Ultra-low transmission loss Highly heat resistant Multi-layer circuit board materials MEGTRON7

Due to our industry leading low dielectric constant and dissipation factor, these materials are suitable for high-speed data transmission by servers and routers using high-layercount, large-size PCB designs.

Circuit Board Materials

Part Number

Application
Detailed use

・Network
・Wireless
・Aerospace

New part number

Low Dk glass cloth

Laminate R-578Y(N)

Prepreg R-568Y(N)

Low Dk glass cloth
Improved processability

Laminate R-578Y(GN)

Prepreg R-568Y(GN)

Normal glass cloth
Improved processability

Laminate R-578Y(GE)

Prepreg R-568Y(GE)

Buried Resistor Copper Foil

Laminate R-578Y(R)

Existing part number

Low Dk glass cloth

Laminate R-5785(N)

Prepreg R-5680(N)

Low Dk glass cloth
Improved processability

Laminate R-5785(GN)

Prepreg R-5680(GN)

Normal glass cloth
Improved processability

Laminate R-5785(GE)

Prepreg R-5680(GE)

Buried Resistor Copper Foil

Laminate R-5785(R)

There might be some differences in UL certification conditions between the existing part numbers and the new part numbers. Please contact a sales representative in charge or this form for the detail.

Any letters with parentheses ( ) at the end of a part number are for identification code in our company and are not included in the part numbers registered for UL certification.
suffix

Properties

Dk 3.31 Df 0.0023
@14GHz

Tg(DSC)
200°C

T288(with copper)
>120min

Video

Transmission loss performance Ranking in MEGTRON series

Frequency dependence by Transmission loss

Heat resistance of High Multi-layered

Buried Resistor Copper Foil specification

General properties

Item		Test method	Condition	Unit	MEGTRON7 R-578Y(N) R-5785(N) Low Dk glass cloth	MEGTRON7 R-578Y(GN) R-5785(GN) Low Dk glass cloth	MEGTRON7 R-578Y(GE) R-5785(GE) Normal glass cloth
Glass transition temp.(Tg)		DSC	A	°C	200	200	200
CTE z-axis	α1	IPC-TM-650 2.4.24	A	ppm/°C	42	42	42
CTE z-axis	α2	IPC-TM-650 2.4.24	A	ppm/°C	280	280	280
T288(with copper)		IPC-TM-650 2.4.24.1	A	分	>120	>120	>120
Dielectric constant(Dk)	13GHz 14GHz	Balanced-type circular disk resonator	C-24/23/50	－	3.31 [14GHz]	3.31 [14GHz]	3.60 [13GHz]
Dissipation factor(Df)	13GHz 14GHz	Balanced-type circular disk resonator	C-24/23/50	－	0.0023 [14GHz]	0.0023 [14GHz]	0.0034 [13GHz]
Peel strength*	1oz(35μm)	IPC-TM-650 2.4.8	A	kN/m	0.8	0.8	0.8

The sample thickness is 0.75mm.
* R-578Y(GN), R-5785(GN), R-578Y(GE), R-5785(GE): H-VLP2 Copper, R-578Y(N), R-5785(N): H-VLP Copper

The above data are typical values and not guaranteed values.