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	Metric	English	Comments

Density	1.92 g/cc	0.0694 lb/in³	50% Resin Content; Internal Method
Water Absorption	0.10 %	0.10 %	IPC-TM-650.2.6.2.1

Mechanical Properties	Metric	English	Comments
Peel Strength	0.982 kN/m	5.60 pli	after exposure to process solutions; IPC-TM-650.2.4.8
	0.999 kN/m	5.70 pli	at elevated temperature; IPC-TM-650.2.4.8.2a
	1.17 kN/m	6.70 pli	after solder float; IPC-TM-650.2.4.8

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+13 ohm-cm	1.00e+13 ohm-cm	C - 96/35/90; IPC-TM-650.2.5.17.1
	1.00e+13 ohm-cm	1.00e+13 ohm-cm	E - 24/125; IPC-TM-650.2.5.17.1
Surface Resistance	1.00e+12 ohm	1.00e+12 ohm	C - 96/35/90; IPC-TM-650.2.5.17.1
	1.00e+12 ohm	1.00e+12 ohm	E - 24/125; IPC-TM-650.2.5.17.1
Dielectric Constant	3.8 @Frequency 1e+10 Hz	3.8 @Frequency 1e+10 Hz	Split Post Cavity; Internal Method
	4.0 @Frequency 1e+9 Hz	4.0 @Frequency 1e+9 Hz	RF Impedance; IPC-TM-650.2.5.5.9
	4.1 @Frequency 1e+6 Hz	4.1 @Frequency 1e+6 Hz	TFC/LCR Meter; IPC-TM-650.2.5.5.3
Dielectric Strength	39.4 kV/mm	1000 kV/in	IPC-TM-650.2.5.6.2
Dielectric Breakdown	>= 50000 V	>= 50000 V	IPC-TM-650.2.5.6
Dissipation Factor	0.013 @Frequency 1e+6 Hz	0.013 @Frequency 1e+6 Hz	TFC/LCR Meter; IPC-TM-650.2.5.5.3
	0.016 @Frequency 1e+10 Hz	0.016 @Frequency 1e+10 Hz	Split Post Cavity; Internal Method
Arc Resistance	158 sec	158 sec	IPC-TM-650.2.5.1

Thermal Properties	Metric	English	Comments
CTE, linear	12.0 - 17.0 µm/m-°C @Temperature -40.0 - 125 °C	6.67 - 9.44 µin/in-°F @Temperature -40.0 - 257 °F	X/Y; IPC-TM-650.2.4.41
	65.0 µm/m-°C @Temperature 50.0 - 165 °C	36.1 µin/in-°F @Temperature 122 - 329 °F	Z-Axis Alpha 1; IPC-TM-650.2.4.41
	250 µm/m-°C @Temperature 165 - 260 °C	139 µin/in-°F @Temperature 329 - 500 °F	Z-Axis Alpha 2; IPC-TM-650.2.4.41
Specific Heat Capacity	0.962 J/g-°C	0.230 BTU/lb-°F	ASTM E1461-92
Thermal Conductivity	0.470 W/m-K	3.26 BTU-in/hr-ft²-°F	ASTM E1461-92
Glass Transition Temp, Tg	155 °C	311 °F	TMA; IPC-TM-650.2.4.24c
	165 °C	329 °F	DSC; IPC-TM-650.2.4.25c
	190 °C	374 °F	DMA; IPC-TM-650.2.4.24.3
Decomposition Temperature	425 °C	797 °F	5% weight loss; TGA; IPC-TM-650.2.4.24.6
Flammability, UL94	V-0	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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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