← All parts of this equation

Equation 3 · Part 4 · Chiplets and Advanced Packaging in Practice: An Advanced Technical Guide

Symbol y_i

Ypackage≈∏i=1nyiY_{\text{package}} \approx \prod_{i=1}^{n} y_i
yiy_i

What this part means

the independent per-die yield.

Its job in the formula

yiy_i is an input to the expression that computes the quantity on the left.

Where the article explains it

If each of n chiplets bonded into one package has an independent per-die yield yiy_i , the assembly’s final yield is approximately Ypackage≈∏i=1nyiY_{\text{package}} \approx \prod_{i=1}^{n} y_i.

The passage around this formula

…composition, and it is worth writing down because it is the one piece of real math in advanced packaging that most design reviews skip past. If each of n chiplets bonded into one package has an independent per-die yield yiy_i , the assembly’s final yield is approximately Ypackage≈∏i=1nyiY_{\text{package}} \approx \prod_{i=1}^{n} y_i. which is a first-order model — it assumes bonding introduces no additional defects and that die yields are independent, both of which are simplifications addressed separately below. Even under this optimistic assumption, four…

Read this part in the article →

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.

Open the illustrated subscripts: which member of a family? guide →

See this notation across published equations →

Sources cited in the surrounding passage

These citations provide research context; check each source for the exact claim it supports.