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Looking for those hard to find PC Boards? We have them cheaper than you can find elsewhere. If you see it cheaper, PLEASE give us a chance to beat that price for you. We have the widest variety of boards in the industry. If you don't see it, just ask. We have boards from .005" thick to double sided boards with 4 oz. of copper on each side.

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FR-4 Glass Epoxy Technical Product Information

FR-4 Glass Epoxy , designated FR-4 by NEMA, is a woven glass cloth construction laminate with an epoxy resin binder. ( an 8 ply construction in .059'' thickness.) This material conforms to the requirements of military specification 13949, revision F, type GF, and is rated 94V-O by Underwriters Laboratories. This material is generally used in communications, computer, computer peripherals, instruments, industrial controls, and automotive electronics. It offers advantages in the following areas: Electrical Properties—Excellent for high technology communications and computer systems.

Mechanical Properties—Greater than paper base and composite materials.

Moisture Absorption—Lower than paper base and composite laminates.

Glass Transition Temperature—Higher than most FR-4 laminates.

Solder Float—Passes 160 seconds at 575F.

Typical Values

Property Units Value
Thickness Inches .059
Retained Resin % 44

Thermal Properties

Property Units Value Condition
Tg, min. ( DSC ) C 135  
CTE x-axis ppm/C 14 Ambient to Tg
CTE y-axis ppm/C 13 Ambient to Tg
CTE z-axis ppm/C 175 Ambient to 288 C
Solder Float, 288 C seconds >120 Condition A

Electrical Properties

Property Units Value Condition
Permittivity ( DK ) max.   4.7 C-24/23/50
@ 500 Mhz   4.35  
@1 GHz ( HP4291 )   4.34  
Loss Tangent ( DF ), max. @      
1 MHz ( 2 Fluid Cell )   0.020  
500 Mhz   0.017  
1 GHz ( 2 Fluid Cell )   0.016  
Surface Resistivity, min. megohms 2 X 10^5 Condition F
    1 X 10^8 E-24/125
Volume Resistivity, min. min. 8 X 10^7 Condition F
  megohm- cm 2 X 10^7 E-24/125
Dielectric Breakdown, min kV 55 D-48/50
Arc Resistance, min. seconds 100  

Physical Properties

Property Units Value Condition
Peel Strength, 1 oz. lb./in. 9.0 Condition A
    9.0 After Thermal Stress
    9.0 E-1/125
Flexural Strength - LW psi 80000 Condition A
Flexural Strength - CW psi 60000 Condition A
Warp & Twist % 0.5 Condition
Flammability   V-0 UL94
Moisture Absorption % < 0.25 D-24/23
Tensil Strength - LW psi 50000 Condition A
Tensil Strength - CW psi 40000 Condition A
Tensil Modulus ( Young's ) - LW psi 3.5 X 10^6 Condition A
Tensil Modulus ( Young's ) - CW psi 3.0 X 10^6 Condition A
Flexural Modulus ( Taylor's ) - LW psi 2.7 X 10^6 Condition A
Flexural Modulus ( Taylor's ) - CW psi 2.4 X 10^6 Condition A
Poisson's Ratio - LW   0.136 Condition A
Poisson's Ratio - CW   0.118 Condition A

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Contact Information

Telephone

516-349-1273

FAX

631-563-3389

Postal address

40 Diamond Drive, Plainview NY 11803

 

 

Electronic mail

General Information: injectorall@mindspring.com

Copyright 2003 Injectorall Electronics Corp.

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