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.
Material Overview
- Manufacturer: Panasonic Industry
- Product Series: MEGTRON7
- Laminate Series: R-5785
- Prepreg Series: R-5680
- Multilayer PCB Material System
- Available in Multiple Material Grades
PCB-Relevant Characteristics
- Ultra-Low Transmission Loss
- Low Dk and Df Options
- High Heat Resistance
- Suitable for High-Speed Signal Designs
- Compatible with High-Layer-Count PCBs
- Supports HDI PCB Structures
Application Areas
- ICT Infrastructure Equipment
- Servers & High-Performance Computing
- Networking Equipment
- Base-Station & Antenna Systems
- Measuring Instruments
- Advanced High-Speed Electronics
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 |
Remarks
- For the peel-strength reference above, R-578Y(GN), R-5785(GN), R-578Y(GE), and R-5785(GE) use H-VLP2 copper, while R-578Y(N) and R-5785(N) use H-VLP copper.
- The reference sample thickness is 29.5 mil (0.750 mm). The listed values are typical material data and may vary with grade, construction, copper type, and test conditions.
- MEGTRON7 materials are manufactured by Panasonic Industry. For current material specifications, available constructions, and technical documentation, refer to the material manufacturer or its authorized channels.
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 Temperature (Tg) | °C | DSC | As Received | 200 | 200 | |
| DMA | 210 | 210 | ||||
| Thermal Decomposition Temperature (Td) | °C | TGA | 400 | 400 | ||
| Time to Delamination (T288) | Without Cu | min | IPC-TM-650 2.4.24.1 | >120 | >120 | |
| With Cu | >120 | >120 | ||||
| CTE: α1 | X-Axis | ppm/°C | IPC-TM-650 2.4.24 | | 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) | @ 1 GHz | — | IPC-TM-650 2.5.5.9 | C-24/23/50 | 3.37 | 3.37 |
| @ 14 GHz | Balanced-Type Circular Disk Resonator | 3.31 | 3.31 | |||
| Dissipation Factor (Df) | @ 1 GHz | IPC-TM-650 2.5.5.9 | 0.001 | 0.001 | ||
| @ 14 GHz | 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 | Rating | UL 94 | C-48/23/50 | 94V-0* | 94V-0 | |
Remarks
- The 94V-0 value shown in the table is a material flammability reference. UL recognition should be verified for the specific MEGTRON7 grade and construction required for the PCB project.
- Reference sample thickness: 0.750 mm. The listed values are typical material data and may vary with grade, construction, and test conditions.
- MEGTRON7 materials are manufactured by Panasonic Industry. For current specifications, UL recognition status, and technical documentation, refer to Panasonic Industry and the applicable UL records.
R-578Y(GE) & R-578Y(GN) Specification
| Properties | Units | Test Method | Condition | Typical Value | ||
|---|---|---|---|---|---|---|
|
R-578Y(GE) Normal Glass |
R-578Y(GN) Low-Dk Glass |
|||||
| Thermal Properties | ||||||
| Glass Transition Temperature (Tg) | °C | DSC | As Received | 200 | 200 | |
| TMA | 190 | 190 | ||||
| DMA | 210 | 210 | ||||
| Thermal Decomposition Temperature (Td) | °C | TGA | 400 | 400 | ||
| Time to Delamination (T288) | Without Cu | min | IPC-TM-650 2.4.24.1 | >120 | >120 | |
| With Cu | >120 | >120 | ||||
| CTE: α1 | X-Axis | ppm/°C | IPC-TM-650 2.4.24 | | 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) | @ 1 GHz | — | IPC-TM-650 2.5.5.9 | C-24/23/50 | 3.63 | 3.37 |
| @ 13 / 14 GHz | Balanced-Type Circular Disk Resonator | 3.60 @ 13 GHz | 3.31 @ 14 GHz | |||
| Dissipation Factor (Df) | @ 1 GHz | IPC-TM-650 2.5.5.9 | 0.002 | 0.001 | ||
| @ 13 / 14 GHz | Balanced-Type Circular Disk Resonator | 0.0034 @ 13 GHz | 0.0023 @ 14 GHz | |||
| 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 | Rating | UL 94 | C-48/23/50 | 94V-0 | 94V-0 | |
Remark
- Sample thickness: 0.750 mm
- The data in the above table are not guaranteed values.
- 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) Normal Glass |
R-5785(GN) Low-Dk Glass |
|||||
| Thermal Properties | ||||||
| Glass Transition Temperature (Tg) | °C | DSC | As Received | 200 | 200 | |
| TMA | 190 | 190 | ||||
| DMA | 210 | 210 | ||||
| Thermal Decomposition Temperature (Td) | °C | TGA | 400 | 400 | ||
| Time to Delamination (T288) | Without Cu | min | IPC-TM-650 2.4.24.1 | >120 | >120 | |
| With Cu | >120 | >120 | ||||
| CTE: α1 | X-Axis | ppm/°C | IPC-TM-650 2.4.24 | | 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) | @ 1 GHz | — | IPC-TM-650 2.5.5.9 | C-24/23/50 | 3.63 | 3.37 |
| @ 12 GHz | Balanced-Type Circular Disk Resonator | 3.61 | 3.35 | |||
| Dissipation Factor (Df) | @ 1 GHz | IPC-TM-650 2.5.5.9 | 0.002 | 0.001 | ||
| @ 12 GHz | 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 | Rating | UL | C-48/23/50 | 94V-0 | 94V-0 | |
Remark
- Sample thickness: 0.750 mm
- The data in the above table are not guaranteed values.
- 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.
What to Prepare for a MEGTRON7 PCB Quote
A clear manufacturing package helps reduce back-and-forth when requesting a MEGTRON7 PCB quotation. If your design uses an R-5785 / R-5680 series material, include the exact material grade and the key PCB requirements together with your fabrication files.
- Material grade: Identify the required MEGTRON7 laminate and prepreg grade in the drawing or stack-up.
- PCB stack-up: Provide layer count, dielectric structure, copper weights, and finished board thickness.
- Impedance requirements: Mark controlled-impedance traces and include target values and tolerances where applicable.
- Via structure: Specify through holes, blind vias, buried vias, microvias, or sequential build requirements.
- Fabrication details: Include board dimensions, surface finish, solder mask, copper thickness, and special notes.
- Assembly files: For PCBA projects, provide the BOM, pick-and-place data, assembly drawings, and component requirements.
- Order information: Include prototype or production quantity, delivery expectations, and any inspection or testing requirements.
Highleap Electronics provides MEGTRON7 PCB manufacturing and PCB assembly services based on the released fabrication and assembly documentation. Complete project data allows our engineering team to review manufacturability and prepare a more accurate quotation.