Introduction to Rogers RO4830
The Rogers RO4830 is a high-frequency laminate that has been
specifically engineered to address the challenges faced in
price-sensitive applications, particularly within the 76-81 GHz
frequency range, commonly associated with automotive radar sensors.
With a dielectric constant of 3.2 at 77 GHz, it delivers superior
performance compared to conventional PTFE-woven glass laminates.
The use of LoPro reverse treated copper foil cladding contributes
to an impressive insertion loss of just 2.2 dB per inch at 77 GHz,
making it an ideal choice for demanding RF applications.
Key Features
The Rogers RO4830 offers several distinctive features that set it
apart from other materials:
Dielectric Constant (Dk): With a value of 3.24 at 77 GHz, the
RO4830 ensures stable electrical performance across a range of
frequencies.
Dissipation Factor: A low dissipation factor of 0.0033 at 10 GHz
minimizes signal loss, enhancing overall circuit efficiency.
Thermal Stability: The material exhibits a thermal coefficient of
dielectric constant of -30 ppm/°C, ensuring consistent performance
under varying temperature conditions.
Flame Retardant Rating: The UL 94 V-0 rating indicates excellent
flame resistance, contributing to safety in various applications.
Optimized Material Composition: An advanced composite system of
filler, resin, and glass enhances the PCB's electrical and
mechanical properties.
Benefits of the Rogers RO4830 PCB
The Rogers RO4830 PCB is designed to offer a range of benefits that
appeal to manufacturers and designers alike:
Cost Efficiency: Compared to PTFE laminate options, the RO4830
significantly reduces overall manufacturing costs, making it an
attractive choice for budget-conscious projects.
Oxidation Resistance: The materials used in the RO4830 are highly
resistant to oxidation, ensuring longevity and reliability in
various environmental conditions.
Enhanced Drilling Performance: The PCB supports good laser drilling
performance, allowing for precise manufacturing and consistent
results across the sheet.
Seamless Integration: The RO4830 can be fabricated using standard
FR-4 processes, making it suitable for multi-layer board designs
that often include FR-4 layers.
PCB Construction and Specifications
This 2-Layer Rigid PCB features a well-defined construction that
follows industry standards:
Stackup: The stackup consists of two layers: 35 μm of copper,
followed by a 0.24 mm (9.4 mil) core of Rogers RO4830 material, and
another 35 μm layer of copper.
Board Dimensions: The PCB measures 50.1 mm x 78.3 mm, with a
tolerance of ±0.15 mm, allowing for precise integration in various
applications.
Minimum Trace/Space: Specifications include a minimum trace and
space of 5/7 mils, ensuring high-density designs without
compromising performance.
Finished Thickness: The finished board thickness is 0.4 mm, with an
outer copper weight of 1 oz (1.4 mils).
Surface Finish: An immersion silver surface finish is applied,
providing excellent conductivity and protection against
environmental factors.
Quality Assurance
To maintain high reliability, each PCB adheres to IPC-Class-2
quality standards. Each board undergoes 100% electrical testing
before shipment, ensuring that only fully functional products reach
customers. This commitment to quality not only minimizes the risk
of field failures but also enhances customer satisfaction.
Typical Applications
76-81 GHz Automotive Radar Sensors: The PCB is ideally suited for
modern automotive applications, providing critical performance in
radar sensing technology.
This Rogers RO4830 2-Layer Rigid PCB is positioned as a reliable,
high-performance solution tailored to meet the demands of advanced
electronic applications.
