I-Speed®

Low Loss, Epoxy Laminate and Prepreg

I-Speed® is a 180°C Tg FR-4 resin system for multilayer PWB applications where maximum thermal performance and reliability are required.

Thermal Performance

Tg: 180°C
Td: 360°C

Electrical Performance

Dk: 3.64
Df: 0.0060

Industry Approvals

IPC-4101 /98 /99 /101 /126
UL - File Number E41625

I-Speed® laminate and prepreg products are manufactured with Isolas’ patentable high performance multi-functional resin system, reinforced with electrical grade (E-glass) glass fabric. This system delivers a 15% improvement in Z-axis expansion and offers 25% more electrical bandwidth (lower loss) than competitive products in this space. These properties coupled with superior moisture resistance at reflow, result in a product that bridges the gap from both a thermal and electrical perspective.

The I-Speed® resin system is laser fluorescing and UV blocking for maximum compatibility with Automated Optical Inspection (AOI) systems, optical positioning systems and photo imagable solder mask imaging.

Attributes

Markets

Product Features

  • Industry Recognition
    • UL File Number: E41625
    • Qualified to UL’s MCIL Program
    • RoHS Compliant
  • Performance Attributes
    • Lead-free assembly compatible
  • Processing Advantages
    • FR-4 process compatible
    • UV blocking and AOI fluorescence
    • Multiple lamination cycles
    • HDI technology compatible

Production & Manufacturing

Currently manufactured in Asia, North America

Product Availability

  • Standard Material Offering: Laminate
    • Available in full size sheet or panel form
  • Copper Foil Type
    • HTE Grade 3
    • HVLP (VLP2) ≤2.5 micron Rz JIS, 1 oz and below is standard
    • RTF (Reverse Treat Foil)
  • Copper Weight
    • ½ to 2 oz (18 to 70 µm) available
    • Heavier copper available
    • Thinner copper foil available
  • Standard Material Offering: Prepreg
    • Roll or panel form
    • Tooling of prepreg panels
  • Glass Fabric Availability
    • E-glass
    • Square weave glass
    • Mechanically spread glass
Property Typical Value Units Test Method
Metric (English) IPC-TM-650 (or as noted)
Glass Transition Temperature (Tg) by DSC 180 °C 2.4.25C
Decomposition Temperature (Td) by TGA @ 5% weight loss 360 °C 2.4.24.6
Time to Delaminate by TMA (Copper removed)
A. T260
B. T288
>60 Minutes 2.4.24.1
Z-Axis CTE
A. Pre-Tg
B. Post-Tg
C. 50 to 260°C, (Total Expansion)
60
230
2.7
ppm/°C
ppm/°C
%
2.4.24C
X/Y-Axis CTE Pre-Tg 16 ppm/°C 2.4.24C
Thermal Conductivity 0.4 W/m·K ASTM E1952
Thermal Stress 10 sec @ 288ºC (550.4ºF)
A. Unetched
B. Etched
Pass Pass Visual 2.4.13.1
Dk, Permittivity
A. @ 1 GHz
B. @ 2 GHz
C. @ 5 GHz
D. @ 10 GHz
3.65
3.64
3.63
3.63
2.5.5.9
Bereskin Stripline
Bereskin Stripline
Bereskin Stripline
Df, Loss Tangent
A. @ 1 GHz
B. @ 2 GHz
C. @ 5 GHz
D. @ 10 GHz
0.0058
0.0060
0.0067
0.0071
2.5.5.9
Bereskin Stripline
Bereskin Stripline
Bereskin Stripline
Volume Resistivity
A. After moisture resistance
B. At elevated temperature
4.4 x 107
9.4 x 107
MΩ-cm 2.5.17.1
Surface Resistivity
A. After moisture resistance
B. At elevated temperature
2.6 x 106
2.1 x 108
2.5.17.1
Dielectric Breakdown >50 kV 2.5.6B
Arc Resistance 137 Seconds 2.5.1B
Electric Strength (Laminate & laminated prepreg) 70 (1741) kV/mm (V/mil) 2.5.6.2A
Comparative Tracking Index (CTI) 2 (250-399) Class (Volts) UL 746A
ASTM D3638
Peel Strength
A. Low profile copper foil and very low profile copper foil all copper foil >17 μm [0.669 mil]
B. Standard profile copper
    1. After thermal stress
    2. After process solutions

1.14 (6.5)

0.96 (5.5)
0.90 (5.1)
N/mm (lb/inch)
2.4.8C

2.4.8.2A
2.4.8.3
Flexural Strength
A. Length direction
B. Cross direction
67.0
62.0
ksi 2.4.4B
Tensile Strength
A. Length direction
B. Cross direction
48.3
35.6
ksi ASTM D3039
Test data generated from rigid laminate
A. Length direction
B. Cross direction
2868
2730
ksi ASTM D790-15e2
Poisson's Ratio
A. Length direction
B. Cross direction
0.173
0.152
ASTM D3039
Moisture Absorption 0.061 % 2.6.2.1A
Flammability (Laminate & laminated prepreg) V-0 Rating UL 94
Relative Thermal Index (RTI) 130 °C UL 796
The data, while believed to be accurate and based on analytical methods considered to be reliable, is for information purposes only. Any sales of these products will be governed by the terms and conditions of the agreement under which they are sold.

NOTE

Visit our site http://www.isola-group.com for more details.
Revisions:
A: Initial release - 4/17
B: Corrected units for Flexural and Tensile Strength - 8/18
C: Removed Low Dk glass option - 10/18
D: Change MOT to RTI - 5/19
E: Revised CTI to 2 - 1/21
F: Changed VLP2 to HVLP to align with common industry terms 4/21

Core Data

Construction Resin Content % Offering Thickness (inch) Thickness (mm) Dielectric Constant (DK)/ Dissipation Factor (DF)
100 MHz 500 MHz 1 GHz 2 GHz 5 GHz 10 GHz 15 GHz 20 GHz
1x1035 67.0% Standard 0.0020 0.051 3.57
0.0048
3.56
0.0052
3.56
0.0057
3.55
0.0059
3.55
0.0059
3.55
0.0059
3.55
0.0059
3.55
0.0059
1x1067 72.0% Standard 0.0025 0.064 3.47
0.0047
3.46
0.0051
3.46
0.0056
3.45
0.0058
3.45
0.0058
3.45
0.0059
3.45
0.0059
3.45
0.0059
1x1080 66.0% Standard 0.0030 0.076 3.59
0.0048
3.58
0.0052
3.58
0.0057
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
1x1086 62.0% Standard 0.0030 0.076 3.68
0.0049
3.67
0.0053
3.67
0.0058
3.66
0.0059
3.66
0.0059
3.66
0.0060
3.66
0.0060
3.66
0.0060
2x1067 62.0% Standard 0.0035 0.089 3.68
0.0049
3.67
0.0053
3.67
0.0058
3.66
0.0059
3.66
0.0059
3.66
0.0060
3.66
0.0060
3.66
0.0060
1x1078 69.5% Standard 0.0035 0.089 3.52
0.0047
3.51
0.0051
3.51
0.0057
3.50
0.0058
3.50
0.0058
3.50
0.0059
3.50
0.0059
3.50
0.0059
1x3313 52.0% Standard 0.0035 0.089 3.91
0.0052
3.90
0.0055
3.90
0.0059
3.89
0.0060
3.89
0.0060
3.89
0.0061
3.89
0.0061
3.89
0.0061
2x1035 67.0% Standard 0.0040 0.102 3.57
0.0048
3.56
0.0052
3.56
0.0057
3.55
0.0059
3.55
0.0059
3.55
0.0059
3.55
0.0059
3.55
0.0059
2x1067 66.0% Alternate 0.0040 0.102 3.59
0.0048
3.58
0.0052
3.58
0.0057
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
1x3313 57.0% Alternate 0.0040 0.102 3.79
0.0051
3.78
0.0054
3.78
0.0058
3.77
0.0060
3.77
0.0060
3.77
0.0060
3.77
0.0060
3.77
0.0060
1x2116 52.5% Alternate 0.0045 0.114 3.89
0.0052
3.89
0.0055
3.89
0.0059
3.88
0.0060
3.88
0.0060
3.88
0.0061
3.88
0.0061
3.88
0.0061
1x2116 56.5% Standard 0.0050 0.127 3.80
0.0051
3.79
0.0054
3.79
0.0058
3.79
0.0060
3.79
0.0060
3.79
0.0060
3.78
0.0060
3.78
0.0060
2x1067 72.0% Standard 0.0050 0.127 3.47
0.0047
3.46
0.0051
3.46
0.0056
3.45
0.0058
3.45
0.0058
3.45
0.0059
3.45
0.0059
3.45
0.0059
2x1086 62.0% Standard 0.0060 0.152 3.68
0.0049
3.67
0.0053
3.67
0.0058
3.66
0.0059
3.66
0.0059
3.66
0.0060
3.66
0.0060
3.66
0.0060
2x1080 66.0% Alternate 0.0060 0.152 3.59
0.0048
3.58
0.0052
3.57
0.0057
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
2x3313 57.0% Standard 0.0080 0.203 3.79
0.0051
3.78
0.0054
3.78
0.0058
3.77
0.0060
3.77
0.0060
3.77
0.0060
3.77
0.0060
3.77
0.0060
2x2116 56.5% Standard 0.0100 0.254 3.80
0.0051
3.79
0.0054
3.79
0.0058
3.79
0.0060
3.79
0.0060
3.79
0.0060
3.78
0.0060
3.78
0.0060
3x3313 57.0% Standard 0.0120 0.305 3.79
0.0051
3.78
0.0054
3.78
0.0058
3.77
0.0060
3.77
0.0060
3.77
0.0060
3.77
0.0060
3.77
0.0060
2x2116/1x3313 56.6% Standard 0.0140 0.356 3.80
0.0051
3.79
0.0054
3.79
0.0058
3.79
0.0060
3.79
0.0060
3.79
0.0060
3.78
0.0060
3.78
0.0060
3x2116 53.9% Alternate 0.0140 0.356 3.87
0.0052
3.86
0.0055
3.86
0.0059
3.86
0.0060
3.86
0.0060
3.86
0.0061
3.86
0.0061
3.85
0.0061
4x2116 56.5% Alternate 0.0200 0.508 3.80
0.0051
3.79
0.0054
3.79
0.0058
3.79
0.0060
3.79
0.0060
3.79
0.0060
3.78
0.0060
3.78
0.0060
2x2116/2x1652 52.5% Alternate 0.0210 0.533 3.89
0.0052
3.89
0.0055
3.89
0.0059
3.88
0.0060
3.88
0.0060
3.88
0.0061
3.88
0.0061
3.88
0.0061
2x3313/3x1652 50.6% Alternate 0.0240 0.610 3.94
0.0053
3.94
0.0056
3.93
0.0059
3.93
0.0060
3.93
0.0060
3.93
0.0061
3.93
0.0061
3.93
0.0061
2x2116/3x1652 53.9% Alternate 0.0280 0.711 3.87
0.0052
3.86
0.0055
3.86
0.0059
3.86
0.0060
3.86
0.0060
3.86
0.0061
3.86
0.0061
3.85
0.0061

Prepreg Data

Glass Style Resin content % Offering Thickness (inch) Thickness (mm) Dielectric Constant (DK)/ Dissipation Factor (DF)
100 MHz 500 MHz 1 GHz 2 GHz 5 GHz 10 GHz 15 GHz 20 GHz
106 72.5% Standard 0.0020 0.0510 3.46
0.0047
3.45
0.0051
3.45
0.0056
3.44
0.0058
3.44
0.0058
3.44
0.0059
3.44
0.0059
3.44
0.0059
1035 67.0% Alternate 0.0020 0.0510 3.57
0.0048
3.56
0.0052
3.56
0.0057
3.55
0.0059
3.55
0.0059
3.55
0.0059
3.55
0.0059
3.55
0.0059
1067 66.0% Standard 0.0020 0.0510 3.59
0.0048
3.58
0.0052
3.58
0.0057
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
1067 70.0% Standard 0.0023 0.0580 3.51
0.0047
3.50
0.0051
3.50
0.0057
3.49
0.0058
3.49
0.0058
3.49
0.0059
3.49
0.0059
3.49
0.0059
106 76.0% Standard 0.0024 0.0610 3.39
0.0046
3.38
0.0050
3.38
0.0056
3.37
0.0058
3.37
0.0058
3.37
0.0058
3.37
0.0058
3.37
0.0058
1035 71.5% Standard 0.0024 0.0610 3.48
0.0047
3.47
0.0051
3.47
0.0056
3.46
0.0058
3.46
0.0058
3.46
0.0059
3.46
0.0059
3.46
0.0059
1067 72.0% Standard 0.0025 0.0640 3.45
0.0047
3.44
0.0051
3.44
0.0056
3.43
0.0058
3.43
0.0058
3.43
0.0059
3.43
0.0059
3.43
0.0059
1067 74.0% Standard 0.0027 0.0690 3.43
0.0046
3.42
0.0050
3.42
0.0056
3.41
0.0058
3.41
0.0058
3.41
0.0059
3.41
0.0059
3.41
0.0059
1035 74.5% Standard 0.0027 0.0690 3.42
0.0046
3.41
0.0050
3.41
0.0056
3.40
0.0058
3.40
0.0058
3.40
0.0059
3.40
0.0059
3.40
0.0059
106 78.5% Alternate 0.0027 0.0690 3.34
0.0045
3.33
0.0049
3.33
0.0055
3.32
0.0057
3.32
0.0057
3.32
0.0058
3.32
0.0058
3.32
0.0058
1035 77.0% Alternate 0.0031 0.0790 3.37
0.0045
3.36
0.0050
3.36
0.0056
3.35
0.0058
3.35
0.0058
3.35
0.0058
3.35
0.0058
3.35
0.0058
1067 76.5% Alternate 0.0031 0.0790 3.38
0.0045
3.37
0.0050
3.37
0.0056
3.36
0.0058
3.36
0.0058
3.36
0.0058
3.36
0.0058
3.36
0.0058
1080 66.0% Standard 0.0031 0.0790 3.59
0.0048
3.58
0.0052
3.58
0.0057
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
3.57
0.0059
1086 62.0% Alternate 0.0031 0.0790 3.68
0.0049
3.67
0.0053
3.67
0.0058
3.66
0.0059
3.66
0.0059
3.66
0.0060
3.66
0.0060
3.66
0.0060
1086 64.0% Standard 0.0033 0.0840 3.63
0.0049
3.63
0.0053
3.62
0.0057
3.62
0.0059
3.62
0.0059
3.62
0.0060
3.62
0.0060
3.61
0.0060
1080 69.0% Standard 0.0034 0.0860 3.53
0.0048
3.52
0.0052
3.52
0.0057
3.51
0.0059
3.51
0.0059
3.51
0.0059
3.51
0.0059
3.51
0.0059
1086 66.5% Standard 0.0035 0.0890 3.58
0.0048
3.57
0.0052
3.57
0.0057
3.56
0.0059
3.56
0.0059
3.56
0.0059
3.56
0.0059
3.56
0.0059
1078 69.5% Standard 0.0036 0.0910 3.52
0.0047
3.51
0.0051
3.51
0.0057
3.50
0.0058
3.50
0.0058
3.50
0.0059
3.50
0.0059
3.50
0.0059
1080 72.5% Alternate 0.0039 0.0990 3.46
0.0047
3.45
0.0051
3.45
0.0056
3.44
0.0058
3.44
0.0058
3.44
0.0059
3.44
0.0059
3.44
0.0059
1086 70.0% Standard 0.0040 0.1020 3.51
0.0047
3.50
0.0051
3.50
0.0057
3.49
0.0058
3.49
0.0058
3.49
0.0059
3.49
0.0059
3.49
0.0059
3313 57.0% Alternate 0.0040 0.1020 3.79
0.0051
3.78
0.0054
3.78
0.0058
3.78
0.0060
3.78
0.0060
3.78
0.0060
3.77
0.0060
3.77
0.0060
2113 59.0% Standard 0.0041 0.1040 3.74
0.0050
3.74
0.0054
3.73
0.0058
3.73
0.0060
3.73
0.0060
3.73
0.0060
3.73
0.0060
3.73
0.0060
1078 73.5% Standard 0.0042 0.1070 3.44
0.0046
3.43
0.0051
3.43
0.0056
3.42
0.0058
3.42
0.0058
3.42
0.0059
3.42
0.0059
3.42
0.0059
3313 59.0% Standard 0.0043 0.1090 3.74
0.0050
3.74
0.0054
3.73
0.0058
3.73
0.0060
3.73
0.0060
3.73
0.0060
3.73
0.0060
3.73
0.0060
3313 63.5% Standard 0.0049 0.1250 3.64
0.0049
3.64
0.0053
3.63
0.0057
3.63
0.0059
3.63
0.0059
3.63
0.0060
3.63
0.0060
3.63
0.0060
2116 56.5% Standard 0.0051 0.1300 3.80
0.0051
3.79
0.0054
3.79
0.0058
3.79
0.0060
3.79
0.0060
3.79
0.0060
3.78
0.0060
3.78
0.0060

NOTE

Revisions:
A-Original-4/17
B-Added Standard & Alternate construction-8/18
C- Corrected 3.5 core 2x1078 to 1x1078
D - Removed Weave Type 9/20
All I-Speed glass is Spread Weave in both directions
Standard-Commonly available
Alternate-Available, but not stocked

Resources

Making Sense of Laminate Dielectric Properties

This paper highlights the critical selection factors that go beyond a typical product data sheet and explains how these factors must be considered when selecting materials for high speed applications.

Laminate & Prepreg Manufacturing

This presentation describes the process of laminate and prepreg manufacturing.

Quantifying Timing Skew In Differential Signaling using Practical Fiber Weave Model

This presentation outlines practical fiber weave effect model for skew and jitter.

PCB Material Selection for High-speed Digital Designs

This presentation describes PCB factors that limit high-speed digital performance and the PCB material selection process and Isola product solutions.

Modelling Skew and Jitter induced by Fiber weave effect in PCB dielectrics

This presentation describes a practical fiber-weave effect model to mitigate skew.

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