- Excellent low-Dk/Df with low CTE property for the evolution of device.
- Stable signal values at high frequency and high temperature and humidity.
Circuit Board Materials
- Part Number
Low Dk glass cloth
Laminate R-G545L
Prepreg R-G540L
Normal glass cloth
Laminate R-G545E
Prepreg R-G540E
- Application
- Detailed use
・PKG
IC PKG for base station application, Module part, etc.
New branding announcement
- Panasonic Electronic Materials Division launches LEXCM brand Semiconductor Device Materials.
The LEXCM brand now comprises all of the Semiconductor Device Materials; IC packaging materials (which includes substrates, encapsulants and underfills) and electronic assembly materials.
Additionally, the IC substrate materials' brand is transitioning from MEGTRON GX to LEXCM GX.
Properties
Dk 3.5 Df 0.003
@12GHz
@12GHz
CTE x,y-axis 10ppm/°C
CTE z-axis 22ppm/°C
CTE z-axis 22ppm/°C
Tg (DMA)
230°C
230°C
Df at Wide-frequency band
Frequency dependence by Transmission loss
TMAxy
TMAz
General properties
| Item | Test method | Condition | Unit | LEXCM GX R-G545L Low Dk glass cloth |
LEXCM GX R-G545E Normal glass cloth |
|
|---|---|---|---|---|---|---|
| Glass transition temp.(Tg) | DMA* | A | °C | 230 | 230 | |
| CTE x, y-axis | α1 | Internal method | A | ppm/°C | 10 | 10 |
| CTE z-axis | IPC-TM-650 2.4.24 | 22 | 22 | |||
| Dielectric constant(Dk) | 12GHz | Balanced type circular disk resonator | A | － | 3.5 | 4.0 |
| Dissipation factor(Df) | 0.003 | 0.004 | ||||
| Water absorption | IPC-TM-650 2.6.2.1 | D-24/23 | % | 0.06 | 0.06 | |
The sample thickness is 0.1mm
* Measurement in tensile mode
Our Halogen-free materials are based on JPCA-ES-01-2003 standard and others.
Contain; Chlorine:≤0.09wt%(900ppm), Bromine:≤0.09wt%(900ppm),
Chlorine+Bromine:≤0.15wt%(1500ppm)
The above data are typical values and not guaranteed values.
