Hybrid PCB with 4mil RO4835 and Isola 370HR Laminates 6-layer Hybrid Circuit Board
Introduction
The Hybrid PCB featuring RO4835 and 370HR laminates represents a pinnacle of innovation and reliability in printed circuit board technology. Blending the superior characteristics of Rogers 4835 and 370HR materials, this hybrid circuit board offers exceptional performance and durability for a wide range of applications.
RO4835 and 370HR Laminates
RO4835 Laminate:
Rogers RO4835 laminate, known for its stability at high temperatures and resistance to oxidation, is a low-loss material designed for high-frequency applications. With properties akin to RO4350B laminates, it enables cost-effective circuit fabrication with standard epoxy/glass processes. Featuring a dielectric constant of 3.48, a dissipation factor of 0.0037 at 10 GHz, and a high Glass Transition Temperature (Tg) exceeding 280°C, RO4835 is ideal for applications demanding high performance.
370HR Laminate:
Isola 370HR laminate utilizes a patented high-performance FR-4 epoxy resin system, ensuring maximum thermal performance and reliability in multilayer Printed Wiring Board applications. With a dielectric constant of 3.92 at 10 GHz, excellent CAF resistance, and a Glass Transition Temperature (Tg) of 180°C, 370HR offers superior thermal stability and mechanical resistance, making it an ideal choice for demanding environments.
PCB Stackup
This 6-layer hybrid PCB features a sophisticated stackup design:
|
Layer
|
Material
|
Thickness (mil)
|
Thickness (mm)
|
|
Top Copper Layer
|
Copper
|
35
|
N/A
|
|
Layer 1
|
RO4835 Dielectric
|
4
|
0.102
|
|
Layer 2
|
Copper
|
35
|
N/A
|
|
Layer 3
|
370HR Dielectric
|
5.67
|
0.144
|
|
Layer 4
|
370HR Core
|
28
|
0.711
|
|
Layer 5
|
Copper
|
35
|
N/A
|
|
Layer 6
|
370HR Dielectric
|
5.67
|
0.144
|
|
Bottom Copper Layer
|
Copper
|
35
|
N/A
|
Hybrid PCBConstruction Details
|
Construction Details
|
Specifications
|
|
Board Dimensions
|
93.57mm x 52mm = 1 PCS, +/- 0.15mm
|
|
Minimum Trace/Space
|
4/4 mils
|
|
Minimum Hole Size
|
0.3mm
|
|
Via in Pad and Under BGA
|
Filled and Capped
|
|
Finished Board Thickness
|
1.43mm
|
|
Finished Cu Weight
|
1 oz (1.4 mils) all layers
|
|
Via Plating Thickness
|
1 mil
|
|
Surface Finish
|
Immersion Gold
|
|
Top Silkscreen
|
White
|
|
Bottom Silkscreen
|
White
|
|
Top Solder Mask
|
Matt Red
|
|
Bottom Solder Mask
|
Matt Red
|
|
Impedance Control
|
50 ohm and 100 ohm single end impedance controlled of 5mil and 7mil on top layer
|
|
Electrical Testing
|
100% Electrical test used
|
PCB Statistics
|
PCB Statistics
|
Quantity
|
|
Components
|
26
|
|
Total Pads
|
77
|
|
Thru Hole Pads
|
45
|
|
Top SMT Pads
|
32
|
|
Bottom SMT Pads
|
0
|
|
Vias
|
33
|
|
Nets
|
8
|
Artwork and Standards
Type of Artwork Supplied: Gerber RS-274-X
Accepted Standard: IPC-Class-2
Service Area: Worldwide
Typical Applications
The hybrid circuit materials PCB finds its place in a myriad of applications, including
Automotive Radar and Sensors
Point-to-point Microwave
Power Amplifiers
Phased-Array Radar
RF Components
Conclusion:
In conclusion, the Hybrid PCB with 4mil RO4835 and 370HR laminates embodies cutting-edge technology and unparalleled reliability, making it the ideal choice for high-frequency applications where performance and durability are paramount.
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