Equation 3 · Part 1 · How Chiplets and Advanced Packaging Actually Work
Symbol r_o
What this part means
the outer radius of the oxide liner.
Its job in the formula
is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol r_o→Article meaning
Where the article explains it
with the via’s metal radius, the outer radius of the oxide liner, and the liner’s permittivity, while the bulk silicon beyond it contributes a finite shunt resistance rather than an open circuit.
The passage around this formula
with the via’s metal radius, the outer radius of the oxide liner, and the liner’s permittivity, while the bulk silicon beyond it contributes a finite shunt resistance rather than an open circuit. A TSV’s insertion loss is therefore not one number but a function of frequency, set by which of those…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
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Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.