Arlon Electronic Materials 45NK Woven Kevlar® Reinforced Laminate and Prepreg

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Arlon Electronic Materials 45NK Woven Kevlar® Reinforced Laminate and Prepreg
Categories:	Polymer; Thermoset; Epoxy; Epoxy/Carbon Fiber Composite
Material Notes:	45NK is a woven Kevlar® aramid fiber reinforced multifunctional epoxy laminate system engineered to provide in-plane CTE values as low as 6 ppm/°C for compatibility with leadless alumina ceramic chip carriers (LCCCs) and other low expansion SMT devices where control of laminate expansion is critical for solder joint reliability. 45NK exceeds the requirements of IPC-4101/50 (Type AFG). High Tg (170°C) for improved reliability through process and in-use Low Dielectric Constant 3.9 High modulus (19 Mpsi) p-aramid woven fiber reinforcement with CTE of -4 ppm/°C provides superior X-Y CTE of 5-7 ppm/°C Process compatible with conventional high Tg multifunctional epoxy systems 100% Organic resin/reinforcement system is suitable for laser drilling RoHS/WEEE compliant Typical Applications: SMT Board Designs using LCCCs or other low expansion chip carriers SMT Designs requiring both low in-plane CTE and laser drilling Information provided by ARLON Electronic Materials.
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Available Properties

Density, ASTM D792 Method A
Water Absorption, IPC TM-650 2.6.2.1
Modulus of Elasticity, IPC TM-650 2.4.18.3
Poissons Ratio, ASTM D3039
Peel Strength, IPC TM-650 2.4.8, To Copper (1 oz./35 micron); After Process Solutions
Peel Strength, IPC TM-650 2.4.8, To Copper (1 oz./35 micron); After Thermal Stress
Peel Strength, IPC TM-650 2.4.8.2, To Copper (1 oz./35 micron); At Elevated Temperatures
Volume Resistivity, IPC TM-650 2.5.17.1, C96/35/90
Surface Resistance, IPC TM-650 2.5.17.1, C96/35/90
Dielectric Constant, IPC TM-650 2.5.5.3, may vary with resin %
Dielectric Strength, IPC TM-650 2.5.6.2
Dissipation Factor, IPC TM-650 2.5.5.3
CTE, linear, IPC TM-650 2.4.41
CTE, linear, Transverse to Flow, IPC TM-650 2.4.24, z, below Tg
CTE, linear, Transverse to Flow, IPC TM-650 2.4.24, z, above Tg
Thermal Conductivity, ASTM E1461
Glass Transition Temp, Tg, IPC TM-650 2.4.25, DSC
Flammability, UL94

Property Data

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Manufacturer Notes:
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Category Notes
Plastic

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