesive layers are critical. The dielectric constant and dissipation factor of FEP is 2.1 and 0.0003.
0 p0 i& {* y f- kThe dielectric constant and dissipation factor of 3001 film is 2.28 and 0.003. Thermosets, such as FR-4 prepreg can be chosen- Y+ P2 }+ K% n. K+ ]
when electrical properties are less critical. |
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发表于 2019-4-16 10:37
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