Park Aerospace Nelco® N4000-7 EF® Halogen-Free Epoxy

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Park Aerospace Nelco® N4000-7 EF® Halogen-Free Epoxy
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	The Nelco® N4000-7 EF® series of laminates and prepregs is a total environmental solution. This advanced halogen-free resin system provides superior CAF resistance for high temperature, lead-free assembly designs. Key Features and Benefits: Outstanding moisture resistance and thermal stability Uncompromised electrical values Halogen-Free CAF resistant High Tg FR-4 processing Applications/Qualifications: Lead-Free Assemblies Fine-Line Multilayers Backplanes Surface-Mount Multilayers BGA Multilayers Automotive Electronics MCM-Ls Direct Chip Attach Wireless Communications Telecommunications Infrastructure RoHS Compliant Meets IPC-4101/94 Specifications Information provided by Park Electrochemical Corp.
Key Words:	EP
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Physical Properties	Original Value	Comments

Density	1.92 g/cc	50% Resin Content; Internal Method
Water Absorption	0.10 %	IPC-TM-650.2.6.2.1

Mechanical Properties	Original Value	Comments
Peel Strength	5.60 pli	after exposure to process solutions; IPC-TM-650.2.4.8
	5.70 pli	at elevated temperature; IPC-TM-650.2.4.8.2a
	6.70 pli	after solder float; IPC-TM-650.2.4.8

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+13 ohm-cm	C - 96/35/90; IPC-TM-650.2.5.17.1
	1.00e+13 ohm-cm	E - 24/125; IPC-TM-650.2.5.17.1
Surface Resistance	1.00e+12 ohm	C - 96/35/90; IPC-TM-650.2.5.17.1
	1.00e+12 ohm	E - 24/125; IPC-TM-650.2.5.17.1
Dielectric Constant	3.8 @Frequency 1e+10 Hz	Split Post Cavity; Internal Method
	4.0 @Frequency 1e+9 Hz	RF Impedance; IPC-TM-650.2.5.5.9
	4.1 @Frequency 1e+6 Hz	TFC/LCR Meter; IPC-TM-650.2.5.5.3
Dielectric Strength	1000 V/mil	IPC-TM-650.2.5.6.2
Dielectric Breakdown	>= 50000 V	IPC-TM-650.2.5.6
Dissipation Factor	0.013 @Frequency 1e+6 Hz	TFC/LCR Meter; IPC-TM-650.2.5.5.3
	0.016 @Frequency 1e+10 Hz	Split Post Cavity; Internal Method
Arc Resistance	158 sec	IPC-TM-650.2.5.1

Thermal Properties	Original Value	Comments
CTE, linear	6.67 - 9.44 µin/in-°F @Temperature -40.0 - 125 °C	X/Y; IPC-TM-650.2.4.41
	36.1 µin/in-°F @Temperature 50.0 - 165 °C	Z-Axis Alpha 1; IPC-TM-650.2.4.41
	139 µin/in-°F @Temperature 165 - 260 °C	Z-Axis Alpha 2; IPC-TM-650.2.4.41
Specific Heat Capacity	0.230 BTU/lb-°F	ASTM E1461-92
Thermal Conductivity	3.26 BTU-in/hr-ft²-°F	ASTM E1461-92
Glass Transition Temp, Tg	155 °C	TMA; IPC-TM-650.2.4.24c
	165 °C	DSC; IPC-TM-650.2.4.25c
	190 °C	DMA; IPC-TM-650.2.4.24.3
Decomposition Temperature	425 °C	5% weight loss; TGA; IPC-TM-650.2.4.24.6
Flammability, UL94	V-0

Descriptive Properties
Methylene Chloride Resistance (% Weight Change)	0.02	IPC-TM-650.2.3.4.3
Pressure Cooker	Pass	60 min then solder dip @288ºC until failure (max 10 min.); IPC-TM-650.2.6.16 (modified)
T260 (minutes)	>30	IPC-TM-650.2.4.24.1
T288 (minutes)	2-4	IPC-TM-650.2.4.24.1
Z Axis Expansion (%)	3.5	50ºC to 260ºC; IPC-TM-650.2.4.41

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