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Item

Test method

Condition

Unit

MEGTRON6
R-5775(N)
Low Dk glass cloth

MEGTRON6
R-5775
Normal glass cloth

Glass transition temp.(Tg)

DSC

A

°C

185

185

Thermal decomposition temp.(Td)

TGA

A

°C

410

410

CTE x-axis

α1

IPC-TM-650 2.4.24

A

ppm/°C

14-16

14-16

CTE y-axis

14-16

14-16

CTE z-axis

α1

IPC-TM-650 2.4.24

A

45

45

α2

260

260

T288(with copper)

IPC-TM-650 2.4.24.1

A

min

>120

>120

Dielectric constant(Dk)

12GHz

Balanced-type
circular disk resonator

C-24/23/50

－

3.4

3.6

Dissipation factor(Df)

0.004

0.004

Water absorption

IPC-TM-650 2.6.2.1

D-24/23

%

0.14

0.14

Flexural modulus

Fill

JIS C 6481

A

GPa

18

19

Peel strength^*

1oz(35μm)

IPC-TM-650 2.4.8

A

kN/m

0.8

0.8