Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
Yes, in the given 4-layer PCB stackup from OSHPARK, there are two middle copper layers. These are typically used for power planes (e.g., GND and VCC) or signal routing in multilayer designs. Here is a summary of the layer stack:
Top overlay or silkscreen: 1 mil thick
Top solder mask or solder resist: 1 mil thick
Top copper: 1.7 mil thick on 1 oz copper
Dielectric: 7.96 mil thick FR408HG 2113
Mid layer 1: 0.68 mil thick on 0.5 oz copper (First middle copper layer)
Dielectric core: 39 mil thick FR408HR
Mid layer 2: 0.68 mil thick on 0.5 oz copper (Second middle copper layer)
Dielectric: 7.96 mil thick FR408HG 2113
Bottom copper: 1.7 mil thick on 1 oz copper
Bottom solder mask or solder resist: 1 mil thick
Bottom overlay or silkscreen: 1 mil thick
So, you have:
Mid layer 1: First middle copper layer.
Mid layer 2: Second middle copper layer.
These layers are generally used to optimize signal integrity, minimize noise, and improve power distribution in the PCB.
In a printed circuit board (PCB), the top copper layer is the uppermost conductive layer where components are usually mounted on the top side of the board. This copper layer facilitates various electrical connections among components through traces or copper interconnections.
In your project, the top copper layer has the following specifications:
Thickness: 1.7 mils thick on 1 oz copper
The layers above the top copper layer in your project are:
Top solder mask or solder resist: 1 mil thick
Top overlay or silkscreen: 1 mil thick
The layers below the top copper layer are:
Dielectric: 7.96 mil thick FR408HG 2113
The top copper layer is crucial for efficient electrical signal transmission and component placement. It is etched to create the required circuit patterns and pads for soldering components.
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Passive Components
Resistor Power Rating
Beta
Checks that the power traveling across a given resistor is under its rating with 50% headroom.