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MEGTRON-7

What is MEGTRON-7?

A series of advanced multi-layer circuit board materials manufactured by Panasonic. It’s specifically designed for high-speed and high-frequency applications.
Panasonic

Characteristics

  • High Reliability
  • Ultra-low Dk and Df
  • Highly Heat Resistant

Applications

  • Antenna
  • Aerospace
  • Supercomputer
  • Measuring Instrument
  • ICT Infrastructure Equipment

MEGTRON-7 Series Part Number

There might be some differences in UL certification conditions between the existing part numbers and the new part numbers.

MEGTRON 7 New Part Number Existing Part Number
Laminate Prepreg Laminate Prepreg
Low Dk Glass Cloth R-578Y(N) R-568Y(N) R-5785(N) R-5680(N)
Low Dk Glass Cloth
Improved Processability
R-578Y(GN) R-568Y(GN) R-5785(GN) R-5680(GN)
Normal Glass Cloth
Improved Processability
R-578Y(GE) R-568Y(GE) R-5785(GE) R-5680(GE)
Buried Resistor Copper Foil R-578Y(R) - R-578Y(R) -

MEGTRON-7 General Properties

Item Test method Condition Unit MEGTRON 7
R-578Y(N) R-5785(N)
MEGTRON 7
R-578Y(GN) R-5785(GN)
MEGTRON 7
R-578Y(GE) R-5785(GE)
Low Dk Glass Cloth Low Dk Glass Cloth 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
α2 280 280 280
T288 (with copper) IPC-TM-650 2.4.24.1 A min >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) 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

Remark

  1. Peel Strength*: R-578Y(GN), R-5785(GN), R-578Y(GE), R-5785(GE): H-VLP2 Copper; R-578Y(N), R-5785(N): H-VLP Copper
  2. Sample thickness :29.5 mil = 0.750 mm (Core Type 30)
  3. The data in the above table are not guaranteed values.
  4. To receive more detailed information, please feel free to contact us directly or leave your email address and we will promptly send you the relevant documents.

R-5785(N) & R-578Y(N) Specification

Properties Units Test Method Condition Typical Value
R-5785(N)
Low-Dk Glass
R-578Y(N)
Low-Dk Glass
Thermal Properties
Glass Transition Temp (Tg) DSC As received 200 200
DMA 210 210
Thermal Decomposition Temp (Td) TGA 400 400
Time to Delam (T288) Without Cu min IPC TM-650 2.4.24.1 >120 >120
With Cu >120 >120
CTE: α1 X-axis ppm/℃ IPC TM-650 2.4.24 <Tg 14-16 14-16
Y-axis 14-16 14-16
Z-axis 42 42
CTE: α2 Z-axis >Tg 280 280
Electrical Properties
Volume Resistivity MΩ-cm IPC TM-650 2.5.17.1 C-96/35/90 1×10⁹ 1×10⁹
Surface Resistivity MΩ 1×10⁸ 1×10⁸
Dielectric Constant (Dk) @ 1GHz - IPC TM-650 2.5.5.9 C-24/23/50 3.37 3.37
@ 14GHz Balanced-type Circular Disk Resonator 3.31 3.31
Dissipation Factor (Df) @ 1GHz IPC TM-650 2.5.5.9 0.001 0.001
@ 14GHz Balanced-type Circular Disk Resonator 0.0023 0.0023
Physical Properties
Water Absorption % IPC TM-650 2.6.2.1 D-24/23 0.06 0.06
Peel Strength 1 oz (H-VLP) kN/m IPC TM-650 2.4.8 As Received 0.8 0.8
Flammability - UL 94V C-48/23/50 94V-0* 94V-0

Remark

  1. 94V-0*: The value represents Panasonic internal test results based on the UL 94 test method for flammability and is NOT intended to indicate that the product is UL certified. If UL certification is required, use R-578Y(N) for the UL recognized grades.
  2. Sample thickness: 0.750 mm
  3. The data in the above table are not guaranteed values.
  4. To receive more detailed information, please feel free to contact us directly or leave your email address and we will promptly send you the relevant documents.

R-578Y(GE) & R-578Y(GN) Specification

Properties Units Test Method Condition Typical Value
R-578Y(GE)
E Glass
R-578Y(GN)
Low-Dk Glass
Thermal Properties
Glass Transition Temp (Tg) DSC As received 200 200
TMA 190 190
DMA 210 210
Thermal Decomposition Temp (Td) TGA 400 400
Time to Delam (T288) Without Cu min IPC TM-650 2.4.24.1 >120 >120
With Cu >120 >120
CTE: α1 X-axis ppm/℃ IPC TM-650 2.4.24 <Tg 14-16 14-16
Y-axis 14-16 14-16
Z-axis 42 42
CTE: α2 Z-axis >Tg 280 280
Electrical Properties
Volume Resistivity MΩ-cm IPC TM-650 2.5.17.1 C-96/35/90 1×10⁹ 1×10⁹
Surface Resistivity MΩ 1×10⁸ 1×10⁸
Dielectric Constant (Dk) @ 1GHz - IPC TM-650 2.5.5.9 C-24/23/50 3.63 3.37
@ 13, 14GHz Balanced-type Circular Disk Resonator 3.60 @13GHz 3.31 @14GHz
Dissipation Factor (Df) @ 1GHz IPC TM-650 2.5.5.9 0.002 0.001
@ 13, 14GHz Balanced-type Circular Disk Resonator 0.0034 @13GHz 0.0023 @14GHz
Physical Properties
Water Absorption % IPC TM-650 2.6.2.1 D-24/23 0.06 0.06
Peel Strength 1 oz (H-VLP2) kN/m IPC TM-650 2.4.8 As Received 0.8 0.8
Flammability - UL 94V C-48/23/50 94V-0 94V-0

Remark

  1. Sample thickness: 0.750 mm
  2. The data in the above table are not guaranteed values.
  3. To receive more detailed information, please feel free to contact us directly or leave your email address and we will promptly send you the relevant documents.

R-5785(GE) & R-5785(GN) Specification

Properties Units Test Method Condition Typical Value
R-5785(GE)
E Glass
R-5785(GN)
Low-Dk Glass
Thermal Properties
Glass Transition Temp (Tg) DSC As received 200 200
TMA 190 190
DMA 210 210
Thermal Decomposition Temp (Td) TGA 400 400
Time to Delam (T288) Without Cu min IPC TM-650 2.4.24.1 >120 >120
With Cu >120 >120
CTE: α1 X-axis ppm/℃ IPC TM-650 2.4.24 <Tg 14-16 14-16
Y-axis 14-16 14-16
Z-axis 42 42
CTE: α2 Z-axis >Tg 280 280
Electrical Properties
Volume Resistivity MΩ-cm IPC TM-650 2.5.17.1 C-96/35/90 1×10⁹ 1×10⁹
Surface Resistivity MΩ 1×10⁸ 1×10⁸
Dielectric Constant (Dk) @ 1GHz - IPC TM-650 2.5.5.9 C-24/23/50 3.63 3.37
@ 12GHz Balanced-type Circular Disk Resonator 3.61 3.35
Dissipation Factor (Df) @ 1GHz IPC TM-650 2.5.5.9 0.002 0.001
@ 12GHz Balanced-type Circular Disk Resonator 0.003 0.002
Physical Properties
Water Absorption % IPC TM-650 2.6.2.1 D-24/23 0.06 0.06
Peel Strength 1 oz (H-VLP2) kN/m IPC TM-650 2.4.8 As Received 0.8 0.8
Flammability - UL C-48/23/50 94V-0 94V-0

Remark

  1. Sample thickness: 0.750 mm
  2. The data in the above table are not guaranteed values.
  3. To receive more detailed information, please feel free to contact us directly or leave your email address and we will promptly send you the relevant documents.

MEGTRON 7 General Information

Material Storage

  • Laminate should be stored flat in a cool dry environment. Avoid bending or scratching the laminate surface.
  • When possible store the laminate in the original container.
  • Prepreg should be stored flat in a cool dry controlled environment, 73℉ (23℃) or less and 50% RH or less.
  • Extended storage of prepreg should be at a reduced temperature of 41 ℉(5 ℃). Open bags of prepreg must be resealed.
    Prepreg should not be exposed to open environments for more than 8 hours total cumulatively under the above conditions or as agreed upon between user and supplier.

Laminate Surface Preparation

  • Regular Shiny Copper can be cleaned using industry standard chemical clean or mechanical clean.
  • Reverse Treat Copper should be cleaned using industry standard chemical clean.

Inner Layer Bond Treatment

  • Alternative Oxide Treatment with organic coating using a Peroxide/Sulfuric etch technology is preferred.
  • In the case of using Black Oxide, please check whether peel strength is acceptable for the usage.

Drying

  • Dry finished inner layers completely to remove any absorbed moisture or surface moisture.
  • A racked bake at 225 ℉(105 ℃) for 20-30 minutes is preferred. For conveyorized alternative oxide processing, some equipment may have sufficient drying capability. However, a racked bake is suggested.
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