IS680 AG

Very Low-Loss Laminate

IS680 AG laminate materials exhibit exceptional electrical properties which are very stable over a broad frequency and temperature range.

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Thermal Performance

Tg: 200°C
Td: 360°C

Electrical Performance

Dk: 3.00 / 3.38 / 3.45 / 3.48
Df: 0.0020 - 0.0029

Industry Approvals

IPC-4103 /17
UL - File Number E41625

IS680 AG is suitable for many of today’s commercial RF/ microwave printed circuit designs. It features a dielectric constant (Dk) that is stable between -55°C and +125°C up to W-band frequencies. In addition, IS680AG offers an ultra-low dissipation factor (Df), making it an extremely cost-effective alternative to PTFE and other commercial microwave laminate materials in double sided applications.

Attributes

RadioFrequencyMicrowave 1

Markets

AerospaceDefense RadioFrequencyMicrowave

Product Features

  • Industry Recognition
    • UL File Number: E41625
    • RoHS Compliant
  • Processing Advantages
    • FR-4 process compatible
    • Reduced drill wear
    • No plasma desmear required
    • Consistent dielectric spacing

Production & Manufacturing

Currently manufactured in Europe

Product Availability

  • Standard Material Offering: Laminate
    • 20, 30, 60 mil (0.51, 0.76, 1.5 mm)
  • Copper Foil Type
    • HVLP (VLP2) ≤2.5 micron Rz JIS
  • Copper Weight
    • ½, 1 and 2 oz (18, 35 and 70 µm) available
    • 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 200 °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)
44.7
191
2.9
ppm/°C
ppm/°C
%
 2.4.24C
X/Y-Axis CTE Pre-Tg 12 ppm/°C 2.4.24C
Thermal Conductivity 0.38 - 0.53 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 @ 10 GHz 3.00 — 2.5.5.5
Df, Loss Tangent @ 10 GHz 0.0020 — Bereskin Stripline
Dk, Permittivity @ 10 GHz 3.38 — 2.5.5.5
Df, Loss Tangent @ 10 GHz 0.0026 — Bereskin Stripline
Dk, Permittivity @ 10 GHz 3.45 — 2.5.5.5
Df, Loss Tangent @ 10 GHz 0.0026 — Bereskin Stripline
Dk, Permittivity @ 10 GHz 3.48 — 2.5.5.5
Df, Loss Tangent @ 10 GHz 0.0029 — Bereskin Stripline
Volume Resistivity C-96/35/90 1.33 x 107 MΩ-cm 2.5.17.1
Surface Resistivity C-96/35/90 1.33 x 105 MΩ 2.5.17.1
Dielectric Breakdown 45.4 kV 2.5.6B
Arc Resistance 139 Seconds 2.5.1B
Electric Strength (Laminate & laminated prepreg) 45 (1133) kV/mm (V/mil) 2.5.6.2A
Comparative Tracking Index (CTI) 2 Class (Volts) UL 746A
ASTM D3638
Peel Strength 1 oz. EDC foil 0.70 (4.01) N/mm (lb/inch)
2.4.8.2A
Flexural Strength
A. Length direction
B. Cross direction
259 (37.5)
197 (28.5)
 MPa (kpsi) 2.4.4B
Tensile Strength
A. Length direction
B. Cross direction
193 (28.0)
179 (26.0)
 MPa (kpsi) ASTM D3039
Poisson's Ratio
A. Length direction
B. Cross direction
0.122
0.120
 — ASTM D3039
Moisture Absorption 0.10 % 2.6.2.1A
Flammability (Laminate & laminated prepreg) V-0 Rating UL 94
Relative Thermal Index (RTI) 110 °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: Change MOT to RTI 5/19
D: Changed VLP2 to HVLP to align with common industry terms 4/21
E: Corrected RTI Value

Download Dk/Df Tables PDF

Core Data

Thickness (inch) Thickness (mm) Dielectric Constant (DK)/ Dissipation Factor (DF)
2 GHz 5 GHz 10 GHz 15 GHz 20 GHz
0.020 0.508 3.00
0.0020		 3.00
0.0020		 3.00
0.0020		 3.00
0.0020		 3.00
0.0020
0.030 0.762 3.00
0.0020		 3.00
0.0020		 3.00
0.0020		 3.00
0.0020		 3.00
0.0020
0.060 1.524 3.00
0.0020		 3.00
0.0020		 3.00
0.0020		 3.00
0.0020		 3.00
0.0020
0.030 0.762 3.38
0.0026		 3.38
0.0026		 3.38
0.0026		 3.38
0.0026		 3.38
0.0026
0.060 1.524 3.38
0.0026		 3.38
0.0026		 3.38
0.0026		 3.38
0.0026		 3.38
0.0026
0.030 0.762 3.45
0.0026		 3.45
0.0026		 3.45
0.0026		 3.45
0.0026		 3.45
0.0026
0.060 1.524 3.45
0.0026		 3.45
0.0026		 3.45
0.0026		 3.45
0.0026		 3.45
0.0026
0.060 1.524 3.48
0.0029		 3.48
0.0029		 3.48
0.0029		 3.48
0.0029		 3.48
0.0029

NOTE

Revisions:
A: Original Release - 4/17

Resource Title & Summary Date Updated
IS680 AG Processing Guide 06/30/2020
IS680 AG Laminate Safety Data Sheet 07/21/2020
IS680 AG Laminate RoHS Declaration 11/01/2022

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