Dielectric Materials

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Covering a broad range of dielectric constants while maintaining low loss and high density, these materials can be used as matching media in microwave garnet devices and also generally where a high dielectric constant, low loss material is required.

Property (Symbol) unit	Dielectric Constant (ε') (@ 9.4 GHz) (+/- 5%)	Dielectric Loss Tangent (ε"/ε') 10 ^-4	Coefficient of Linear Expansion °C^-1 x 10^-6	Coefficient of Thermal Expansion °C^-1 x 10^-6	Thermal Conductivity cal/cm²/cm/sec/°C x 10^-3
K-4	4.3	< 2	+ 55	2.4	7
K-6	6.3	< 2	+107	10	9
K-9	9	< 2	+ 115	6	45
K-9.5	9.5	< 1.5	+ 100	7.5	25
K-12	12	< 2	+ 100	7.5	25
K-15	15	< 2	+ 100	7.5	25
K-16	16	< 2	+ 100	7.5	10
K-18	18	< 10	+ 120	8	10
K-20	20	< 10	+ 80	8.5	10
K-25	25	< 10	+ 10	9	10
K-30	30	< 10	- 125	9.2	10
K-50	50	< 10	- 370	9.7	10
K-80	80	< 10	- 700	10	10
K-100	100	< 10	- 980	10.3	10
K-140	140	<15	- 1100	10.7	10
K-160	160	< 15	- 1250	10.8	10
K-250	250	< 50	- 2600	10	10

National Magnetics Group, Inc. National Magnetics Group, Inc.

Dielectric Materials

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