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We believe this is the most comprehensive Microwave and RF materials listing currently available on the Internet.

For ease of use, products are listed in order of ascending dielectric constant.


Specifications may change without notice, and customers are strongly advised to satisfy themselves of the suitability of these
materials for their application prior to purchase.

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Supplier Product Composition Dielectric Constant 1) Dissipation Factor 1) CTE Z
(ppm/K)		 Thermal
Conduct
(W/m/K)		 Comment

Arlon

FoamClad 100

foam/polymer film

1.15-1.35

0.002-0.005

7.5%


Properties are thickness & copper weight dependant

Neltec (ex Metclad)

NY9208(IM)

 

2.08 ± 0.02

0.0006

260

0.272

 

Polyflon

CuFlon

Pure PTFE

2.1

0.00045

129

 

Tested at 18GHz
Sheets to 12" x 18"

Taconic

TLP-5A

PTFE/Woven Fibreglass

2.15 

0.0009

 

 

Low PIM up to 106

Arlon

DiClad 880     also -PIM variant

PTFE/Woven Fibreglass

2.17, 2.20
± 0.02

0.0009

252

0.261

Sheets to 36" x 72"

Arlon

CuClad 217

PTFE/Woven Fibreglass

2.17, 2.20
± 0.02

0.0009

246

0.261

Sheets to 36" x 36"

Arlon

IsoClad 917

PTFE/Non-woven Fibreglass

2.17, 2.20
± 0.04

0.0013

236

0.263

Sheets to 36" x 72"

Neltec (ex Metclad)

NY9217(IM)
(Was MY(IM/ST)-217  and before that MY1)

PTFE/Woven Fibreglass

2.17
± 0.02

0.0008

260

0.272

920mm

Taconic

TLY

PTFE/Woven Fibreglass

2.17  - 2.33
± 0.02

0.0009

290

0.41

 Low PIM up to 106

Taconic

605

PTFE/Woven Fibreglass

2.20

 

 

 

Still available but superseded by TLY-5

Rogers

RT/duroid 5880

PTFE/Non-woven Fibreglass

2.20
± 0.020

0.0009

0.20

Neltec (ex Metclad)

NY9220 (IM)
(Was MY(IM/ST)-220 and before that MY2)

PTFE/Woven Fibreglass

2.20
± 0.02

0.0009

260

0.272

Sheets to 1220mm x 920mm

Polyflon

Polyguide

Polyolefin

2.32

0.0002

108

 

Tested at 1MHz
Sheets to 22.5" x 32"

Rogers

RT/duroid 5870

PTFE/Non-woven Fibreglass

2.33
± 0.020

0.0012

0.22

Arlon

DiClad 870

PTFE/Woven Fibreglass

2.33
± 0.02

0.0013

217

0.257

Tested at X-Band. Sheets to 36" x 72"

Arlon

CuClad 233

PTFE/Woven Fibreglass

2.33
± 0.02

0.0013

194

0.258

Tested at X-Band. Sheets to 36" x 36"

Neltec (ex Metclad)

NY9233 (IM)
(Was MY(IM/ST)-233 and before that MY3)

PTFE/Woven Fibreglass

2.33
± 0.02

0.0011

260

0.272

Sheets to 1220mm x 920mm

Arlon

IsoClad 933

PTFE/Non-woven Fibreglass

2.33 ± 0.04

0.0014

203

0.263

Tested at X-Band.
Sheets to 36" x 72"

Arlon

DiClad 522

PTFE/Woven Fibreglass

2.40 - 2.60 ± 0.05

0.001

173

0.254

Tested at 1MHz. Sheets to 36" x 72"

Arlon

CuClad 250GT

PTFE/Woven Fibreglass

2.40 - 2.60 ± 0.05

0.001

177

0.254

Tested at 1MHz. Sheets to 36" x 36"

Neltec (ex Metclad)

NX9240 (IM)  (Was MX(IM/ST)-240 and before that MX6)

PTFE/Woven Fibreglass

2.40
± 0.04

0.0016

150

0.251

Sheets to 1220mm x 920mm

Rogers

Ultralam 2000

PTFE/Woven Fibreglass

2.40 - 2.60
± 0.04

0.0022 max

Sheets to 18" x 48"

Arlon

DiClad 527

PTFE/Woven Fibreglass

2.40 - 2.60
± 0.04

0.0022

182

0.254

Tested at X-Band. Sheets to 36" x 72"

Arlon

CuClad 250GX

PTFE/Woven Fibreglass

2.40 - 2.60
± 0.04

0.0022

177

0.254

Tested at X-Band. Sheets to 36" x 36"

Neltec (ex Metclad)

NX9245 (IM)
(Was MX(IM/ST)-245 and before that  MX1)

PTFE/Woven Fibreglass

2.45
± 0.04

0.0016

150

0.251

Sheets to 1220mm x 920mm

Taconic

TLX

PTFE/Woven Fibreglass

2.45 - 2.65
± 0.04

0.0019

130-145

0.14

Tested at 10GHz
Dk can be specified in range 2.45 - 2.65
Sheets to 36" x 116"
Low PIM

Taconic

601

PTFE/Woven Fibreglass

2.50

 

    

Still available but superseded by TLX-9

Neltec (ex Metclad)

NY9250(IM)
(Was MX(IM/ST)-250 and before that MX2)

PTFE/Woven Fibreglass

2.50
± 0.04

0.0016

150

0.251

Sheets to 1220mm x 920mm

Arlon

AD 250       also -PIM variant

Commercial Grade PTFE

2.50
± 0.05

0.003

95

0.235

Sheets to 36" x 72"

Taconic

602

PTFE/Woven Fibreglass

2.20

      

Still available but superseded by TLX-8

Polyflon

NorCLAD

Thermoplastic
(PPO)

2.55

0.0011

53

  

Tested at 3GHz. Sheets to 20" x 22"

Neltec (ex Metclad)

NY9255(IM)
(Was MX(IM/ST)-255 and before that MX3)

PTFE/Woven Fibreglass

2.55
± 0.04

0.0018

150

0.251

Sheets to 1220mm x 920mm

Neltec (ex Metclad)

NY9260(IM)
(Was MX(IM/ST)-260 and before that MX4)

PTFE/Woven Fibreglass

2.60
± 0.04

0.0020

150

0.251

Sheets to 1220mm x 920mm

Sheldahl

ComClad HF

Noryl Plastic

2.60

0.0025
- 0.0040

59

0.18 - 0.20

Sheets to 18" x 24"
Tested at 1 and 12 GHz

Gore

Microlam 630

BT resin in a continuous toughening matrix

2.60

0.0036

56

    

Arlon

AD 270

Commercial Grade PTFE

2.70
± 0.05

0.003

95

0.235

Sheets to 36" x 72"

Taconic

TLC-27

PTFE/Woven Fibreglass

2.75
± 0.05

0.003

70

0.24

Isola IS680   2.80-3.45 +/- 3.45 0.0020-0.0032      

Gore

Microlam 610

  

2.86

0.016

60

  

Tested at 2.9GHz

Also 610XT and XTF

Rogers

RT/duroid
6002

PTFE/Ceramic

2.94
± 0.04

0.0012

24

0.60

Standard sheet 18" x 24"

Rogers

RT/duroid
6202

PTFE/Ceramic

2.94
± 0.04

0.0015

0.68

Arlon

CLTE and CLTE-LC

Ceramic Filled PTFE/Woven Fibreglass

2.94
Nominal

0.0025

38

0.50

Sheets to 36" x 72"

Neltec (ex Metclad)

NX9294
(Was MX(IM)-294 and before that MX8)

PTFE/Woven Fibreglass

2.94
± 0.04

0.0022

150

0.251

Sheets to 1220mm x 920mm

Neltec (ex Metclad)

NH9294 (Was MCX-294)

PTFE/Woven Fibreglass/Ceramic

2.94
± 0.04

0.0025

71

0.230

Sheets to 1220mm x 920mm

Taconic

TLE-95

PTFE/Woven Fibreglass

2.95
± 0.05

0.0019

70

0.20

 Mechanically stable

Arlon

AD 295

Commercial Grade PTFE

2.95
± 0.05

0.003

95

0.235

Sheets to 36" x 72"

Rogers

RO3003

PTFE/Ceramic

3.0
± 0.04

0.0013

24

0.50

Standard sheet 18" x 24"

Taconic

RF-30

PTFE/Ceramic/Glass

3.0
± 0.1

0.0014

125

0.2

Tested at 1.9GHz
0.030" and 0.060" thickness
Low PIM

Taconic

TSM-30

PTFE/Ceramic/Glass

3.0
± 0.05

0.0015

78

0.27

Tested at 10GHz   Sheets to 36" x 48"  Thicknesses in increments of 0.005"
Temp stable material

Neltec (ex Metclad)

NH9300 (Was MHST-300)

PTFE/Woven Fibreglass/Ceramic

3.00
± 0.04

0.0023

71

0.230

Sheets to 1220mm x 920mm

Neltec (ex Metclad)

NX9300(IM)
(Was MX(IM/ST)-300 and before that MX7)

PTFE/Woven Fibreglass

3.00
± 0.04

0.0023

150

0.252

Sheets to 1220mm x 920mm
Arlon CTLE-XT Ceramic/PTFE 3.00 +/-0.04 0.0013   0.64  

Arlon

AD 300

also -PIM variant

Commercial Grade PTFE

3.00
± 0.05

0.003

95

0.235

Sheets to 36" x 72"

Neltec 

N9300-13 RF

Epoxy thermoset/PTFE

3.00

0.004

67

  

0.020"/0.030"/0.060"

Rogers

RO3203

PTFE/Woven Fibreglass Ceramic filled

3.02
± 0.04

0.0016

58

0.47

Sheets to 24" x 18"

Polyflon

Copper-Clad
ULTEM

Thermoplastic
(PEI)

3.05

0.006

56

Tested at 3GHz

GIL

GML1000

           Discontinued

GIL

GML2032

 

         Discontinued

GIL

GML1032

           Discontinued

Rogers

RO4232

3.2
± 0.05

0.0018

46

Preliminary data - sheets to 1220mm x 3058mm

Neltec (ex Metclad)

NH9320 (Was MHST-320)

PTFE/Woven Fibreglass/
Ceramic

3.20
± 0.04

0.0024

71

0.230

Sheets to 1220mm x 920mm

Neltec (ex Metclad)

NX9320(IM)
(Was MX(IM/ST)-320 and before that MX9)

PTFE/Woven Fibreglass

3.20
± 0.04

0.0025

71

0.230

Sheets to 1220mm x 920mm

Taconic

TLC

PTFE/Woven Fibreglass

3.20
± 0.05

0.003

70

  

Standard sheet 36" x 48"; up to 120"
Other Dk available upon request

Arlon

AD 320 also -PIM variant

Commercial Grade PTFE

3.20
± 0.05

0.003

95

0.235

Sheets to 36" x 72"

Arlon

AR 320

Commercial Grade PTFE

3.20
± 0.05

0.003

71

0.230

Sheets to 36" x 72"

Neltec 

N9320-13 RF

Epoxy thermoset/PTFE

3.20

0.0045

67

  

0.020"/0.030"/0.060"

Rogers

TMM 3

Thermoset Resin / Ceramic

3.27
± 0.0032

0.002

23

0.70

Standard sheet 18" x 24"

Arlon

25N

Thermoset Resin with Ceramic filler

3.28

0.0024

60

0.446

Sheets to 36" x 48"
Rogers RO4500 Ceramic-filled, glass-reinforced 3.30-3.50 0.002-0.0032   0.60  

Krempel

Akaflex PCL

Polyester flexible

3.3

0.0052

    

Tested at 1KHz

Neltec (ex Metclad)

NH9388 (Was MHST-338)

PTFE/Woven Fibreglass/Ceramic

3.38
± 0.04

0.003

71

0.230

Sheets to 1220mm x 920mm

Rogers

RO4003C

Glass reinforced / hydrocarbon / ceramic (Non PTFE)

3.38
± 0.05

0.0027

46

0.64

Isola

IS640

  

3.38
± 0.05

0.0045 

31

0.32

Df 0.0034 at 2GHz

Dk3.2 and 3.45 also

Neltec 

N9338-13 RF

Epoxy thermoset/PTFE

3.38

0.0046

67

  

0.020"/0.030"/0.060"
Taconic RF-34 Organic/Ceramic 3.40 0.0034 110 0.23  

Gore

Microlam 410

  

3.4

0.008

19

0.46-0.58

  

Nelco

N4000-13  SI

Epoxy/glass fabric

3.4

0.010

3.5%

0.294

  

Krempel

Akaflex KCL

Polyimide flexible

3.4

0.0018

    

Tested at 1KHz

Arlon

25FR

Thermoset Resin with Ceramic filler

3.43
± 0.08

0.0035

60

0.446

Sheets to 36" x 48"

Neltec (ex Metclad)

NH9348 (Was MHST-348 and before that MX12)

PTFE/Woven Fibreglass/Ceramic

3.48
± 0.04

0.0030

71

0.230

Sheets to 1220mm x 920mm

Rogers

RO4350B

Glass reinforced/
hydrocarbon/
ceramic (Non PTFE)

3.48
± 0.05

0.0037

50

0.62

Sheets to 48" x 36"

Rogers

RO3035

PTFE/Woven Fibreglass Ceramic filled

3.50
± 0.05

0.0017

24

0.50

  

Taconic

RF-35

PTFE/Ceramic loaded/Woven Fibreglass

3.50

0.0018

64

0.24

Tested at 1.9GHz
Also RF-35A and -35P

Arlon

AR 350

PTFE/Non woven Fibreglass/Ceramic

3.5 Nominal
± 0.3

0.0026

107

0.310

Sheets to 36" x 72"

Arlon

AD 350

AD350A

PTFE/Non woven Fibreglass/Ceramic

3.5 ± 0.12

3.5 ± 0.08

0.0026

0.003

107

35

0.235

0.45

Sheets to 36" x 72"

Dupont

Type 100 HN Film

Kapton

3.5

0.0026

20

0.12

Tested at 1KHz
Neltec  N9350-13 RF Epoxy thermoset/PTFE 3.50 0.0055 67   0.020"/0.030"/0.060"
Nelco N4000-13 Epoxy/glass fabric 3.5

0.012

 3.5% 0.294  

GIL

MC3D

           Discontinued

Neltec (ex Metclad)

NH9350 (Was MHST-350)

PTFE/Woven Fibreglass/Ceramic

3.50
± 0.04

0.0030

71

0.230

Sheets to 1220mm x 920mm

Isola

Gigaver 210

          Discontinued

Arlon

AD 360

Commercial Grade PTFE

3.60
± 0.05

0.003

95

0.235

Sheets to 36" x 72"
Hitachi MCL-LX-67F   3.6-3.75 0.003-0.0035 12-17   Tested at 1 GHz

GE

GETEK ML200/RG200

Epoxy and polyphenylene oxide resins

3.6 - 4.2

0.01 - 0.015

3.8%

Tested at 1 MHz

Isola

Gigaver 410

          Discontinued

Rogers

TMM 4

Thermoset Resin / Ceramic

4.5
± 0.045

0.002

21

0.70

Arlon

AR 450

Ceramic Filled PTFE

4.5
Nominal

0.0026

102

0.320

Sheets to 36" x 72"
Various FR-4 / FR-5 Epoxy/glass fabric 4.5  - 4.9 0.013 - 0.020 110 - 160   Typical values at 1 MHz based on Isola's Duraver-E-Cu grade 104 Dk at 10 GHz in range  3.7 - 4.1.  Loss factor is constant with frequency

Rogers

TMM 6

Thermoset Resin / Ceramic

6.00
± 0.080

0.0023

26

0.72

Standard sheet 18" x 24"

Arlon

AR 600

Ceramic Filled PTFE

6.0
Nominal

0.0035

62

0.431

Sheets to 36" x 72"

Rogers

RT/duroid 6006

PTFE/Ceramic

6.15
± 0.150

0.0027

0.48

 Panels to 20" x 20"

Rogers

RO3006

PTFE/Ceramic

6.15
± 0.15

0.0020

24

0.61

Standard sheet 18" x 24"

Rogers

RO3206

PTFE/Woven Fibreglass Ceramic filled

6.15
± 0.25

0.0027

45

0.63

Sheets to 24" x 18"
Taconic RF-60 Organic-Ceramic 6.15
± 0.25		 0.0028 75 0.43  

Rogers

TMM 10

Thermoset Resin / Ceramic

9.20
± 0.230

0.0022

20

0.76

Standard sheet 18" x 24"

Rogers

TMM 10i

Thermoset Resin / Ceramic

9.80
± 0.245

0.002

20

0.76

Panels to 20" x 20"

Arlon

AR 1000

Ceramic Filled PTFE

10.0
Nominal

0.0035

37

0.645

Sheets to 36" x 72"

Taconic

CER-10

PTFE/Ceramic loaded Woven Fibreglass

10
Nominal

0.0035

46

0.29

Sheets to 36" x 72"

Rogers

RT/duroid 6010/6010LM

PTFE/Ceramic

10.2
± 0.250

0.0023

24

0.78

  

Rogers

RO3210

PTFE/Woven Fibreglass Ceramic

10.2
± 0.5

0.0027

34

0.81

Sheets to 24" x 72"

Rogers

RO3010

PTFE/Ceramic

10.2
± 0.30

0.0023

24

0.66

Standard sheet 18" x 24"

Notes:
1) Measurements made at 10GHz unless otherwise stated.

If you have any comments, suggestions, or new materials that you would like added, please email us.

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