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Ensinger PEI

Arlon Electronic Materials 49N Multifunctional Epoxy Low-Flow Prepreg
Categories: Polymer; Thermoset; Epoxy; Epoxy, Thermally Conductive
Material Notes: 49N is a low-flow epoxy prepreg engineered for bonding multilayer epoxy rigid-flex or attaching heat sinks to multilayer PCBs. With a high Tg, the prepreg can be used in high-performance or high-temperature applications compared to a standard difunctional epoxy low-flow.

  • Multifunctional epoxy resin system with a Tg of 170°C offers improved high-temperature and PTH reliability.
  • Engineered with discrete flow ranges and fiberglass styles to optimize flexibility
  • Electrical and mechanical properties meeting the requirements of IPC-4101/21, modified to be "Low-Flow"
  • RoHS/WEEE compliant
  • Short cure (45 minutes at 360°F) for improved manufacturing productivity

Typical Applications:

  • Bonding multilayer epoxy rigid-flex
  • Bonding adhesiveless epoxy rigid-flex
  • Attaching heat sinks to multilayer PCBs
  • Dielectric insulators

Information provided by ARLON Electronic Materials.
Vendors: Arlon Materials for Electronics (MED) is a major manufacturer of specialty high performance laminate and prepreg materials for use in a wide variety of printed circuit board (PCB) applications and in several distinctive markets.

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Physical PropertiesMetricEnglishComments
Density 1.75 g/cc0.0632 lb/in³ASTM D792 Method A
Water Absorption 0.10 %0.10 %IPC TM-650 2.6.2.1
 
Mechanical PropertiesMetricEnglishComments
Modulus of Elasticity 17.9 GPa2600 ksiIPC TM-650 2.4.18.3
Flexural Strength 579 MPa84000 psiIPC TM-650 2.4.4
Poissons Ratio 0.170.17ASTM D3039
Peel Strength 1.58 kN/m9.00 pliAfter Thermal Stress; IPC TM-650 2.4.8
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 3.30e+12 ohm-cm3.30e+12 ohm-cmE24/125; IPC TM-650 2.5.17.1
 2.60e+13 ohm-cm2.60e+13 ohm-cmC96/35/90; IPC TM-650 2.5.17.1
Surface Resistance 4.00e+12 ohm4.00e+12 ohmE24/125; IPC TM-650 2.5.17.1
 2.90e+13 ohm2.90e+13 ohmC96/35/90; IPC TM-650 2.5.17.1
Dielectric Constant 4.4
@Frequency 1e+6 Hz		4.4
@Frequency 1e+6 Hz		IPC TM-650 2.5.5.3
Dielectric Strength 39.4 kV/mm1000 kV/inIPC TM-650 2.5.6.2
Dissipation Factor 0.025
@Frequency 1e+6 Hz		0.025
@Frequency 1e+6 Hz		IPC TM-650 2.5.5.3
 
Thermal PropertiesMetricEnglishComments
CTE, linear 14.0 - 16.0 µm/m-°C7.78 - 8.89 µin/in-°FIPC TM-650 2.4.41
CTE, linear, Transverse to Flow 87.0 µm/m-°C48.3 µin/in-°Fz, below Tg; IPC TM-650 2.4.24
 246 µm/m-°C137 µin/in-°Fz, above Tg; IPC TM-650 2.4.24
Thermal Conductivity 0.250 W/m-K1.74 BTU-in/hr-ft²-°FASTM E1461
Glass Transition Temp, Tg 170 °C338 °FDSC; IPC TM-650 2.4.25
Decomposition Temperature 291 °C556 °FOnset; IPC TM-650 2.3.41
 302 °C576 °F5 percent; IPC TM-650 2.3.41
Flammability, UL94 V-0V-0
 
Descriptive Properties
IPC Delamination - T260 (minutes)10IPC TM-650 2.4.24.1
IPC Delamination - T288 (minutes)0IPC TM-650 2.4.24.1
IPC Delamination - T300 (minutes)0IPC TM-650 2.4.24.1
Z-Axis Expansion (%)3.1IPC TM-650 2.4.24 (50-260°C)

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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